---
_id: '64129'
abstract:
- lang: eng
text: Selecting scan angles such that surface segments are aligned with
straight X-ray paths (i.e., rays are tangential to the surface and therefore perpendicular
to the local surface normal) is known to produce sharper transitions of those
surface segments in the reconstructed volume. This enhances dimensional accuracy
in sparse-view computed tomography (CT). However, existing approaches offer no
direct means to exploit this criterion for automatic scan-angle optimization.
We propose a method that uses a virtual representation of the CT setup, including
an STL surface model of the inspected part, to automatically identify taskspecific
scan angles. Using elementary vector calculus, the algorithm determines projection
directions that generate tangential X-rays for targeted surface segments. To support
different levels of geometric complexity, we introduce two variants of the angle-selection
procedure. The methods were experimentally validated on two objects with distinct
absorption and geometric characteristics. For a steel gauge block, employing the
minimum number of task-specific projections required for surface-data completeness
substantially outperformed a conventional high-projection scan. For a geometrically
more complex test object, surface-related errors were still reduced within the
region of interest. The proposed approach – particularly suited for flat surface
structures and not accounting for image-degrading factors other than cone-beam
artifacts – shows promise for high-throughput dimensional metrology of mono-material
parts.
author:
- first_name: Lorenz
full_name: Butzhammer, Lorenz
last_name: Butzhammer
- first_name: Matthias Robert Oskar
full_name: Braun, Matthias Robert Oskar
last_name: Braun
- first_name: Colin
full_name: Herath, Colin
last_name: Herath
- first_name: Tino
full_name: Hausotte, Tino
last_name: Hausotte
citation:
ama: 'Butzhammer L, Braun MRO, Herath C, Hausotte T. Higher accuracy with fewer
projections? Automated scan angle selection for dimensional Computed Tomography
based on a simple data completeness measure for the part surface. In: E-Journal
of Nondestructive Testing. Vol 31. NDT.net GmbH & Co. KG; 2026. doi:10.58286/32560'
apa: Butzhammer, L., Braun, M. R. O., Herath, C., & Hausotte, T. (2026). Higher
accuracy with fewer projections? Automated scan angle selection for dimensional
Computed Tomography based on a simple data completeness measure for the part surface.
E-Journal of Nondestructive Testing, 31(3). https://doi.org/10.58286/32560
bibtex: '@inproceedings{Butzhammer_Braun_Herath_Hausotte_2026, title={Higher accuracy
with fewer projections? Automated scan angle selection for dimensional Computed
Tomography based on a simple data completeness measure for the part surface},
volume={31}, DOI={10.58286/32560},
number={3}, booktitle={e-Journal of Nondestructive Testing}, publisher={NDT.net
GmbH & Co. KG}, author={Butzhammer, Lorenz and Braun, Matthias Robert Oskar
and Herath, Colin and Hausotte, Tino}, year={2026} }'
chicago: Butzhammer, Lorenz, Matthias Robert Oskar Braun, Colin Herath, and Tino
Hausotte. “Higher Accuracy with Fewer Projections? Automated Scan Angle Selection
for Dimensional Computed Tomography Based on a Simple Data Completeness Measure
for the Part Surface.” In E-Journal of Nondestructive Testing, Vol. 31.
NDT.net GmbH & Co. KG, 2026. https://doi.org/10.58286/32560.
ieee: 'L. Butzhammer, M. R. O. Braun, C. Herath, and T. Hausotte, “Higher accuracy
with fewer projections? Automated scan angle selection for dimensional Computed
Tomography based on a simple data completeness measure for the part surface,”
in e-Journal of Nondestructive Testing, Linz, 2026, vol. 31, no. 3, doi:
10.58286/32560.'
mla: Butzhammer, Lorenz, et al. “Higher Accuracy with Fewer Projections? Automated
Scan Angle Selection for Dimensional Computed Tomography Based on a Simple Data
Completeness Measure for the Part Surface.” E-Journal of Nondestructive Testing,
vol. 31, no. 3, NDT.net GmbH & Co. KG, 2026, doi:10.58286/32560.
short: 'L. Butzhammer, M.R.O. Braun, C. Herath, T. Hausotte, in: E-Journal of Nondestructive
Testing, NDT.net GmbH & Co. KG, 2026.'
conference:
location: Linz
name: 15th Conference on Industrial Computed Tomography (iCT)
date_created: 2026-02-12T10:11:08Z
date_updated: 2026-02-12T10:41:45Z
department:
- _id: '630'
doi: 10.58286/32560
intvolume: ' 31'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.ndt.net/article/ctc2026/papers/ict26_Contribution_184.pdf
oa: '1'
project:
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '133'
name: TRR 285 - Project Area C
- _id: '149'
name: TRR 285 - Subproject C05
publication: e-Journal of Nondestructive Testing
publication_identifier:
issn:
- 1435-4934
publication_status: published
publisher: NDT.net GmbH & Co. KG
quality_controlled: '1'
status: public
title: Higher accuracy with fewer projections? Automated scan angle selection for
dimensional Computed Tomography based on a simple data completeness measure for
the part surface
type: conference
user_id: '93720'
volume: 31
year: '2026'
...
---
_id: '64678'
abstract:
- lang: eng
text: "One of the major topics in the modern automotive industry is reducing emissions
and increasing the mileage\r\nrange. To tackle this challenge, on the one hand,
modifying the powertrain system is a possibility, and on the\r\nother hand, lightweight
design offers various possibilities. Multi-Material Design (MMD) involves designing
car\r\nbodies that combine different materials that require joining. Given the
variety of materials, mechanical joining\r\nprocesses are preferred. Especially
the current development of the Giga/Mega-casting process concerning\r\naluminium
casting and the subsequent mechanical joining illustrates the challenges of this
material group. In car\r\nproduction, aluminium castings are mainly made from
aluminium-silicon (AlSi) alloys. Ultimately, the alloy\r\nsystem's insufficient
ductility leads to crack initiation during mechanical joining. Cast parts are
therefore often\r\nused in areas of the car body that are exposed to high-pressure
loads. For example, self-piercing riveting (SPR) is\r\nused due to its high load-bearing
capacity. In this study, improved joinability is demonstrated by influencing the\r\nmicrostructure
through tailored solidification rates and a developed heat-treatment chain strategy
adapted for\r\nhypoeutectic AlSi systems. Data on microstructure, mechanical,
and joining properties are used to develop a\r\nsolidification-joining correlation
for the SPR process across a range of Si contents and solidification rates. The\r\npurpose
is to develop the ability to produce suitable aluminium castings with sufficient
joinability, thereby\r\nimproving versatility."
article_type: original
author:
- first_name: Moritz
full_name: Neuser, Moritz
id: '32340'
last_name: Neuser
- first_name: Pia Katharina
full_name: Kaimann, Pia Katharina
id: '44935'
last_name: Kaimann
- first_name: Ina
full_name: Stratmann, Ina
last_name: Stratmann
- first_name: Mathias
full_name: Bobbert, Mathias
id: '7850'
last_name: Bobbert
- first_name: Johann Moritz Benedikt
full_name: Klöckner, Johann Moritz Benedikt
last_name: Klöckner
- first_name: Moritz
full_name: Mann, Moritz
last_name: Mann
- first_name: Kay-Peter
full_name: Hoyer, Kay-Peter
id: '48411'
last_name: Hoyer
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Mirko
full_name: Schaper, Mirko
id: '43720'
last_name: Schaper
citation:
ama: Neuser M, Kaimann PK, Stratmann I, et al. Solidification-joinability correlation
of hypoeutectic aluminium casting alloys for self-piercing riveting (SPR). Journal
of Manufacturing Processes. 2026;164. doi:https://doi.org/10.1016/j.jmapro.2026.02.040
apa: Neuser, M., Kaimann, P. K., Stratmann, I., Bobbert, M., Klöckner, J. M. B.,
Mann, M., Hoyer, K.-P., Meschut, G., & Schaper, M. (2026). Solidification-joinability
correlation of hypoeutectic aluminium casting alloys for self-piercing riveting
(SPR). Journal of Manufacturing Processes, 164. https://doi.org/10.1016/j.jmapro.2026.02.040
bibtex: '@article{Neuser_Kaimann_Stratmann_Bobbert_Klöckner_Mann_Hoyer_Meschut_Schaper_2026,
title={Solidification-joinability correlation of hypoeutectic aluminium casting
alloys for self-piercing riveting (SPR)}, volume={164}, DOI={https://doi.org/10.1016/j.jmapro.2026.02.040},
journal={Journal of Manufacturing Processes}, publisher={Elsevier}, author={Neuser,
Moritz and Kaimann, Pia Katharina and Stratmann, Ina and Bobbert, Mathias and
Klöckner, Johann Moritz Benedikt and Mann, Moritz and Hoyer, Kay-Peter and Meschut,
Gerson and Schaper, Mirko}, year={2026} }'
chicago: Neuser, Moritz, Pia Katharina Kaimann, Ina Stratmann, Mathias Bobbert,
Johann Moritz Benedikt Klöckner, Moritz Mann, Kay-Peter Hoyer, Gerson Meschut,
and Mirko Schaper. “Solidification-Joinability Correlation of Hypoeutectic Aluminium
Casting Alloys for Self-Piercing Riveting (SPR).” Journal of Manufacturing
Processes 164 (2026). https://doi.org/10.1016/j.jmapro.2026.02.040.
ieee: 'M. Neuser et al., “Solidification-joinability correlation of hypoeutectic
aluminium casting alloys for self-piercing riveting (SPR),” Journal of Manufacturing
Processes, vol. 164, 2026, doi: https://doi.org/10.1016/j.jmapro.2026.02.040.'
mla: Neuser, Moritz, et al. “Solidification-Joinability Correlation of Hypoeutectic
Aluminium Casting Alloys for Self-Piercing Riveting (SPR).” Journal of Manufacturing
Processes, vol. 164, Elsevier, 2026, doi:https://doi.org/10.1016/j.jmapro.2026.02.040.
short: M. Neuser, P.K. Kaimann, I. Stratmann, M. Bobbert, J.M.B. Klöckner, M. Mann,
K.-P. Hoyer, G. Meschut, M. Schaper, Journal of Manufacturing Processes 164 (2026).
date_created: 2026-02-26T11:21:24Z
date_updated: 2026-02-26T11:22:03Z
department:
- _id: '43'
- _id: '158'
- _id: '157'
- _id: '321'
doi: https://doi.org/10.1016/j.jmapro.2026.02.040
funded_apc: '1'
intvolume: ' 164'
keyword:
- Mechanical joining
- Aluminium
- Self-piercing riveting
- Casting
- Microstructure
- Joinability AlSi-alloys
language:
- iso: eng
project:
- _id: '131'
name: TRR 285 - Project Area A
- _id: '133'
name: TRR 285 - Project Area C
- _id: '136'
name: TRR 285 - Subproject A02
- _id: '146'
name: TRR 285 - Subproject C02
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: Journal of Manufacturing Processes
publication_status: published
publisher: Elsevier
quality_controlled: '1'
status: public
title: Solidification-joinability correlation of hypoeutectic aluminium casting alloys
for self-piercing riveting (SPR)
type: journal_article
user_id: '32340'
volume: 164
year: '2026'
...
