---
_id: '46752'
abstract:
- lang: eng
text: Due to current global challenges regarding energy security as well as climate
change the importance of preserving the nature and all available resources is
steadily increasing. In order to achieve the energy-saving and climate targets,
it is not only necessary to develop new processes and processing possibilities,
but also to optimise known process chains with regard to energy and resource efficiency
in the area of production technology. Here, the recycling of supposed production
waste represents an opportunity to save energy. In addition to the conventional
and smelting metallurgical recycling process, extensive research activities have
therefore been carried out for alternative solid-state recycling processes. One
example is the friction-induced recycling process, which has been used in past
studies to demonstrate the energy- and resource-efficient production of semi-finished
products from aluminium scrap such as chips. In addition, properties like chemical
composition and strength can be adjusted locally and in terms of processing time.
This can be used to improve the versatility of further processing steps.
author:
- first_name: Thomas
full_name: Borgert, Thomas
id: '83141'
last_name: Borgert
- first_name: Werner
full_name: Homberg, Werner
id: '233'
last_name: Homberg
citation:
ama: 'Borgert T, Homberg W. Friction-Induced Recycled Aluminium Semi-finished Products
in Thermo-mechanical Joining Technology. In: Lecture Notes in Mechanical Engineering.
Springer Nature Switzerland; 2023. doi:10.1007/978-3-031-41341-4_1'
apa: Borgert, T., & Homberg, W. (2023). Friction-Induced Recycled Aluminium
Semi-finished Products in Thermo-mechanical Joining Technology. In Lecture
Notes in Mechanical Engineering. Springer Nature Switzerland. https://doi.org/10.1007/978-3-031-41341-4_1
bibtex: '@inbook{Borgert_Homberg_2023, place={Cham}, title={Friction-Induced Recycled
Aluminium Semi-finished Products in Thermo-mechanical Joining Technology}, DOI={10.1007/978-3-031-41341-4_1},
booktitle={Lecture Notes in Mechanical Engineering}, publisher={Springer Nature
Switzerland}, author={Borgert, Thomas and Homberg, Werner}, year={2023} }'
chicago: 'Borgert, Thomas, and Werner Homberg. “Friction-Induced Recycled Aluminium
Semi-Finished Products in Thermo-Mechanical Joining Technology.” In Lecture
Notes in Mechanical Engineering. Cham: Springer Nature Switzerland, 2023.
https://doi.org/10.1007/978-3-031-41341-4_1.'
ieee: 'T. Borgert and W. Homberg, “Friction-Induced Recycled Aluminium Semi-finished
Products in Thermo-mechanical Joining Technology,” in Lecture Notes in Mechanical
Engineering, Cham: Springer Nature Switzerland, 2023.'
mla: Borgert, Thomas, and Werner Homberg. “Friction-Induced Recycled Aluminium Semi-Finished
Products in Thermo-Mechanical Joining Technology.” Lecture Notes in Mechanical
Engineering, Springer Nature Switzerland, 2023, doi:10.1007/978-3-031-41341-4_1.
short: 'T. Borgert, W. Homberg, in: Lecture Notes in Mechanical Engineering, Springer
Nature Switzerland, Cham, 2023.'
date_created: 2023-08-29T06:52:56Z
date_updated: 2026-05-12T11:58:00Z
department:
- _id: '156'
doi: 10.1007/978-3-031-41341-4_1
language:
- iso: eng
place: Cham
project:
- _id: '147'
name: 'TRR 285 – C03: TRR 285 - Subproject C03'
- _id: '133'
name: TRR 285 - Project Area C
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: Lecture Notes in Mechanical Engineering
publication_identifier:
isbn:
- '9783031413407'
- '9783031413414'
issn:
- 2195-4356
- 2195-4364
publication_status: published
publisher: Springer Nature Switzerland
quality_controlled: '1'
status: public
title: Friction-Induced Recycled Aluminium Semi-finished Products in Thermo-mechanical
Joining Technology
type: book_chapter
user_id: '7850'
year: '2023'
...
