---
_id: '60302'
abstract:
- lang: eng
text: The combination of the mechanical properties of a clinched joint and of the
material surrounding the joint determine the resulting properties of the component
and joint. The cause and effect relationships between the joint and the joint
environment offers the possibility of a specific modification through an adaptation
in the design process. In order to identify these cause and effect relationships
and resulting interactions experimentally, numerous of experiments are required.
In this publication, a concept for the automated manufacturing of head tensile
test and shear tensile test specimens – from cutting to clinching – by using a
punch laser machine is presented. Based on a full-factorial experimental design,
the parameters change of the properties of the joint environment by beading and
change of the punch displacement are addressed. The influence on the properties
of the clinched specimen is evaluated based on the variables Stiffness, force
at the beginning of yielding and maximum force at head tensile loading and shear
tensile loading. In addition, the geometric quality parameters of neck thickness,
interlock and bottom thickness are evaluated. The relationships can be used to
apply uniform loads to joints in joined structures to counteract oversizing.
author:
- first_name: Christian
full_name: Steinfelder, Christian
last_name: Steinfelder
- first_name: Alexander
full_name: Brosius, Alexander
last_name: Brosius
citation:
ama: 'Steinfelder C, Brosius A. Experimental investigation of the cause and effect
relationships between the joint and the component during clinching. In: Materials
Research Proceedings. Vol 25. Materials Research Forum LLC; 2023. doi:10.21741/9781644902417-19'
apa: Steinfelder, C., & Brosius, A. (2023). Experimental investigation of the
cause and effect relationships between the joint and the component during clinching.
Materials Research Proceedings, 25. https://doi.org/10.21741/9781644902417-19
bibtex: '@inproceedings{Steinfelder_Brosius_2023, title={Experimental investigation
of the cause and effect relationships between the joint and the component during
clinching}, volume={25}, DOI={10.21741/9781644902417-19},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Steinfelder, Christian and Brosius, Alexander}, year={2023} }'
chicago: Steinfelder, Christian, and Alexander Brosius. “Experimental Investigation
of the Cause and Effect Relationships between the Joint and the Component during
Clinching.” In Materials Research Proceedings, Vol. 25. Materials Research
Forum LLC, 2023. https://doi.org/10.21741/9781644902417-19.
ieee: 'C. Steinfelder and A. Brosius, “Experimental investigation of the cause and
effect relationships between the joint and the component during clinching,” in
Materials Research Proceedings, Erlangen-Nürnberg, 2023, vol. 25, doi:
10.21741/9781644902417-19.'
mla: Steinfelder, Christian, and Alexander Brosius. “Experimental Investigation
of the Cause and Effect Relationships between the Joint and the Component during
Clinching.” Materials Research Proceedings, vol. 25, Materials Research
Forum LLC, 2023, doi:10.21741/9781644902417-19.
short: 'C. Steinfelder, A. Brosius, in: Materials Research Proceedings, Materials
Research Forum LLC, 2023.'
conference:
end_date: 2023-04-05
location: Erlangen-Nürnberg
name: 20th International Conference on Sheet Metal
start_date: 2023-04-02
date_created: 2025-06-23T08:00:55Z
date_updated: 2025-06-23T08:07:52Z
department:
- _id: '630'
doi: 10.21741/9781644902417-19
intvolume: ' 25'
keyword:
- Sheet Metal
- Joining
- Stiffness
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '140'
name: 'TRR 285 – B01: TRR 285 - Subproject B01'
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
status: public
title: Experimental investigation of the cause and effect relationships between the
joint and the component during clinching
type: conference
user_id: '104464'
volume: 25
year: '2023'
...
---
_id: '34207'
abstract:
- lang: eng
text: AlSi casting alloys combine excellent castability with high strength. Hence,
this group of alloys is often used in the automotive sector. The challenge for
this application is the brittle character of these alloys which leads to cracks
during joint formation when mechanical joining technologies are used. A rise in
ductility can be achieved by a considerable increase in the solidification rate
which results in grain refinement. High solidification rates can be realized in
twin–roll casting (TRC) by water-cooled rolls. Therefore, a hypoeutectic EN AC–AlSi9
(for European Norm - aluminum cast product) is manufactured by the TRC process
and analyzed. Subsequently, joining investigations are performed on castings in
as-cast and heat-treated condition using the self-piercing riveting process considering
the joint formation and the load-bearing capacity. Due to the fine microstructure,
the crack initiation can be avoided during joining, while maintaining the joining
parameters, especially by specimens in heat treatment conditions. Furthermore,
due to the extremely fine microstructure, the load-bearing capacity of the joint
can be significantly increased in terms of the maximum load-bearing force and
the energy absorbed.
article_number: '2200874'
author:
- first_name: Moritz
full_name: Neuser, Moritz
last_name: Neuser
- first_name: Fabian
full_name: Kappe, Fabian
last_name: Kappe
- first_name: Jakob
full_name: Ostermeier, Jakob
last_name: Ostermeier
- first_name: Jan Tobias
full_name: Krüger, Jan Tobias
last_name: Krüger
- first_name: Mathias
full_name: Bobbert, Mathias
last_name: Bobbert
- first_name: Gerson
full_name: Meschut, Gerson
last_name: Meschut
- first_name: Mirko
full_name: Schaper, Mirko
last_name: Schaper
- first_name: Olexandr
full_name: Grydin, Olexandr
last_name: Grydin
citation:
ama: Neuser M, Kappe F, Ostermeier J, et al. Mechanical Properties and Joinability
of AlSi9 Alloy Manufactured by Twin‐Roll Casting. Advanced Engineering Materials.
2022;24(10). doi:10.1002/adem.202200874
apa: Neuser, M., Kappe, F., Ostermeier, J., Krüger, J. T., Bobbert, M., Meschut,
G., Schaper, M., & Grydin, O. (2022). Mechanical Properties and Joinability
of AlSi9 Alloy Manufactured by Twin‐Roll Casting. Advanced Engineering Materials,
24(10), Article 2200874. https://doi.org/10.1002/adem.202200874
bibtex: '@article{Neuser_Kappe_Ostermeier_Krüger_Bobbert_Meschut_Schaper_Grydin_2022,
title={Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll
Casting}, volume={24}, DOI={10.1002/adem.202200874},
number={102200874}, journal={Advanced Engineering Materials}, publisher={Wiley},
author={Neuser, Moritz and Kappe, Fabian and Ostermeier, Jakob and Krüger, Jan
Tobias and Bobbert, Mathias and Meschut, Gerson and Schaper, Mirko and Grydin,
Olexandr}, year={2022} }'
chicago: Neuser, Moritz, Fabian Kappe, Jakob Ostermeier, Jan Tobias Krüger, Mathias
Bobbert, Gerson Meschut, Mirko Schaper, and Olexandr Grydin. “Mechanical Properties
and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll Casting.” Advanced
Engineering Materials 24, no. 10 (2022). https://doi.org/10.1002/adem.202200874.
ieee: 'M. Neuser et al., “Mechanical Properties and Joinability of AlSi9
Alloy Manufactured by Twin‐Roll Casting,” Advanced Engineering Materials,
vol. 24, no. 10, Art. no. 2200874, 2022, doi: 10.1002/adem.202200874.'
mla: Neuser, Moritz, et al. “Mechanical Properties and Joinability of AlSi9 Alloy
Manufactured by Twin‐Roll Casting.” Advanced Engineering Materials, vol.
24, no. 10, 2200874, Wiley, 2022, doi:10.1002/adem.202200874.
short: M. Neuser, F. Kappe, J. Ostermeier, J.T. Krüger, M. Bobbert, G. Meschut,
M. Schaper, O. Grydin, Advanced Engineering Materials 24 (2022).
date_created: 2022-12-05T20:07:55Z
date_updated: 2022-12-05T20:09:50Z
doi: 10.1002/adem.202200874
intvolume: ' 24'
issue: '10'
keyword:
- Condensed Matter Physics
- General Materials Science
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _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: Advanced Engineering Materials
publication_identifier:
issn:
- 1438-1656
- 1527-2648
publication_status: published
publisher: Wiley
status: public
title: Mechanical Properties and Joinability of AlSi9 Alloy Manufactured by Twin‐Roll
Casting
type: journal_article
user_id: '7850'
volume: 24
year: '2022'
...
---
_id: '34211'
abstract:
- lang: eng
text: "Nowadays, clinching is a widely used joining technique, where sheets are
joined by pure deformation to create an interlock without the need for auxiliary
parts. This leads to advantages such as reduced joining time and manufacturing\r\ncosts.
On the other hand, the joint strength solely relies on directed material deformation,
which renders an accurate material modelling essential to reliably predict the
joint forming. The formation of the joint locally involves large plastic strains
and possibly complex non-proportional loading paths, as typical of many metal
forming applications. Consequently, a finite plasticity formulation is utilised
incorporating a Chaboche–Rousselier kinematic hardening law to capture the Bauschinger
effect. Material parameters are identified from tension–compression tests on miniature
spec-\r\nimens for the dual-phase steel HCT590X. The resulting material model
is implemented in LS-Dyna to study the locally diverse loading paths and give
a quantitative statement on the importance of kinematic hardening for clinching.