---
_id: '65153'
article_type: original
author:
- first_name: Lorenz
full_name: Butzhammer, Lorenz
last_name: Butzhammer
citation:
ama: Butzhammer L. Conversion between detector- and rotary-table-related misalignment
parameterisations for unified projection-matrix-based geometry calibration in
dimensional X-ray computed tomography. Precision Engineering. 2026;100:377-400.
doi:10.1016/j.precisioneng.2026.03.015
apa: Butzhammer, L. (2026). Conversion between detector- and rotary-table-related
misalignment parameterisations for unified projection-matrix-based geometry calibration
in dimensional X-ray computed tomography. Precision Engineering, 100,
377–400. https://doi.org/10.1016/j.precisioneng.2026.03.015
bibtex: '@article{Butzhammer_2026, title={Conversion between detector- and rotary-table-related
misalignment parameterisations for unified projection-matrix-based geometry calibration
in dimensional X-ray computed tomography}, volume={100}, DOI={10.1016/j.precisioneng.2026.03.015},
journal={Precision Engineering}, publisher={Elsevier BV}, author={Butzhammer,
Lorenz}, year={2026}, pages={377–400} }'
chicago: 'Butzhammer, Lorenz. “Conversion between Detector- and Rotary-Table-Related
Misalignment Parameterisations for Unified Projection-Matrix-Based Geometry Calibration
in Dimensional X-Ray Computed Tomography.” Precision Engineering 100 (2026):
377–400. https://doi.org/10.1016/j.precisioneng.2026.03.015.'
ieee: 'L. Butzhammer, “Conversion between detector- and rotary-table-related misalignment
parameterisations for unified projection-matrix-based geometry calibration in
dimensional X-ray computed tomography,” Precision Engineering, vol. 100,
pp. 377–400, 2026, doi: 10.1016/j.precisioneng.2026.03.015.'
mla: Butzhammer, Lorenz. “Conversion between Detector- and Rotary-Table-Related
Misalignment Parameterisations for Unified Projection-Matrix-Based Geometry Calibration
in Dimensional X-Ray Computed Tomography.” Precision Engineering, vol.
100, Elsevier BV, 2026, pp. 377–400, doi:10.1016/j.precisioneng.2026.03.015.
short: L. Butzhammer, Precision Engineering 100 (2026) 377–400.
date_created: 2026-03-26T15:25:23Z
date_updated: 2026-03-26T15:30:19Z
department:
- _id: '630'
doi: 10.1016/j.precisioneng.2026.03.015
intvolume: ' 100'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sciencedirect.com/science/article/pii/S0141635926000851/pdfft?md5=5f0cd152522e4ff286a245f033269774&pid=1-s2.0-S0141635926000851-main.pdf
oa: '1'
page: 377-400
project:
- _id: '133'
name: TRR 285 - Project Area C
- _id: '149'
name: TRR 285 - Subproject C05
publication: Precision Engineering
publication_identifier:
issn:
- 0141-6359
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: Conversion between detector- and rotary-table-related misalignment parameterisations
for unified projection-matrix-based geometry calibration in dimensional X-ray computed
tomography
type: journal_article
user_id: '93720'
volume: 100
year: '2026'
...
---
_id: '58495'
abstract:
- lang: eng
text: To reduce CO2 emissions, the industry, particularly
in the mobility sector, focuses on lightweight vehicles with multi-material structures.
As thermal joining processes are reaching their limits, mechanical techniques
such as self-piercing riveting are being used. One innovative solution is the
versatile self-piercing riveting process (V-SPR), which combines different material
combinations with a multi-range rivet. 1 The joining process
is divided into the piercing process and the forming process of the rivet head
to the respective sheet thickness. The rivet shaft requires sufficient strength
to punch through the punch-sided sheet, and sufficient ductility of the rivet
head is required to form onto the punch-sided sheet. To achieve a combination
of these requirements, local inductive heat treatment strategies are used for
the rivet. To ensure reproducible rivet hardening, a specialised device has been
developed for precise rivet positioning in the induction coil and the subsequent
quenching process. The heat treatment differs in terms of hardening times and
temperatures. In addition, the heat treatment is combined with a subsequent tempering
process. The study aims to determine the resulting hardness distributions and
microstructures of the rivet and to investigate the influence of different heat
treatment strategies on joint formation and load-bearing capacities. The results
show that a graded hardening profile has a positive effect on the spreading behaviour
of the rivet foot and the forming behaviour of the rivet head. Furthermore, the
load-bearing behaviour of the joints is increased.
author:
- first_name: Pia Katharina
full_name: Holtkamp, Pia Katharina
id: '44935'
last_name: Holtkamp
- first_name: Fabian
full_name: Kappe, Fabian
id: '66459'
last_name: Kappe
- first_name: Paula
full_name: Probst, Paula
last_name: Probst
- first_name: Mathias
full_name: Bobbert, Mathias
id: '7850'
last_name: Bobbert
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: 'Holtkamp PK, Kappe F, Probst P, Bobbert M, Meschut G. Investigation of local
heat treatment strategies for a multi-range capable rivet and the influence on
joint formation and load-bearing capacity. Proceedings of the Institution of
Mechanical Engineers, Part L: Journal of Materials: Design and Applications.
Published online 2025. doi:10.1177/14644207241307508'
apa: 'Holtkamp, P. K., Kappe, F., Probst, P., Bobbert, M., & Meschut, G. (2025).
Investigation of local heat treatment strategies for a multi-range capable rivet
and the influence on joint formation and load-bearing capacity. Proceedings
of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design
and Applications. https://doi.org/10.1177/14644207241307508'
bibtex: '@article{Holtkamp_Kappe_Probst_Bobbert_Meschut_2025, title={Investigation
of local heat treatment strategies for a multi-range capable rivet and the influence
on joint formation and load-bearing capacity}, DOI={10.1177/14644207241307508},
journal={Proceedings of the Institution of Mechanical Engineers, Part L: Journal
of Materials: Design and Applications}, publisher={SAGE Publications}, author={Holtkamp,
Pia Katharina and Kappe, Fabian and Probst, Paula and Bobbert, Mathias and Meschut,
Gerson}, year={2025} }'
chicago: 'Holtkamp, Pia Katharina, Fabian Kappe, Paula Probst, Mathias Bobbert,
and Gerson Meschut. “Investigation of Local Heat Treatment Strategies for a Multi-Range
Capable Rivet and the Influence on Joint Formation and Load-Bearing Capacity.”
Proceedings of the Institution of Mechanical Engineers, Part L: Journal of
Materials: Design and Applications, 2025. https://doi.org/10.1177/14644207241307508.'
ieee: 'P. K. Holtkamp, F. Kappe, P. Probst, M. Bobbert, and G. Meschut, “Investigation
of local heat treatment strategies for a multi-range capable rivet and the influence
on joint formation and load-bearing capacity,” Proceedings of the Institution
of Mechanical Engineers, Part L: Journal of Materials: Design and Applications,
2025, doi: 10.1177/14644207241307508.'
mla: 'Holtkamp, Pia Katharina, et al. “Investigation of Local Heat Treatment Strategies
for a Multi-Range Capable Rivet and the Influence on Joint Formation and Load-Bearing
Capacity.” Proceedings of the Institution of Mechanical Engineers, Part L:
Journal of Materials: Design and Applications, SAGE Publications, 2025, doi:10.1177/14644207241307508.'
short: 'P.K. Holtkamp, F. Kappe, P. Probst, M. Bobbert, G. Meschut, Proceedings
of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design
and Applications (2025).'
date_created: 2025-02-03T09:26:32Z
date_updated: 2025-02-03T09:36:32Z
department:
- _id: '43'
- _id: '157'
doi: 10.1177/14644207241307508
language:
- iso: eng
project:
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: 'Proceedings of the Institution of Mechanical Engineers, Part L: Journal
of Materials: Design and Applications'
publication_identifier:
issn:
- 1464-4207
- 2041-3076
publication_status: published
publisher: SAGE Publications
quality_controlled: '1'
status: public
title: Investigation of local heat treatment strategies for a multi-range capable
rivet and the influence on joint formation and load-bearing capacity
type: journal_article
user_id: '44935'
year: '2025'
...
---
_id: '59483'
abstract:
- lang: eng
text: Abstract. The assessment of mechanically joined connections, such
as clinched connections, is usually conducted destructively. Applicable non-destructive
testing methods like computed tomography are time-consuming and costly, or, like
electrical resistance measurement, provide only a limited amount of information.
A fast, non-destructive evaluation of the joints condition shall be made possible
by using transient dynamic analysis (TDA). It is based on the introduction of
sound waves and the evaluation of the response behavior after passing through
the structure. This study focuses the application of TDA to clinched shear connections
to evaluate the performance of the tactile measuring setup. Twenty-one series
were investigated, covering variations in joining task, manufacturing and defect.
The evaluation was carried out using machine learning to determine for which series
characteristic signals may be detected. It was shown that a classification of
the investigated specimens is possible, whereby the classification accuracy depends
on the examined variation. Furthermore, the accuracy was evaluated as a function
of frequency and results were concluded to identify the limits of the used measuring
setup.
author:
- first_name: Gregor
full_name: Reschke, Gregor
last_name: Reschke
- first_name: Alexander
full_name: Brosius, Alexander
last_name: Brosius
citation:
ama: 'Reschke G, Brosius A. Transient dynamic analysis: Performance evaluation of
tactile measurement. In: Materials Research Proceedings. Vol 52. Materials
Research Forum LLC; 2025:293-300. doi:10.21741/9781644903551-36'
apa: 'Reschke, G., & Brosius, A. (2025). Transient dynamic analysis: Performance
evaluation of tactile measurement. Materials Research Proceedings, 52,
293–300. https://doi.org/10.21741/9781644903551-36'
bibtex: '@inproceedings{Reschke_Brosius_2025, title={Transient dynamic analysis:
Performance evaluation of tactile measurement}, volume={52}, DOI={10.21741/9781644903551-36},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Reschke, Gregor and Brosius, Alexander}, year={2025}, pages={293–300}
}'
chicago: 'Reschke, Gregor, and Alexander Brosius. “Transient Dynamic Analysis: Performance
Evaluation of Tactile Measurement.” In Materials Research Proceedings,
52:293–300. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903551-36.'
ieee: 'G. Reschke and A. Brosius, “Transient dynamic analysis: Performance evaluation
of tactile measurement,” in Materials Research Proceedings, Paderborn,
2025, vol. 52, pp. 293–300, doi: 10.21741/9781644903551-36.'
mla: 'Reschke, Gregor, and Alexander Brosius. “Transient Dynamic Analysis: Performance
Evaluation of Tactile Measurement.” Materials Research Proceedings, vol.
52, Materials Research Forum LLC, 2025, pp. 293–300, doi:10.21741/9781644903551-36.'
short: 'G. Reschke, A. Brosius, in: Materials Research Proceedings, Materials Research
Forum LLC, 2025, pp. 293–300.'
conference:
end_date: 2025-04-03
location: Paderborn
name: 21st SheMet Conference
start_date: 2025-04-01
date_created: 2025-04-10T11:27:20Z
date_updated: 2025-04-10T11:33:28Z
department:
- _id: '43'
- _id: '157'
doi: 10.21741/9781644903551-36
intvolume: ' 52'
keyword:
- Joining
- Machine Learning
- Transient Dynamic Analysis
language:
- iso: eng
page: 293-300
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
status: public
title: 'Transient dynamic analysis: Performance evaluation of tactile measurement'
type: conference
user_id: '98812'
volume: 52
year: '2025'
...