---
_id: '47535'
abstract:
- lang: eng
text: Consistent lightweight construction in the area of vehicle manufacturing requires
the increased use of multi-material combinations. This, in turn, requires an adaptation
of standard joining techniques. In multi-material combinations, the importance
of integral cast components, in particular, is increasing and poses additional
technical challenges for the industry. One approach to solve these challenges
is adaptable joining elements manufactured by a thermomechanical forming process.
By applying an incremental and thermomechanical joining process, it is possible
to react immediately and adapt the joining process inline to reduce the number
of different joining elements. In the investigation described in this publication,
cast plates made of the cast aluminium alloy EN AC-AlSi9 serve as joining partners,
which are processed by sand casting. The joining process of hypoeutectic AlSi
alloys is challenging as their brittle character leads to cracks in the joint
during conventional mechanical joining. To solve this, the frictional heat of
the novel joining process applied can provide a finer microstructure in the hypoeutectic
AlSi9 cast alloy. In detail, its Si is finer-grained, resulting in higher ductility
of the joint. This study reveals the thermomechanical joining suitability of a
hypoeutectic cast aluminium alloy in combination with adaptively manufactured
auxiliary joining elements.
article_number: '169'
article_type: original
author:
- first_name: Thomas
full_name: Borgert, Thomas
id: '83141'
last_name: Borgert
- first_name: Moritz
full_name: Neuser, Moritz
id: '32340'
last_name: Neuser
- first_name: Kay-Peter
full_name: Hoyer, Kay-Peter
id: '48411'
last_name: Hoyer
- first_name: Werner
full_name: Homberg, Werner
id: '233'
last_name: Homberg
- first_name: Mirko
full_name: Schaper, Mirko
id: '43720'
last_name: Schaper
citation:
ama: Borgert T, Neuser M, Hoyer K-P, Homberg W, Schaper M. Thermomechanical Joining
of Hypoeutectic Aluminium Cast Plates. Journal of Manufacturing and Materials
Processing. 2023;7(5). doi:10.3390/jmmp7050169
apa: Borgert, T., Neuser, M., Hoyer, K.-P., Homberg, W., & Schaper, M. (2023).
Thermomechanical Joining of Hypoeutectic Aluminium Cast Plates. Journal of
Manufacturing and Materials Processing, 7(5), Article 169. https://doi.org/10.3390/jmmp7050169
bibtex: '@article{Borgert_Neuser_Hoyer_Homberg_Schaper_2023, title={Thermomechanical
Joining of Hypoeutectic Aluminium Cast Plates}, volume={7}, DOI={10.3390/jmmp7050169},
number={5169}, journal={Journal of Manufacturing and Materials Processing}, publisher={MDPI
AG}, author={Borgert, Thomas and Neuser, Moritz and Hoyer, Kay-Peter and Homberg,
Werner and Schaper, Mirko}, year={2023} }'
chicago: Borgert, Thomas, Moritz Neuser, Kay-Peter Hoyer, Werner Homberg, and Mirko
Schaper. “Thermomechanical Joining of Hypoeutectic Aluminium Cast Plates.” Journal
of Manufacturing and Materials Processing 7, no. 5 (2023). https://doi.org/10.3390/jmmp7050169.
ieee: 'T. Borgert, M. Neuser, K.-P. Hoyer, W. Homberg, and M. Schaper, “Thermomechanical
Joining of Hypoeutectic Aluminium Cast Plates,” Journal of Manufacturing and
Materials Processing, vol. 7, no. 5, Art. no. 169, 2023, doi: 10.3390/jmmp7050169.'
mla: Borgert, Thomas, et al. “Thermomechanical Joining of Hypoeutectic Aluminium
Cast Plates.” Journal of Manufacturing and Materials Processing, vol. 7,
no. 5, 169, MDPI AG, 2023, doi:10.3390/jmmp7050169.
