---
_id: '30652'
abstract:
- lang: eng
text: Clinching continuous fibre reinforced thermoplastic composites and metals
is challenging due to the low ductility of the composite material. Therefore,
a number of novel clinching technologies has been developed specifically for these
material combinations. A systematic overview of these advanced clinching methods
is given in the present paper. With a focus on process design, three selected
clinching methods suitable for different joining tasks are described in detail.
The clinching processes including equipment and tools, observed process phenomena
and the resultant material structure are compared. Process phenomena during joining
are explained in general and compared using computed tomography and micrograph
images for each process. In addition the load bearing behaviour and the corresponding
failure mechanisms are investigated by means of single-lap shear tests. Finally,
the new joining technologies are discussed regarding application relevant criteria.
author:
- first_name: B.
full_name: Gröger, B.
last_name: Gröger
- first_name: J.
full_name: Troschitz, J.
last_name: Troschitz
- first_name: J.
full_name: Vorderbrüggen, J.
last_name: Vorderbrüggen
- first_name: C.
full_name: Vogel, C.
last_name: Vogel
- first_name: R.
full_name: Kupfer, R.
last_name: Kupfer
- first_name: G.
full_name: Meschut, G.
last_name: Meschut
- first_name: M.
full_name: Gude, M.
last_name: Gude
citation:
ama: Gröger B, Troschitz J, Vorderbrüggen J, et al. Clinching of Thermoplastic Composites
and Metals—A Comparison of Three Novel Joining Technologies. Materials.
2021;14:2286. doi:10.3390/ma14092286X
apa: Gröger, B., Troschitz, J., Vorderbrüggen, J., Vogel, C., Kupfer, R., Meschut,
G., & Gude, M. (2021). Clinching of Thermoplastic Composites and Metals—A
Comparison of Three Novel Joining Technologies. Materials, 14, 2286.
https://doi.org/10.3390/ma14092286X
bibtex: '@article{Gröger_Troschitz_Vorderbrüggen_Vogel_Kupfer_Meschut_Gude_2021,
title={Clinching of Thermoplastic Composites and Metals—A Comparison of Three
Novel Joining Technologies}, volume={14}, DOI={10.3390/ma14092286X},
journal={Materials}, author={Gröger, B. and Troschitz, J. and Vorderbrüggen, J.
and Vogel, C. and Kupfer, R. and Meschut, G. and Gude, M.}, year={2021}, pages={2286}
}'
chicago: 'Gröger, B., J. Troschitz, J. Vorderbrüggen, C. Vogel, R. Kupfer, G. Meschut,
and M. Gude. “Clinching of Thermoplastic Composites and Metals—A Comparison of
Three Novel Joining Technologies.” Materials 14 (2021): 2286. https://doi.org/10.3390/ma14092286X.'
ieee: 'B. Gröger et al., “Clinching of Thermoplastic Composites and Metals—A
Comparison of Three Novel Joining Technologies,” Materials, vol. 14, p.
2286, 2021, doi: 10.3390/ma14092286X.'
mla: Gröger, B., et al. “Clinching of Thermoplastic Composites and Metals—A Comparison
of Three Novel Joining Technologies.” Materials, vol. 14, 2021, p. 2286,
doi:10.3390/ma14092286X.
short: B. Gröger, J. Troschitz, J. Vorderbrüggen, C. Vogel, R. Kupfer, G. Meschut,
M. Gude, Materials 14 (2021) 2286.
date_created: 2022-03-28T12:51:22Z
date_updated: 2022-03-29T15:48:59Z
department:
- _id: '157'
doi: 10.3390/ma14092286X
intvolume: ' 14'
language:
- iso: eng
page: '2286'
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '137'
name: 'TRR 285 – A03: TRR 285 - Subproject A03'
publication: Materials
status: public
title: Clinching of Thermoplastic Composites and Metals—A Comparison of Three Novel
Joining Technologies
type: journal_article
user_id: '68518'
volume: 14
year: '2021'
...
---
_id: '30662'
abstract:
- lang: eng
text: 'Industrial X-ray computed tomography (XCT) is a tool for non-destructive
testing and a volumetric analysis method with the ability to measure dimensions
and geometry inside a component without destroying it. However, XCT is a relatively
young technology in the field of dimensional metrology and thus faces several
challenges. The achievement of a high measurement resolution, which is re-quired
to detect small geometrical features, depends on a variety of influencing factors.