---
_id: '60108'
abstract:
- lang: eng
text: Abstract. In the field of mechanical engineering, destructive tests
such as shear tests of mechanical joints are usually followed by imaging methods
such as microsectioning or computed tomography (CT). They can help to interpret
the measured load-displacement curves, analyze the failure behavior and validate
numerical models. However, due to unloading, springback effects and crack closures
can occur, which influence the state of the investigated specimen. In this context,
in situ CT is able to explore the testing process with a specimen under load avoiding
these influences. For in situ CT investigations, the displacement increase is
interrupted at certain stop points. While the displacement is kept constant, the
CT scan is performed. However, it was observed that the reaction force reduces
during CT scanning, e. g. due to settling effects in the test setup. Although
in situ CT is established now in research, little attention is paid to the uncertainties
which arise from the discontinuous testing procedure. This study systematically
explores the impact of these interruptions on the load-displacement behavior and
the geometry of clinch points during tensile shear testing. To quantify the influence
of the interruptions, loads at defined displacement levels and the final geometry
are evaluated statistically. We found, that the load-displacement behavior of
both test groups is similar. Despite some small but significant statistical deviations
of the loads and the final geometry, our results show that, discontinuous testing
has a high level of significance for the phenomena overserved in shear tests with
clinch points.
author:
- first_name: D.
full_name: Köhler, D.
last_name: Köhler
- first_name: J
full_name: Troschitz, J
last_name: Troschitz
- first_name: R.
full_name: Kupfer, R.
last_name: Kupfer
- first_name: M.
full_name: Gude, M.
last_name: Gude
citation:
ama: 'Köhler D, Troschitz J, Kupfer R, Gude M. In situ computed tomography – Analysis
of settling effects during single-lap shear tests with clinch points. In: Materials
Research Proceedings. Vol 52. Materials Research Forum LLC; 2025. doi:10.21741/9781644903551-15'
apa: Köhler, D., Troschitz, J., Kupfer, R., & Gude, M. (2025). In situ computed
tomography – Analysis of settling effects during single-lap shear tests with clinch
points. Materials Research Proceedings, 52. https://doi.org/10.21741/9781644903551-15
bibtex: '@inproceedings{Köhler_Troschitz_Kupfer_Gude_2025, title={In situ computed
tomography – Analysis of settling effects during single-lap shear tests with clinch
points}, volume={52}, DOI={10.21741/9781644903551-15},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Köhler, D. and Troschitz, J and Kupfer, R. and Gude, M.}, year={2025}
}'
chicago: Köhler, D., J Troschitz, R. Kupfer, and M. Gude. “In Situ Computed Tomography
– Analysis of Settling Effects during Single-Lap Shear Tests with Clinch Points.”
In Materials Research Proceedings, Vol. 52. Materials Research Forum LLC,
2025. https://doi.org/10.21741/9781644903551-15.
ieee: 'D. Köhler, J. Troschitz, R. Kupfer, and M. Gude, “In situ computed tomography
– Analysis of settling effects during single-lap shear tests with clinch points,”
in Materials Research Proceedings, 2025, vol. 52, doi: 10.21741/9781644903551-15.'
mla: Köhler, D., et al. “In Situ Computed Tomography – Analysis of Settling Effects
during Single-Lap Shear Tests with Clinch Points.” Materials Research Proceedings,
vol. 52, Materials Research Forum LLC, 2025, doi:10.21741/9781644903551-15.
short: 'D. Köhler, J. Troschitz, R. Kupfer, M. Gude, in: Materials Research Proceedings,
Materials Research Forum LLC, 2025.'
date_created: 2025-06-02T20:05:01Z
date_updated: 2025-06-02T20:18:20Z
department:
- _id: '157'
- _id: '43'
doi: 10.21741/9781644903551-15
intvolume: ' 52'
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
status: public
title: In situ computed tomography – Analysis of settling effects during single-lap
shear tests with clinch points
type: conference
user_id: '83408'
volume: 52
year: '2025'
...
---
_id: '61825'
abstract:
- lang: eng
text: "Abstract\r\n Industrial x-ray
computed tomography (CT) systems with high geometric flexibility are increasingly
utilized for large-scale measurement objects or challenging measurement tasks.
To maintain high accuracy when deviating from the established circular scan trajectory,
trajectory calibration methods using multi-sphere reference objects with known
marker positions are commonly employed. These multi-sphere objects can either
be scanned together with the measurement object (online trajectory calibration)
or in a separate scan (offline trajectory calibration). While offline calibration
increases machine time, it generally results in higher scan quality. However,
a sufficient pose repeatability is necessary to ensure comparable or even superior
accuracy to online calibration. In this contribution, we present a straightforward
procedure to compare both types of trajectory calibration in a way that the differences
of the results can directly be traced back to the influence of the pose repeatability.
The multi-sphere reference object is not only used for trajectory calibration,
but simultaneously as a measurement object for repeated measurements. The methodology
is tested on both a twin robotic CT system and a conventional CT system that is
additionally equipped with a hexapod manipulator for adaptive object tilting.
Results showed, independent from the type of trajectory calibration, systematic
measurement errors in the order of 10−5–10−4
of measured sphere distances and sphericity values below 50 \r\n
\ \r\n \r\n \r\n \r\n
\ μ\r\n \r\n
\ \r\n m\r\n \r\n
\ \r\n \r\n .
For sphere distances, random errors were increased by a factor of 5 due to the
offline trajectory calibration, but were still low (\r\n
\ \r\n \r\n \r\n \r\n
\ <\r\n \r\n
\ \r\n 1\r\n
\ \r\n \r\n \r\n μ\r\n
\ \r\n \r\n
\ m\r\n \r\n
\ \r\n \r\n )
in comparison to systematic errors and the spread of different measurement features.
Overall, both investigated systems demonstrated sufficient positioning repeatability
for offline trajectory calibration. The method is in general also applicable to
any other types of manipulator systems used for CT devices. It provides a workflow
for the decision which type of trajectory calibration is preferable for a given
CT system."
article_number: '025401'
author:
- first_name: Lorenz
full_name: Butzhammer, Lorenz
last_name: Butzhammer
- first_name: Niklas
full_name: Handke, Niklas
last_name: Handke
- first_name: Simon
full_name: Wittl, Simon
last_name: Wittl
- first_name: Gabriel
full_name: Herl, Gabriel
last_name: Herl
- first_name: Tino
full_name: Hausotte, Tino
last_name: Hausotte
citation:
ama: Butzhammer L, Handke N, Wittl S, Herl G, Hausotte T. Direct assessment of the
influence of pose repeatability on the accuracy of dimensional measurements for
computed tomography systems with high degrees of freedom. Measurement Science
and Technology. 2025;36(2). doi:10.1088/1361-6501/ada05a
apa: Butzhammer, L., Handke, N., Wittl, S., Herl, G., & Hausotte, T. (2025).
Direct assessment of the influence of pose repeatability on the accuracy of dimensional
measurements for computed tomography systems with high degrees of freedom. Measurement
Science and Technology, 36(2), Article 025401. https://doi.org/10.1088/1361-6501/ada05a
bibtex: '@article{Butzhammer_Handke_Wittl_Herl_Hausotte_2025, title={Direct assessment
of the influence of pose repeatability on the accuracy of dimensional measurements
for computed tomography systems with high degrees of freedom}, volume={36}, DOI={10.1088/1361-6501/ada05a},
number={2025401}, journal={Measurement Science and Technology}, publisher={IOP
Publishing}, author={Butzhammer, Lorenz and Handke, Niklas and Wittl, Simon and
Herl, Gabriel and Hausotte, Tino}, year={2025} }'
chicago: Butzhammer, Lorenz, Niklas Handke, Simon Wittl, Gabriel Herl, and Tino
Hausotte. “Direct Assessment of the Influence of Pose Repeatability on the Accuracy
of Dimensional Measurements for Computed Tomography Systems with High Degrees
of Freedom.” Measurement Science and Technology 36, no. 2 (2025). https://doi.org/10.1088/1361-6501/ada05a.
ieee: 'L. Butzhammer, N. Handke, S. Wittl, G. Herl, and T. Hausotte, “Direct assessment
of the influence of pose repeatability on the accuracy of dimensional measurements
for computed tomography systems with high degrees of freedom,” Measurement
Science and Technology, vol. 36, no. 2, Art. no. 025401, 2025, doi: 10.1088/1361-6501/ada05a.'
mla: Butzhammer, Lorenz, et al. “Direct Assessment of the Influence of Pose Repeatability
on the Accuracy of Dimensional Measurements for Computed Tomography Systems with
High Degrees of Freedom.” Measurement Science and Technology, vol. 36,
no. 2, 025401, IOP Publishing, 2025, doi:10.1088/1361-6501/ada05a.
short: L. Butzhammer, N. Handke, S. Wittl, G. Herl, T. Hausotte, Measurement Science
and Technology 36 (2025).
date_created: 2025-10-14T13:50:32Z
date_updated: 2026-02-12T10:45:36Z
department:
- _id: '630'
doi: 10.1088/1361-6501/ada05a
intvolume: ' 36'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://iopscience.iop.org/article/10.1088/1361-6501/ada05a/pdf
oa: '1'
project:
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '133'
name: TRR 285 - Project Area C
- _id: '149'
name: TRR 285 - Subproject C05
publication: Measurement Science and Technology
publication_identifier:
issn:
- 0957-0233
- 1361-6501
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
status: public
title: Direct assessment of the influence of pose repeatability on the accuracy of
dimensional measurements for computed tomography systems with high degrees of freedom
type: journal_article
user_id: '93720'
volume: 36
year: '2025'
...
---
_id: '60440'
abstract:
- lang: eng
text: The versatile self-pierce riveting (V-SPR) is a further development of semi-tubular
self-pierce riveting. V-SPR enables adaptation to changing boundary conditions,
such as a change in the material thickness combination, without varying the rivet
die combination due to increased punch actuation and the use of multi-range capable
rivets [1]. The inner punch first sets the rivet. The outer punch then forms the
rivet head to the respective sheet thickness. For this, the rivet requires a hard
shank and a ductile rivet head, which is achieved by an inductive local hardening
process [2]. Until now, the joint formation of rivets with graded hardness profile
has been challenging to estimate in the FEM simulation due to the inhomogeneous
material conditions in the rivet. In this study, a method capable of reproducing
the experimentally determined hardness levels of rivets in detail is shown. This
FE model enables the realistic modelling of the mechanical properties of the rivet
on the basis of the hardness profile in order to predict the correct deformation
processes and stresses during the riveting process. First, the detailed experimental
hardness mapping of the locally heat-treated rivets is transferred into the FE
model. The FEM material model can predict the local strength of the rivet based
on hardness by scaling the flow curves. To estimate the predictive capability
of the FEM model, the joint formation of rivets with different graded hardness
profiles is compared experimentally and simulative. Based on the validated model,
the influence of different rivet hardness profiles on the joint formation is analysed
numerically. By adapting the material model, a high level of correlation between
the experiment's joint formation and the simulation can be achieved.
author:
- first_name: Pia Katharina
full_name: Holtkamp, Pia Katharina
id: '44935'
last_name: Holtkamp
- first_name: Christian Roman
full_name: Bielak, Christian Roman
id: '34782'
last_name: Bielak
- first_name: Mathias
full_name: Bobbert, Mathias
id: '7850'
last_name: Bobbert
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: 'Holtkamp PK, Bielak CR, Bobbert M, Meschut G. Simulation of the joining process
of graded hardened multi-range capable rivets. In: Materials Research Proceedings.
Vol 54. Materials Research Forum LLC; 2025. doi:10.21741/9781644903599-153'
apa: Holtkamp, P. K., Bielak, C. R., Bobbert, M., & Meschut, G. (2025). Simulation
of the joining process of graded hardened multi-range capable rivets. Materials
Research Proceedings, 54. https://doi.org/10.21741/9781644903599-153
bibtex: '@inproceedings{Holtkamp_Bielak_Bobbert_Meschut_2025, title={Simulation
of the joining process of graded hardened multi-range capable rivets}, volume={54},
DOI={10.21741/9781644903599-153},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Holtkamp, Pia Katharina and Bielak, Christian Roman and Bobbert,
Mathias and Meschut, Gerson}, year={2025} }'
chicago: Holtkamp, Pia Katharina, Christian Roman Bielak, Mathias Bobbert, and Gerson
Meschut. “Simulation of the Joining Process of Graded Hardened Multi-Range Capable
Rivets.” In Materials Research Proceedings, Vol. 54. Materials Research
Forum LLC, 2025. https://doi.org/10.21741/9781644903599-153.
ieee: 'P. K. Holtkamp, C. R. Bielak, M. Bobbert, and G. Meschut, “Simulation of
the joining process of graded hardened multi-range capable rivets,” in Materials
Research Proceedings, 2025, vol. 54, doi: 10.21741/9781644903599-153.'
mla: Holtkamp, Pia Katharina, et al. “Simulation of the Joining Process of Graded
Hardened Multi-Range Capable Rivets.” Materials Research Proceedings, vol.