short: T. Borgert, M. Neuser, K.-P. Hoyer, W. Homberg, M. Schaper, Journal of Manufacturing
and Materials Processing 7 (2023).
date_created: 2023-10-02T06:46:53Z
date_updated: 2026-05-12T12:00:54Z
department:
- _id: '156'
- _id: '158'
doi: 10.3390/jmmp7050169
intvolume: ' 7'
issue: '5'
keyword:
- Industrial and Manufacturing Engineering
- Mechanical Engineering
- Mechanics of Materials
language:
- iso: eng
project:
- _id: '147'
name: 'TRR 285 – C03: TRR 285 - Subproject C03'
- _id: '136'
name: 'TRR 285 – A02: TRR 285 - Subproject A02'
- _id: '133'
name: TRR 285 - Project Area C
- _id: '131'
name: TRR 285 - Project Area A
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: Journal of Manufacturing and Materials Processing
publication_identifier:
issn:
- 2504-4494
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Thermomechanical Joining of Hypoeutectic Aluminium Cast Plates
type: journal_article
user_id: '7850'
volume: 7
year: '2023'
...
---
_id: '43031'
abstract:
- lang: eng
text: Requirements of multi-material construction involve adjustments to standard
joining techniques. Especially the growing importance of integral cast components
poses additional engineering challenges for the industry. One approach to achieve
these goals are adaptable joining elements formed by friction spinning. This approach
uses friction-induced heat to form customisable joining elements to join sheets
for different boundary conditions, even for brittle cast materials. It is possible
to react immediately to adapt to the joining process inline and reduce the amount
of different joining elements. As the joining partner serve casting plates of
the aluminium casting alloy EN AC–AlSi9, which is processed in the sand casting.
Joining hypoeutectic AlSi alloys constitutes a challenge because the brittle character
of these cause cracks in the joint during conventional mechanical joining. Furthermore,
the friction-induced heat of the novel joining process causes a finer microstructure
in the hypoeutectic AlSi9 casting alloy. In particular, the eutectic Si is more
fine-grained, resulting in higher joint ductility. This study indicates the joining
suitability of a hypoeutectic aluminium casting alloy in combination with adaptive
manufactured additional joining elements. Here, various mechanical and microstructural
investigations validate the influence of the thermomechanical joining technique.
In conclusion, the potential of this joining process is presented regarding the
joinability of cast aluminium components.
author:
- first_name: Thomas
full_name: Borgert, Thomas
id: '83141'
last_name: Borgert
- first_name: Moritz
full_name: Neuser, Moritz
id: '32340'
last_name: Neuser
- first_name: Eugen
full_name: Wiens, Eugen
id: '7888'
last_name: Wiens
- first_name: Olexandr
full_name: Grydin, Olexandr
id: '43822'
last_name: Grydin
- first_name: Werner
full_name: Homberg, Werner
id: '233'
last_name: Homberg
- first_name: Mirko
full_name: Schaper, Mirko
id: '43720'
last_name: Schaper
citation:
ama: 'Borgert T, Neuser M, Wiens E, Grydin O, Homberg W, Schaper M. Influence of
thermo-mechanical joining process on the microstructure of a hypoeutectic aluminium
cast alloy. In: Materials Research Proceedings. Vol 25. Materials Research
Forum LLC; 2023:187-194. doi:10.21741/9781644902417-24'
apa: Borgert, T., Neuser, M., Wiens, E., Grydin, O., Homberg, W., & Schaper,
M. (2023). Influence of thermo-mechanical joining process on the microstructure
of a hypoeutectic aluminium cast alloy. Materials Research Proceedings,
25, 187–194. https://doi.org/10.21741/9781644902417-24
bibtex: '@inproceedings{Borgert_Neuser_Wiens_Grydin_Homberg_Schaper_2023, title={Influence
of thermo-mechanical joining process on the microstructure of a hypoeutectic aluminium
cast alloy}, volume={25}, DOI={10.21741/9781644902417-24},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Borgert, Thomas and Neuser, Moritz and Wiens, Eugen and Grydin,
Olexandr and Homberg, Werner and Schaper, Mirko}, year={2023}, pages={187–194}
}'
chicago: Borgert, Thomas, Moritz Neuser, Eugen Wiens, Olexandr Grydin, Werner Homberg,
and Mirko Schaper. “Influence of Thermo-Mechanical Joining Process on the Microstructure
of a Hypoeutectic Aluminium Cast Alloy.” In Materials Research Proceedings,
25:187–94. Materials Research Forum LLC, 2023. https://doi.org/10.21741/9781644902417-24.