It turns out that the Bauschinger effect mainly affects the springback of the
sheets and has a smaller effect on the joint forming itself."
author:
- first_name: Johannes
full_name: Friedlein, Johannes
last_name: Friedlein
- first_name: Julia
full_name: Mergheim, Julia
last_name: Mergheim
- first_name: Paul
full_name: Steinmann, Paul
last_name: Steinmann
citation:
ama: 'Friedlein J, Mergheim J, Steinmann P. Influence of Kinematic Hardening on
Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal. In: The Minerals, Metals
& Materials Series. Springer International Publishing; 2022. doi:10.1007/978-3-031-06212-4_31'
apa: Friedlein, J., Mergheim, J., & Steinmann, P. (2022). Influence of Kinematic
Hardening on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal. In The
Minerals, Metals & Materials Series. Springer International Publishing.
https://doi.org/10.1007/978-3-031-06212-4_31
bibtex: '@inbook{Friedlein_Mergheim_Steinmann_2022, place={Cham}, title={Influence
of Kinematic Hardening on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal},
DOI={10.1007/978-3-031-06212-4_31},
booktitle={The Minerals, Metals & Materials Series}, publisher={Springer
International Publishing}, author={Friedlein, Johannes and Mergheim, Julia and
Steinmann, Paul}, year={2022} }'
chicago: 'Friedlein, Johannes, Julia Mergheim, and Paul Steinmann. “Influence of
Kinematic Hardening on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal.”
In The Minerals, Metals & Materials Series. Cham: Springer International
Publishing, 2022. https://doi.org/10.1007/978-3-031-06212-4_31.'
ieee: 'J. Friedlein, J. Mergheim, and P. Steinmann, “Influence of Kinematic Hardening
on Clinch Joining of Dual-Phase Steel HCT590X Sheet Metal,” in The Minerals,
Metals & Materials Series, Cham: Springer International Publishing,
2022.'
mla: Friedlein, Johannes, et al. “Influence of Kinematic Hardening on Clinch Joining
of Dual-Phase Steel HCT590X Sheet Metal.” The Minerals, Metals & Materials
Series, Springer International Publishing, 2022, doi:10.1007/978-3-031-06212-4_31.
short: 'J. Friedlein, J. Mergheim, P. Steinmann, in: The Minerals, Metals &
Materials Series, Springer International Publishing, Cham, 2022.'
date_created: 2022-12-05T21:01:29Z
date_updated: 2022-12-05T21:05:52Z
doi: 10.1007/978-3-031-06212-4_31
keyword:
- Clinching
- Material modelling
- Kinematic hardening
- Parameter identification
- Bauschinger effect
language:
- iso: eng
place: Cham
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '139'
name: 'TRR 285 – A05: TRR 285 - Subproject A05'
publication: The Minerals, Metals & Materials Series
publication_identifier:
isbn:
- '9783031062117'
- '9783031062124'
issn:
- 2367-1181
- 2367-1696
publication_status: published
publisher: Springer International Publishing
status: public
title: Influence of Kinematic Hardening on Clinch Joining of Dual-Phase Steel HCT590X
Sheet Metal
type: book_chapter
user_id: '7850'
year: '2022'
...
---
_id: '34213'
abstract:
- lang: eng
text: In this paper, a study based on experimental and numerical simulations is
performed to analyze fatigue cracks in clinched joints. An experimental investigation
is conducted to determine the failure modes of clinched joints under cyclic loading
at different load amplitudes with single-lap shear tests. In addition, numerical
FEM simulations of clinching process and subsequent shear loading are performed
to support the experimental investigations by analyzing the state of stresses
at the location of failure. An attempt is made to explain the location of crack
initiation in the experiments using evaluation variables such as contact shear
stress and maximum principal stress.
author:
- first_name: L.
full_name: Ewenz, L.
last_name: Ewenz
- first_name: Christian Roman
full_name: Bielak, Christian Roman
id: '34782'
last_name: Bielak
- first_name: Mortaza
full_name: Otroshi, Mortaza
id: '71269'
last_name: Otroshi
orcid: 0000-0002-8652-9209
- 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: M.
full_name: Zimmermann, M.
last_name: Zimmermann
citation:
ama: Ewenz L, Bielak CR, Otroshi M, Bobbert M, Meschut G, Zimmermann M. Numerical
and experimental identification of fatigue crack initiation sites in clinched
joints. Production Engineering. 2022;16(2-3):305-313. doi:10.1007/s11740-022-01124-z
apa: Ewenz, L., Bielak, C. R., Otroshi, M., Bobbert, M., Meschut, G., & Zimmermann,
M. (2022). Numerical and experimental identification of fatigue crack initiation
sites in clinched joints. Production Engineering, 16(2–3), 305–313.
https://doi.org/10.1007/s11740-022-01124-z
bibtex: '@article{Ewenz_Bielak_Otroshi_Bobbert_Meschut_Zimmermann_2022, title={Numerical
and experimental identification of fatigue crack initiation sites in clinched
joints}, volume={16}, DOI={10.1007/s11740-022-01124-z},
number={2–3}, journal={Production Engineering}, publisher={Springer Science and
Business Media LLC}, author={Ewenz, L. and Bielak, Christian Roman and Otroshi,
Mortaza and Bobbert, Mathias and Meschut, Gerson and Zimmermann, M.}, year={2022},
pages={305–313} }'
chicago: 'Ewenz, L., Christian Roman Bielak, Mortaza Otroshi, Mathias Bobbert, Gerson
Meschut, and M. Zimmermann. “Numerical and Experimental Identification of Fatigue
Crack Initiation Sites in Clinched Joints.” Production Engineering 16,
no. 2–3 (2022): 305–13. https://doi.org/10.1007/s11740-022-01124-z.'
ieee: 'L. Ewenz, C. R. Bielak, M. Otroshi, M. Bobbert, G. Meschut, and M. Zimmermann,
“Numerical and experimental identification of fatigue crack initiation sites in
clinched joints,” Production Engineering, vol. 16, no. 2–3, pp. 305–313,
2022, doi: 10.1007/s11740-022-01124-z.'
mla: Ewenz, L., et al. “Numerical and Experimental Identification of Fatigue Crack
Initiation Sites in Clinched Joints.” Production Engineering, vol. 16,
no. 2–3, Springer Science and Business Media LLC, 2022, pp. 305–13, doi:10.1007/s11740-022-01124-z.
short: L. Ewenz, C.R. Bielak, M. Otroshi, M. Bobbert, G. Meschut, M. Zimmermann,
Production Engineering 16 (2022) 305–313.
date_created: 2022-12-05T21:12:10Z
date_updated: 2022-12-05T21:14:34Z
doi: 10.1007/s11740-022-01124-z
intvolume: ' 16'
issue: 2-3
keyword:
- Industrial and Manufacturing Engineering
- Mechanical Engineering
language:
- iso: eng
page: 305-313
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '135'
name: 'TRR 285 – A01: TRR 285 - Subproject A01'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '141'
name: 'TRR 285 – B02: TRR 285 - Subproject B02'
publication: Production Engineering
publication_identifier:
issn:
- 0944-6524
- 1863-7353
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Numerical and experimental identification of fatigue crack initiation sites
in clinched joints
type: journal_article
user_id: '7850'
volume: 16
year: '2022'
...
---
_id: '34212'
abstract:
- lang: eng
text: "Force–displacement measurements and micrograph analyses are commonly used
methods to validate numerical models of clinching processes. However, these methods
often lead to resetting of elastic deformations and crack-\r\nclosing after unloading.
In contrast, the in situ computed tomography (CT) can provide three-dimensional
images of the clinch point under loading conditions. In this paper, the potential
of the in situ investigation of a clinching process as validation method is analyzed.
For the in situ testing, a tailored test set-up featuring a beryllium cylinder
for load-bearing and clinching tools made from ultra-high-strength titanium and
Si3N4 are used. In the experiments, the clinching of two aluminum sheets is interrupted
at specific process steps in order to perform the CT scans. It is shown that in
situ CT visualizes the inner geometry of the joint at high precision and that
this method is suitable to validate numerical models."
author:
- 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
citation:
ama: 'Köhler D, Kupfer R, Troschitz J, Gude M. Clinching in In Situ CT—A Novel Validation
Method for Mechanical Joining Processes. In: The Minerals, Metals & Materials
Series. Springer International Publishing; 2022. doi:10.1007/978-3-031-06212-4_75'
apa: Köhler, D., Kupfer, R., Troschitz, J., & Gude, M. (2022). Clinching in
In Situ CT—A Novel Validation Method for Mechanical Joining Processes. In The
Minerals, Metals & Materials Series. Springer International Publishing.
https://doi.org/10.1007/978-3-031-06212-4_75
bibtex: '@inbook{Köhler_Kupfer_Troschitz_Gude_2022, place={Cham}, title={Clinching
in In Situ CT—A Novel Validation Method for Mechanical Joining Processes}, DOI={10.1007/978-3-031-06212-4_75},
booktitle={The Minerals, Metals & Materials Series}, publisher={Springer International
Publishing}, author={Köhler, Daniel and Kupfer, Robert and Troschitz, Juliane
and Gude, Maik}, year={2022} }'
chicago: 'Köhler, Daniel, Robert Kupfer, Juliane Troschitz, and Maik Gude. “Clinching
in In Situ CT—A Novel Validation Method for Mechanical Joining Processes.” In
The Minerals, Metals & Materials Series. Cham: Springer International
Publishing, 2022. https://doi.org/10.1007/978-3-031-06212-4_75.'
ieee: 'D. Köhler, R. Kupfer, J. Troschitz, and M. Gude, “Clinching in In Situ CT—A
Novel Validation Method for Mechanical Joining Processes,” in The Minerals,
Metals & Materials Series, Cham: Springer International Publishing, 2022.'
mla: Köhler, Daniel, et al. “Clinching in In Situ CT—A Novel Validation Method for
Mechanical Joining Processes.” The Minerals, Metals & Materials Series,
Springer International Publishing, 2022, doi:10.1007/978-3-031-06212-4_75.
short: 'D. Köhler, R. Kupfer, J. Troschitz, M. Gude, in: The Minerals, Metals &
Materials Series, Springer International Publishing, Cham, 2022.'
date_created: 2022-12-05T21:06:21Z
date_updated: 2022-12-05T21:11:47Z
doi: 10.1007/978-3-031-06212-4_75
keyword:
- Clinching
- Non-destructive testing
- Computed tomography
- In situ CT
language:
- iso: eng
place: Cham
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: The Minerals, Metals & Materials Series
publication_identifier:
isbn:
- '9783031062117'
- '9783031062124'
issn:
- 2367-1181
- 2367-1696
publication_status: published
publisher: Springer International Publishing
status: public
title: Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes
type: book_chapter
user_id: '7850'
year: '2022'
...