54, Materials Research Forum LLC, 2025, doi:10.21741/9781644903599-153.
short: 'P.K. Holtkamp, C.R. Bielak, M. Bobbert, G. Meschut, in: Materials Research
Proceedings, Materials Research Forum LLC, 2025.'
date_created: 2025-06-27T08:23:00Z
date_updated: 2026-02-24T14:12:10Z
department:
- _id: '43'
- _id: '157'
doi: 10.21741/9781644903599-153
intvolume: ' 54'
language:
- iso: eng
project:
- _id: '130'
name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '146'
name: 'TRR 285 – C02: TRR 285 - Subproject C02'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '135'
name: 'TRR 285 – A01: TRR 285 - Subproject A01'
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
status: public
title: Simulation of the joining process of graded hardened multi-range capable rivets
type: conference
user_id: '7850'
volume: 54
year: '2025'
...
---
_id: '61767'
abstract:
- lang: eng
text: "Abstract\r\n A clinch point’s quality
is usually assessed using ex situ destructive testing methods. These, however,
are unable to detect phenomena immediately during the joining process. For instance,
elastic deformations reverse and cracks close after unloading. In situ methods
such as the force-displacement evaluation are used to investigate a clinching
process, though deviations in the clinch point geometry cannot be derived with
this method. To overcome these limitations, the clinching process can be investigated
using in situ computed tomography (in situ CT). When investigating the clinching
of aluminum parts in in situ CT, the sheet-sheet interface is hardly visible.
Earlier investigations showed that radiopaque materials can be applied between
the joining parts to enhance the detectability of the sheet-sheet interface. However,
the layers cause strong artefacts, break during the clinching process or change
the clinch joint’s properties significantly. In this paper, a minimally invasive
method to enhance the interface detectability is presented. First, the aluminum
oxide layer is removed by etching. Second, the specimen is electroplated with
copper or gold, respectively. In some cases, a mask is applied to create a cross-shaped
plating pattern. Then, the plated specimen is clinched with a non-plated counterpart
and the interface detectability of the clinch points is assessed in CT scans.
It is shown that a copper plating of 2.6–4 μm can visualize some parts of the
interface, while 7–9 μm is suitable to enhance the detectability of the sheet-sheet
interface almost continuously."
article_number: '131'
article_type: original
author:
- first_name: Daniel
full_name: Köhler, Daniel
id: '83408'
last_name: Köhler
- first_name: Alrik
full_name: Dargel, Alrik
id: '114764'
last_name: Dargel
- first_name: Juliane
full_name: Troschitz, Juliane
last_name: Troschitz
- first_name: Maik
full_name: Gude, Maik
last_name: Gude
- first_name: Robert
full_name: Kupfer, Robert
last_name: Kupfer
citation:
ama: Köhler D, Dargel A, Troschitz J, Gude M, Kupfer R. In Situ CT of Clinch Points
– Enhancing Interface Detectability Using Electroplated Patterns of Radiopaque
Materials. Journal of Nondestructive Evaluation. 2025;44(4). doi:10.1007/s10921-025-01270-1
apa: Köhler, D., Dargel, A., Troschitz, J., Gude, M., & Kupfer, R. (2025). In
Situ CT of Clinch Points – Enhancing Interface Detectability Using Electroplated
Patterns of Radiopaque Materials. Journal of Nondestructive Evaluation,
44(4), Article 131. https://doi.org/10.1007/s10921-025-01270-1
bibtex: '@article{Köhler_Dargel_Troschitz_Gude_Kupfer_2025, title={In Situ CT of
Clinch Points – Enhancing Interface Detectability Using Electroplated Patterns
of Radiopaque Materials}, volume={44}, DOI={10.1007/s10921-025-01270-1},
number={4131}, journal={Journal of Nondestructive Evaluation}, publisher={Springer
Science and Business Media LLC}, author={Köhler, Daniel and Dargel, Alrik and
Troschitz, Juliane and Gude, Maik and Kupfer, Robert}, year={2025} }'
chicago: Köhler, Daniel, Alrik Dargel, Juliane Troschitz, Maik Gude, and Robert
Kupfer. “In Situ CT of Clinch Points – Enhancing Interface Detectability Using
Electroplated Patterns of Radiopaque Materials.” Journal of Nondestructive
Evaluation 44, no. 4 (2025). https://doi.org/10.1007/s10921-025-01270-1.
ieee: 'D. Köhler, A. Dargel, J. Troschitz, M. Gude, and R. Kupfer, “In Situ CT of
Clinch Points – Enhancing Interface Detectability Using Electroplated Patterns
of Radiopaque Materials,” Journal of Nondestructive Evaluation, vol. 44,
no. 4, Art. no. 131, 2025, doi: 10.1007/s10921-025-01270-1.'
mla: Köhler, Daniel, et al. “In Situ CT of Clinch Points – Enhancing Interface Detectability
Using Electroplated Patterns of Radiopaque Materials.” Journal of Nondestructive
Evaluation, vol. 44, no. 4, 131, Springer Science and Business Media LLC,
2025, doi:10.1007/s10921-025-01270-1.
short: D. Köhler, A. Dargel, J. Troschitz, M. Gude, R. Kupfer, Journal of Nondestructive
Evaluation 44 (2025).
date_created: 2025-10-09T08:27:41Z
date_updated: 2026-02-24T15:13:52Z
doi: 10.1007/s10921-025-01270-1
intvolume: ' 44'
issue: '4'
language:
- iso: eng
project:
- _id: '133'
name: TRR 285 - Project Area C
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '148'
name: TRR 285 - Subproject C04
publication: Journal of Nondestructive Evaluation
publication_identifier:
issn:
- 0195-9298
- 1573-4862
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: In Situ CT of Clinch Points – Enhancing Interface Detectability Using Electroplated
Patterns of Radiopaque Materials
type: journal_article
user_id: '114764'
volume: 44
year: '2025'
...
---
_id: '61149'
abstract:
- lang: eng
text: The use of continuous fiber-reinforced thermoplastics (FRTP) in automotive
industry increases due to their excellent material properties and possibility
of rapid processing. The scale spanning heterogeneity of their material structure
and its influence on the material behavior, however, presents significant challenges
for most joining technologies, such as self-piercing riveting (SPR). During mechanical
joining, the material structure is significantly altered within and around the
joining zone, heavily influencing the material behavior. A comprehensive understanding
of the underlying phenomena of material alteration during the SPR process is essential
as basis for validating numerical simulations. This study examines the material
structure at ten stages of a step-setting test of SPR with two FRTP sheets with
glass-fiber reinforcement. Utilizing X-ray computed tomography (CT), the damage
phenomena within different areas of the setting test are analyzed three-dimensionally
and key parameters are quantified. Dominating phenomena during the penetration
of the rivet into the laminate are fiber failure (FF), interfiber failure (IFF)
and fiber bending, while delamination, fiber kinking and roving splitting are
also observed. At the final stages, the bottom layers of the second sheet collapse
and form a bulge into the cavity of the die.
author:
- first_name: Alrik
full_name: Dargel, Alrik
id: '114764'
last_name: Dargel
- first_name: Benjamin
full_name: Gröger, Benjamin
last_name: Gröger
- first_name: Malte Christian
full_name: Schlichter, Malte Christian
id: '61977'
last_name: Schlichter
- first_name: Johannes
full_name: Gerritzen, Johannes
id: '105344'
last_name: Gerritzen
orcid: 0000-0002-0169-8602
- first_name: Daniel
full_name: Köhler, Daniel
id: '83408'
last_name: Köhler
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Maik
full_name: Gude, Maik
last_name: Gude
- first_name: Robert
full_name: Kupfer, Robert
last_name: Kupfer
citation:
ama: 'Dargel A, Gröger B, Schlichter MC, et al. LOCAL DEFORMATION AND FAILURE OF
COMPOSITES DURING SELF-PIERCING RIVETING: A CT BASED MICROSTRUCTURE INVESTIGATION.
In: Gomes JFS, Meguid SA, eds. Proceedings of the 8th International Conference
on Integrity-Reliability-Failure (IRF2025). FEUP; 2025. doi:10.24840/978-972-752-323-8'
apa: 'Dargel, A., Gröger, B., Schlichter, M. C., Gerritzen, J., Köhler, D., Meschut,
G., Gude, M., & Kupfer, R. (2025). LOCAL DEFORMATION AND FAILURE OF COMPOSITES
DURING SELF-PIERCING RIVETING: A CT BASED MICROSTRUCTURE INVESTIGATION. In J.
F. S. Gomes & S. A. Meguid (Eds.), Proceedings of the 8th International
Conference on Integrity-Reliability-Failure (IRF2025). FEUP. https://doi.org/10.24840/978-972-752-323-8'
bibtex: '@inproceedings{Dargel_Gröger_Schlichter_Gerritzen_Köhler_Meschut_Gude_Kupfer_2025,
place={Porto}, title={LOCAL DEFORMATION AND FAILURE OF COMPOSITES DURING SELF-PIERCING
RIVETING: A CT BASED MICROSTRUCTURE INVESTIGATION}, DOI={10.24840/978-972-752-323-8},
booktitle={Proceedings of the 8th International Conference on Integrity-Reliability-Failure
(IRF2025)}, publisher={FEUP}, author={Dargel, Alrik and Gröger, Benjamin and Schlichter,
Malte Christian and Gerritzen, Johannes and Köhler, Daniel and Meschut, Gerson
and Gude, Maik and Kupfer, Robert}, editor={Gomes, J.F. Silva and Meguid, Shaker
A.}, year={2025} }'
chicago: 'Dargel, Alrik, Benjamin Gröger, Malte Christian Schlichter, Johannes Gerritzen,
Daniel Köhler, Gerson Meschut, Maik Gude, and Robert Kupfer. “LOCAL DEFORMATION
AND FAILURE OF COMPOSITES DURING SELF-PIERCING RIVETING: A CT BASED MICROSTRUCTURE
INVESTIGATION.” In Proceedings of the 8th International Conference on Integrity-Reliability-Failure
(IRF2025), edited by J.F. Silva Gomes and Shaker A. Meguid. Porto: FEUP, 2025.
https://doi.org/10.24840/978-972-752-323-8.'
ieee: 'A. Dargel et al., “LOCAL DEFORMATION AND FAILURE OF COMPOSITES DURING
SELF-PIERCING RIVETING: A CT BASED MICROSTRUCTURE INVESTIGATION,” in Proceedings
of the 8th International Conference on Integrity-Reliability-Failure (IRF2025),
Porto, 2025, doi: 10.24840/978-972-752-323-8.'
mla: 'Dargel, Alrik, et al. “LOCAL DEFORMATION AND FAILURE OF COMPOSITES DURING
SELF-PIERCING RIVETING: A CT BASED MICROSTRUCTURE INVESTIGATION.” Proceedings
of the 8th International Conference on Integrity-Reliability-Failure (IRF2025),
edited by J.F. Silva Gomes and Shaker A. Meguid, FEUP, 2025, doi:10.24840/978-972-752-323-8.'
short: 'A. Dargel, B. Gröger, M.C. Schlichter, J. Gerritzen, D. Köhler, G. Meschut,
M. Gude, R. Kupfer, in: J.F.S. Gomes, S.A. Meguid (Eds.), Proceedings of the 8th
International Conference on Integrity-Reliability-Failure (IRF2025), FEUP, Porto,
2025.'
conference:
end_date: 2025-07-18
location: Porto
name: 8th International Conference on Integrity-Reliability-Failure (IRF2025)
start_date: 2025-07-15
date_created: 2025-09-08T11:52:45Z
date_updated: 2026-02-27T06:45:17Z
doi: 10.24840/978-972-752-323-8
editor:
- first_name: J.F. Silva
full_name: Gomes, J.F. Silva
last_name: Gomes
- first_name: Shaker A.
full_name: Meguid, Shaker A.
last_name: Meguid
keyword:
- self-piercing riveting
- computed tomography
- thermoplastic composites
- process-structure-interaction
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.researchgate.net/publication/395593556_LOCAL_DEFORMATION_AND_FAILURE_OF_COMPOSITES_DURING_SELF-PIERCING_RIVETING_A_CT_BASED_MICROSTRUCTURE_INVESTIGATION
oa: '1'
place: Porto
project:
- _id: '133'
name: TRR 285 - Project Area C
- _id: '148'
name: TRR 285 - Subproject C04
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '131'
name: TRR 285 - Project Area A
- _id: '137'
name: TRR 285 - Subproject A03
- _id: '135'
name: TRR 285 - Subproject A01
publication: Proceedings of the 8th International Conference on Integrity-Reliability-Failure
(IRF2025)
publication_identifier:
isbn:
- '9789727523238'
publication_status: published
publisher: FEUP
status: public
title: 'LOCAL DEFORMATION AND FAILURE OF COMPOSITES DURING SELF-PIERCING RIVETING:
A CT BASED MICROSTRUCTURE INVESTIGATION'
type: conference
user_id: '105344'
year: '2025'
...