ieee: 'T. Borgert, M. Neuser, E. Wiens, O. Grydin, W. Homberg, and M. Schaper, “Influence
of thermo-mechanical joining process on the microstructure of a hypoeutectic aluminium
cast alloy,” in Materials Research Proceedings, Nürnberg, 2023, vol. 25,
pp. 187–194, doi: 10.21741/9781644902417-24.'
mla: Borgert, Thomas, et al. “Influence of Thermo-Mechanical Joining Process on
the Microstructure of a Hypoeutectic Aluminium Cast Alloy.” Materials Research
Proceedings, vol. 25, Materials Research Forum LLC, 2023, pp. 187–94, doi:10.21741/9781644902417-24.
short: 'T. Borgert, M. Neuser, E. Wiens, O. Grydin, W. Homberg, M. Schaper, in:
Materials Research Proceedings, Materials Research Forum LLC, 2023, pp. 187–194.'
conference:
end_date: 05.04.2023
location: Nürnberg
name: 20th International Conference on Sheet Metal
start_date: 02.04.2023
date_created: 2023-03-16T14:59:01Z
date_updated: 2026-05-12T13:53:46Z
department:
- _id: '156'
- _id: '158'
doi: 10.21741/9781644902417-24
intvolume: ' 25'
language:
- iso: eng
page: 187-194
project:
- _id: '147'
name: 'TRR 285 – C03: TRR 285 - Subproject C03'
- _id: '136'
name: 'TRR 285 – A02: TRR 285 - Subproject A02'
- _id: '133'
name: TRR 285 - Project Area C
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '131'
name: TRR 285 - Project Area A
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
status: public
title: Influence of thermo-mechanical joining process on the microstructure of a hypoeutectic
aluminium cast alloy
type: conference
user_id: '7850'
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: '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: '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: '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: '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: '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: '34214'
abstract:
- lang: eng
text: This article presents the application and evaluation of a cantilever with
integrated sensing and actuation as part of an atomic force microscope (AFM) with
an adjustable probe direction, which is integrated into a nano measuring machine
(NMM-1). The AFM, which is operated in closed-loop intermittent contact mode,
is based on two rotational axes that enable the adjustment of the probe direction
to cover a complete hemisphere. The axes greatly enlarge the metrology frame of
the measuring system by materials with a comparatively high coefficient of thermal
expansion, which ultimately limits the achievable measurement uncertainty of the
measuring system. Thus, to reduce the thermal sensitivity of the system, the redesign
of the rotational kinematics is mandatory. However, in this article, some preliminary
investigations on the application of a self-sensing cantilever with an integrated
micro heater for its stimulation will be presented. In previous investigations,
a piezoelectric actuator has been applied to stimulate the cantilever. However,
the removal of the piezoelectric actuator, which is enabled by the application
of a cantilever with an integrated micro heater, promises an essential simplification
of the sensor holder. Thus, in the future it might be possible to use materials
with a low coefficient of thermal expansion, which are often difficult to machine
and therefore only allow for rather simple geometries. Furthermore, because of
the creepage of piezoelectric actuators, their removal from the metrology frame
might lead to improved metrological characteristics. As will be shown, there are
no significant differences between the two modes of actuation. Therefore, the
redesigned rotational system will be based on the cantilever with integrated sensing
and actuation.
author:
- first_name: Janik
full_name: Schaude, Janik
last_name: Schaude
- first_name: Tino
full_name: Hausotte, Tino
last_name: Hausotte
citation:
ama: Schaude J, Hausotte T. Atomic Force Microscope with an Adjustable Probe Direction
and Integrated Sensing and Actuation. Nanomanufacturing and Metrology.
