---
_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: '61415'
abstract:
- lang: eng
text: 'Increasing material costs, decreasing availability, and ever-higher demands
on environmental compatibility and complexity require new strategies in the development
and production of functional components. Consequently, a combined approach from
the areas of design, material science, and manufacturing is mandatory, in order
to meet the requirements. Reducing the number of parts, using lightweight materials
and applying hybrid components with a multimaterial mix are possible solutions.
Nevertheless, conventional joining operations like welding or riveting are reaching
their limits in terms of material utilization, load-bearing capacity as well as
versatility of the process. Thus, innovative and versatile joining by forming
operations and process combinations are focus of current research. In this context,
the innovative process of orbital forming had been investigated as a joining by
forming operation to manufacture load-adapted hybrid functional components. By
tilting of one tool component during the process, a radial material flow is generated,
allowing the crimping of the two joining partners. Nevertheless, the load-bearing
capacity in axial direction could be identified as limiting factor for a possible
application. Therefore, the aim of this investigation is the development of a
fundamental process understanding on the influence of a novel geometrical adaption
of the joint on the resulting load bearing capacity. The influence of varying
geometrical proportions of the joint on the quality is evaluated, considering
the form filling, the geometrical properties of the components as well as the
maximum transmittable axial load. As joining partners, the dual-phase steel DP600
and the aluminum alloy EN AW-5754 with a thickness of 2.0 mm are used. '
article_number: '09544089241282807'
author:
- first_name: A.
full_name: Hetzel, A.
last_name: Hetzel
- first_name: Simon
full_name: Wituschek, Simon
id: '83423'
last_name: Wituschek
- first_name: D.
full_name: Römisch, D.
last_name: Römisch
- first_name: F.
full_name: Sippel, F.
last_name: Sippel
- first_name: M.
full_name: Lechner, M.
last_name: Lechner
- first_name: M.
full_name: Merklein, M.
last_name: Merklein
citation:
ama: 'Hetzel A, Wituschek S, Römisch D, Sippel F, Lechner M, Merklein M. Investigation
on the load-bearing capacity and joint formation of hybrid functional components
joined by orbital forming. Proceedings of the Institution of Mechanical Engineers,
Part E: Journal of Process Mechanical Engineering. Published online 2024.
doi:10.1177/09544089241282807'
apa: 'Hetzel, A., Wituschek, S., Römisch, D., Sippel, F., Lechner, M., & Merklein,
M. (2024). Investigation on the load-bearing capacity and joint formation of hybrid
functional components joined by orbital forming. Proceedings of the Institution
of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering,
Article 09544089241282807. https://doi.org/10.1177/09544089241282807'
bibtex: '@article{Hetzel_Wituschek_Römisch_Sippel_Lechner_Merklein_2024, title={Investigation
on the load-bearing capacity and joint formation of hybrid functional components
joined by orbital forming}, DOI={10.1177/09544089241282807},
number={09544089241282807}, journal={Proceedings of the Institution of Mechanical
Engineers, Part E: Journal of Process Mechanical Engineering}, publisher={SAGE
Publications}, author={Hetzel, A. and Wituschek, Simon and Römisch, D. and Sippel,
F. and Lechner, M. and Merklein, M.}, year={2024} }'
chicago: 'Hetzel, A., Simon Wituschek, D. Römisch, F. Sippel, M. Lechner, and M.
Merklein. “Investigation on the Load-Bearing Capacity and Joint Formation of Hybrid
Functional Components Joined by Orbital Forming.” Proceedings of the Institution
of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering,
2024. https://doi.org/10.1177/09544089241282807.'
ieee: 'A. Hetzel, S. Wituschek, D. Römisch, F. Sippel, M. Lechner, and M. Merklein,
“Investigation on the load-bearing capacity and joint formation of hybrid functional
components joined by orbital forming,” Proceedings of the Institution of Mechanical
Engineers, Part E: Journal of Process Mechanical Engineering, Art. no. 09544089241282807,
2024, doi: 10.1177/09544089241282807.'
mla: 'Hetzel, A., et al. “Investigation on the Load-Bearing Capacity and Joint Formation
of Hybrid Functional Components Joined by Orbital Forming.” Proceedings of
the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical
Engineering, 09544089241282807, SAGE Publications, 2024, doi:10.1177/09544089241282807.'
short: 'A. Hetzel, S. Wituschek, D. Römisch, F. Sippel, M. Lechner, M. Merklein,
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process
Mechanical Engineering (2024).'
date_created: 2025-09-23T13:21:21Z
date_updated: 2025-09-23T13:34:05Z
doi: 10.1177/09544089241282807
language:
- iso: eng
project:
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '133'
name: TRR 285 - Project Area C
- _id: '146'
name: TRR 285 - Subproject C02
- _id: '145'
name: TRR 285 - Subproject C01
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: Investigation on the load-bearing capacity and joint formation of hybrid functional
components joined by orbital forming
type: journal_article
user_id: '44935'
year: '2024'
...
---
_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: '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: '34249'
abstract:
- lang: eng
text: The trend towards lightweight design, driven by increasingly stringent emission
targets, poses challenges to conventional joining processes due to the different
mechanical properties of the joining partners used to manufacture multi-material
systems. For this reason, new versatile joining processes are in demand for joining
dissimilar materials. In this regard, pin joining with cold extruded pin structures
is a relatively new, two-stage joining process for joining materials such as high-strength
steel and aluminium as well as steel and fibre-reinforced plastic to multi-material
systems, without the need for auxiliary elements. Due to the novelty of the process,
there are currently only a few studies on the robustness of this joining process
available. Thus, limited statements on the stability of the joining process considering
uncertain process conditions, such as varying material properties or friction
values, can be provided. Motivated by this, the presented work investigates the
influence of different uncertain process parameters on the pin extrusion as well
as on the joining process itself, carrying out a systematic robustness analysis.
Therefore, the methodical approach covers the complete process chain of pin joining,
including the load-bearing capacity of the joint by means of numerical simulation
and data-driven methods. Thereby, a deeper understanding of the pin joining process
is generated and the versatility of the novel joining process is increased. Additionally,
the provision of manufacturing recommendations for the forming of pin joints leads
to a significant decrease in the failure probability caused by ploughing or buckling
effects.
article_number: '122'
author:
- first_name: David
full_name: Römisch, David
last_name: Römisch
- 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
- first_name: Marion
full_name: Merklein, Marion
last_name: Merklein
citation:
ama: Römisch D, Zirngibl C, Schleich B, Wartzack S, Merklein M. Robustness Analysis
of Pin Joining. Journal of Manufacturing and Materials Processing. 2022;6(5).
doi:10.3390/jmmp6050122
apa: Römisch, D., Zirngibl, C., Schleich, B., Wartzack, S., & Merklein, M. (2022).
Robustness Analysis of Pin Joining. Journal of Manufacturing and Materials
Processing, 6(5), Article 122. https://doi.org/10.3390/jmmp6050122
bibtex: '@article{Römisch_Zirngibl_Schleich_Wartzack_Merklein_2022, title={Robustness
Analysis of Pin Joining}, volume={6}, DOI={10.3390/jmmp6050122},
number={5122}, journal={Journal of Manufacturing and Materials Processing}, publisher={MDPI
AG}, author={Römisch, David and Zirngibl, Christoph and Schleich, Benjamin and
Wartzack, Sandro and Merklein, Marion}, year={2022} }'
chicago: Römisch, David, Christoph Zirngibl, Benjamin Schleich, Sandro Wartzack,
and Marion Merklein. “Robustness Analysis of Pin Joining.” Journal of Manufacturing
and Materials Processing 6, no. 5 (2022). https://doi.org/10.3390/jmmp6050122.
ieee: 'D. Römisch, C. Zirngibl, B. Schleich, S. Wartzack, and M. Merklein, “Robustness
Analysis of Pin Joining,” Journal of Manufacturing and Materials Processing,
vol. 6, no. 5, Art. no. 122, 2022, doi: 10.3390/jmmp6050122.'
mla: Römisch, David, et al. “Robustness Analysis of Pin Joining.” Journal of
Manufacturing and Materials Processing, vol. 6, no. 5, 122, MDPI AG, 2022,
doi:10.3390/jmmp6050122.
short: D. Römisch, C. Zirngibl, B. Schleich, S. Wartzack, M. Merklein, Journal of
Manufacturing and Materials Processing 6 (2022).
date_created: 2022-12-06T19:03:30Z
date_updated: 2023-01-02T11:01:05Z
department:
- _id: '630'
doi: 10.3390/jmmp6050122
intvolume: ' 6'
issue: '5'
keyword:
- Industrial and Manufacturing Engineering
- Mechanical Engineering
- Mechanics of Materials
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.mdpi.com/2504-4494/6/5/122
oa: '1'
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'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '145'
name: 'TRR 285 – C01: TRR 285 - Subproject C01'
publication: Journal of Manufacturing and Materials Processing
publication_identifier:
issn:
- 2504-4494
publication_status: published
publisher: MDPI AG
status: public
title: Robustness Analysis of Pin Joining
type: journal_article
user_id: '14931'
volume: 6
year: '2022'
...