---
_id: '63828'
article_number: '100368'
author:
- first_name: Johannes
full_name: Gerritzen, Johannes
id: '105344'
last_name: Gerritzen
orcid: 0000-0002-0169-8602
- first_name: Kunal
full_name: Chopra, Kunal
last_name: Chopra
- first_name: Gregor
full_name: Reschke, Gregor
id: '98812'
last_name: Reschke
- first_name: Andreas
full_name: Hornig, Andreas
last_name: Hornig
- first_name: Alexander
full_name: Brosius, Alexander
last_name: Brosius
- first_name: Maik
full_name: Gude, Maik
last_name: Gude
citation:
ama: Gerritzen J, Chopra K, Reschke G, Hornig A, Brosius A, Gude M. Quality assurance
of clinched joints using explainable machine learning. Journal of Advanced
Joining Processes. 2025;13. doi:10.1016/j.jajp.2025.100368
apa: Gerritzen, J., Chopra, K., Reschke, G., Hornig, A., Brosius, A., & Gude,
M. (2025). Quality assurance of clinched joints using explainable machine learning.
Journal of Advanced Joining Processes, 13, Article 100368. https://doi.org/10.1016/j.jajp.2025.100368
bibtex: '@article{Gerritzen_Chopra_Reschke_Hornig_Brosius_Gude_2025, title={Quality
assurance of clinched joints using explainable machine learning}, volume={13},
DOI={10.1016/j.jajp.2025.100368},
number={100368}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier
BV}, author={Gerritzen, Johannes and Chopra, Kunal and Reschke, Gregor and Hornig,
Andreas and Brosius, Alexander and Gude, Maik}, year={2025} }'
chicago: Gerritzen, Johannes, Kunal Chopra, Gregor Reschke, Andreas Hornig, Alexander
Brosius, and Maik Gude. “Quality Assurance of Clinched Joints Using Explainable
Machine Learning.” Journal of Advanced Joining Processes 13 (2025). https://doi.org/10.1016/j.jajp.2025.100368.
ieee: 'J. Gerritzen, K. Chopra, G. Reschke, A. Hornig, A. Brosius, and M. Gude,
“Quality assurance of clinched joints using explainable machine learning,” Journal
of Advanced Joining Processes, vol. 13, Art. no. 100368, 2025, doi: 10.1016/j.jajp.2025.100368.'
mla: Gerritzen, Johannes, et al. “Quality Assurance of Clinched Joints Using Explainable
Machine Learning.” Journal of Advanced Joining Processes, vol. 13, 100368,
Elsevier BV, 2025, doi:10.1016/j.jajp.2025.100368.
short: J. Gerritzen, K. Chopra, G. Reschke, A. Hornig, A. Brosius, M. Gude, Journal
of Advanced Joining Processes 13 (2025).
date_created: 2026-02-02T08:32:04Z
date_updated: 2026-02-27T06:45:47Z
doi: 10.1016/j.jajp.2025.100368
intvolume: ' 13'
language:
- iso: eng
project:
- _id: '137'
name: TRR 285 - Subproject A03
- _id: '131'
name: TRR 285 - Project Area A
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '133'
name: TRR 285 - Project Area C
- _id: '148'
name: TRR 285 - Subproject C04
publication: Journal of Advanced Joining Processes
publication_identifier:
issn:
- 2666-3309
publication_status: published
publisher: Elsevier BV
status: public
title: Quality assurance of clinched joints using explainable machine learning
type: journal_article
user_id: '105344'
volume: 13
year: '2025'
...
---
_id: '58807'
abstract:
- lang: eng
text: "One of the most important strategies for reducing CO2 emissions in the mobility
sector is lightweight construction. In particular, the car body offers several
opportunities for weight reduction. Multi-material designs are increasingly being
applied to select the most suitable material for the respective load and ultimately
achieve synergy effects. For example, aluminium castings are used at the nodes
of a spaceframe body. Subsequently, these are joined with profiles to form the
bodyshell. To join different materials mechanical joining techniques, such as
semi-tubular self-piercing riveting, are deployed. According to the current state
of the art, cracks occur in the aluminium castings during the mechanical joining
process as a result of the high degree of deformation. Although the aluminium
casting alloys of the AlSi-system exhibit low ductility, these alloys reveal excellent
castability. In particular, the ability to cast thin structural parts is enabled
by the low liquidus point of the near eutectic aluminium casting alloys.\r\nThis
study addresses the mechanical joining properties of the near eutectic aluminium
casting alloy AlSi12, depending on different microstructures. These are achieved
by annealing processes and modifying agents. Through an adapted heat treatment,
the previously lamellar morphology can be transformed into a globular morphology,
which leads to increased ductility and prevents the formation of cracks during
the self-piercing riveting (SPR). The joinability is investigated using different
die geometries, whereas the joint formation is analysed regarding crack initiation.
To evaluate the increased ductility, microstructural and mechanical tests are
performed and finally, a microstructure-joinability correlation is established."
article_type: original
author:
- first_name: Moritz
full_name: Neuser, Moritz
id: '32340'
last_name: Neuser
- first_name: Pia Katharina
full_name: Holtkamp, Pia Katharina
id: '44935'
last_name: Holtkamp
- first_name: Kay-Peter
full_name: Hoyer, Kay-Peter
id: '48411'
last_name: Hoyer
- first_name: Fabian
full_name: Kappe, Fabian
id: '66459'
last_name: Kappe
- first_name: Safak
full_name: Yildiz, Safak
last_name: Yildiz
- first_name: Mathias
full_name: Bobbert, Mathias
id: '7850'
last_name: Bobbert
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Mirko
full_name: Schaper, Mirko
id: '43720'
last_name: Schaper
citation:
ama: 'Neuser M, Holtkamp PK, Hoyer K-P, et al. Mechanical properties and joinability
of the near-eutectic aluminium casting alloy AlSi12. The Journal of Materials:
Design and Applications, Part L. Published online 2025. doi:10.1177/14644207251319922'
apa: 'Neuser, M., Holtkamp, P. K., Hoyer, K.-P., Kappe, F., Yildiz, S., Bobbert,
M., Meschut, G., & Schaper, M. (2025). Mechanical properties and joinability
of the near-eutectic aluminium casting alloy AlSi12. The Journal of Materials:
Design and Applications, Part L. 5th International Conference on Materials
Design and Applications 2024, Porto, Portugal. https://doi.org/10.1177/14644207251319922'
bibtex: '@article{Neuser_Holtkamp_Hoyer_Kappe_Yildiz_Bobbert_Meschut_Schaper_2025,
title={Mechanical properties and joinability of the near-eutectic aluminium casting
alloy AlSi12}, DOI={10.1177/14644207251319922},
journal={The Journal of Materials: Design and Applications, Part L}, publisher={Sage
Publications}, author={Neuser, Moritz and Holtkamp, Pia Katharina and Hoyer, Kay-Peter
and Kappe, Fabian and Yildiz, Safak and Bobbert, Mathias and Meschut, Gerson and
Schaper, Mirko}, year={2025} }'
chicago: 'Neuser, Moritz, Pia Katharina Holtkamp, Kay-Peter Hoyer, Fabian Kappe,
Safak Yildiz, Mathias Bobbert, Gerson Meschut, and Mirko Schaper. “Mechanical
Properties and Joinability of the Near-Eutectic Aluminium Casting Alloy AlSi12.”
The Journal of Materials: Design and Applications, Part L, 2025. https://doi.org/10.1177/14644207251319922.'
ieee: 'M. Neuser et al., “Mechanical properties and joinability of the near-eutectic
aluminium casting alloy AlSi12,” The Journal of Materials: Design and Applications,
Part L, 2025, doi: 10.1177/14644207251319922.'
mla: 'Neuser, Moritz, et al. “Mechanical Properties and Joinability of the Near-Eutectic
Aluminium Casting Alloy AlSi12.” The Journal of Materials: Design and Applications,
Part L, Sage Publications, 2025, doi:10.1177/14644207251319922.'
short: 'M. Neuser, P.K. Holtkamp, K.-P. Hoyer, F. Kappe, S. Yildiz, M. Bobbert,
G. Meschut, M. Schaper, The Journal of Materials: Design and Applications, Part
L (2025).'
conference:
end_date: 2024-07-05
location: Porto, Portugal
name: 5th International Conference on Materials Design and Applications 2024
start_date: 2024-07-04
date_created: 2025-02-24T10:25:31Z
date_updated: 2025-02-24T12:25:04Z
department:
- _id: '43'
- _id: '158'
- _id: '157'
- _id: '9'
- _id: '321'
doi: 10.1177/14644207251319922
has_accepted_license: '1'
keyword:
- aluminium
- casting
- microstructure
- joinability
- self-piercing riveting
language:
- iso: eng
project:
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '136'
name: 'TRR 285 – A02: TRR 285 - Subproject A02'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '146'
name: 'TRR 285 – C02: TRR 285 - Subproject C02'
publication: 'The Journal of Materials: Design and Applications, Part L'
publication_status: published
publisher: Sage Publications
quality_controlled: '1'
status: public
title: Mechanical properties and joinability of the near-eutectic aluminium casting
alloy AlSi12
type: journal_article
user_id: '32340'
year: '2025'
...
---
_id: '60290'
abstract:
- lang: eng
text: The constantly increasing demand for climate protection and resource conservation
requires innovative and versatile joining processes that improve adaptability
to the joining task and robustness to enable flexible manufacturing on a production
line. Therefore, the versatile SPR (V-SPR) and tumbling SPR (T-SPR) were developed.
Using the example of a mixed material combination HCT590X+Z (t0 = 1.0 mm) / EN
AW-6014 T4 (t0 = 2.0 mm), these processes were examined and compared with regard
to the binding mechanisms form closure and force closure using micrographs, non-destructive
resistance measurements and destructive torsion tests. For this purpose, a new
sample geometry was defined, and the methods were adapted to the SPR process variants.
author:
- first_name: Stephan
full_name: Lüder, Stephan
last_name: Lüder
- first_name: Pia Katharina
full_name: Holtkamp, Pia Katharina
id: '44935'
last_name: Holtkamp
- first_name: Simon
full_name: Wituschek, Simon
last_name: Wituschek
- first_name: Mathias
full_name: Bobbert, Mathias
id: '7850'
last_name: Bobbert
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Michael
full_name: Lechner, Michael
last_name: Lechner
- first_name: Hans Christian
full_name: Schmale, Hans Christian
last_name: Schmale
citation:
ama: 'Lüder S, Holtkamp PK, Wituschek S, et al. Analysis of the binding mechanisms
depending on versatile process variants of self-piercing riveting. In: Meschut
G, Bobbert M, Duflou J, et al., eds. Materials Research Proceedings. Vol
52. Sheet Metal 2025. Materials Research Forum LLC; 2025:101-108. doi:10.21741/9781644903551-13'
apa: Lüder, S., Holtkamp, P. K., Wituschek, S., Bobbert, M., Meschut, G., Lechner,
M., & Schmale, H. C. (2025). Analysis of the binding mechanisms depending
on versatile process variants of self-piercing riveting. In G. Meschut, M. Bobbert,
J. Duflou, L. Fratini, H. Hagenah, P. A. F. Martins, M. Merklein, & F. Micari
(Eds.), Materials Research Proceedings (Vol. 52, pp. 101–108). Materials
Research Forum LLC. https://doi.org/10.21741/9781644903551-13
bibtex: '@inproceedings{Lüder_Holtkamp_Wituschek_Bobbert_Meschut_Lechner_Schmale_2025,
place={Millersville}, series={Sheet Metal 2025}, title={Analysis of the binding
mechanisms depending on versatile process variants of self-piercing riveting},
volume={52}, DOI={10.21741/9781644903551-13},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Lüder, Stephan and Holtkamp, Pia Katharina and Wituschek, Simon
and Bobbert, Mathias and Meschut, Gerson and Lechner, Michael and Schmale, Hans
Christian}, editor={Meschut, Gerson and Bobbert, Mathias and Duflou, Joost and
Fratini, Livan and Hagenah, Hinnerk and Martins, Paulo A. F. and Merklein, Marion
and Micari, Fabrizio}, year={2025}, pages={101–108}, collection={Sheet Metal 2025}
}'
chicago: 'Lüder, Stephan, Pia Katharina Holtkamp, Simon Wituschek, Mathias Bobbert,
Gerson Meschut, Michael Lechner, and Hans Christian Schmale. “Analysis of the
Binding Mechanisms Depending on Versatile Process Variants of Self-Piercing Riveting.”