---
_id: '34219'
abstract:
- lang: eng
text: Resource-saving and sustainable production is becoming increasingly important
regarding social, political and economic aspects, thus making the use of lightweight-construction
technologies a current trend. For this reason, multi-material-systems made of
high-strength steel and aluminium as well as metal and fibre-reinforced plastics
gain in importance. However, different material properties, e.g. stiffness, thermal
expansion coefficients or chemical incompatibilities, are challenging for conventional
joining technologies. Joining by cold formed pin structures has shown to have
high potential for joining multi-material-systems. These pins can be joined either
by direct pin pressing into an unperforated joining partner or by caulking, where
the pins are inserted through a pre-punched joining partner and the pin head is
upset, resulting in a form-fit joint. Usually, cylindrical pins are used for joining.
However, non-rotationally symmetrical pin geometries offer the possibility of
introducing a predetermined breaking point or reinforcing a connection in the
principal force direction. In this work, cylindrical pins as well as non-rotationally
symmetrical pin geometries, such as polygonal and oval pin structures, are cold
extruded from the sheet metal plane of an HCT590X+Z dual phase steel and joined
in the next step with an EN AW-6014 aluminium using direct pin pressing. Since
the formation of an undercut has an crucial influence on the joint strength, the
investigations will be focused on the resulting joint geometry. In addition, the
effect of different pin heights will be examined to analyse the joint formation
at different levels of compression of the pin structures. Finally, the joints
are evaluated regarding their joint strength in tensile shear tests and cross
tension tests. Here the flow resistance of the geometry used as well as the pin
height and thus the strain hardening of the pin base during the extrusion of the
pins play a decisive role for the shear strength.
author:
- first_name: David
full_name: Römisch, David
last_name: Römisch
- first_name: Martin
full_name: Kraus, Martin
last_name: Kraus
- first_name: Marion
full_name: Merklein, Marion
last_name: Merklein
citation:
ama: 'Römisch D, Kraus M, Merklein M. Investigation of the influence of formed,
non-rotationally symmetrical pin geometries and their effect on the joint quality
of steel and aluminium sheets by direct pin pressing. Proceedings of the Institution
of Mechanical Engineers, Part L: Journal of Materials: Design and Applications.
2022;236(6):1187-1202. doi:10.1177/14644207221081408'
apa: 'Römisch, D., Kraus, M., & Merklein, M. (2022). Investigation of the influence
of formed, non-rotationally symmetrical pin geometries and their effect on the
joint quality of steel and aluminium sheets by direct pin pressing. Proceedings
of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design
and Applications, 236(6), 1187–1202. https://doi.org/10.1177/14644207221081408'
bibtex: '@article{Römisch_Kraus_Merklein_2022, title={Investigation of the influence
of formed, non-rotationally symmetrical pin geometries and their effect on the
joint quality of steel and aluminium sheets by direct pin pressing}, volume={236},
DOI={10.1177/14644207221081408},
number={6}, journal={Proceedings of the Institution of Mechanical Engineers, Part
L: Journal of Materials: Design and Applications}, publisher={SAGE Publications},
author={Römisch, David and Kraus, Martin and Merklein, Marion}, year={2022}, pages={1187–1202}
}'
chicago: 'Römisch, David, Martin Kraus, and Marion Merklein. “Investigation of the
Influence of Formed, Non-Rotationally Symmetrical Pin Geometries and Their Effect
on the Joint Quality of Steel and Aluminium Sheets by Direct Pin Pressing.” Proceedings
of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design
and Applications 236, no. 6 (2022): 1187–1202. https://doi.org/10.1177/14644207221081408.'
ieee: 'D. Römisch, M. Kraus, and M. Merklein, “Investigation of the influence of
formed, non-rotationally symmetrical pin geometries and their effect on the joint
quality of steel and aluminium sheets by direct pin pressing,” Proceedings
of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design
and Applications, vol. 236, no. 6, pp. 1187–1202, 2022, doi: 10.1177/14644207221081408.'
mla: 'Römisch, David, et al. “Investigation of the Influence of Formed, Non-Rotationally
Symmetrical Pin Geometries and Their Effect on the Joint Quality of Steel and
Aluminium Sheets by Direct Pin Pressing.” Proceedings of the Institution of
Mechanical Engineers, Part L: Journal of Materials: Design and Applications,
vol. 236, no. 6, SAGE Publications, 2022, pp. 1187–202, doi:10.1177/14644207221081408.'
short: 'D. Römisch, M. Kraus, M. Merklein, Proceedings of the Institution of Mechanical
Engineers, Part L: Journal of Materials: Design and Applications 236 (2022) 1187–1202.'
date_created: 2022-12-05T21:39:38Z
date_updated: 2022-12-05T21:41:09Z
doi: 10.1177/14644207221081408
intvolume: ' 236'
issue: '6'
keyword:
- Mechanical Engineering
- General Materials Science
language:
- iso: eng
page: 1187-1202
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '145'
name: 'TRR 285 – C01: TRR 285 - Subproject C01'
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: Investigation of the influence of formed, non-rotationally symmetrical pin
geometries and their effect on the joint quality of steel and aluminium sheets by
direct pin pressing
type: journal_article
user_id: '7850'
volume: 236
year: '2022'
...
---
_id: '34223'
abstract:
- lang: eng
text: In this study, quasi-unidirectional continuous fiber reinforced thermoplastics
(CFRTs) are joined with metal sheets via cold formed cylindrical, elliptical and
polygonal pin structures which are directly pressed into the CFRT component after
local infrared heating. In comparison to already available studies, the unique
novelty is the use of non-rotational symmetric pin structures for the CFRT/metal
hybrid joining. Thus, a variation in the fiber orientation in the CFRT component
as well as a variation in the non-rotational symmetric pins’ orientation in relation
to the sample orientation is conducted. The created samples are consequently mechanically
tested via single lap shear experiments in a quasi-static state. Finally, the
failure behavior of the single lap shear samples is investigated with the help
of microscopic images and detailed photographs. In the single lap shear tests,
it could be shown that non-rotational symmetric pin structures lead to an increase
in maximum testing forces of up to 74% when compared to cylindrical pins. However,
when normalized to the pin foot print related joint strength, only one polygonal
pin variation showed increased joint strength in comparison to cylindrical pin
structures. The investigation of the failure behavior showed two distinct failure
modes. The first failure mode was failure of the CFRT component due to an exceedance
of the maximum bearing strength of the pin-hole leading to significant damage
in the CFRT component. The second failure mode was pin-deflection due to the applied
testing load and a subsequent pin extraction from the CFRT component resulting
in significantly less visible damage in the CFRT component. Generally, CFRT failure
is more likely with a fiber orientation of 0° in relation to the load direction
while pin extraction typically occurs with a fiber orientation of 90°. It is assumed
that for future investigations, pin structures with an undercutting shape that
creates an interlocking joint could counteract the tendency for pin-extraction
and consequently lead to increased maximum joint strengths.
article_number: '4962'
author:
- first_name: Julian
full_name: Popp, Julian
last_name: Popp
- first_name: David
full_name: Römisch, David
last_name: Römisch
- first_name: Marion
full_name: Merklein, Marion
last_name: Merklein
- first_name: Dietmar
full_name: Drummer, Dietmar
last_name: Drummer
citation:
ama: Popp J, Römisch D, Merklein M, Drummer D. Joining of CFRT/Steel Hybrid Parts
via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures. Applied
Sciences. 2022;12(10). doi:10.3390/app12104962
apa: Popp, J., Römisch, D., Merklein, M., & Drummer, D. (2022). Joining of CFRT/Steel
Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures.
Applied Sciences, 12(10), Article 4962. https://doi.org/10.3390/app12104962
bibtex: '@article{Popp_Römisch_Merklein_Drummer_2022, title={Joining of CFRT/Steel
Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures},
volume={12}, DOI={10.3390/app12104962},
number={104962}, journal={Applied Sciences}, publisher={MDPI AG}, author={Popp,
Julian and Römisch, David and Merklein, Marion and Drummer, Dietmar}, year={2022}
}'
chicago: Popp, Julian, David Römisch, Marion Merklein, and Dietmar Drummer. “Joining
of CFRT/Steel Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric
Pin Structures.” Applied Sciences 12, no. 10 (2022). https://doi.org/10.3390/app12104962.
ieee: 'J. Popp, D. Römisch, M. Merklein, and D. Drummer, “Joining of CFRT/Steel
Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures,”
Applied Sciences, vol. 12, no. 10, Art. no. 4962, 2022, doi: 10.3390/app12104962.'
mla: Popp, Julian, et al. “Joining of CFRT/Steel Hybrid Parts via Direct Pressing
of Cold Formed Non-Rotational Symmetric Pin Structures.” Applied Sciences,
vol. 12, no. 10, 4962, MDPI AG, 2022, doi:10.3390/app12104962.
short: J. Popp, D. Römisch, M. Merklein, D. Drummer, Applied Sciences 12 (2022).
date_created: 2022-12-05T21:48:01Z
date_updated: 2022-12-05T21:49:30Z
doi: 10.3390/app12104962
intvolume: ' 12'
issue: '10'
keyword:
- Fluid Flow and Transfer Processes
- Computer Science Applications
- Process Chemistry and Technology
- General Engineering
- Instrumentation
- General Materials Science
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '145'
name: 'TRR 285 – C01: TRR 285 - Subproject C01'
publication: Applied Sciences
publication_identifier:
issn:
- 2076-3417
publication_status: published
publisher: MDPI AG
status: public
title: Joining of CFRT/Steel Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational
Symmetric Pin Structures
type: journal_article
user_id: '7850'
volume: 12
year: '2022'
...