---
_id: '34248'
abstract:
- lang: eng
text: Pin extrusion is a common process to realise pin structures in different geometrical
dimensions for a subsequent joining operation. Nevertheless, the process of pin
extrusion offers process limits regarding sheet thinning as a consequence of the
punch penetration depth into the sheet. Thereby, cracks at the residual sheet
thickness can occur during strength tests, resulting in a failure of the complete
joint due to severe thinning. Therefore, measures have to be taken into account
to reduce the thinning. One possibility is the application of orbital formed tailored
blanks with a local material pre-distribution, which allows a higher sheet thickness
in the desired area. Within this contribution, the novel approach of a process
combination of orbital forming and pin extrusion is investigated. To reveal the
potential of a local material pre-distribution, conventional specimens are compared
with previously orbital formed components. Relevant parameters such as the residual
sheet thickness, the pin height as well as the average hardness values are compared.
The results show a significant positive influence of a local material pre-distribution
on the residual sheet thickness as well as the resulting pin height. Furthermore,
the strain hardening during orbital forming can be seen as an additional advantage.
To conclude the results, the process limits of conventional pin extrusion can
be expanded significantly by the application of specimens with a local material
pre-distribution.
article_number: '127'
author:
- first_name: David
full_name: Römisch, David
last_name: Römisch
- first_name: Andreas
full_name: Hetzel, Andreas
last_name: Hetzel
- first_name: Simon
full_name: Wituschek, Simon
last_name: Wituschek
- first_name: Michael
full_name: Lechner, Michael
last_name: Lechner
- first_name: Marion
full_name: Merklein, Marion
last_name: Merklein
citation:
ama: Römisch D, Hetzel A, Wituschek S, Lechner M, Merklein M. Pin Extrusion for
Mechanical Joining from Orbital Formed Tailored Blanks with Local Material Pre-Distribution.
Journal of Manufacturing and Materials Processing. 2022;6(6). doi:10.3390/jmmp6060127
apa: Römisch, D., Hetzel, A., Wituschek, S., Lechner, M., & Merklein, M. (2022).
Pin Extrusion for Mechanical Joining from Orbital Formed Tailored Blanks with
Local Material Pre-Distribution. Journal of Manufacturing and Materials Processing,
6(6), Article 127. https://doi.org/10.3390/jmmp6060127
bibtex: '@article{Römisch_Hetzel_Wituschek_Lechner_Merklein_2022, title={Pin Extrusion
for Mechanical Joining from Orbital Formed Tailored Blanks with Local Material
Pre-Distribution}, volume={6}, DOI={10.3390/jmmp6060127},
number={6127}, journal={Journal of Manufacturing and Materials Processing}, publisher={MDPI
AG}, author={Römisch, David and Hetzel, Andreas and Wituschek, Simon and Lechner,
Michael and Merklein, Marion}, year={2022} }'
chicago: Römisch, David, Andreas Hetzel, Simon Wituschek, Michael Lechner, and Marion
Merklein. “Pin Extrusion for Mechanical Joining from Orbital Formed Tailored Blanks
with Local Material Pre-Distribution.” Journal of Manufacturing and Materials
Processing 6, no. 6 (2022). https://doi.org/10.3390/jmmp6060127.
ieee: 'D. Römisch, A. Hetzel, S. Wituschek, M. Lechner, and M. Merklein, “Pin Extrusion
for Mechanical Joining from Orbital Formed Tailored Blanks with Local Material
Pre-Distribution,” Journal of Manufacturing and Materials Processing, vol.
6, no. 6, Art. no. 127, 2022, doi: 10.3390/jmmp6060127.'
mla: Römisch, David, et al. “Pin Extrusion for Mechanical Joining from Orbital Formed
Tailored Blanks with Local Material Pre-Distribution.” Journal of Manufacturing
and Materials Processing, vol. 6, no. 6, 127, MDPI AG, 2022, doi:10.3390/jmmp6060127.
short: D. Römisch, A. Hetzel, S. Wituschek, M. Lechner, M. Merklein, Journal of
Manufacturing and Materials Processing 6 (2022).
date_created: 2022-12-06T18:56:24Z
date_updated: 2023-01-02T11:01:34Z
department:
- _id: '630'
doi: 10.3390/jmmp6060127
intvolume: ' 6'
issue: '6'
keyword:
- Industrial and Manufacturing Engineering
- Mechanical Engineering
- Mechanics of Materials
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
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'
- _id: '146'
name: 'TRR 285 – C02: TRR 285 - Subproject C02'
publication: Journal of Manufacturing and Materials Processing
publication_identifier:
issn:
- 2504-4494
publication_status: published
publisher: MDPI AG
status: public
title: Pin Extrusion for Mechanical Joining from Orbital Formed Tailored Blanks with
Local Material Pre-Distribution
type: journal_article
user_id: '14931'
volume: 6
year: '2022'
...
---
_id: '34247'
abstract:
- lang: eng
text: 'The paper presents research regarding a thermally supported multi-material
clinching process (hotclinching) for metal and thermoplastic composite (TPC) sheets:
an experimental approach to investigate the flow pressing phenomena during joining.
Therefore, an experimental setup is developed to compress the TPC-specimens in
out-of-plane direction with different initial TPC thicknesses and varying temperature
levels. The deformed specimens are analyzed with computed tomography to investigate
the resultant inner material structure at different compaction levels. The results
are compared in terms of force-compaction-curves and occurring phenomena during
compaction. The change of the material structure is characterized by sliding phenomena
and crack initiation and growth.'
article_number: '5039'
author:
- first_name: Benjamin
full_name: Gröger, Benjamin
last_name: Gröger
- first_name: David
full_name: Römisch, David
last_name: Römisch
- first_name: Martin
full_name: Kraus, Martin
last_name: Kraus
- first_name: Juliane
full_name: Troschitz, Juliane
last_name: Troschitz
- first_name: René
full_name: Füßel, René
last_name: Füßel
- first_name: Marion
full_name: Merklein, Marion
last_name: Merklein
- first_name: Maik
full_name: Gude, Maik
last_name: Gude
citation:
ama: Gröger B, Römisch D, Kraus M, et al. Warmforming Flow Pressing Characteristics
of Continuous Fibre Reinforced Thermoplastic Composites. Polymers. 2022;14(22).
doi:10.3390/polym14225039
apa: Gröger, B., Römisch, D., Kraus, M., Troschitz, J., Füßel, R., Merklein, M.,
& Gude, M. (2022). Warmforming Flow Pressing Characteristics of Continuous
Fibre Reinforced Thermoplastic Composites. Polymers, 14(22), Article
5039. https://doi.org/10.3390/polym14225039
bibtex: '@article{Gröger_Römisch_Kraus_Troschitz_Füßel_Merklein_Gude_2022, title={Warmforming
Flow Pressing Characteristics of Continuous Fibre Reinforced Thermoplastic Composites},
volume={14}, DOI={10.3390/polym14225039},
number={225039}, journal={Polymers}, publisher={MDPI AG}, author={Gröger, Benjamin
and Römisch, David and Kraus, Martin and Troschitz, Juliane and Füßel, René and
Merklein, Marion and Gude, Maik}, year={2022} }'
chicago: Gröger, Benjamin, David Römisch, Martin Kraus, Juliane Troschitz, René
Füßel, Marion Merklein, and Maik Gude. “Warmforming Flow Pressing Characteristics
of Continuous Fibre Reinforced Thermoplastic Composites.” Polymers 14,
no. 22 (2022). https://doi.org/10.3390/polym14225039.
ieee: 'B. Gröger et al., “Warmforming Flow Pressing Characteristics of Continuous
Fibre Reinforced Thermoplastic Composites,” Polymers, vol. 14, no. 22,
Art. no. 5039, 2022, doi: 10.3390/polym14225039.'
mla: Gröger, Benjamin, et al. “Warmforming Flow Pressing Characteristics of Continuous
Fibre Reinforced Thermoplastic Composites.” Polymers, vol. 14, no. 22,
5039, MDPI AG, 2022, doi:10.3390/polym14225039.
short: B. Gröger, D. Römisch, M. Kraus, J. Troschitz, R. Füßel, M. Merklein, M.