In Materials Research Proceedings, edited by Gerson Meschut, Mathias Bobbert,
Joost Duflou, Livan Fratini, Hinnerk Hagenah, Paulo A. F. Martins, Marion Merklein,
and Fabrizio Micari, 52:101–8. Sheet Metal 2025. Millersville: Materials Research
Forum LLC, 2025. https://doi.org/10.21741/9781644903551-13.'
ieee: 'S. Lüder et al., “Analysis of the binding mechanisms depending on
versatile process variants of self-piercing riveting,” in Materials Research
Proceedings, Paderborn, 2025, vol. 52, pp. 101–108, doi: 10.21741/9781644903551-13.'
mla: Lüder, Stephan, et al. “Analysis of the Binding Mechanisms Depending on Versatile
Process Variants of Self-Piercing Riveting.” Materials Research Proceedings,
edited by Gerson Meschut et al., vol. 52, Materials Research Forum LLC, 2025,
pp. 101–08, doi:10.21741/9781644903551-13.
short: 'S. Lüder, P.K. Holtkamp, S. Wituschek, M. Bobbert, G. Meschut, M. Lechner,
H.C. Schmale, in: G. Meschut, M. Bobbert, J. Duflou, L. Fratini, H. Hagenah, P.A.F.
Martins, M. Merklein, F. Micari (Eds.), Materials Research Proceedings, Materials
Research Forum LLC, Millersville, 2025, pp. 101–108.'
conference:
end_date: 2025-04-03
location: Paderborn
name: 21st International Conference on Sheet Metal
start_date: 2025-04-01
date_created: 2025-06-20T10:13:22Z
date_updated: 2025-06-27T08:19:26Z
department:
- _id: '630'
- _id: '43'
- _id: '157'
doi: 10.21741/9781644903551-13
editor:
- first_name: Gerson
full_name: Meschut, Gerson
last_name: Meschut
- first_name: Mathias
full_name: Bobbert, Mathias
last_name: Bobbert
- first_name: Joost
full_name: Duflou, Joost
last_name: Duflou
- first_name: Livan
full_name: Fratini, Livan
last_name: Fratini
- first_name: Hinnerk
full_name: Hagenah, Hinnerk
last_name: Hagenah
- first_name: Paulo A. F.
full_name: Martins, Paulo A. F.
last_name: Martins
- first_name: Marion
full_name: Merklein, Marion
last_name: Merklein
- first_name: Fabrizio
full_name: Micari, Fabrizio
last_name: Micari
extern: '1'
intvolume: ' 52'
keyword:
- Joining
- Self-Piercing Riveting
- Sheet Metal
language:
- iso: eng
page: 101 - 108
place: Millersville
project:
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '138'
name: 'TRR 285 – A04: TRR 285 - Subproject A04'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '146'
name: 'TRR 285 – C02: TRR 285 - Subproject C02'
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
series_title: Sheet Metal 2025
status: public
title: Analysis of the binding mechanisms depending on versatile process variants
of self-piercing riveting
type: conference
user_id: '44935'
volume: 52
year: '2025'
...
---
_id: '60441'
abstract:
- lang: eng
text: Conventional mechanical joining processes are typically rigid in their tool
systems and can only react to changing process and disturbance variables to a
limited extent. At the same time, various industries are increasingly trending
towards multi-material systems consisting of parts with varying geometric and
mechanical properties. Due to the varying properties, rigid mechanical joining
processes require sampling procedures and periodic changes of tool components
or auxiliary joining parts. Consequently, research is focusing on versatile mechanical
joining processes that allow increased control by modifying the process parameters.
Two processes based on self-piercing riveting can achieve a significant increase
in process influence possibilities through a multi-linear actuator as versatile
self-piercing riveting (V-SPR) and a tumbling superimposed actuator as tumbling
self-piercing riveting (T-SPR). Initial research into V-SPR has shown that this
process can be used to achieve a higher variation in overall package thickness
by adapting the rivet geometry and using multiple linear actuators. The T-SPR
process also enables increased material flow control by means of targeted compression
of the rivet using the tumbling actuator, thereby extending the range of joints
that can be manufactured. Based on these two processes, a combination of the two
mechanisms of action is to be developed.
article_number: '01069'
author:
- first_name: Pia Katharina
full_name: Holtkamp, Pia Katharina
id: '44935'
last_name: Holtkamp
- first_name: Simon
full_name: Wituschek, Simon
id: '83423'
last_name: Wituschek
- first_name: Michael
full_name: Lechner, Michael
last_name: Lechner
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: Holtkamp PK, Wituschek S, Lechner M, Meschut G. Integration of multiple-linear
and tumbling kinematics into self-piercing riveting. MATEC Web of Conferences.
2025;408. doi:10.1051/matecconf/202540801069
apa: Holtkamp, P. K., Wituschek, S., Lechner, M., & Meschut, G. (2025). Integration
of multiple-linear and tumbling kinematics into self-piercing riveting. MATEC
Web of Conferences, 408, Article 01069. https://doi.org/10.1051/matecconf/202540801069
bibtex: '@article{Holtkamp_Wituschek_Lechner_Meschut_2025, title={Integration of
multiple-linear and tumbling kinematics into self-piercing riveting}, volume={408},
DOI={10.1051/matecconf/202540801069},
number={01069}, journal={MATEC Web of Conferences}, publisher={EDP Sciences},
author={Holtkamp, Pia Katharina and Wituschek, Simon and Lechner, Michael and
Meschut, Gerson}, year={2025} }'
chicago: Holtkamp, Pia Katharina, Simon Wituschek, Michael Lechner, and Gerson Meschut.
“Integration of Multiple-Linear and Tumbling Kinematics into Self-Piercing Riveting.”
MATEC Web of Conferences 408 (2025). https://doi.org/10.1051/matecconf/202540801069.
ieee: 'P. K. Holtkamp, S. Wituschek, M. Lechner, and G. Meschut, “Integration of
multiple-linear and tumbling kinematics into self-piercing riveting,” MATEC
Web of Conferences, vol. 408, Art. no. 01069, 2025, doi: 10.1051/matecconf/202540801069.'
mla: Holtkamp, Pia Katharina, et al. “Integration of Multiple-Linear and Tumbling
Kinematics into Self-Piercing Riveting.” MATEC Web of Conferences, vol.
408, 01069, EDP Sciences, 2025, doi:10.1051/matecconf/202540801069.
short: P.K. Holtkamp, S. Wituschek, M. Lechner, G. Meschut, MATEC Web of Conferences
408 (2025).
date_created: 2025-06-27T08:27:42Z
date_updated: 2025-06-27T08:34:46Z
department:
- _id: '43'
- _id: '157'
doi: 10.1051/matecconf/202540801069
intvolume: ' 408'
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '146'
name: 'TRR 285 – C02: TRR 285 - Subproject C02'
publication: MATEC Web of Conferences
publication_identifier:
issn:
- 2261-236X
publication_status: published
publisher: EDP Sciences
quality_controlled: '1'
status: public
title: Integration of multiple-linear and tumbling kinematics into self-piercing riveting
type: journal_article
user_id: '44935'
volume: 408
year: '2025'
...
---
_id: '60439'
abstract:
- lang: eng
text: Abstract. Mechanical joints are traditionally analyzed through destructive
micrograph analysis, which may compromise internal geometry and morphology, as
evidenced by radial cracks in semi-tubular self-pierce riveting. In contrast,
industrial X-ray computed tomography (XCT) offers a non-destructive method for
component diagnosis, providing volumetric insights without damaging the sample
and enabling dimensional measurement. The DFG-funded Collaborative Research Center
TRR 285 is exploring XCT's application in assessing mechanical joinability across
various joining processes and materials, particularly in multi-material systems
like steel-aluminum joints. XCT faces challenges in accurately capturing multi-material
compositions, leading to artifacts that complicate interface detection. This research
aims to validate XCT for joint investigations, yielding quantitative characteristics
that surpass those from traditional micrograph analysis.
author:
- first_name: M.
full_name: Lechner, M.
last_name: Lechner
- first_name: Thomas
full_name: Borgert, Thomas
id: '83141'
last_name: Borgert
- first_name: Matthias
full_name: Busch, Matthias
id: '83421'
last_name: Busch
orcid: https://orcid.org/0000-0002-8456-3374
- first_name: A.
full_name: Harms, A.
last_name: Harms
- first_name: Pia Katharina
full_name: Holtkamp, Pia Katharina
id: '44935'
last_name: Holtkamp
- first_name: D.
full_name: Römisch, D.
last_name: Römisch
- first_name: Simon
full_name: Wituschek, Simon
id: '83423'
last_name: Wituschek
- first_name: Fabian
full_name: Kappe, Fabian
id: '66459'
last_name: Kappe
citation:
ama: 'Lechner M, Borgert T, Busch M, et al. Non-destructive testing in versatile
joining processes. In: Materials Research Proceedings. Vol 52. Materials
Research Forum LLC; 2025. doi:10.21741/9781644903551-12'
apa: Lechner, M., Borgert, T., Busch, M., Harms, A., Holtkamp, P. K., Römisch, D.,
Wituschek, S., & Kappe, F. (2025). Non-destructive testing in versatile joining
processes. Materials Research Proceedings, 52. https://doi.org/10.21741/9781644903551-12
bibtex: '@inproceedings{Lechner_Borgert_Busch_Harms_Holtkamp_Römisch_Wituschek_Kappe_2025,
title={Non-destructive testing in versatile joining processes}, volume={52}, DOI={10.21741/9781644903551-12},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Lechner, M. and Borgert, Thomas and Busch, Matthias and Harms, A.
and Holtkamp, Pia Katharina and Römisch, D. and Wituschek, Simon and Kappe, Fabian},
year={2025} }'
chicago: Lechner, M., Thomas Borgert, Matthias Busch, A. Harms, Pia Katharina Holtkamp,
D. Römisch, Simon Wituschek, and Fabian Kappe. “Non-Destructive Testing in Versatile
Joining Processes.” In Materials Research Proceedings, Vol. 52. Materials
Research Forum LLC, 2025. https://doi.org/10.21741/9781644903551-12.
ieee: 'M. Lechner et al., “Non-destructive testing in versatile joining processes,”
in Materials Research Proceedings, 2025, vol. 52, doi: 10.21741/9781644903551-12.'
mla: Lechner, M., et al. “Non-Destructive Testing in Versatile Joining Processes.”