---
_id: '34225'
abstract:
- lang: eng
text: 'Thermoplastic composites (TPCs) are predestined for use in lightweight structures,
especially for high-volume applications. In many cases, joining is a key factor
for the successful application of TPCs in multi-material systems. Many joining
processes for this material group are based on warm forming the joining zone.
This results in a change of the local material structure characterised by modified
fibre paths, as well as varying fibre contents, which significantly influences
the load-bearing behaviour. During the forming process, many different phenomena
occur simultaneously at different scales. In this paper, the deformation modes
and flow mechanisms of TPCs during forming described in the literature are first
analysed. Based on this, three different joining processes are investigated: embedding
of inserts, moulding of contour joints, and hotclinching. In order to identify
the phenomena occurring in each process and to describe the characteristic resulting
material structure in the joining zones, micrographs as well as computed tomography
(CT) analyses are performed for both individual process stages and final joining
zones.'
article_number: '5454'
author:
- first_name: Juliane
full_name: Troschitz, Juliane
last_name: Troschitz
- first_name: Benjamin
full_name: Gröger, Benjamin
last_name: Gröger
- first_name: Veit
full_name: Würfel, Veit
last_name: Würfel
- first_name: Robert
full_name: Kupfer, Robert
last_name: Kupfer
- first_name: Maik
full_name: Gude, Maik
last_name: Gude
citation:
ama: 'Troschitz J, Gröger B, Würfel V, Kupfer R, Gude M. Joining Processes for Fibre-Reinforced
Thermoplastics: Phenomena and Characterisation. Materials. 2022;15(15).
doi:10.3390/ma15155454'
apa: 'Troschitz, J., Gröger, B., Würfel, V., Kupfer, R., & Gude, M. (2022).
Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation.
Materials, 15(15), Article 5454. https://doi.org/10.3390/ma15155454'
bibtex: '@article{Troschitz_Gröger_Würfel_Kupfer_Gude_2022, title={Joining Processes
for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation}, volume={15},
DOI={10.3390/ma15155454}, number={155454},
journal={Materials}, publisher={MDPI AG}, author={Troschitz, Juliane and Gröger,
Benjamin and Würfel, Veit and Kupfer, Robert and Gude, Maik}, year={2022} }'
chicago: 'Troschitz, Juliane, Benjamin Gröger, Veit Würfel, Robert Kupfer, and Maik
Gude. “Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation.”
Materials 15, no. 15 (2022). https://doi.org/10.3390/ma15155454.'
ieee: 'J. Troschitz, B. Gröger, V. Würfel, R. Kupfer, and M. Gude, “Joining Processes
for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation,” Materials,
vol. 15, no. 15, Art. no. 5454, 2022, doi: 10.3390/ma15155454.'
mla: 'Troschitz, Juliane, et al. “Joining Processes for Fibre-Reinforced Thermoplastics:
Phenomena and Characterisation.” Materials, vol. 15, no. 15, 5454, MDPI
AG, 2022, doi:10.3390/ma15155454.'
short: J. Troschitz, B. Gröger, V. Würfel, R. Kupfer, M. Gude, Materials 15 (2022).
date_created: 2022-12-05T21:51:47Z
date_updated: 2022-12-05T21:54:09Z
doi: 10.3390/ma15155454
intvolume: ' 15'
issue: '15'
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '137'
name: 'TRR 285 – A03: TRR 285 - Subproject A03'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: Materials
publication_identifier:
issn:
- 1996-1944
publication_status: published
publisher: MDPI AG
status: public
title: 'Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation'
type: journal_article
user_id: '7850'
volume: 15
year: '2022'
...
---
_id: '34221'
abstract:
- lang: eng
text: Unter dem Begriff der Auflösung wird für gewöhnlich das kleinste messbare
Merkmal eines Messsystems verstanden. In der dimensionellen Computertomografie
hingegen haben sich in den vergangenen Jahren mehrere Auflösungskonzepte etabliert,
die aufgrund der fehlenden Normung zueinander im Kontrast stehen. In diesem Beitrag
werden die drei häufigsten Konzepte, die Voxelgröße, die Ortsauflösung und die
metrologische Strukturauflösung in Kürze vorgestellt. Anschließend wird eine Abgrenzung
zwischen den Konzepten getroffen und ein Integration der bestehenden Konzepte
in ein gemeinsames Amplituden-Wellenlängen Diagramm diskutiert.
author:
- first_name: Felix
full_name: Binder, Felix
last_name: Binder
- first_name: Tino
full_name: Hausotte, Tino
last_name: Hausotte
citation:
ama: Binder F, Hausotte T. Über die Abgrenzung von Auflösungskonzepten in der industriellen
Computertomografie. tm - Technisches Messen. 2022;89(s1):20-24. doi:10.1515/teme-2022-0065
apa: Binder, F., & Hausotte, T. (2022). Über die Abgrenzung von Auflösungskonzepten
in der industriellen Computertomografie. Tm - Technisches Messen, 89(s1),
20–24. https://doi.org/10.1515/teme-2022-0065
bibtex: '@article{Binder_Hausotte_2022, title={Über die Abgrenzung von Auflösungskonzepten
in der industriellen Computertomografie}, volume={89}, DOI={10.1515/teme-2022-0065},
number={s1}, journal={tm - Technisches Messen}, publisher={Walter de Gruyter GmbH},
author={Binder, Felix and Hausotte, Tino}, year={2022}, pages={20–24} }'
chicago: 'Binder, Felix, and Tino Hausotte. “Über Die Abgrenzung von Auflösungskonzepten
in Der Industriellen Computertomografie.” Tm - Technisches Messen 89, no.
s1 (2022): 20–24. https://doi.org/10.1515/teme-2022-0065.'
ieee: 'F. Binder and T. Hausotte, “Über die Abgrenzung von Auflösungskonzepten in
der industriellen Computertomografie,” tm - Technisches Messen, vol. 89,
no. s1, pp. 20–24, 2022, doi: 10.1515/teme-2022-0065.'
mla: Binder, Felix, and Tino Hausotte. “Über Die Abgrenzung von Auflösungskonzepten
in Der Industriellen Computertomografie.” Tm - Technisches Messen, vol.
89, no. s1, Walter de Gruyter GmbH, 2022, pp. 20–24, doi:10.1515/teme-2022-0065.
short: F. Binder, T. Hausotte, Tm - Technisches Messen 89 (2022) 20–24.
date_created: 2022-12-05T21:43:51Z
date_updated: 2022-12-05T21:44:52Z
doi: 10.1515/teme-2022-0065
intvolume: ' 89'
issue: s1
keyword:
- Electrical and Electronic Engineering
- Instrumentation
language:
- iso: eng
page: 20-24
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '149'
name: 'TRR 285 – C05: TRR 285 - Subproject C05'
publication: tm - Technisches Messen
publication_identifier:
issn:
- 2196-7113
- 0171-8096
publication_status: published
publisher: Walter de Gruyter GmbH
status: public
title: Über die Abgrenzung von Auflösungskonzepten in der industriellen Computertomografie
type: journal_article
user_id: '7850'
volume: 89
year: '2022'
...
---
_id: '34220'
abstract:
- lang: eng
text: Die Erkennbarkeit von Rissen und geometrischen Qualitätskennwerten von Fügeverbindungen
mittels Computertomografie ist von der Interfacestrukturauflösung abhängig, welche
mittels geeigneter Prüfkörper untersucht wird. Die Reduktion von Abbildungsartefakten
im Bereich von Bauteilzwischenräumen und -oberflächen verbessert deren dimensionelle
Erfassbarkeit.
author:
- first_name: Matthias
full_name: Busch, Matthias
last_name: Busch
- first_name: Lorenz
full_name: Butzhammer, Lorenz
last_name: Butzhammer
- first_name: Tino
full_name: Hausotte, Tino
last_name: Hausotte
citation:
ama: Busch M, Butzhammer L, Hausotte T. Herausforderungen bei computertomografischen
Untersuchungen von Fügeverbindungen. tm - Technisches Messen. 2022;89(s1):83-88.
doi:10.1515/teme-2022-0061
apa: Busch, M., Butzhammer, L., & Hausotte, T. (2022). Herausforderungen bei
computertomografischen Untersuchungen von Fügeverbindungen. Tm - Technisches
Messen, 89(s1), 83–88. https://doi.org/10.1515/teme-2022-0061
bibtex: '@article{Busch_Butzhammer_Hausotte_2022, title={Herausforderungen bei computertomografischen
Untersuchungen von Fügeverbindungen}, volume={89}, DOI={10.1515/teme-2022-0061},
number={s1}, journal={tm - Technisches Messen}, publisher={Walter de Gruyter GmbH},
author={Busch, Matthias and Butzhammer, Lorenz and Hausotte, Tino}, year={2022},
pages={83–88} }'
chicago: 'Busch, Matthias, Lorenz Butzhammer, and Tino Hausotte. “Herausforderungen
Bei Computertomografischen Untersuchungen von Fügeverbindungen.” Tm - Technisches
Messen 89, no. s1 (2022): 83–88. https://doi.org/10.1515/teme-2022-0061.'
ieee: 'M. Busch, L. Butzhammer, and T. Hausotte, “Herausforderungen bei computertomografischen
Untersuchungen von Fügeverbindungen,” tm - Technisches Messen, vol. 89,
no. s1, pp. 83–88, 2022, doi: 10.1515/teme-2022-0061.'
mla: Busch, Matthias, et al. “Herausforderungen Bei Computertomografischen Untersuchungen
von Fügeverbindungen.” Tm - Technisches Messen, vol. 89, no. s1, Walter
de Gruyter GmbH, 2022, pp. 83–88, doi:10.1515/teme-2022-0061.
short: M. Busch, L. Butzhammer, T. Hausotte, Tm - Technisches Messen 89 (2022) 83–88.
date_created: 2022-12-05T21:42:07Z
date_updated: 2022-12-05T21:43:30Z
doi: 10.1515/teme-2022-0061
intvolume: ' 89'
issue: s1
keyword:
- Electrical and Electronic Engineering
- Instrumentation
language:
- iso: eng
page: 83-88
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '149'
name: 'TRR 285 – C05: TRR 285 - Subproject C05'
publication: tm - Technisches Messen
publication_identifier:
issn:
- 2196-7113
- 0171-8096
publication_status: published
publisher: Walter de Gruyter GmbH
status: public
title: Herausforderungen bei computertomografischen Untersuchungen von Fügeverbindungen
type: journal_article
user_id: '7850'
volume: 89
year: '2022'
...