Gude, Polymers 14 (2022).
date_created: 2022-12-06T18:51:19Z
date_updated: 2023-01-02T11:02:56Z
department:
- _id: '630'
doi: 10.3390/polym14225039
intvolume: ' 14'
issue: '22'
keyword:
- Polymers and Plastics
- General Chemistry
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
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: '145'
name: 'TRR 285 – C01: TRR 285 - Subproject C01'
publication: Polymers
publication_identifier:
issn:
- 2073-4360
publication_status: published
publisher: MDPI AG
status: public
title: Warmforming Flow Pressing Characteristics of Continuous Fibre Reinforced Thermoplastic
Composites
type: journal_article
user_id: '14931'
volume: 14
year: '2022'
...
---
_id: '36468'
author:
- first_name: David
full_name: Römisch, David
last_name: Römisch
- first_name: Marion
full_name: Merklein, Marion
last_name: Merklein
citation:
ama: 'Römisch D, Merklein M. Experimental and Numerical Analysis of Cold Formed
Multi Pin Structures Using a Multi-Acting Tool Design. In: ; 2022.'
apa: Römisch, D., & Merklein, M. (2022). Experimental and Numerical Analysis
of Cold Formed Multi Pin Structures Using a Multi-Acting Tool Design. 12th
Tooling Conference and Exhibition, Örebro.
bibtex: '@inproceedings{Römisch_Merklein_2022, title={Experimental and Numerical
Analysis of Cold Formed Multi Pin Structures Using a Multi-Acting Tool Design},
author={Römisch, David and Merklein, Marion}, year={2022} }'
chicago: Römisch, David, and Marion Merklein. “Experimental and Numerical Analysis
of Cold Formed Multi Pin Structures Using a Multi-Acting Tool Design,” 2022.
ieee: D. Römisch and M. Merklein, “Experimental and Numerical Analysis of Cold Formed
Multi Pin Structures Using a Multi-Acting Tool Design,” presented at the 12th
Tooling Conference and Exhibition, Örebro, 2022.
mla: Römisch, David, and Marion Merklein. Experimental and Numerical Analysis
of Cold Formed Multi Pin Structures Using a Multi-Acting Tool Design. 2022.
short: 'D. Römisch, M. Merklein, in: 2022.'
conference:
location: Örebro
name: 12th Tooling Conference and Exhibition
date_created: 2023-01-12T14:30:21Z
date_updated: 2023-01-12T14:34:25Z
department:
- _id: '630'
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_identifier:
unknown:
- ISBN 978-3-200-08359-2
status: public
title: Experimental and Numerical Analysis of Cold Formed Multi Pin Structures Using
a Multi-Acting Tool Design
type: conference
user_id: '7850'
year: '2022'
...
---
_id: '34215'
abstract:
- lang: eng
text: 'Clinching as a mechanical joining technique allows a fast and reliable joining
of metal sheets in large-scale production. An efficient design and dimensioning
of clinched joints requires a holistic understanding of the material, the joining
process and the resulting properties of the joint. In this paper, the process
chain for clinching metal sheets is described and experimental techniques are
proposed to analyze the process-microstructure-property relationships from the
sheet metal to the joined structure. At the example of clinching aluminum EN AW
6014, characterization methods are applied and discussed for the following characteristics:
the mechanical properties of the sheet materials, the tribological behavior in
the joining system, the joining process and the resulting material structure,
the load-bearing behavior of the joint, the damage and degradation as well as
the service life and crack growth behavior. The compilation of the characterization
methods gives an overview on the advantages and weaknesses of the methods and
the multiple interactions of material, process and properties during clinching.
In addition, the results of the analyses on EN AW 6014 can be applied for parameterization
and validation of simulations.'
article_number: '100108'
author:
- first_name: Robert
full_name: Kupfer, Robert
last_name: Kupfer
- first_name: Daniel
full_name: Köhler, Daniel
last_name: Köhler
- first_name: David
full_name: Römisch, David
last_name: Römisch
- first_name: Simon
full_name: Wituschek, Simon
last_name: Wituschek
- first_name: Lars
full_name: Ewenz, Lars
last_name: Ewenz
- first_name: Jan
full_name: Kalich, Jan
last_name: Kalich
- first_name: Deborah
full_name: Weiß, Deborah
id: '45673'
last_name: Weiß
- first_name: Behdad
full_name: Sadeghian, Behdad
last_name: Sadeghian
- first_name: Matthias
full_name: Busch, Matthias
last_name: Busch
- first_name: Jan Tobias
full_name: Krüger, Jan Tobias
id: '44307'
last_name: Krüger
orcid: 0000-0002-0827-9654
- first_name: Moritz
full_name: Neuser, Moritz
id: '32340'
last_name: Neuser
- first_name: Olexandr
full_name: Grydin, Olexandr
id: '43822'
last_name: Grydin
- first_name: Max
full_name: Böhnke, Max
id: '45779'
last_name: Böhnke
- first_name: Christian Roman
full_name: Bielak, Christian Roman
id: '34782'
last_name: Bielak
- first_name: Juliane
full_name: Troschitz, Juliane
last_name: Troschitz
citation:
ama: Kupfer R, Köhler D, Römisch D, et al. Clinching of Aluminum Materials – Methods
for the Continuous Characterization of Process, Microstructure and Properties.
Journal of Advanced Joining Processes. 2022;5. doi:10.1016/j.jajp.2022.100108
apa: Kupfer, R., Köhler, D., Römisch, D., Wituschek, S., Ewenz, L., Kalich, J.,
Weiß, D., Sadeghian, B., Busch, M., Krüger, J. T., Neuser, M., Grydin, O., Böhnke,
M., Bielak, C. R., & Troschitz, J. (2022). Clinching of Aluminum Materials
– Methods for the Continuous Characterization of Process, Microstructure and Properties.
Journal of Advanced Joining Processes, 5, Article 100108. https://doi.org/10.1016/j.jajp.2022.100108
bibtex: '@article{Kupfer_Köhler_Römisch_Wituschek_Ewenz_Kalich_Weiß_Sadeghian_Busch_Krüger_et
al._2022, title={Clinching of Aluminum Materials – Methods for the Continuous
Characterization of Process, Microstructure and Properties}, volume={5}, DOI={10.1016/j.jajp.2022.100108},
number={100108}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier
BV}, author={Kupfer, Robert and Köhler, Daniel and Römisch, David and Wituschek,
Simon and Ewenz, Lars and Kalich, Jan and Weiß, Deborah and Sadeghian, Behdad
and Busch, Matthias and Krüger, Jan Tobias and et al.}, year={2022} }'
chicago: Kupfer, Robert, Daniel Köhler, David Römisch, Simon Wituschek, Lars Ewenz,
Jan Kalich, Deborah Weiß, et al. “Clinching of Aluminum Materials – Methods for
the Continuous Characterization of Process, Microstructure and Properties.” Journal
of Advanced Joining Processes 5 (2022). https://doi.org/10.1016/j.jajp.2022.100108.
ieee: 'R. Kupfer et al., “Clinching of Aluminum Materials – Methods for the
Continuous Characterization of Process, Microstructure and Properties,” Journal
of Advanced Joining Processes, vol. 5, Art. no. 100108, 2022, doi: 10.1016/j.jajp.2022.100108.'
mla: Kupfer, Robert, et al. “Clinching of Aluminum Materials – Methods for the Continuous
Characterization of Process, Microstructure and Properties.” Journal of Advanced
Joining Processes, vol. 5, 100108, Elsevier BV, 2022, doi:10.1016/j.jajp.2022.100108.