Materials Research Proceedings, vol. 52, Materials Research Forum LLC,
2025, doi:10.21741/9781644903551-12.
short: 'M. Lechner, T. Borgert, M. Busch, A. Harms, P.K. Holtkamp, D. Römisch, S.
Wituschek, F. Kappe, in: Materials Research Proceedings, Materials Research Forum
LLC, 2025.'
date_created: 2025-06-27T07:56:32Z
date_updated: 2025-06-27T08:17:00Z
department:
- _id: '43'
- _id: '157'
doi: 10.21741/9781644903551-12
intvolume: ' 52'
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '145'
name: 'TRR 285 – C01: TRR 285 - Subproject C01'
- _id: '147'
name: 'TRR 285 – C03: TRR 285 - Subproject C03'
- _id: '146'
name: 'TRR 285 – C02: TRR 285 - Subproject C02'
- _id: '149'
name: 'TRR 285 – C05: TRR 285 - Subproject C05'
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
status: public
title: Non-destructive testing in versatile joining processes
type: conference
user_id: '44935'
volume: 52
year: '2025'
...
---
_id: '58348'
abstract:
- lang: eng
text: ' Clinching is a mechanical joining technology, in which a mainly
form-fit joint is created by means of local cold forming. To characterize the
load-bearing behavior of such joints, they are typically analyzed destructively,
for example by tensile-shear tests in combination with metallographic sections.
However, both the initiation and progress of failure can only be described to
a limited extent by this method. Furthermore, these tests allow only limited conclusions
about clinch points under in-service loading. More purposefully, clinch points
can be analyzed nondestructively by combining in-situ computed tomography (CT)
and transient dynamic analysis (TDA). The TDA continuously measures the dynamic
behavior of the specimen and indicates failure events like crack initiation, which
then can be evaluated thoroughly by stopping the test and performing a CT scan.
To qualify the TDA for this task, it is necessary to link the observed damage
behavior with specific dynamic characteristics. In this work, the complementation
of in-situ CT and TDA is investigated by testing a clinched single-lap tensile-shear
specimen made of aluminum. The testing procedure is stepwise: at certain displacement
levels, the specimen is investigated by in-situ CT and TDA. While the in-situ
CT provides the location, extent, and development of the failure phenomena, the
TDA uses this information to evaluate the dynamic signal and detect relevant frequency
ranges, which indicate damage events. The results demonstrate, that failure initiation
and progression can be analyzed efficiently by combining both measuring systems.
The TDA reliably detects relevant signal changes in the monitored frequency band.
By means of in-situ computed tomography, the corresponding failure phenomena can
be described in detail, enhancing the understanding of the load-bearing and deformation
behavior of clinch points. The concatenation of characteristic signal changes
and observed failure phenomena can henceforth be transferred to analyze complex
structures during operation nondestructively by TDA. '
article_type: original
author:
- first_name: Gregor
full_name: Reschke, Gregor
last_name: Reschke
- first_name: Daniel
full_name: Köhler, Daniel
last_name: Köhler
- first_name: Robert
full_name: Kupfer, Robert
last_name: Kupfer
- first_name: Juliane
full_name: Troschitz, Juliane
last_name: Troschitz
- first_name: Maik
full_name: Gude, Maik
last_name: Gude
- first_name: Alexander
full_name: Brosius, Alexander
last_name: Brosius
citation:
ama: 'Reschke G, Köhler D, Kupfer R, Troschitz J, Gude M, Brosius A. In-situ computed
tomography and transient dynamic analysis – failure analysis of a single-lap tensile-shear
test with clinch points. Proceedings of the Institution of Mechanical Engineers,
Part E: Journal of Process Mechanical Engineering. Published online 2024.
doi:10.1177/09544089241251646'
apa: 'Reschke, G., Köhler, D., Kupfer, R., Troschitz, J., Gude, M., & Brosius,
A. (2024). In-situ computed tomography and transient dynamic analysis – failure
analysis of a single-lap tensile-shear test with clinch points. Proceedings
of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical
Engineering. https://doi.org/10.1177/09544089241251646'
bibtex: '@article{Reschke_Köhler_Kupfer_Troschitz_Gude_Brosius_2024, title={In-situ
computed tomography and transient dynamic analysis – failure analysis of a single-lap
tensile-shear test with clinch points}, DOI={10.1177/09544089241251646},
journal={Proceedings of the Institution of Mechanical Engineers, Part E: Journal
of Process Mechanical Engineering}, publisher={SAGE Publications}, author={Reschke,
Gregor and Köhler, Daniel and Kupfer, Robert and Troschitz, Juliane and Gude,
Maik and Brosius, Alexander}, year={2024} }'
chicago: 'Reschke, Gregor, Daniel Köhler, Robert Kupfer, Juliane Troschitz, Maik
Gude, and Alexander Brosius. “In-Situ Computed Tomography and Transient Dynamic
Analysis – Failure Analysis of a Single-Lap Tensile-Shear Test with Clinch Points.”
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of
Process Mechanical Engineering, 2024. https://doi.org/10.1177/09544089241251646.'
ieee: 'G. Reschke, D. Köhler, R. Kupfer, J. Troschitz, M. Gude, and A. Brosius,
“In-situ computed tomography and transient dynamic analysis – failure analysis
of a single-lap tensile-shear test with clinch points,” Proceedings of the
Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering,
2024, doi: 10.1177/09544089241251646.'
mla: 'Reschke, Gregor, et al. “In-Situ Computed Tomography and Transient Dynamic
Analysis – Failure Analysis of a Single-Lap Tensile-Shear Test with Clinch Points.”
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of
Process Mechanical Engineering, SAGE Publications, 2024, doi:10.1177/09544089241251646.'
short: 'G. Reschke, D. Köhler, R. Kupfer, J. Troschitz, M. Gude, A. Brosius, Proceedings
of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical
Engineering (2024).'
date_created: 2025-01-23T19:21:45Z
date_updated: 2025-01-23T19:32:03Z
department:
- _id: '43'
- _id: '157'
doi: 10.1177/09544089241251646
keyword:
- Clinching
- Non-destructive testing
- Transient Dynamic Analysis
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
project:
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: 'Proceedings of the Institution of Mechanical Engineers, Part E: Journal
of Process Mechanical Engineering'
publication_identifier:
issn:
- 0954-4089
- 2041-3009
publication_status: published
publisher: SAGE Publications
quality_controlled: '1'
status: public
title: In-situ computed tomography and transient dynamic analysis – failure analysis
of a single-lap tensile-shear test with clinch points
type: journal_article
user_id: '98812'
year: '2024'
...
---
_id: '60106'
abstract:
- lang: eng
text: ' Clinching is a mechanical joining technology, in which a mainly
form-fit joint is created by means of local cold forming. To characterize the
load-bearing behavior of such joints, they are typically analyzed destructively,
for example by tensile-shear tests in combination with metallographic sections.
However, both the initiation and progress of failure can only be described to
a limited extent by this method. Furthermore, these tests allow only limited conclusions
about clinch points under in-service loading. More purposefully, clinch points
can be analyzed nondestructively by combining in-situ computed tomography (CT)
and transient dynamic analysis (TDA). The TDA continuously measures the dynamic
behavior of the specimen and indicates failure events like crack initiation, which
then can be evaluated thoroughly by stopping the test and performing a CT scan.
To qualify the TDA for this task, it is necessary to link the observed damage
behavior with specific dynamic characteristics. In this work, the complementation
of in-situ CT and TDA is investigated by testing a clinched single-lap tensile-shear
specimen made of aluminum. The testing procedure is stepwise: at certain displacement
levels, the specimen is investigated by in-situ CT and TDA. While the in-situ
CT provides the location, extent, and development of the failure phenomena, the
TDA uses this information to evaluate the dynamic signal and detect relevant frequency
ranges, which indicate damage events. The results demonstrate, that failure initiation
and progression can be analyzed efficiently by combining both measuring systems.
The TDA reliably detects relevant signal changes in the monitored frequency band.
By means of in-situ computed tomography, the corresponding failure phenomena can
be described in detail, enhancing the understanding of the load-bearing and deformation
behavior of clinch points. The concatenation of characteristic signal changes
and observed failure phenomena can henceforth be transferred to analyze complex
structures during operation nondestructively by TDA. '
author:
- first_name: G
full_name: Reschke, G
last_name: Reschke
- first_name: D
full_name: Köhler, D
last_name: Köhler
- first_name: R
full_name: Kupfer, R
last_name: Kupfer
- first_name: J
full_name: Troschitz, J
last_name: Troschitz
- first_name: M
full_name: Gude, M
last_name: Gude
- first_name: A
full_name: Brosius, A
last_name: Brosius
citation:
ama: 'Reschke G, Köhler D, Kupfer R, Troschitz J, Gude M, Brosius A. In-situ computed
tomography and transient dynamic analysis – failure analysis of a single-lap tensile-shear
test with clinch points. Proceedings of the Institution of Mechanical Engineers,
Part E: Journal of Process Mechanical Engineering. Published online 2024.
doi:10.1177/09544089241251646'
apa: 'Reschke, G., Köhler, D., Kupfer, R., Troschitz, J., Gude, M., & Brosius,
A. (2024). In-situ computed tomography and transient dynamic analysis – failure
analysis of a single-lap tensile-shear test with clinch points. Proceedings
of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical
Engineering. https://doi.org/10.1177/09544089241251646'
bibtex: '@article{Reschke_Köhler_Kupfer_Troschitz_Gude_Brosius_2024, title={In-situ
computed tomography and transient dynamic analysis – failure analysis of a single-lap
tensile-shear test with clinch points}, DOI={10.1177/09544089241251646},
journal={Proceedings of the Institution of Mechanical Engineers, Part E: Journal
of Process Mechanical Engineering}, publisher={SAGE Publications}, author={Reschke,
G and Köhler, D and Kupfer, R and Troschitz, J and Gude, M and Brosius, A}, year={2024}
}'
chicago: 'Reschke, G, D Köhler, R Kupfer, J Troschitz, M Gude, and A Brosius. “In-Situ
Computed Tomography and Transient Dynamic Analysis – Failure Analysis of a Single-Lap
Tensile-Shear Test with Clinch Points.” Proceedings of the Institution of Mechanical
Engineers, Part E: Journal of Process Mechanical Engineering, 2024. https://doi.org/10.1177/09544089241251646.'
ieee: 'G. Reschke, D. Köhler, R. Kupfer, J. Troschitz, M. Gude, and A. Brosius,
“In-situ computed tomography and transient dynamic analysis – failure analysis
of a single-lap tensile-shear test with clinch points,” Proceedings of the
Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering,
2024, doi: 10.1177/09544089241251646.'
mla: 'Reschke, G., et al. “In-Situ Computed Tomography and Transient Dynamic Analysis
– Failure Analysis of a Single-Lap Tensile-Shear Test with Clinch Points.” Proceedings
of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical
Engineering, SAGE Publications, 2024, doi:10.1177/09544089241251646.'
short: 'G. Reschke, D. Köhler, R. Kupfer, J. Troschitz, M. Gude, A. Brosius, Proceedings
of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical
Engineering (2024).'
date_created: 2025-06-02T20:03:39Z
date_updated: 2025-06-02T20:18:31Z
department:
- _id: '157'
- _id: '43'
doi: 10.1177/09544089241251646
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: 'Proceedings of the Institution of Mechanical Engineers, Part E: Journal
of Process Mechanical Engineering'
publication_identifier:
issn:
- 0954-4089
- 2041-3009
publication_status: published
publisher: SAGE Publications
status: public
title: In-situ computed tomography and transient dynamic analysis – failure analysis
of a single-lap tensile-shear test with clinch points
type: journal_article
user_id: '83408'
year: '2024'
...
---
_id: '60105'
abstract:
- lang: eng
text: Lightweight design by using low-density and load-adapted materials
can reduce the weight of vehicles and the emissions generated during operation.