---
_id: '34415'
abstract:
- lang: eng
text: Challenges in the development of resource-efficient lightweight designs, such
as emission and cost targets in production, lead to an increasing demand for environmentally
friendly and fast joining processes. Therefore, cold-forming mechanical joining
techniques provide an energy-efficient alternative in comparison to established
processes, such as spot welding. However, to ensure a sufficient reliability of
the product design, not only the selection of an appropriate manufacturing and
joining method, but also the suitable dimensioning and validation of the entire
joining process is a crucial step. In this context, thermal processes offer a
large number of design principles while mechanical joining methods mainly require
extensive experimental tests and the inclusion of expert knowledge. Although few
contributions already investigated the data-based analysis of mechanical joints,
a system for the requirement- and manufacturing-oriented dimensioning of joining
components, such as different profiles and blanks, in combination with the estimation
of joint properties is not available yet. Motivated by this lack, this contribution
introduces an engineering workbench for the support of design engineers in the
early development phases of the knowledge and data-based design of mechanical
joining connections using clinching as an example. In this regard, the approach
is demonstrated involving a similar material and sheet thickness combination with
static loads.
author:
- first_name: Christoph
full_name: Zirngibl, Christoph
last_name: Zirngibl
- first_name: Christopher
full_name: Sauer, Christopher
last_name: Sauer
- first_name: Benjamin
full_name: Schleich, Benjamin
last_name: Schleich
- first_name: Sandro
full_name: Wartzack, Sandro
last_name: Wartzack
citation:
ama: 'Zirngibl C, Sauer C, Schleich B, Wartzack S. Knowledge and Data-Based Design
and Dimensioning of Mechanical Joining Connections. In: Volume 2: 42nd Computers
and Information in Engineering Conference (CIE). American Society of Mechanical
Engineers; 2022. doi:10.1115/detc2022-89172'
apa: 'Zirngibl, C., Sauer, C., Schleich, B., & Wartzack, S. (2022). Knowledge
and Data-Based Design and Dimensioning of Mechanical Joining Connections. Volume
2: 42nd Computers and Information in Engineering Conference (CIE). https://doi.org/10.1115/detc2022-89172'
bibtex: '@inproceedings{Zirngibl_Sauer_Schleich_Wartzack_2022, title={Knowledge
and Data-Based Design and Dimensioning of Mechanical Joining Connections}, DOI={10.1115/detc2022-89172}, booktitle={Volume
2: 42nd Computers and Information in Engineering Conference (CIE)}, publisher={American
Society of Mechanical Engineers}, author={Zirngibl, Christoph and Sauer, Christopher
and Schleich, Benjamin and Wartzack, Sandro}, year={2022} }'
chicago: 'Zirngibl, Christoph, Christopher Sauer, Benjamin Schleich, and Sandro
Wartzack. “Knowledge and Data-Based Design and Dimensioning of Mechanical Joining
Connections.” In Volume 2: 42nd Computers and Information in Engineering Conference
(CIE). American Society of Mechanical Engineers, 2022. https://doi.org/10.1115/detc2022-89172.'
ieee: 'C. Zirngibl, C. Sauer, B. Schleich, and S. Wartzack, “Knowledge and Data-Based
Design and Dimensioning of Mechanical Joining Connections,” 2022, doi: 10.1115/detc2022-89172.'
mla: 'Zirngibl, Christoph, et al. “Knowledge and Data-Based Design and Dimensioning
of Mechanical Joining Connections.” Volume 2: 42nd Computers and Information
in Engineering Conference (CIE), American Society of Mechanical Engineers,
2022, doi:10.1115/detc2022-89172.'
short: 'C. Zirngibl, C. Sauer, B. Schleich, S. Wartzack, in: Volume 2: 42nd Computers
and Information in Engineering Conference (CIE), American Society of Mechanical
Engineers, 2022.'
date_created: 2022-12-14T12:27:27Z
date_updated: 2022-12-14T12:29:33Z
doi: 10.1115/detc2022-89172
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '144'
name: 'TRR 285 – B05: TRR 285 - Subproject B05'
publication: 'Volume 2: 42nd Computers and Information in Engineering Conference (CIE)'
publication_status: published
publisher: American Society of Mechanical Engineers
status: public
title: Knowledge and Data-Based Design and Dimensioning of Mechanical Joining Connections
type: conference
user_id: '7850'
year: '2022'
...
---
_id: '34417'
abstract:
- lang: eng
text: Given strict emission targets and legal requirements, especially in the automotive
industry, environmentally friendly and simultaneously versatile applicable production
technologies are gaining importance. In this regard, the use of mechanical joining
processes, such as clinching, enable assembly sheet metals to achieve strength
properties similar to those of established thermal joining technologies. However,
to guarantee a high reliability of the generated joint connection, the selection
of a best-fitting joining technology as well as the meaningful description of
individual joint properties is essential. In the context of clinching, few contributions
have to date investigated the metamodel-based estimation and optimization of joint
characteristics, such as neck or interlock thickness, by applying machine learning
and genetic algorithms. Therefore, several regression models have been trained
on varying databases and amounts of input parameters. However, if product engineers
can only provide limited data for a new joining task, such as incomplete information
on applied joining tool dimensions, previously trained metamodels often reach
their limits. This often results in a significant loss of prediction quality and
leads to increasing uncertainties and inaccuracies within the metamodel-based
design of a clinch joint connection. Motivated by this, the presented contribution
investigates different machine learning algorithms regarding their ability to
achieve a satisfying estimation accuracy on limited input data applying a statistically
based feature selection method. Through this, it is possible to identify which
regression models are suitable to predict clinch joint characteristics considering
only a minimum set of required input features. Thus, in addition to the opportunity
to decrease the training effort as well as the model complexity, the subsequent
formulation of design equations can pave the way to a more versatile application
and reuse of pretrained metamodels on varying tool configurations for a given
clinch joining task.
author:
- first_name: Christoph
full_name: Zirngibl, Christoph
last_name: Zirngibl
- first_name: Benjamin
full_name: Schleich, Benjamin
last_name: Schleich
- first_name: Sandro
full_name: Wartzack, Sandro
last_name: Wartzack
citation:
ama: Zirngibl C, Schleich B, Wartzack S. Estimation of Clinch Joint Characteristics
Based on Limited Input Data Using Pre-Trained Metamodels. AI. 2022;3(4):990-1006.
doi:10.3390/ai3040059
apa: Zirngibl, C., Schleich, B., & Wartzack, S. (2022). Estimation of Clinch
Joint Characteristics Based on Limited Input Data Using Pre-Trained Metamodels.
AI, 3(4), 990–1006. https://doi.org/10.3390/ai3040059
bibtex: '@article{Zirngibl_Schleich_Wartzack_2022, title={Estimation of Clinch Joint
Characteristics Based on Limited Input Data Using Pre-Trained Metamodels}, volume={3},
DOI={10.3390/ai3040059}, number={4},
journal={AI}, publisher={MDPI AG}, author={Zirngibl, Christoph and Schleich, Benjamin
and Wartzack, Sandro}, year={2022}, pages={990–1006} }'
chicago: 'Zirngibl, Christoph, Benjamin Schleich, and Sandro Wartzack. “Estimation
of Clinch Joint Characteristics Based on Limited Input Data Using Pre-Trained
Metamodels.” AI 3, no. 4 (2022): 990–1006. https://doi.org/10.3390/ai3040059.'
ieee: 'C. Zirngibl, B. Schleich, and S. Wartzack, “Estimation of Clinch Joint Characteristics
Based on Limited Input Data Using Pre-Trained Metamodels,” AI, vol. 3,
no. 4, pp. 990–1006, 2022, doi: 10.3390/ai3040059.'
mla: Zirngibl, Christoph, et al. “Estimation of Clinch Joint Characteristics Based
on Limited Input Data Using Pre-Trained Metamodels.” AI, vol. 3, no. 4,
MDPI AG, 2022, pp. 990–1006, doi:10.3390/ai3040059.
short: C. Zirngibl, B. Schleich, S. Wartzack, AI 3 (2022) 990–1006.
date_created: 2022-12-14T12:32:29Z
date_updated: 2022-12-14T13:43:53Z
doi: 10.3390/ai3040059
intvolume: ' 3'
issue: '4'
keyword:
- Industrial and Manufacturing Engineering
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.mdpi.com/2673-2688/3/4/59
oa: '1'
page: 990-1006
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '144'
name: 'TRR 285 – B05: TRR 285 - Subproject B05'
publication: AI
publication_identifier:
issn:
- 2673-2688
publication_status: published
publisher: MDPI AG
status: public
title: Estimation of Clinch Joint Characteristics Based on Limited Input Data Using
Pre-Trained Metamodels
type: journal_article
user_id: '7850'
volume: 3
year: '2022'
...