short: R. Kupfer, D. Köhler, D. Römisch, S. Wituschek, L. Ewenz, J. Kalich, D. Weiß,
B. Sadeghian, M. Busch, J.T. Krüger, M. Neuser, O. Grydin, M. Böhnke, C.R. Bielak,
J. Troschitz, Journal of Advanced Joining Processes 5 (2022).
date_created: 2022-12-05T21:17:22Z
date_updated: 2024-03-20T11:54:33Z
department:
- _id: '630'
- _id: '158'
doi: 10.1016/j.jajp.2022.100108
intvolume: ' 5'
keyword:
- Mechanical Engineering
- Mechanics of Materials
- Engineering (miscellaneous)
- Chemical Engineering (miscellaneous)
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: '148'
name: 'TRR 285 – C04: TRR 285 - Subproject C04'
- _id: '146'
name: 'TRR 285 – C02: TRR 285 - Subproject C02'
- _id: '145'
name: 'TRR 285 – C01: TRR 285 - Subproject C01'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '141'
name: 'TRR 285 – B02: TRR 285 - Subproject B02'
- _id: '138'
name: 'TRR 285 – A04: TRR 285 - Subproject A04'
- _id: '135'
name: 'TRR 285 – A01: TRR 285 - Subproject A01'
- _id: '136'
name: 'TRR 285 – A02: TRR 285 - Subproject A02'
- _id: '149'
name: 'TRR 285 – C05: TRR 285 - Subproject C05'
- _id: '143'
name: 'TRR 285 – B04: TRR 285 - Subproject B04'
publication: Journal of Advanced Joining Processes
publication_identifier:
issn:
- 2666-3309
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: Clinching of Aluminum Materials – Methods for the Continuous Characterization
of Process, Microstructure and Properties
type: journal_article
user_id: '34782'
volume: 5
year: '2022'
...
---
_id: '34216'
abstract:
- lang: eng
text: Mechanical joining technologies are increasingly used in multi-material lightweight
constructions and offer opportunities to create versatile joining processes due
to their low heat input, robustness to metallurgical incompatibilities and various
process variants. They can be categorised into technologies which require an auxiliary
joining element, or do not require an auxiliary joining element. A typical example
for a mechanical joining process with auxiliary joining element is self-piercing
riveting. A wide range of processes exist which are not requiring an auxiliary
joining element. This allows both point-shaped (e.g., by clinching) and line-shaped
(e.g., friction stir welding) joints to be produced. In order to achieve versatile
processes, challenges exist in particular in the creation of intervention possibilities
in the process and the understanding and handling of materials that are difficult
to join, such as fiber reinforced plastics (FRP) or high-strength metals. In addition,
predictive capability is required, which in particular requires accurate process
simulation. Finally, the processes must be measured non-destructively in order
to generate control variables in the process or to investigate the cause-effect
relationship. This paper covers the state of the art in scientific research concerning
mechanical joining and discusses future challenges on the way to versatile mechanical
joining processes.
article_number: '100113'
author:
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: M.
full_name: Merklein, M.
last_name: Merklein
- first_name: A.
full_name: Brosius, A.
last_name: Brosius
- first_name: D.
full_name: Drummer, D.
last_name: Drummer
- first_name: L.
full_name: Fratini, L.
last_name: Fratini
- first_name: U.
full_name: Füssel, U.
last_name: Füssel
- first_name: M.
full_name: Gude, M.
last_name: Gude
- first_name: Werner
full_name: Homberg, Werner
id: '233'
last_name: Homberg
- first_name: P.A.F.
full_name: Martins, P.A.F.
last_name: Martins
- first_name: Mathias
full_name: Bobbert, Mathias
id: '7850'
last_name: Bobbert
- first_name: M.
full_name: Lechner, M.
last_name: Lechner
- first_name: R.
full_name: Kupfer, R.
last_name: Kupfer
- first_name: B.
full_name: Gröger, B.
last_name: Gröger
- first_name: Daxin
full_name: Han, Daxin
id: '36544'
last_name: Han
- first_name: J.
full_name: Kalich, J.
last_name: Kalich
- first_name: Fabian
full_name: Kappe, Fabian
id: '66459'
last_name: Kappe
- first_name: T.
full_name: Kleffel, T.
last_name: Kleffel
- first_name: D.
full_name: Köhler, D.
last_name: Köhler
- first_name: C.-M.
full_name: Kuball, C.-M.
last_name: Kuball
- first_name: J.
full_name: Popp, J.
last_name: Popp
- first_name: D.
full_name: Römisch, D.
last_name: Römisch
- first_name: J.
full_name: Troschitz, J.
last_name: Troschitz
- first_name: Christian
full_name: Wischer, Christian
id: '72219'
last_name: Wischer
- first_name: S.
full_name: Wituschek, S.
last_name: Wituschek
- first_name: M.
full_name: Wolf, M.
last_name: Wolf
citation:
ama: Meschut G, Merklein M, Brosius A, et al. Review on mechanical joining by plastic
deformation. Journal of Advanced Joining Processes. 2022;5. doi:10.1016/j.jajp.2022.100113
apa: Meschut, G., Merklein, M., Brosius, A., Drummer, D., Fratini, L., Füssel, U.,
Gude, M., Homberg, W., Martins, P. A. F., Bobbert, M., Lechner, M., Kupfer, R.,
Gröger, B., Han, D., Kalich, J., Kappe, F., Kleffel, T., Köhler, D., Kuball, C.-M.,
… Wolf, M. (2022). Review on mechanical joining by plastic deformation. Journal
of Advanced Joining Processes, 5, Article 100113. https://doi.org/10.1016/j.jajp.2022.100113
bibtex: '@article{Meschut_Merklein_Brosius_Drummer_Fratini_Füssel_Gude_Homberg_Martins_Bobbert_et
al._2022, title={Review on mechanical joining by plastic deformation}, volume={5},
DOI={10.1016/j.jajp.2022.100113},
number={100113}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier
BV}, author={Meschut, Gerson and Merklein, M. and Brosius, A. and Drummer, D.
and Fratini, L. and Füssel, U. and Gude, M. and Homberg, Werner and Martins, P.A.F.
and Bobbert, Mathias and et al.}, year={2022} }'
chicago: Meschut, Gerson, M. Merklein, A. Brosius, D. Drummer, L. Fratini, U. Füssel,
M. Gude, et al. “Review on Mechanical Joining by Plastic Deformation.” Journal
of Advanced Joining Processes 5 (2022). https://doi.org/10.1016/j.jajp.2022.100113.
ieee: 'G. Meschut et al., “Review on mechanical joining by plastic deformation,”
Journal of Advanced Joining Processes, vol. 5, Art. no. 100113, 2022, doi:
10.1016/j.jajp.2022.100113.'
mla: Meschut, Gerson, et al. “Review on Mechanical Joining by Plastic Deformation.”
Journal of Advanced Joining Processes, vol. 5, 100113, Elsevier BV, 2022,
doi:10.1016/j.jajp.2022.100113.
short: G. Meschut, M. Merklein, A. Brosius, D. Drummer, L. Fratini, U. Füssel, M.
Gude, W. Homberg, P.A.F. Martins, M. Bobbert, M. Lechner, R. Kupfer, B. Gröger,
D. Han, J. Kalich, F. Kappe, T. Kleffel, D. Köhler, C.-M. Kuball, J. Popp, D.
Römisch, J. Troschitz, C. Wischer, S. Wituschek, M. Wolf, Journal of Advanced
Joining Processes 5 (2022).
date_created: 2022-12-05T21:24:49Z
date_updated: 2023-04-27T08:52:38Z
department:
- _id: '157'
- _id: '156'
- _id: '9'
doi: 10.1016/j.jajp.2022.100113
intvolume: ' 5'
keyword:
- Mechanical Engineering
- Mechanics of Materials
- Engineering (miscellaneous)
- Chemical Engineering (miscellaneous)
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: '135'
name: 'TRR 285 – A01: TRR 285 - Subproject A01'
- _id: '138'
name: 'TRR 285 – A04: TRR 285 - Subproject A04'
- _id: '137'
name: 'TRR 285 – A03: TRR 285 - Subproject A03'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '140'
name: 'TRR 285 – B01: TRR 285 - Subproject B01'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '145'
name: 'TRR 285 – C01: TRR 285 - Subproject C01'
- _id: '146'
name: 'TRR 285 – C02: TRR 285 - Subproject C02'
- _id: '147'
name: 'TRR 285 – C03: TRR 285 - Subproject C03'
- _id: '148'
name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: Journal of Advanced Joining Processes
publication_identifier:
issn:
- 2666-3309
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: Review on mechanical joining by plastic deformation
type: journal_article
user_id: '66459'
volume: 5
year: '2022'
...