However, the usage of different materials requires innovative joining technologies
with increased versatility. In this investigation, the focus is on describing
and characterising the failure behaviour of connections manufactured by an innovative
thermomechanical joining process with adaptable auxiliary joining elements in
single-lap tensile-shear tests. In order to analyse the failure development in
detail, the specimens are investigated using in-situ computed tomography (in-situ
CT). Here, the tensile-shear test is interrupted at points of interest and CT
scans are conducted under load. In addition, the interrupted in-situ testing procedure
is validated by comparing the loading behaviour with conventional continuous tensile-shear
tests. The results of the in-situ investigations of joints with varying material
combinations clearly describe the cause of failure, allowing conclusions towards
an improved joint design.
author:
- first_name: T
full_name: Borgert, T
last_name: Borgert
- first_name: D
full_name: Köhler, D
last_name: Köhler
- first_name: E.
full_name: Wiens, E.
last_name: Wiens
- first_name: R
full_name: Kupfer, R
last_name: Kupfer
- first_name: J
full_name: Troschitz, J
last_name: Troschitz
- first_name: W
full_name: Homberg, W
last_name: Homberg
- first_name: M
full_name: Gude, M
last_name: Gude
citation:
ama: 'Borgert T, Köhler D, Wiens E, et al. In-situ computed tomography analysis
of the failure mechanisms of thermomechanically manufactured joints with auxiliary
joining element. Proceedings of the Institution of Mechanical Engineers, Part
L: Journal of Materials: Design and Applications. 2024;238(12):2299-2306.
doi:10.1177/14644207241232233'
apa: 'Borgert, T., Köhler, D., Wiens, E., Kupfer, R., Troschitz, J., Homberg, W.,
& Gude, M. (2024). In-situ computed tomography analysis of the failure mechanisms
of thermomechanically manufactured joints with auxiliary joining element. Proceedings
of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design
and Applications, 238(12), 2299–2306. https://doi.org/10.1177/14644207241232233'
bibtex: '@article{Borgert_Köhler_Wiens_Kupfer_Troschitz_Homberg_Gude_2024, title={In-situ
computed tomography analysis of the failure mechanisms of thermomechanically manufactured
joints with auxiliary joining element}, volume={238}, DOI={10.1177/14644207241232233},
number={12}, journal={Proceedings of the Institution of Mechanical Engineers,
Part L: Journal of Materials: Design and Applications}, publisher={SAGE Publications},
author={Borgert, T and Köhler, D and Wiens, E. and Kupfer, R and Troschitz, J
and Homberg, W and Gude, M}, year={2024}, pages={2299–2306} }'
chicago: 'Borgert, T, D Köhler, E. Wiens, R Kupfer, J Troschitz, W Homberg, and
M Gude. “In-Situ Computed Tomography Analysis of the Failure Mechanisms of Thermomechanically
Manufactured Joints with Auxiliary Joining Element.” Proceedings of the Institution
of Mechanical Engineers, Part L: Journal of Materials: Design and Applications
238, no. 12 (2024): 2299–2306. https://doi.org/10.1177/14644207241232233.'
ieee: 'T. Borgert et al., “In-situ computed tomography analysis of the failure
mechanisms of thermomechanically manufactured joints with auxiliary joining element,”
Proceedings of the Institution of Mechanical Engineers, Part L: Journal of
Materials: Design and Applications, vol. 238, no. 12, pp. 2299–2306, 2024,
doi: 10.1177/14644207241232233.'
mla: 'Borgert, T., et al. “In-Situ Computed Tomography Analysis of the Failure Mechanisms
of Thermomechanically Manufactured Joints with Auxiliary Joining Element.” Proceedings
of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design
and Applications, vol. 238, no. 12, SAGE Publications, 2024, pp. 2299–306,
doi:10.1177/14644207241232233.'
short: 'T. Borgert, D. Köhler, E. Wiens, R. Kupfer, J. Troschitz, W. Homberg, M.
Gude, Proceedings of the Institution of Mechanical Engineers, Part L: Journal
of Materials: Design and Applications 238 (2024) 2299–2306.'
date_created: 2025-06-02T20:01:39Z
date_updated: 2025-06-02T20:18:42Z
ddc:
- '620'
department:
- _id: '157'
- _id: '43'
doi: 10.1177/14644207241232233
has_accepted_license: '1'
intvolume: ' 238'
issue: '12'
language:
- iso: eng
page: 2299-2306
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
name: 'TRR 285 – C04: TRR 285 - Subproject C04'
- _id: '147'
name: 'TRR 285 – C03: TRR 285 - Subproject C03'
publication: 'Proceedings of the Institution of Mechanical Engineers, Part L: Journal
of Materials: Design and Applications'
publication_identifier:
issn:
- 1464-4207
- 2041-3076
publication_status: published
publisher: SAGE Publications
status: public
title: In-situ computed tomography analysis of the failure mechanisms of thermomechanically
manufactured joints with auxiliary joining element
type: journal_article
user_id: '83408'
volume: 238
year: '2024'
...
---
_id: '60107'
abstract:
- lang: eng
text: Abstract. In lightweight constructions, clinching represents a cost-effective
solution, in which joints are produced by local cold forming of the joining parts.
Clinching phenomena are typically evaluated using destructive testing methods.
While these methods influence the clinch point’s state, in-situ computed tomography
(in-situ CT) is able to explore the clinching process with a specimen under load.
Here, the path-controlled clinching process is interrupted at certain displacement
levels and the specimen is scanned by CT while remaining in a stationary state.
These interruptions are always accompanied by settling effects reducing the reaction
force. Therefore, in this work, the influence of these interruptions on the force-displacement
behavior during clinching and on the final clinch point’s geometric properties
is investigated.
author:
- first_name: D.
full_name: Köhler, D.
last_name: Köhler
- first_name: R.
full_name: Kupfer, R.
last_name: Kupfer
- first_name: J.
full_name: Troschitz, J.
last_name: Troschitz
- first_name: M.
full_name: Gude, M.
last_name: Gude
citation:
ama: 'Köhler D, Kupfer R, Troschitz J, Gude M. In-situ CT of the clinching process
– Influence of settling effects due to process interruptions. In: Materials
Research Proceedings. Vol 41. Materials Research Forum LLC; 2024. doi:10.21741/9781644903131-187'
apa: Köhler, D., Kupfer, R., Troschitz, J., & Gude, M. (2024). In-situ CT of
the clinching process – Influence of settling effects due to process interruptions.
Materials Research Proceedings, 41. https://doi.org/10.21741/9781644903131-187
bibtex: '@inproceedings{Köhler_Kupfer_Troschitz_Gude_2024, title={In-situ CT of
the clinching process – Influence of settling effects due to process interruptions},
volume={41}, DOI={10.21741/9781644903131-187},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Köhler, D. and Kupfer, R. and Troschitz, J. and Gude, M.}, year={2024}
}'
chicago: Köhler, D., R. Kupfer, J. Troschitz, and M. Gude. “In-Situ CT of the Clinching
Process – Influence of Settling Effects Due to Process Interruptions.” In Materials
Research Proceedings, Vol. 41. Materials Research Forum LLC, 2024. https://doi.org/10.21741/9781644903131-187.
ieee: 'D. Köhler, R. Kupfer, J. Troschitz, and M. Gude, “In-situ CT of the clinching
process – Influence of settling effects due to process interruptions,” in Materials
Research Proceedings, 2024, vol. 41, doi: 10.21741/9781644903131-187.'
mla: Köhler, D., et al. “In-Situ CT of the Clinching Process – Influence of Settling
Effects Due to Process Interruptions.” Materials Research Proceedings,
vol. 41, Materials Research Forum LLC, 2024, doi:10.21741/9781644903131-187.
short: 'D. Köhler, R. Kupfer, J. Troschitz, M. Gude, in: Materials Research Proceedings,
Materials Research Forum LLC, 2024.'
date_created: 2025-06-02T20:04:17Z
date_updated: 2025-06-02T20:18:11Z
department:
- _id: '157'
- _id: '43'
doi: 10.21741/9781644903131-187
intvolume: ' 41'
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
status: public
title: In-situ CT of the clinching process – Influence of settling effects due to
process interruptions
type: conference
user_id: '83408'
volume: 41
year: '2024'
...
---
_id: '54650'
abstract:
- lang: eng
text: Abstract. Reducing the weight of vehicles can significantly lower
the energy or fuel consumed and thus the emissions during operation. One possibility
to assess this is the use of a property adapted multi-material systems containing
high strength steel, light metals like aluminium or magnesium and fibre reinforced
plastics. While expanding the number of materials used new challenges arise for
the production and furthermore the joining technology to manufacture the vehicle
made of the multi-material systems. One approach to overcome these challenges
is to use innovative and adaptable joining techniques which allows the manufacturing
of joints of different material combinations. Extensive research activities on
the two stage thermo-mechanical joining process with adaptable joining elements
was able to demonstrate the great potentials in terms of joining dissimilar materials
with good strength. The previously kinematic and path-based fabrication of auxiliary
joining elements is modified in this publication to a form-based approach with
a perspective of establishing an efficient process chain using easily and cheaply
available rods. Based on the new approach to produce the auxiliary joining elements,
it can be demonstrated that a reproducible production of the geometry is possible
for the investigated steel as well as aluminium material.
author:
- first_name: Thomas
full_name: Borgert, Thomas
id: '83141'
last_name: Borgert
- first_name: Ansgar Bernhard
full_name: Nordieker, Ansgar Bernhard
id: '88725'
last_name: Nordieker
- first_name: Werner
full_name: Homberg, Werner
id: '233'
last_name: Homberg
citation:
ama: 'Borgert T, Nordieker AB, Homberg W. Form-based manufacturing of aluminium
and steel auxiliary joining elements as the basis for an efficient joining operation.
In: Materials Research Proceedings. Materials Research Forum LLC; 2024.
doi:10.21741/9781644903131-180'
apa: Borgert, T., Nordieker, A. B., & Homberg, W. (2024). Form-based manufacturing
of aluminium and steel auxiliary joining elements as the basis for an efficient
joining operation. Materials Research Proceedings. ESAFORM 2024, Toulouse.
https://doi.org/10.21741/9781644903131-180
bibtex: '@inproceedings{Borgert_Nordieker_Homberg_2024, title={Form-based manufacturing
of aluminium and steel auxiliary joining elements as the basis for an efficient
joining operation}, DOI={10.21741/9781644903131-180},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Borgert, Thomas and Nordieker, Ansgar Bernhard and Homberg, Werner},
year={2024} }'
chicago: Borgert, Thomas, Ansgar Bernhard Nordieker, and Werner Homberg. “Form-Based
Manufacturing of Aluminium and Steel Auxiliary Joining Elements as the Basis for
an Efficient Joining Operation.” In Materials Research Proceedings. Materials
Research Forum LLC, 2024. https://doi.org/10.21741/9781644903131-180.
ieee: 'T. Borgert, A. B. Nordieker, and W. Homberg, “Form-based manufacturing of
aluminium and steel auxiliary joining elements as the basis for an efficient joining
operation,” presented at the ESAFORM 2024, Toulouse, 2024, doi: 10.21741/9781644903131-180.'
mla: Borgert, Thomas, et al. “Form-Based Manufacturing of Aluminium and Steel Auxiliary
Joining Elements as the Basis for an Efficient Joining Operation.” Materials
Research Proceedings, Materials Research Forum LLC, 2024, doi:10.21741/9781644903131-180.
short: 'T. Borgert, A.B. Nordieker, W. Homberg, in: Materials Research Proceedings,
Materials Research Forum LLC, 2024.'
conference:
location: Toulouse
name: ESAFORM 2024
date_created: 2024-06-07T09:38:45Z
date_updated: 2025-09-22T05:45:37Z
department:
- _id: '156'
doi: 10.21741/9781644903131-180
language:
- iso: eng
project:
- _id: '133'
name: TRR 285 - Project Area C
- _id: '147'
name: TRR 285 - Subproject C03
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
status: public
title: Form-based manufacturing of aluminium and steel auxiliary joining elements
as the basis for an efficient joining operation
type: conference
user_id: '88725'
year: '2024'
...