---
_id: '30626'
abstract:
- lang: eng
text: Clinching is a very cost-efficient method for joining two or more sheets made
of identical or different materials. However, the current evaluation methods cannot
confirm the critical geometrical features of joints such as neck thickness, undercut,
and bottom thickness. Furthermore, the effects caused by joining process such
as elastic deformation and crack-closure are significant for the joining quality,
but often earn insufficient attention. Therefore, computed tomography (CT) and
Transient Dynamic Analysis (TDA) as an ultrasonic testing and evaluation procedure
are combined to overcome the obstacles mentioned above. In order to have a well-defined
and reproducible typical geometrical error in clinching, specimens with a pre-specified
lateral offset of the punch with 0.1 mm, 0.2 mm are as well as with no lateral
offset are investigated using CT. The specimens are treated with conductive copper
varnish in varying intensities to support the two sheets' distinguishability in
the CT measurement. The subsequently extracted surfaces from CT-scan data are
used to create three-dimensional models for a numerical Transient Dynamic Analysis.
Hereby, a harmonic force is applied to one sheet and the transferred energy is
determined at the opposite side of the clinch point on the other sheet. The transmitted
energy can be used as a quantitative measure for the joining quality. This setup
is simulated by means of Finite-Element-Method and the specimens are investigated
experimentally using a piezo actuator and a piezo sensor. The novelty of the results
presented here is the completely non-destructive investigation of joint specimen
by CT of similar materials with a contrast given foil in between the sheets and
the subsequent TDA, which can easily detect difference between the specimens by
evaluation of the energy dissipation of the joints.
author:
- first_name: D.
full_name: Köhler, D.
last_name: Köhler
- first_name: B.
full_name: Sadeghian, B.
last_name: Sadeghian
- 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
- first_name: A.
full_name: Brosius, A.
last_name: Brosius
citation:
ama: Köhler D, Sadeghian B, Troschitz J, Kupfer R, Gude M, Brosius A. Characterisation
of lateral offsets in clinch points with computed tomography and transient dynamic
analysis. Journal of Advanced Joining Processes. 2022;5:100089. doi:10.1016/j.jajp.2021.100089
apa: Köhler, D., Sadeghian, B., Troschitz, J., Kupfer, R., Gude, M., & Brosius,
A. (2022). Characterisation of lateral offsets in clinch points with computed
tomography and transient dynamic analysis. Journal of Advanced Joining Processes,
5, 100089. https://doi.org/10.1016/j.jajp.2021.100089
bibtex: '@article{Köhler_Sadeghian_Troschitz_Kupfer_Gude_Brosius_2022, title={Characterisation
of lateral offsets in clinch points with computed tomography and transient dynamic
analysis}, volume={5}, DOI={10.1016/j.jajp.2021.100089},
journal={Journal of Advanced Joining Processes}, author={Köhler, D. and Sadeghian,
B. and Troschitz, J. and Kupfer, R. and Gude, M. and Brosius, A.}, year={2022},
pages={100089} }'
chicago: 'Köhler, D., B. Sadeghian, J. Troschitz, R. Kupfer, M. Gude, and A. Brosius.
“Characterisation of Lateral Offsets in Clinch Points with Computed Tomography
and Transient Dynamic Analysis.” Journal of Advanced Joining Processes
5 (2022): 100089. https://doi.org/10.1016/j.jajp.2021.100089.'
ieee: 'D. Köhler, B. Sadeghian, J. Troschitz, R. Kupfer, M. Gude, and A. Brosius,
“Characterisation of lateral offsets in clinch points with computed tomography
and transient dynamic analysis,” Journal of Advanced Joining Processes,
vol. 5, p. 100089, 2022, doi: 10.1016/j.jajp.2021.100089.'
mla: Köhler, D., et al. “Characterisation of Lateral Offsets in Clinch Points with
Computed Tomography and Transient Dynamic Analysis.” Journal of Advanced Joining
Processes, vol. 5, 2022, p. 100089, doi:10.1016/j.jajp.2021.100089.
short: D. Köhler, B. Sadeghian, J. Troschitz, R. Kupfer, M. Gude, A. Brosius, Journal
of Advanced Joining Processes 5 (2022) 100089.
date_created: 2022-03-28T10:27:42Z
date_updated: 2023-01-02T10:54:44Z
department:
- _id: '630'
doi: 10.1016/j.jajp.2021.100089
intvolume: ' 5'
language:
- iso: eng
page: '100089'
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: Journal of Advanced Joining Processes
status: public
title: Characterisation of lateral offsets in clinch points with computed tomography
and transient dynamic analysis
type: journal_article
user_id: '14931'
volume: 5
year: '2022'
...
---
_id: '30625'
abstract:
- lang: eng
text: Continuous fiber reinforced thermoplastics (CFRT)/steel hybrid parts offer
promising properties and possibilities, which can exceed the capabilities of both
individual materials. In this case, the joining operation presents the main challenge.
This paper studies the direct pin pressing where metallic pins with undercutting
geometries, protruding from the metal component, are inserted into a locally infrared
heated CFRT component. The aim is to investigate the joining process with a focus
on the filling of the undercut features with matrix and fibers to create a primarily
form-fitting joint. For good mechanical properties of the joint, it is crucial,
that the undercutting features are filled and do not lead to significant deconsolidations.
The pin structures are manufactured from 42CrMo4 steel on a cnc-lathe and are
joined via welding with HCT600+Zn sheet metal. The CFRT samples are manufactured
from polypropylene and approximately 45% vol. unidirectional glass fibers. In
the scope of this study, different pin geometries are joined with varying process
settings and micro sections of the joints are investigated via reflected light
microscopy. It could be shown that the undercuts can be completely filled with
matrix and fiber material using the described process route. Based on the optical
investigations a suitable setting of joining parameters is defined and lap shear
as well as cross head samples are manufactured and experimentally tested. It could
be seen that independently from the pin geometry the lap shear strength was primarily
limited due to shear failure of the pin structures and it is assumed that the
base diameter and pin strength predominantly determine the joint strength. Cross
head samples failed due to pin extraction. Here, a significant increase of the
joint strength with undercutting features could be shown in comparison to cylindrical
reference pins.
author:
- first_name: J.
full_name: Popp, J.
last_name: Popp
- first_name: D.
full_name: Drummer, D.
last_name: Drummer
citation:
ama: Popp J, Drummer D. Joining of continuous fiber reinforced thermoplastic/steel
hybrid parts via undercutting pin structures and infrared heating. Journal
of Advanced Joining Processes. 2022;5:100084. doi:10.1016/j.jajp.2021.100084
apa: Popp, J., & Drummer, D. (2022). Joining of continuous fiber reinforced
thermoplastic/steel hybrid parts via undercutting pin structures and infrared
heating. Journal of Advanced Joining Processes, 5, 100084. https://doi.org/10.1016/j.jajp.2021.100084
bibtex: '@article{Popp_Drummer_2022, title={Joining of continuous fiber reinforced
thermoplastic/steel hybrid parts via undercutting pin structures and infrared
heating}, volume={5}, DOI={10.1016/j.jajp.2021.100084},
journal={Journal of Advanced Joining Processes}, author={Popp, J. and Drummer,
D.}, year={2022}, pages={100084} }'
chicago: 'Popp, J., and D. Drummer. “Joining of Continuous Fiber Reinforced Thermoplastic/Steel
Hybrid Parts via Undercutting Pin Structures and Infrared Heating.” Journal
of Advanced Joining Processes 5 (2022): 100084. https://doi.org/10.1016/j.jajp.2021.100084.'
ieee: 'J. Popp and D. Drummer, “Joining of continuous fiber reinforced thermoplastic/steel
hybrid parts via undercutting pin structures and infrared heating,” Journal
of Advanced Joining Processes, vol. 5, p. 100084, 2022, doi: 10.1016/j.jajp.2021.100084.'
mla: Popp, J., and D. Drummer. “Joining of Continuous Fiber Reinforced Thermoplastic/Steel
Hybrid Parts via Undercutting Pin Structures and Infrared Heating.” Journal
of Advanced Joining Processes, vol. 5, 2022, p. 100084, doi:10.1016/j.jajp.2021.100084.
short: J. Popp, D. Drummer, Journal of Advanced Joining Processes 5 (2022) 100084.
date_created: 2022-03-28T10:25:57Z
date_updated: 2023-01-02T10:55:23Z
department:
- _id: '630'
doi: 10.1016/j.jajp.2021.100084
intvolume: ' 5'
language:
- iso: eng
page: '100084'
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '145'
name: 'TRR 285 – C01: TRR 285 - Subproject C01'
publication: Journal of Advanced Joining Processes
status: public
title: Joining of continuous fiber reinforced thermoplastic/steel hybrid parts via
undercutting pin structures and infrared heating
type: journal_article
user_id: '14931'
volume: 5
year: '2022'
...
---
_id: '30624'
abstract:
- lang: eng
text: In addition to brazing and welding processes, mechanical joining processes
such as clinching are increasingly being used. Clinch joints offer an advantage
over metallurgical joining processes by giving the possibility of joining different
material combinations without typical drawbacks. Thereby clinching offers an enormous
advantage for lightweight construction. An additional benefit is a great variability
in the geometric shapes of the toolsets, which ensure optimum adaptation of the
clinching process on variations of the joining elements such as e.g. the sheet
thickness. However, the vast variability is also one of the major challenges regarding
the prediction of the joint reliability. In the work presented, the effect of
different toolset geometries was investigated with a particular focus on the interaction
between geometrical features and deformation-induced microstructural changes.