---
_id: '30100'
abstract:
- lang: eng
text: Since the application of mechanical joining methods, such as clinching or
riveting, offers a robust solution for the generation of advanced multi-material
connections, the use in the field of lightweight designs (e.g. automotive industry)
is steadily increasing. Therefore, not only the design of an individual joint
is required but also the dimensioning of the entire joining connection is crucial.
However, in comparison to thermal joining techniques, such as spot welding, the
evaluation of the joints’ resistance against defined requirements (e.g. types
of load, minimal amount of load cycles) mainly relies on the consideration of
expert knowledge, a few design principles and a small amount of experimental data.
Since this generally implies the involvement of several domains, such as the material
characterization or the part design, a tremendous amount of data and knowledge
is separately generated for a certain dimensioning process. Nevertheless, the
lack of formalization and standardization in representing the gained knowledge
leads to a difficult and inconsistent reuse, sharing or searching of already existing
information. Thus, this contribution presents a specific ontology for the provision
of cross-domain knowledge about mechanical joining processes and highlights two
potential use cases of this ontology in the design of clinched and pin joints.
author:
- first_name: Christoph
full_name: Zirngibl, Christoph
last_name: Zirngibl
- first_name: Patricia
full_name: Kügler, Patricia
last_name: Kügler
- first_name: Julian
full_name: Popp, Julian
last_name: Popp
- 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: Dietmar
full_name: Drummer, Dietmar
last_name: Drummer
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Sandro
full_name: Wartzack, Sandro
last_name: Wartzack
- first_name: Benjamin
full_name: Schleich, Benjamin
last_name: Schleich
citation:
ama: Zirngibl C, Kügler P, Popp J, et al. Provision of cross-domain knowledge in
mechanical joining using ontologies. Production Engineering. Published
online 2022. doi:10.1007/s11740-022-01117-y
apa: Zirngibl, C., Kügler, P., Popp, J., Bielak, C. R., Bobbert, M., Drummer, D.,
Meschut, G., Wartzack, S., & Schleich, B. (2022). Provision of cross-domain
knowledge in mechanical joining using ontologies. Production Engineering.
https://doi.org/10.1007/s11740-022-01117-y
bibtex: '@article{Zirngibl_Kügler_Popp_Bielak_Bobbert_Drummer_Meschut_Wartzack_Schleich_2022,
title={Provision of cross-domain knowledge in mechanical joining using ontologies},
DOI={10.1007/s11740-022-01117-y},
journal={Production Engineering}, publisher={Springer Science and Business Media
LLC}, author={Zirngibl, Christoph and Kügler, Patricia and Popp, Julian and Bielak,
Christian Roman and Bobbert, Mathias and Drummer, Dietmar and Meschut, Gerson
and Wartzack, Sandro and Schleich, Benjamin}, year={2022} }'
chicago: Zirngibl, Christoph, Patricia Kügler, Julian Popp, Christian Roman Bielak,
Mathias Bobbert, Dietmar Drummer, Gerson Meschut, Sandro Wartzack, and Benjamin
Schleich. “Provision of Cross-Domain Knowledge in Mechanical Joining Using Ontologies.”
Production Engineering, 2022. https://doi.org/10.1007/s11740-022-01117-y.
ieee: 'C. Zirngibl et al., “Provision of cross-domain knowledge in mechanical
joining using ontologies,” Production Engineering, 2022, doi: 10.1007/s11740-022-01117-y.'
mla: Zirngibl, Christoph, et al. “Provision of Cross-Domain Knowledge in Mechanical
Joining Using Ontologies.” Production Engineering, Springer Science and
Business Media LLC, 2022, doi:10.1007/s11740-022-01117-y.
short: C. Zirngibl, P. Kügler, J. Popp, C.R. Bielak, M. Bobbert, D. Drummer, G.
Meschut, S. Wartzack, B. Schleich, Production Engineering (2022).
date_created: 2022-02-25T07:19:45Z
date_updated: 2023-04-27T07:42:19Z
department:
- _id: '157'
doi: 10.1007/s11740-022-01117-y
keyword:
- Industrial and Manufacturing Engineering
- Mechanical Engineering
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'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '145'
name: 'TRR 285 – C01: TRR 285 - Subproject C01'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '135'
name: 'TRR 285 – A01: TRR 285 - Subproject A01'
publication: Production Engineering
publication_identifier:
issn:
- 0944-6524
- 1863-7353
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
status: public
title: Provision of cross-domain knowledge in mechanical joining using ontologies
type: journal_article
user_id: '7850'
year: '2022'
...
---
_id: '30645'
abstract:
- lang: eng
text: As a new and innovative processing method for fabrication for fiber-reinforced
thermoplastic composites (CFRTs), the feasibility of ultrasonic welding technology
was proven in several studies. This method offers potential for the direct manufacturing
of CFRT–metal structures via embedded pin structures. Despite the previous studies,
a deeper understanding of the process of energy input and whether fibers work
as energy directors and consequently can, in combination with chosen processing
parameters, influence the consolidation quality of the CFRTs, is still unknown.
Consequently, the aim of this work is to establish a deeper process understanding
of the ultrasonic direct impregnation of fiber-reinforced thermoplastics with
an emphasis on the fiber’s function as energy directors. Based on the generated
insights, a better assessment of the feasibility of direct, hybrid part manufacturing
is possible. The produced samples were primarily evaluated by optical and mechanical
test methods. It is demonstrated that with higher welding time and amplitude,
a better consolidation quality can be achieved and that independent of the process
parameters chosen in this study, no significant fiber breakage occurs. This is
interpreted as a sign of a gentle impregnation process. Furthermore, based on
the examination of single roving and 5-layer set-ups, it is shown that the glass
fibers function as energy directors and can influence the transformation of sonic
energy into thermal energy. In comparison to industrially available CFRT material,
the mechanical properties are weaker, but materials and processes offer potential
for significant improvement. Based on these findings, proposals for a direct impregnation
and joining process are made.
author:
- first_name: J.
full_name: Popp, J.
last_name: Popp
- first_name: M.
full_name: Wolf, M.
last_name: Wolf
- first_name: T.
full_name: Mattner, T.
last_name: Mattner
- first_name: D.
full_name: Drummer, D.
last_name: Drummer
citation:
ama: Popp J, Wolf M, Mattner T, Drummer D. Energy direction in ultrasonic impregnation
of continuous fiber-reinforced thermoplastics. Journal of Composites Science.
2021;5:239. doi:10.3390/jcs5090239
apa: Popp, J., Wolf, M., Mattner, T., & Drummer, D. (2021). Energy direction
in ultrasonic impregnation of continuous fiber-reinforced thermoplastics. Journal
of Composites Science, 5, 239. https://doi.org/10.3390/jcs5090239
bibtex: '@article{Popp_Wolf_Mattner_Drummer_2021, title={Energy direction in ultrasonic
impregnation of continuous fiber-reinforced thermoplastics}, volume={5}, DOI={10.3390/jcs5090239}, journal={Journal
of Composites Science}, author={Popp, J. and Wolf, M. and Mattner, T. and Drummer,
D.}, year={2021}, pages={239} }'
chicago: 'Popp, J., M. Wolf, T. Mattner, and D. Drummer. “Energy Direction in Ultrasonic
Impregnation of Continuous Fiber-Reinforced Thermoplastics.” Journal of Composites
Science 5 (2021): 239. https://doi.org/10.3390/jcs5090239.'
ieee: 'J. Popp, M. Wolf, T. Mattner, and D. Drummer, “Energy direction in ultrasonic
impregnation of continuous fiber-reinforced thermoplastics,” Journal of Composites
Science, vol. 5, p. 239, 2021, doi: 10.3390/jcs5090239.'
mla: Popp, J., et al. “Energy Direction in Ultrasonic Impregnation of Continuous
Fiber-Reinforced Thermoplastics.” Journal of Composites Science, vol. 5,
2021, p. 239, doi:10.3390/jcs5090239.
short: J. Popp, M. Wolf, T. Mattner, D. Drummer, Journal of Composites Science 5
(2021) 239.
date_created: 2022-03-28T12:25:45Z
date_updated: 2022-03-29T12:43:36Z
doi: 10.3390/jcs5090239
intvolume: ' 5'
language:
- iso: eng
page: '239'
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 Composites Science
status: public
title: Energy direction in ultrasonic impregnation of continuous fiber-reinforced
thermoplastics
type: journal_article
user_id: '68518'
volume: 5
year: '2021'
...