2022;5(2):139-148. doi:10.1007/s41871-022-00143-9
apa: Schaude, J., & Hausotte, T. (2022). Atomic Force Microscope with an Adjustable
Probe Direction and Integrated Sensing and Actuation. Nanomanufacturing and
Metrology, 5(2), 139–148. https://doi.org/10.1007/s41871-022-00143-9
bibtex: '@article{Schaude_Hausotte_2022, title={Atomic Force Microscope with an
Adjustable Probe Direction and Integrated Sensing and Actuation}, volume={5},
DOI={10.1007/s41871-022-00143-9},
number={2}, journal={Nanomanufacturing and Metrology}, publisher={Springer Science
and Business Media LLC}, author={Schaude, Janik and Hausotte, Tino}, year={2022},
pages={139–148} }'
chicago: 'Schaude, Janik, and Tino Hausotte. “Atomic Force Microscope with an Adjustable
Probe Direction and Integrated Sensing and Actuation.” Nanomanufacturing and
Metrology 5, no. 2 (2022): 139–48. https://doi.org/10.1007/s41871-022-00143-9.'
ieee: 'J. Schaude and T. Hausotte, “Atomic Force Microscope with an Adjustable Probe
Direction and Integrated Sensing and Actuation,” Nanomanufacturing and Metrology,
vol. 5, no. 2, pp. 139–148, 2022, doi: 10.1007/s41871-022-00143-9.'
mla: Schaude, Janik, and Tino Hausotte. “Atomic Force Microscope with an Adjustable
Probe Direction and Integrated Sensing and Actuation.” Nanomanufacturing and
Metrology, vol. 5, no. 2, Springer Science and Business Media LLC, 2022, pp.
139–48, doi:10.1007/s41871-022-00143-9.
short: J. Schaude, T. Hausotte, Nanomanufacturing and Metrology 5 (2022) 139–148.
date_created: 2022-12-05T21:15:09Z
date_updated: 2023-01-02T11:10:08Z
department:
- _id: '630'
doi: 10.1007/s41871-022-00143-9
intvolume: ' 5'
issue: '2'
keyword:
- Industrial and Manufacturing Engineering
- Mechanical Engineering
- Materials Science (miscellaneous)
language:
- iso: eng
page: 139-148
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: Nanomanufacturing and Metrology
publication_identifier:
issn:
- 2520-811X
- 2520-8128
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Atomic Force Microscope with an Adjustable Probe Direction and Integrated Sensing
and Actuation
type: journal_article
user_id: '14931'
volume: 5
year: '2022'
...
---
_id: '34280'
abstract:
- lang: eng
text: Clinching is a cost efficient method for joining components in series production.
To assure the clinch point’s quality, the force displacement curve during clinching
or the bottom thickness are monitored. The most significant geometrical characteristics
of the clinch point, neck thickness and undercut, are usually tested destructively
by microsectioning. However, micrograph preparation goes ahead with a resetting
of elastic deformations and crack-closing after unloading. To generate a comprehensive
knowledge of the clinch point’s inner geometry under load, in-situ computed tomography
(CT) and acoustic testing (TDA) can be combined. While the TDA is highly sensitive
to the inner state of the clinch point, it could detect critical events like crack
development during loading. If such events are indicated, the loading process
is stopped and a stepped in-situ CT of the following crack and deformation development
is performed. In this paper, the concept is applied to the process of clinching
itself, providing a detailed three-dimensional insight in the development of the
joining zone. A test set-up is used which allows a stepwise clinching of two aluminium
sheets EN AW 6014. Furthermore, this set-up is positioned within a CT system.