Light optical and electron microscopy techniques, as well as micro-hardness measurements,
were performed. The results were evaluated and discussed concerning the material's
deformation behavior, the change in geometrical shape and the microstructural
evolution due to the different tool geometries. The findings point out the main
influence factors regarding the mechanical properties in general and the fatigue
behavior in particular.
author:
- first_name: L.
full_name: Ewenz, L.
last_name: Ewenz
- first_name: M.
full_name: Kuczyk, M.
last_name: Kuczyk
- first_name: M.
full_name: Zimmermann, M.
last_name: Zimmermann
citation:
ama: Ewenz L, Kuczyk M, Zimmermann M. Effect of the tool geometry on microstructure
and geometrical features of clinched aluminum. Journal of Advanced Joining
Processes. 2022;5. doi:10.1016/j.jajp.2021.100091
apa: Ewenz, L., Kuczyk, M., & Zimmermann, M. (2022). Effect of the tool geometry
on microstructure and geometrical features of clinched aluminum. Journal of
Advanced Joining Processes, 5. https://doi.org/10.1016/j.jajp.2021.100091
bibtex: '@article{Ewenz_Kuczyk_Zimmermann_2022, title={Effect of the tool geometry
on microstructure and geometrical features of clinched aluminum}, volume={5},
DOI={10.1016/j.jajp.2021.100091},
journal={Journal of Advanced Joining Processes}, author={Ewenz, L. and Kuczyk,
M. and Zimmermann, M.}, year={2022} }'
chicago: Ewenz, L., M. Kuczyk, and M. Zimmermann. “Effect of the Tool Geometry on
Microstructure and Geometrical Features of Clinched Aluminum.” Journal of Advanced
Joining Processes 5 (2022). https://doi.org/10.1016/j.jajp.2021.100091.
ieee: 'L. Ewenz, M. Kuczyk, and M. Zimmermann, “Effect of the tool geometry on microstructure
and geometrical features of clinched aluminum,” Journal of Advanced Joining
Processes, vol. 5, 2022, doi: 10.1016/j.jajp.2021.100091.'
mla: Ewenz, L., et al. “Effect of the Tool Geometry on Microstructure and Geometrical
Features of Clinched Aluminum.” Journal of Advanced Joining Processes,
vol. 5, 2022, doi:10.1016/j.jajp.2021.100091.
short: L. Ewenz, M. Kuczyk, M. Zimmermann, Journal of Advanced Joining Processes
5 (2022).
date_created: 2022-03-28T10:24:28Z
date_updated: 2023-01-02T10:54:16Z
department:
- _id: '630'
doi: 10.1016/j.jajp.2021.100091
intvolume: ' 5'
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '141'
name: 'TRR 285 – B02: TRR 285 - Subproject B02'
publication: Journal of Advanced Joining Processes
status: public
title: Effect of the tool geometry on microstructure and geometrical features of clinched
aluminum
type: journal_article
user_id: '14931'
volume: 5
year: '2022'
...
---
_id: '30622'
author:
- first_name: B.
full_name: Gröger, B.
last_name: Gröger
- first_name: V.
full_name: Würfel, V.
last_name: Würfel
- first_name: A.
full_name: Hornig, A.
last_name: Hornig
- first_name: M.
full_name: Gude, M.
last_name: Gude
citation:
ama: Gröger B, Würfel V, Hornig A, Gude M. Forming process induced material structure
of fibre-reinforced thermoplastics - Experimental and numerical investigation
of a bladder-assisted moulding process. Journal of Advanced Joining Processes.
2022;5. doi:10.1016/j.jajp.2022.100100
apa: Gröger, B., Würfel, V., Hornig, A., & Gude, M. (2022). Forming process
induced material structure of fibre-reinforced thermoplastics - Experimental and
numerical investigation of a bladder-assisted moulding process. Journal of
Advanced Joining Processes, 5. https://doi.org/10.1016/j.jajp.2022.100100
bibtex: '@article{Gröger_Würfel_Hornig_Gude_2022, title={Forming process induced
material structure of fibre-reinforced thermoplastics - Experimental and numerical
investigation of a bladder-assisted moulding process}, volume={5}, DOI={10.1016/j.jajp.2022.100100},
journal={Journal of Advanced Joining Processes}, author={Gröger, B. and Würfel,
V. and Hornig, A. and Gude, M.}, year={2022} }'
chicago: Gröger, B., V. Würfel, A. Hornig, and M. Gude. “Forming Process Induced
Material Structure of Fibre-Reinforced Thermoplastics - Experimental and Numerical
Investigation of a Bladder-Assisted Moulding Process.” Journal of Advanced
Joining Processes 5 (2022). https://doi.org/10.1016/j.jajp.2022.100100.
ieee: 'B. Gröger, V. Würfel, A. Hornig, and M. Gude, “Forming process induced material
structure of fibre-reinforced thermoplastics - Experimental and numerical investigation
of a bladder-assisted moulding process,” Journal of Advanced Joining Processes,
vol. 5, 2022, doi: 10.1016/j.jajp.2022.100100.'
mla: Gröger, B., et al. “Forming Process Induced Material Structure of Fibre-Reinforced
Thermoplastics - Experimental and Numerical Investigation of a Bladder-Assisted
Moulding Process.” Journal of Advanced Joining Processes, vol. 5, 2022,
doi:10.1016/j.jajp.2022.100100.
short: B. Gröger, V. Würfel, A. Hornig, M. Gude, Journal of Advanced Joining Processes
5 (2022).
date_created: 2022-03-28T08:23:50Z
date_updated: 2023-01-02T10:53:51Z
department:
- _id: '630'
doi: 10.1016/j.jajp.2022.100100
intvolume: ' 5'
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '137'
name: 'TRR 285 – A03: TRR 285 - Subproject A03'
publication: Journal of Advanced Joining Processes
status: public
title: Forming process induced material structure of fibre-reinforced thermoplastics
- Experimental and numerical investigation of a bladder-assisted moulding process
type: journal_article
user_id: '14931'
volume: 5
year: '2022'
...
---
_id: '30717'
abstract:
- lang: eng
text: To achieve the climate objectives, various measures are taken to increase
the efficiency of raw materials and energies used. A sector with a large proportion
of the global consumption of resources is the mobility sector. To increase the
efficiency in this field, large efforts are made to reduce the weight of moving
masses. One approach is the use of multi-material systems, which utilises different
materials and their specific properties depending on the local requirements. Multi-material
systems consist often of materials which differ in strength and density, for example,
high-strength steels, aluminium alloys or polymers. Additionally, such a system
can utilise different geometries of the components to be joined, characterised
for example by varying sheet thicknesses. A central challenge of producing these
systems is the joining of the individual components. This requires robust joining
processes capable of covering the entire spectrum of possible variants and is
feasible for different physical properties of the materials. Since conventional
joining processes are rather rigid and have difficulty reacting to changing process
and disturbance variables, new joining processes are necessary. With the objective
of being able to react versatile to varying parameters, a process combination
consisting of a semi-tubular self-piercing riveting process and orbital forming
process with adjustable tumbling kinematic is introduced. Due to the process combination
of tumbling and self-piercing riveting, mutual influences of the two process components
are analysed in regard to material flow and process forces. Further, the investigations
show the influence of a varying tumbling angle on the joining process itself and
how the characteristic properties undercut, rivet head end position and residual
sheet thickness of the joint are affected. The material used for the joining partners
is an aluminium alloy EN AW-6014 typical for multi-material systems in the automotive
industry and the rivets are from type Rivset C produced by the Böllhoff company.
author:
- first_name: S.
full_name: Wituschek, S.
last_name: Wituschek
- first_name: M.
full_name: Lechner, M.
last_name: Lechner
citation:
ama: Wituschek S, Lechner M. Investigation of the influence of the tumbling angle
on a tumbling self-piercing riveting process. Production Engineering. Published
online 2022. doi:10.1177/14644207221080068
apa: Wituschek, S., & Lechner, M. (2022). Investigation of the influence of
the tumbling angle on a tumbling self-piercing riveting process. Production
Engineering. https://doi.org/10.1177/14644207221080068
bibtex: '@article{Wituschek_Lechner_2022, title={Investigation of the influence
of the tumbling angle on a tumbling self-piercing riveting process}, DOI={10.1177/14644207221080068},
journal={Production Engineering}, author={Wituschek, S. and Lechner, M.}, year={2022}
}'
chicago: Wituschek, S., and M. Lechner. “Investigation of the Influence of the Tumbling
Angle on a Tumbling Self-Piercing Riveting Process.” Production Engineering,
2022. https://doi.org/10.1177/14644207221080068.
ieee: 'S. Wituschek and M. Lechner, “Investigation of the influence of the tumbling
angle on a tumbling self-piercing riveting process,” Production Engineering,
2022, doi: 10.1177/14644207221080068.'
mla: Wituschek, S., and M. Lechner. “Investigation of the Influence of the Tumbling
Angle on a Tumbling Self-Piercing Riveting Process.” Production Engineering,
2022, doi:10.1177/14644207221080068.
short: S. Wituschek, M. Lechner, Production Engineering (2022).
date_created: 2022-03-29T10:33:15Z
date_updated: 2023-01-02T10:56:48Z
department:
- _id: '630'
doi: 10.1177/14644207221080068
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '146'
name: 'TRR 285 – C02: TRR 285 - Subproject C02'
publication: Production Engineering
status: public
title: Investigation of the influence of the tumbling angle on a tumbling self-piercing
riveting process
type: journal_article
user_id: '14931'
year: '2022'
...