---
_id: '30650'
abstract:
- lang: eng
text: Due to increasingly strict emission targets and regulatory requirements, especially
for companies in the transport industry, the demand for multi-material-systems
is continuously rising in order to lower energy consumption. In this context,
mechanical joining processes offer an environmentally friendly and flexible alternative
to established joining methods, especially in the field of lightweight design.
For example, cold-formed cylindrical pin structures show high potentials in joining
multi-material-systems without auxiliary elements. The pin structures are joined
either by pressing them directly into the joining partner or by caulking with
a pre-punched part. However, to evaluate the strength of the joint and to ensure
the joining reliability for versatile processes, such as changing joining partners
or batch variations, engineering designers currently have only limited design
principles available compared to thermal joining processes. Consequently, the
design of an optimal pin joint requires cost- and time-intensive experimental
investigations and adjustments to design or process parameters. As a solution,
data-driven methods offer procedures for structuring data and identifying dependencies
between varying process parameters and resulting pin structure characteristics.
Motivated by this, the paper presents an approach for the data-driven analysis
of cold-formed pin structures and offers a deeper understanding of how versatile
processes affect the pin characteristics. Therefore, the application of an intelligent
design of experiment in combination with several machine learning methods enable
the setup of a best-fitting meta-model. Resulting, the determination of a mathematical
model provides the opportunity to accurately estimate the pin height considering
only relevant geometrical and process parameters with a prediction quality of
95 %.
author:
- first_name: D.
full_name: Römisch, D.
last_name: Römisch
- first_name: C.
full_name: Zirngibl, C.
last_name: Zirngibl
- first_name: B.
full_name: Schleich, B.
last_name: Schleich
- first_name: S.
full_name: Wartzack, S.
last_name: Wartzack
- first_name: M.
full_name: Merklein, M.
last_name: Merklein
citation:
ama: 'Römisch D, Zirngibl C, Schleich B, Wartzack S, Merklein M. Data-driven analysis
of cold-formed pin structure characteristics in the context of versatile joining
processes. IOP Conference Series: Materials Science and Engineering. 2021;1157:012077.
doi:10.1088/1757-899X/1157/1/012077'
apa: 'Römisch, D., Zirngibl, C., Schleich, B., Wartzack, S., & Merklein, M.
(2021). Data-driven analysis of cold-formed pin structure characteristics in the
context of versatile joining processes. IOP Conference Series: Materials Science
and Engineering, 1157, 012077. https://doi.org/10.1088/1757-899X/1157/1/012077'
bibtex: '@article{Römisch_Zirngibl_Schleich_Wartzack_Merklein_2021, title={Data-driven
analysis of cold-formed pin structure characteristics in the context of versatile
joining processes}, volume={1157}, DOI={10.1088/1757-899X/1157/1/012077},
journal={IOP Conference Series: Materials Science and Engineering}, author={Römisch,
D. and Zirngibl, C. and Schleich, B. and Wartzack, S. and Merklein, M.}, year={2021},
pages={012077} }'
chicago: 'Römisch, D., C. Zirngibl, B. Schleich, S. Wartzack, and M. Merklein. “Data-Driven
Analysis of Cold-Formed Pin Structure Characteristics in the Context of Versatile
Joining Processes.” IOP Conference Series: Materials Science and Engineering
1157 (2021): 012077. https://doi.org/10.1088/1757-899X/1157/1/012077.'
ieee: 'D. Römisch, C. Zirngibl, B. Schleich, S. Wartzack, and M. Merklein, “Data-driven
analysis of cold-formed pin structure characteristics in the context of versatile
joining processes,” IOP Conference Series: Materials Science and Engineering,
vol. 1157, p. 012077, 2021, doi: 10.1088/1757-899X/1157/1/012077.'
mla: 'Römisch, D., et al. “Data-Driven Analysis of Cold-Formed Pin Structure Characteristics
in the Context of Versatile Joining Processes.” IOP Conference Series: Materials
Science and Engineering, vol. 1157, 2021, p. 012077, doi:10.1088/1757-899X/1157/1/012077.'
short: 'D. Römisch, C. Zirngibl, B. Schleich, S. Wartzack, M. Merklein, IOP Conference
Series: Materials Science and Engineering 1157 (2021) 012077.'
date_created: 2022-03-28T12:48:01Z
date_updated: 2022-03-29T15:45:44Z
doi: 10.1088/1757-899X/1157/1/012077
intvolume: ' 1157'
language:
- iso: eng
page: '012077'
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'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '145'
name: 'TRR 285 – C01: TRR 285 - Subproject C01'
publication: 'IOP Conference Series: Materials Science and Engineering'
status: public
title: Data-driven analysis of cold-formed pin structure characteristics in the context
of versatile joining processes
type: journal_article
user_id: '68518'
volume: 1157
year: '2021'
...
---
_id: '30653'
abstract:
- lang: eng
text: Continuous Fiber Reinforced Thermoplastic (CFRT) hybrid parts offer interesting
possibilities for lightweight application, which can exceed the capabilities of
mono material metal or CFRT parts. In this case, the joining technology oftentimes
is the limiting factor. This study investigates a joining operation with metal
pin structures which are additively manufactured via powder bed fusion featuring
different diameters and tip geometries, which are inserted into the locally infrared
heated CFRT part. The resulting fiber rearrangement is assessed using transmitted
light microscopy, confocal laser scanning microscopy as well as micro-computer-tomography.
It could be shown that for all assessed pin variants a similar distinct fiber
displacement can be seen and that the pin diameter has a significant effect on
the resulting fiber orientation with smaller pin diameters being advantageous
because of gentle fiber displacement and reduced undulation. The tip geometry
has only minor effect on the fiber orientation. Especially in the X/Y plane no
systematic influence of the tip geometry on the fiber displacement could be observed.
Based on the gained insights a three-stage model of the fiber orientation processes
is proposed.
author:
- first_name: J.
full_name: Popp, J.
last_name: Popp
- first_name: T.
full_name: Kleffel, T.
last_name: Kleffel
- first_name: D.
full_name: Römisch, D.
last_name: Römisch
- first_name: T.
full_name: Papke, T.
last_name: Papke
- first_name: M.
full_name: Merklein, M.
last_name: Merklein
- first_name: D.
full_name: Drummer, D.
last_name: Drummer
citation:
ama: Popp J, Kleffel T, Römisch D, Papke T, Merklein M, Drummer D. Fiber Orientation
Mechanism of Continuous Fiber Reinforced Thermoplastics Hybrid Parts Joined with
Metallic Pins. Applied Composite Materials. 2021;28:951–972. doi:10.1007/s10443-021-09892-0
apa: Popp, J., Kleffel, T., Römisch, D., Papke, T., Merklein, M., & Drummer,
D. (2021). Fiber Orientation Mechanism of Continuous Fiber Reinforced Thermoplastics
Hybrid Parts Joined with Metallic Pins. Applied Composite Materials, 28,
951–972. https://doi.org/10.1007/s10443-021-09892-0
bibtex: '@article{Popp_Kleffel_Römisch_Papke_Merklein_Drummer_2021, title={Fiber
Orientation Mechanism of Continuous Fiber Reinforced Thermoplastics Hybrid Parts
Joined with Metallic Pins}, volume={28}, DOI={10.1007/s10443-021-09892-0},
journal={Applied Composite Materials}, author={Popp, J. and Kleffel, T. and Römisch,
D. and Papke, T. and Merklein, M. and Drummer, D.}, year={2021}, pages={951–972}
}'
chicago: 'Popp, J., T. Kleffel, D. Römisch, T. Papke, M. Merklein, and D. Drummer.