In order to minimize X-ray absorption, a beryllium cylinder is used within the
set-up frame and clinching tools are made from Si3N4. The actuator and sensor
necessary for the TDA are integrated in the set-up. In regular process steps,
the clinching process is interrupted in order to perform a TDA and a CT scan.
In order to enhance the visibility of the interface, a thin tin layer is positioned
between the sheets prior clinching. It is shown, that the test-set up allows a
monitoring of the dynamic behaviour of the specimen during clinching while the
CT scans visualize the inner geometry and material flow non-destructively.
author:
- first_name: Daniel
full_name: Köhler, Daniel
last_name: Köhler
- first_name: Richard
full_name: Stephan, Richard
last_name: Stephan
- first_name: Robert
full_name: Kupfer, Robert
last_name: Kupfer
- first_name: Juliane
full_name: Troschitz, Juliane
last_name: Troschitz
- first_name: Alexander
full_name: Brosius, Alexander
last_name: Brosius
- first_name: Maik
full_name: Gude, Maik
last_name: Gude
citation:
ama: 'Köhler D, Stephan R, Kupfer R, Troschitz J, Brosius A, Gude M. Investigations
on Combined in situ CT and Acoustic Analysis during Clinching. In: Key Engineering
Materials. Vol 926. Trans Tech Publications, Ltd.; 2022:1489-1497. doi:10.4028/p-32330d'
apa: Köhler, D., Stephan, R., Kupfer, R., Troschitz, J., Brosius, A., & Gude,
M. (2022). Investigations on Combined in situ CT and Acoustic Analysis during
Clinching. Key Engineering Materials, 926, 1489–1497. https://doi.org/10.4028/p-32330d
bibtex: '@inproceedings{Köhler_Stephan_Kupfer_Troschitz_Brosius_Gude_2022, title={Investigations
on Combined in situ CT and Acoustic Analysis during Clinching}, volume={926},
DOI={10.4028/p-32330d}, booktitle={Key
Engineering Materials}, publisher={Trans Tech Publications, Ltd.}, author={Köhler,
Daniel and Stephan, Richard and Kupfer, Robert and Troschitz, Juliane and Brosius,
Alexander and Gude, Maik}, year={2022}, pages={1489–1497} }'
chicago: Köhler, Daniel, Richard Stephan, Robert Kupfer, Juliane Troschitz, Alexander
Brosius, and Maik Gude. “Investigations on Combined in Situ CT and Acoustic Analysis
during Clinching.” In Key Engineering Materials, 926:1489–97. Trans Tech
Publications, Ltd., 2022. https://doi.org/10.4028/p-32330d.
ieee: 'D. Köhler, R. Stephan, R. Kupfer, J. Troschitz, A. Brosius, and M. Gude,
“Investigations on Combined in situ CT and Acoustic Analysis during Clinching,”
in Key Engineering Materials, 2022, vol. 926, pp. 1489–1497, doi: 10.4028/p-32330d.'
mla: Köhler, Daniel, et al. “Investigations on Combined in Situ CT and Acoustic
Analysis during Clinching.” Key Engineering Materials, vol. 926, Trans
Tech Publications, Ltd., 2022, pp. 1489–97, doi:10.4028/p-32330d.
short: 'D. Köhler, R. Stephan, R. Kupfer, J. Troschitz, A. Brosius, M. Gude, in:
Key Engineering Materials, Trans Tech Publications, Ltd., 2022, pp. 1489–1497.'
date_created: 2022-12-07T16:38:44Z
date_updated: 2023-01-02T11:13:59Z
department:
- _id: '630'
doi: 10.4028/p-32330d
intvolume: ' 926'
keyword:
- Mechanical Engineering
- Mechanics of Materials
- General Materials Science
language:
- iso: eng
page: 1489-1497
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: Key Engineering Materials
publication_identifier:
issn:
- 1662-9795
publication_status: published
publisher: Trans Tech Publications, Ltd.
status: public
title: Investigations on Combined in situ CT and Acoustic Analysis during Clinching
type: conference
user_id: '14931'
volume: 926
year: '2022'
...