---
_id: '30629'
abstract:
- lang: eng
text: Clinching is a joining process that is becoming more and more important in
industry due to the increasing use of multi-material designs. Despite the already
widespread use of the process, there is still a need for research to understand
the mechanisms and design of clinched joints. In contrast to the tool parameters,
process and material disturbances have not yet been investigated to a relatively
large extent. However, these also have a great influence on the properties and
applicability of clinching. The effect of process disturbances on the clinched
joint are investigated with numerical and experimental methods. The investigated
process variations are the history of the sheets using the pre-hardening of the
material, different sheet thicknesses, sheet arrangements and punch strokes. For
the consideration of the material history, a specimen geometry for pre-stretching
specimens in uniaxial tension is used, from which the pre-stretched secondary
specimens are taken. A finite element model is set up for the numerical investigations.
Suitable clinching tools are selected. With the simulation, selected process influences
can be examined. The effort of the numerical investigations is considerably reduced
with the help of a statistical experimental design according to Taguchi. To confirm
the simulation results, experimental investigations of the clinch point geometry
by using micrographs and the shear strength of the clinched joint are performed.
The analysis of the influence of difference disturbance factors on the clinching
process demonstrate the importance of the holistic view of the clinching process.
author:
- first_name: C.
full_name: Steinfelder, C.
last_name: Steinfelder
- first_name: J.
full_name: Acksteiner, J.
last_name: Acksteiner
- first_name: C.
full_name: Guilleaume, C.
last_name: Guilleaume
- first_name: A.
full_name: Brosius, A.
last_name: Brosius
citation:
ama: Steinfelder C, Acksteiner J, Guilleaume C, Brosius A. Analysis of the interactions
between joint and component properties during clinching. Production Engineering.
Published online 2022. doi:10.1007/s11740-021-01102-x
apa: Steinfelder, C., Acksteiner, J., Guilleaume, C., & Brosius, A. (2022).
Analysis of the interactions between joint and component properties during clinching.
Production Engineering. https://doi.org/10.1007/s11740-021-01102-x
bibtex: '@article{Steinfelder_Acksteiner_Guilleaume_Brosius_2022, title={Analysis
of the interactions between joint and component properties during clinching},
DOI={10.1007/s11740-021-01102-x},
journal={Production Engineering}, author={Steinfelder, C. and Acksteiner, J. and
Guilleaume, C. and Brosius, A.}, year={2022} }'
chicago: Steinfelder, C., J. Acksteiner, C. Guilleaume, and A. Brosius. “Analysis
of the Interactions between Joint and Component Properties during Clinching.”
Production Engineering, 2022. https://doi.org/10.1007/s11740-021-01102-x.
ieee: 'C. Steinfelder, J. Acksteiner, C. Guilleaume, and A. Brosius, “Analysis of
the interactions between joint and component properties during clinching,” Production
Engineering, 2022, doi: 10.1007/s11740-021-01102-x.'
mla: Steinfelder, C., et al. “Analysis of the Interactions between Joint and Component
Properties during Clinching.” Production Engineering, 2022, doi:10.1007/s11740-021-01102-x.
short: C. Steinfelder, J. Acksteiner, C. Guilleaume, A. Brosius, Production Engineering
(2022).
date_created: 2022-03-28T10:32:25Z
date_updated: 2023-01-02T10:55:50Z
department:
- _id: '630'
doi: 10.1007/s11740-021-01102-x
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '140'
name: 'TRR 285 – B01: TRR 285 - Subproject B01'
publication: Production Engineering
status: public
title: Analysis of the interactions between joint and component properties during
clinching
type: journal_article
user_id: '14931'
year: '2022'
...
---
_id: '30640'
abstract:
- lang: eng
text: Surface determination is an essential step of the measurement process in industrial
X-ray computed tomography (XCT). The starting point of the surface determination
process step is a single grey value threshold within a voxel volume in conventional
surface determination methods. However, this value is not always found in the
reconstructed volume in the local environment of the surface of the measurement
object due to various artefacts, so that none or incorrect surfaces are determined.
In order to find surfaces independently of a single grey value, a three-dimensional
approach of the initial contour determination based on a Prewitt edge detection
algorithm is presented in this work. This method is applied to different test
specimens and specimen compositions which, due to their material or material constellation,
their geometric properties with regard to surfaces and interfaces as well as their
calibrated size and length dimensions, embody relevant properties in the examination
of joining connections. It is shown that by using the surface determination method
in the measurement process, both a higher metrological structure resolution and
interface structure resolution can be achieved. Surface artefacts can be reduced
by the application and it is also an approach to improved surface finding for
the multi-material components that are challenging for XCT.
author:
- first_name: M.
full_name: Busch, M.
last_name: Busch
- first_name: T.
full_name: Hausotte, T.
last_name: Hausotte
citation:
ama: Busch M, Hausotte T. Application of an edge detection algorithm for surface
determination in industrial X-ray computed tomography. Production Engineering.
Published online 2022. doi:10.1007/s11740-021-01100-z
apa: Busch, M., & Hausotte, T. (2022). Application of an edge detection algorithm
for surface determination in industrial X-ray computed tomography. Production
Engineering. https://doi.org/10.1007/s11740-021-01100-z
bibtex: '@article{Busch_Hausotte_2022, title={Application of an edge detection algorithm
for surface determination in industrial X-ray computed tomography}, DOI={10.1007/s11740-021-01100-z},
journal={Production Engineering}, author={Busch, M. and Hausotte, T.}, year={2022}
}'
chicago: Busch, M., and T. Hausotte. “Application of an Edge Detection Algorithm
for Surface Determination in Industrial X-Ray Computed Tomography.” Production
Engineering, 2022. https://doi.org/10.1007/s11740-021-01100-z.
ieee: 'M. Busch and T. Hausotte, “Application of an edge detection algorithm for
surface determination in industrial X-ray computed tomography,” Production
Engineering, 2022, doi: 10.1007/s11740-021-01100-z.'
mla: Busch, M., and T. Hausotte. “Application of an Edge Detection Algorithm for
Surface Determination in Industrial X-Ray Computed Tomography.” Production
Engineering, 2022, doi:10.1007/s11740-021-01100-z.
short: M. Busch, T. Hausotte, Production Engineering (2022).
date_created: 2022-03-28T12:15:58Z
date_updated: 2023-01-02T10:57:15Z
department:
- _id: '630'
doi: 10.1007/s11740-021-01100-z
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '149'
name: 'TRR 285 – C05: TRR 285 - Subproject C05'
publication: Production Engineering
status: public
title: Application of an edge detection algorithm for surface determination in industrial
X-ray computed tomography
type: journal_article
user_id: '14931'
year: '2022'
...
---
_id: '30628'
abstract:
- lang: eng
text: The work carried out is based on the thesis properties of clinched joints
are determined by the proportions of binding mechanisms form-closure, force-closure
and material-closure. To describe the acting binding mechanisms and thus to derive
the joint properties, detailed knowledge of the local effect of the individual
binding mechanisms is necessary to ensure their targeted adjustment by the joining
process. The targeted setting of different proportions of the binding mechanisms
is achieved firstly via tool geometry and secondly via surface condition of the
joined parts. An introduced form-closure component can be quantified by metallographic
cross section with subsequent measurement of the quality-determining parameters
such as undercut, penetration depth and neck thickness. To qualify the force-closure
component, a torsional load can be applied mechanically at rotationally symmetrical
clinch joints. This also allows the influence of different surface conditions
on the tribological system to be quantified. Measurement of electrical resistance
can reveal the binding mechanisms of force- and material-closure. These investigations
are carried out on an aluminum joining part combination of the same type. As a
result of these investigations, the clinched joints can be designed according
to the load occurring in the later life cycle in the form of an optimum and compromise
variant with regard to minimum loads to be transmitted mechanically, electrically
with regard to low resistance or manufacturing with minimum energy input.
author:
- first_name: J.
full_name: Kalich, J.
last_name: Kalich
- first_name: U.
full_name: Füssel, U.
last_name: Füssel
citation:
ama: Kalich J, Füssel U. Design of clinched joints on the basis of binding mechanisms.
Production Engineering. Published online 2022. doi:10.1007/s11740-022-01108-z
apa: Kalich, J., & Füssel, U. (2022). Design of clinched joints on the basis
of binding mechanisms. Production Engineering. https://doi.org/10.1007/s11740-022-01108-z
bibtex: '@article{Kalich_Füssel_2022, title={Design of clinched joints on the basis
of binding mechanisms}, DOI={10.1007/s11740-022-01108-z},
journal={Production Engineering}, author={Kalich, J. and Füssel, U.}, year={2022}
}'
chicago: Kalich, J., and U. Füssel. “Design of Clinched Joints on the Basis of Binding
Mechanisms.” Production Engineering, 2022. https://doi.org/10.1007/s11740-022-01108-z.
ieee: 'J. Kalich and U. Füssel, “Design of clinched joints on the basis of binding
mechanisms,” Production Engineering, 2022, doi: 10.1007/s11740-022-01108-z.'
mla: Kalich, J., and U. Füssel. “Design of Clinched Joints on the Basis of Binding
Mechanisms.” Production Engineering, 2022, doi:10.1007/s11740-022-01108-z.
short: J. Kalich, U. Füssel, Production Engineering (2022).
date_created: 2022-03-28T10:30:59Z
date_updated: 2023-01-02T10:56:10Z
department:
- _id: '630'
doi: 10.1007/s11740-022-01108-z
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '138'
name: 'TRR 285 – A04: TRR 285 - Subproject A04'
publication: Production Engineering
status: public
title: Design of clinched joints on the basis of binding mechanisms
type: journal_article
user_id: '14931'
year: '2022'
...