“Fiber Orientation Mechanism of Continuous Fiber Reinforced Thermoplastics Hybrid
Parts Joined with Metallic Pins.” Applied Composite Materials 28 (2021):
951–972. https://doi.org/10.1007/s10443-021-09892-0.'
ieee: 'J. Popp, T. Kleffel, D. Römisch, T. Papke, M. Merklein, and D. Drummer, “Fiber
Orientation Mechanism of Continuous Fiber Reinforced Thermoplastics Hybrid Parts
Joined with Metallic Pins,” Applied Composite Materials, vol. 28, pp. 951–972,
2021, doi: 10.1007/s10443-021-09892-0.'
mla: Popp, J., et al. “Fiber Orientation Mechanism of Continuous Fiber Reinforced
Thermoplastics Hybrid Parts Joined with Metallic Pins.” Applied Composite Materials,
vol. 28, 2021, pp. 951–972, doi:10.1007/s10443-021-09892-0.
short: J. Popp, T. Kleffel, D. Römisch, T. Papke, M. Merklein, D. Drummer, Applied
Composite Materials 28 (2021) 951–972.
date_created: 2022-03-28T12:53:14Z
date_updated: 2022-03-29T15:50:53Z
doi: 10.1007/s10443-021-09892-0
intvolume: ' 28'
language:
- iso: eng
page: 951–972
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 Composite Materials
status: public
title: Fiber Orientation Mechanism of Continuous Fiber Reinforced Thermoplastics Hybrid
Parts Joined with Metallic Pins
type: journal_article
user_id: '68518'
volume: 28
year: '2021'
...
---
_id: '30701'
author:
- first_name: D.
full_name: Römisch, D.
last_name: Römisch
- first_name: J.
full_name: Popp, J.
last_name: Popp
- first_name: D.
full_name: Drummer, D.
last_name: Drummer
- first_name: M.
full_name: Merklein, M.
last_name: Merklein
citation:
ama: Römisch D, Popp J, Drummer D, Merklein M. Joining of CFRT-steel hybrid parts
via hole-forming and subsequent pin caulking. Production Engineering. Published
online 2021. doi:10.1007/s11740-021-01093-9
apa: Römisch, D., Popp, J., Drummer, D., & Merklein, M. (2021). Joining of CFRT-steel
hybrid parts via hole-forming and subsequent pin caulking. Production Engineering.
https://doi.org/10.1007/s11740-021-01093-9
bibtex: '@article{Römisch_Popp_Drummer_Merklein_2021, title={Joining of CFRT-steel
hybrid parts via hole-forming and subsequent pin caulking}, DOI={10.1007/s11740-021-01093-9},
journal={Production Engineering}, author={Römisch, D. and Popp, J. and Drummer,
D. and Merklein, M.}, year={2021} }'
chicago: Römisch, D., J. Popp, D. Drummer, and M. Merklein. “Joining of CFRT-Steel
Hybrid Parts via Hole-Forming and Subsequent Pin Caulking.” Production Engineering,
2021. https://doi.org/10.1007/s11740-021-01093-9.
ieee: 'D. Römisch, J. Popp, D. Drummer, and M. Merklein, “Joining of CFRT-steel
hybrid parts via hole-forming and subsequent pin caulking,” Production Engineering,
2021, doi: 10.1007/s11740-021-01093-9.'
mla: Römisch, D., et al. “Joining of CFRT-Steel Hybrid Parts via Hole-Forming and
Subsequent Pin Caulking.” Production Engineering, 2021, doi:10.1007/s11740-021-01093-9.
short: D. Römisch, J. Popp, D. Drummer, M. Merklein, Production Engineering (2021).
date_created: 2022-03-29T09:21:36Z
date_updated: 2023-01-02T11:20:14Z
department:
- _id: '630'
doi: 10.1007/s11740-021-01093-9
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: Production Engineering
status: public
title: Joining of CFRT-steel hybrid parts via hole-forming and subsequent pin caulking
type: journal_article
user_id: '14931'
year: '2021'
...
---
_id: '30684'
abstract:
- lang: eng
text: Due to stricter emission targets in the mobility sector and the resulting
trend towards lightweight construction in order to reduce weight and consequently
emissions, multi-material systems that allow a material to be placed in the right
quantity and in the right place are becoming increasingly important. One major
challenge that is holding back the rapid and widespread use of multi-material
systems is the lack of adequate joining processes that are suitable for joining
dissimilar materials. Joining processes without auxiliary elements have the advantage
of a reduced assembly effort and no additional added weight. Conventional joining
processes without auxiliary elements, such as welding, clinching, or the use of
adhesives, reach their limits due to different mechanical properties and chemical
incompatibilities. A process with potential in the field of joining dissimilar
materials is joining without an auxiliary element using pin structures. However,
current pin manufacturing processes are mostly time-consuming or can only be integrated
barely into existing industrial manufacturing processes due to their specific
properties. For this reason, the present work investigates the production of single-
and multi-pin structures from high-strength dual-phase steel HCT590X + Z (DP600,
t0 = 1.5 mm) by cold extrusion directly out of the sheet metal. These structures
are subsequently joined with an aluminium sheet (EN AW-6014-T4, t0 = 1.5 mm) by
direct pin pressing. For a quantitative evaluation of the joint quality, tensile
shear tests are carried out and the influence of different pin heights, pin number,
and pin arrangements, as well as different joining strategies on the joint strength
is experimentally evaluated. It is proven that a single pin structure with a diameter
of 1.5 mm and an average height of 1.86 mm achieves a maximum tensile shear force
of 1025 N. The results reveal that the formation of a form-fit during direct pin
pressing is essential for the joint strength. By increasing the number of pins,
a linear increase in force could be demonstrated, which is independent of the
arrangement of the pin structures.
author:
- first_name: D.
full_name: Römisch, D.
last_name: Römisch
- first_name: M.
full_name: Kraus, M.
last_name: Kraus
- first_name: M.
full_name: Merklein, M.
last_name: Merklein
citation:
ama: Römisch D, Kraus M, Merklein M. Experimental study on joining by forming of
hct590x + z and en-aw 6014 sheets using cold extruded pin structures. Journal
of Manufacturing and Materials Processing. 2021;5:25. doi:10.3390/jmmp5010025
apa: Römisch, D., Kraus, M., & Merklein, M. (2021). Experimental study on joining
by forming of hct590x + z and en-aw 6014 sheets using cold extruded pin structures.
Journal of Manufacturing and Materials Processing, 5, 25. https://doi.org/10.3390/jmmp5010025
bibtex: '@article{Römisch_Kraus_Merklein_2021, title={Experimental study on joining
by forming of hct590x + z and en-aw 6014 sheets using cold extruded pin structures},
volume={5}, DOI={10.3390/jmmp5010025},
journal={Journal of Manufacturing and Materials Processing}, author={Römisch,
D. and Kraus, M. and Merklein, M.}, year={2021}, pages={25} }'
chicago: 'Römisch, D., M. Kraus, and M. Merklein. “Experimental Study on Joining
by Forming of Hct590x + z and En-Aw 6014 Sheets Using Cold Extruded Pin Structures.”
Journal of Manufacturing and Materials Processing 5 (2021): 25. https://doi.org/10.3390/jmmp5010025.'
ieee: 'D. Römisch, M. Kraus, and M. Merklein, “Experimental study on joining by
forming of hct590x + z and en-aw 6014 sheets using cold extruded pin structures,”
Journal of Manufacturing and Materials Processing, vol. 5, p. 25, 2021,
doi: 10.3390/jmmp5010025.'
mla: Römisch, D., et al. “Experimental Study on Joining by Forming of Hct590x +
z and En-Aw 6014 Sheets Using Cold Extruded Pin Structures.” Journal of Manufacturing
and Materials Processing, vol. 5, 2021, p. 25, doi:10.3390/jmmp5010025.
short: D. Römisch, M. Kraus, M. Merklein, Journal of Manufacturing and Materials
Processing 5 (2021) 25.
date_created: 2022-03-29T08:48:14Z
date_updated: 2023-01-02T11:47:27Z
department:
- _id: '630'
doi: 10.3390/jmmp5010025
intvolume: ' 5'
language:
- iso: eng
page: '25'
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 Manufacturing and Materials Processing
status: public
title: Experimental study on joining by forming of hct590x + z and en-aw 6014 sheets
using cold extruded pin structures
type: journal_article
user_id: '14931'
volume: 5
year: '2021'
...