---
_id: '36462'
abstract:
- lang: eng
text: The conduction of structure-borne sound through joints causes energy dissipation.
The sound reduction index describes this energy loss as a level decrease in the
particle velocity across series-connected damping elements for which the superposition
principle applies. This simple model can help to develop a testing method for
joints based on this characteristic energy loss. In this paper, this model is
experimentally evaluated for multiple in-series clinched aluminium sheets. Samples
connected by several clinch points arranged in parallel are investigated experimentally,
and the results are discussed.
author:
- first_name: Richard
full_name: Stephan, Richard
last_name: Stephan
- first_name: Alexander
full_name: Brosius, Alexander
last_name: Brosius
citation:
ama: 'Stephan R, Brosius A. Experimental Measurement Method and Evaluation of an
Analytical Approach for Sound Conduction through Multiple Clinched Sheets. In:
The 28th Saxon Conference on Forming Technology SFU and the 7th International
Conference on Accuracy in Forming Technology ICAFT. MDPI; 2022. doi:10.3390/engproc2022026025'
apa: Stephan, R., & Brosius, A. (2022). Experimental Measurement Method and
Evaluation of an Analytical Approach for Sound Conduction through Multiple Clinched
Sheets. The 28th Saxon Conference on Forming Technology SFU and the 7th International
Conference on Accuracy in Forming Technology ICAFT. https://doi.org/10.3390/engproc2022026025
bibtex: '@inproceedings{Stephan_Brosius_2022, title={Experimental Measurement Method
and Evaluation of an Analytical Approach for Sound Conduction through Multiple
Clinched Sheets}, DOI={10.3390/engproc2022026025},
booktitle={The 28th Saxon Conference on Forming Technology SFU and the 7th International
Conference on Accuracy in Forming Technology ICAFT}, publisher={MDPI}, author={Stephan,
Richard and Brosius, Alexander}, year={2022} }'
chicago: Stephan, Richard, and Alexander Brosius. “Experimental Measurement Method
and Evaluation of an Analytical Approach for Sound Conduction through Multiple
Clinched Sheets.” In The 28th Saxon Conference on Forming Technology SFU and
the 7th International Conference on Accuracy in Forming Technology ICAFT.
MDPI, 2022. https://doi.org/10.3390/engproc2022026025.
ieee: 'R. Stephan and A. Brosius, “Experimental Measurement Method and Evaluation
of an Analytical Approach for Sound Conduction through Multiple Clinched Sheets,”
2022, doi: 10.3390/engproc2022026025.'
mla: Stephan, Richard, and Alexander Brosius. “Experimental Measurement Method and
Evaluation of an Analytical Approach for Sound Conduction through Multiple Clinched
Sheets.” The 28th Saxon Conference on Forming Technology SFU and the 7th International
Conference on Accuracy in Forming Technology ICAFT, MDPI, 2022, doi:10.3390/engproc2022026025.
short: 'R. Stephan, A. Brosius, in: The 28th Saxon Conference on Forming Technology
SFU and the 7th International Conference on Accuracy in Forming Technology ICAFT,
MDPI, 2022.'
date_created: 2023-01-12T13:55:07Z
date_updated: 2023-01-12T13:58:49Z
department:
- _id: '630'
doi: 10.3390/engproc2022026025
keyword:
- clinching
- mechanical joining
- damping
- model
- evaluation
- dynamics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.mdpi.com/2673-4591/26/1/25
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: '148'
name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: The 28th Saxon Conference on Forming Technology SFU and the 7th International
Conference on Accuracy in Forming Technology ICAFT
publication_status: published
publisher: MDPI
status: public
title: Experimental Measurement Method and Evaluation of an Analytical Approach for
Sound Conduction through Multiple Clinched Sheets
type: conference
user_id: '7850'
year: '2022'
...