---
_id: '30682'
abstract:
- lang: eng
text: 'Lightweight constructions become more and more important, especially in the
mobility sector. In this industry, the increasingly strict regulations regarding
the emissions of carbon dioxide can be achieved to a certain extent by reducing
the vehicle weight. Thus, multi-material systems are used. Conventional joining
techniques reach their limits when joining different materials due to different
thermal expansion, unequal stiffness or chemical incompatibilities. This is why
additional joining elements or adhesives are used. These must be viewed critically
regarding a lightweight and resource-efficient production, since they add weight
or complicate the recycling process of these components. Consequently, there is
a great and growing need for new versatile joining technologies in order to overcome
these challenges and to be able to react to changing process parameters and boundary
conditions. Joining without an auxiliary element using pin structures formed directly
from the sheet metal plane is one approach to meet these challenges. These pin
structures are then joined by direct pressing into the joining partner. This is
possible with a variety of material combinations, but is advantageous with regard
to continuous fibre-reinforced thermoplastic composites (CFRTP), as the fibres
do not have to be cut when joining CFRTP using pin structures. In this paper,
the formability of pin structures made of a dual-phase steel DP600 (HCT590X +
Z) is investigated. The extruded pin structures are joined by direct pin pressing
with an EN AW-6014 to form tensile shear specimens. Different joining strategies
are investigated to compare their influence on the joint strength. The results
have shown that it is feasible to form suitable pins from a DP600 dual-phase steel
to produce reliable connections with an aluminium sheet joined by direct pin pressing. '
author:
- first_name: D.
full_name: Römisch, D.
last_name: Römisch
- first_name: M.
full_name: Kraus, M.
last_name: Kraus
- first_name: M.
full_name: Merklein, M.
last_name: Merklein
citation:
ama: Römisch D, Kraus M, Merklein M. Investigation of Different Joining by Forming
Strategies when Connecting Different Metals without Auxiliary Elements. Key
Engineering Materials. 2021;883:19-26. doi:10.4028/www.scientific.net/kem.883.19
apa: Römisch, D., Kraus, M., & Merklein, M. (2021). Investigation of Different
Joining by Forming Strategies when Connecting Different Metals without Auxiliary
Elements. Key Engineering Materials, 883, 19–26. https://doi.org/10.4028/www.scientific.net/kem.883.19
bibtex: '@article{Römisch_Kraus_Merklein_2021, title={Investigation of Different
Joining by Forming Strategies when Connecting Different Metals without Auxiliary
Elements}, volume={883}, DOI={10.4028/www.scientific.net/kem.883.19},
journal={Key Engineering Materials}, author={Römisch, D. and Kraus, M. and Merklein,
M.}, year={2021}, pages={19–26} }'
chicago: 'Römisch, D., M. Kraus, and M. Merklein. “Investigation of Different Joining
by Forming Strategies When Connecting Different Metals without Auxiliary Elements.”
Key Engineering Materials 883 (2021): 19–26. https://doi.org/10.4028/www.scientific.net/kem.883.19.'
ieee: 'D. Römisch, M. Kraus, and M. Merklein, “Investigation of Different Joining
by Forming Strategies when Connecting Different Metals without Auxiliary Elements,”
Key Engineering Materials, vol. 883, pp. 19–26, 2021, doi: 10.4028/www.scientific.net/kem.883.19.'
mla: Römisch, D., et al. “Investigation of Different Joining by Forming Strategies
When Connecting Different Metals without Auxiliary Elements.” Key Engineering
Materials, vol. 883, 2021, pp. 19–26, doi:10.4028/www.scientific.net/kem.883.19.
short: D. Römisch, M. Kraus, M. Merklein, Key Engineering Materials 883 (2021) 19–26.
date_created: 2022-03-29T08:45:16Z
date_updated: 2023-01-02T11:47:47Z
department:
- _id: '630'
doi: 10.4028/www.scientific.net/kem.883.19
intvolume: ' 883'
language:
- iso: eng
page: 19-26
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: Key Engineering Materials
status: public
title: Investigation of Different Joining by Forming Strategies when Connecting Different
Metals without Auxiliary Elements
type: journal_article
user_id: '14931'
volume: 883
year: '2021'
...
---
_id: '38517'
author:
- first_name: Julian
full_name: Popp, Julian
last_name: Popp
- first_name: Tobias
full_name: Kleffel, Tobias
last_name: Kleffel
- first_name: Dietmar
full_name: Drummer, Dietmar
last_name: Drummer
citation:
ama: Popp J, Kleffel T, Drummer D. Influence of pin geometry on the joint strength
of CFRT-metal hybrid parts with metallic pins. Joining Plastics. 2021;15(3-4).
apa: Popp, J., Kleffel, T., & Drummer, D. (2021). Influence of pin geometry
on the joint strength of CFRT-metal hybrid parts with metallic pins. Joining
Plastics, 15(3–4).
bibtex: '@article{Popp_Kleffel_Drummer_2021, title={Influence of pin geometry on
the joint strength of CFRT-metal hybrid parts with metallic pins}, volume={15},
number={3–4}, journal={Joining Plastics}, author={Popp, Julian and Kleffel, Tobias
and Drummer, Dietmar}, year={2021} }'
chicago: Popp, Julian, Tobias Kleffel, and Dietmar Drummer. “Influence of Pin Geometry
on the Joint Strength of CFRT-Metal Hybrid Parts with Metallic Pins.” Joining
Plastics 15, no. 3–4 (2021).
ieee: J. Popp, T. Kleffel, and D. Drummer, “Influence of pin geometry on the joint
strength of CFRT-metal hybrid parts with metallic pins,” Joining Plastics,
vol. 15, no. 3–4, 2021.
mla: Popp, Julian, et al. “Influence of Pin Geometry on the Joint Strength of CFRT-Metal
Hybrid Parts with Metallic Pins.” Joining Plastics, vol. 15, no. 3–4, 2021.
short: J. Popp, T. Kleffel, D. Drummer, Joining Plastics 15 (2021).
date_created: 2023-01-23T20:31:42Z
date_updated: 2023-01-23T20:36:47Z
department:
- _id: '630'
intvolume: ' 15'
issue: 3-4
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: Joining Plastics
status: public
title: Influence of pin geometry on the joint strength of CFRT-metal hybrid parts
with metallic pins
type: journal_article
user_id: '7850'
volume: 15
year: '2021'
...
---
_id: '30703'
author:
- first_name: M.
full_name: Kraus, M.
last_name: Kraus
- first_name: M.
full_name: Merklein, M.
last_name: Merklein
citation:
ama: Kraus M, Merklein M. Potential of Joining Dissimilar Materials by Cold Formed
Pin-Structures. Journal of Materials Processing Technology. 2020;283:116697.
doi:10.1016/j.jmatprotec.2020.116697
apa: Kraus, M., & Merklein, M. (2020). Potential of Joining Dissimilar Materials
by Cold Formed Pin-Structures. Journal of Materials Processing Technology,
283, 116697. https://doi.org/10.1016/j.jmatprotec.2020.116697
bibtex: '@article{Kraus_Merklein_2020, title={Potential of Joining Dissimilar Materials
by Cold Formed Pin-Structures}, volume={283}, DOI={10.1016/j.jmatprotec.2020.116697},
journal={Journal of Materials Processing Technology}, author={Kraus, M. and Merklein,
M.}, year={2020}, pages={116697} }'
chicago: 'Kraus, M., and M. Merklein. “Potential of Joining Dissimilar Materials
by Cold Formed Pin-Structures.” Journal of Materials Processing Technology
283 (2020): 116697. https://doi.org/10.1016/j.jmatprotec.2020.116697.'
ieee: 'M. Kraus and M. Merklein, “Potential of Joining Dissimilar Materials by Cold
Formed Pin-Structures,” Journal of Materials Processing Technology, vol.
283, p. 116697, 2020, doi: 10.1016/j.jmatprotec.2020.116697.'
mla: Kraus, M., and M. Merklein. “Potential of Joining Dissimilar Materials by Cold
Formed Pin-Structures.” Journal of Materials Processing Technology, vol.
283, 2020, p. 116697, doi:10.1016/j.jmatprotec.2020.116697.
short: M. Kraus, M. Merklein, Journal of Materials Processing Technology 283 (2020)
116697.
date_created: 2022-03-29T09:23:52Z
date_updated: 2023-01-02T11:57:58Z
department:
- _id: '630'
doi: 10.1016/j.jmatprotec.2020.116697
intvolume: ' 283'
language:
- iso: eng
page: '116697'
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 Materials Processing Technology
status: public
title: Potential of Joining Dissimilar Materials by Cold Formed Pin-Structures
type: journal_article
user_id: '14931'
volume: 283
year: '2020'
...