In this arti-cle, the interface structural resolution (ISR) as one of the key
challenges will be investigated. The two-sphere standard called the hourglass
standard allows the determination of the structural resolu-tion by evaluation
of the surrounding area of an ideal point contact of two spheres after the CT
re-construction in form of a neck-shaped transition. Close to the contact point
of the two spheres two opposing surfaces exist. Their distances from each other
increase as the distance from the contact point of the two spheres increase. The
determination of the distances between the spheres’ surface allows a statement
about the ISR. A new developed specimen or standard with a variable gap size consisting
of calibrated parallel gauge blocks allows statements about the ISR, too. Because
of the higher number of probing points of the gauge block standard the results
of the determined ISR are more stable compared to the hourglass standard. This
paper compares the results of the computed tomography measurements for the designed
interface structural resolution standard with those of the hourglass standard. '
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. Determination of the Interface Structural Resolution of
an Industrial X-Ray Computed Tomograph Using a Spherical Specimen and a Gap Specimen
Consisting of Gauge Blocks. Key Engineering Materials. 2021;883:41-48.
doi:10.4028/www.scientific.net/kem.883.41
apa: Busch, M., & Hausotte, T. (2021). Determination of the Interface Structural
Resolution of an Industrial X-Ray Computed Tomograph Using a Spherical Specimen
and a Gap Specimen Consisting of Gauge Blocks. Key Engineering Materials,
883, 41–48. https://doi.org/10.4028/www.scientific.net/kem.883.41
bibtex: '@article{Busch_Hausotte_2021, title={Determination of the Interface Structural
Resolution of an Industrial X-Ray Computed Tomograph Using a Spherical Specimen
and a Gap Specimen Consisting of Gauge Blocks}, volume={883}, DOI={10.4028/www.scientific.net/kem.883.41},
journal={Key Engineering Materials}, author={Busch, M. and Hausotte, T.}, year={2021},
pages={41–48} }'
chicago: 'Busch, M., and T. Hausotte. “Determination of the Interface Structural
Resolution of an Industrial X-Ray Computed Tomograph Using a Spherical Specimen
and a Gap Specimen Consisting of Gauge Blocks.” Key Engineering Materials
883 (2021): 41–48. https://doi.org/10.4028/www.scientific.net/kem.883.41.'
ieee: 'M. Busch and T. Hausotte, “Determination of the Interface Structural Resolution
of an Industrial X-Ray Computed Tomograph Using a Spherical Specimen and a Gap
Specimen Consisting of Gauge Blocks,” Key Engineering Materials, vol. 883,
pp. 41–48, 2021, doi: 10.4028/www.scientific.net/kem.883.41.'
mla: Busch, M., and T. Hausotte. “Determination of the Interface Structural Resolution
of an Industrial X-Ray Computed Tomograph Using a Spherical Specimen and a Gap
Specimen Consisting of Gauge Blocks.” Key Engineering Materials, vol. 883,
2021, pp. 41–48, doi:10.4028/www.scientific.net/kem.883.41.
short: M. Busch, T. Hausotte, Key Engineering Materials 883 (2021) 41–48.
date_created: 2022-03-28T13:58:55Z
date_updated: 2022-03-30T07:57:53Z
doi: 10.4028/www.scientific.net/kem.883.41
intvolume: ' 883'
language:
- iso: eng
page: 41-48
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: Key Engineering Materials
status: public
title: Determination of the Interface Structural Resolution of an Industrial X-Ray
Computed Tomograph Using a Spherical Specimen and a Gap Specimen Consisting of Gauge
Blocks
type: journal_article
user_id: '68518'
volume: 883
year: '2021'
...
---
_id: '30659'
abstract:
- lang: eng
text: 'In lightweight design, clinching is a cost-efficient solution as the joint
is created through localized cold-forming of the joining parts. A clinch point’s
quality is usually assessed using ex-situ destructive testing methods. These,
however, are unable to detect phenomena immediately during the joining process.
For instance, elastic deformations reverse and cracks close after unloading. In-situ
methods such as the force-displacement evaluation are used to control a clinching
process, though deviations in the clinch point geometry cannot be derived with
this method. To overcome these limitations, the clinching process can be investigated
using in-situ computed tomography (in-situ CT). However, a clinching tool made
of steel would cause strong artefacts and a high attenuation in the CT measurement,
reducing the significance of this method. Additionally, when joining parts of
the same material, the sheet-sheet interface is hardly detectable. This work aims
at identifying, firstly, tool materials that allow artefact-reduced CT measurements
during clinching, and, secondly, radiopaque materials that can be applied between
the joining parts to enhance the detectability of the sheet-sheet interface. Therefore,
both CT-suitable tool materials and radiopaque materials are selected and experimentally
investigated. In the clinching process, two aluminium sheets with radiopaque material
in between are clinched in a single-step (rotationally symmetric joint without
cut section). It is shown that e.g. silicon nitride is suited as tool material
and a tin layer is suitable to enhance the detectability of the sheet-sheet interface. '
author:
- first_name: D.
full_name: Köhler, D.
last_name: Köhler
- first_name: R.
full_name: Kupfer, R.
last_name: Kupfer
- first_name: J.
full_name: Troschitz, J.
last_name: Troschitz
- first_name: M.
full_name: Gude, M.
last_name: Gude
citation:
ama: Köhler D, Kupfer R, Troschitz J, Gude M. Clinching in In-situ CT – Experimental
Study on Suitable Tool Materials. ESAFORM 2021. Published online 2021.
doi:10.25518/esaform21.2781
apa: Köhler, D., Kupfer, R., Troschitz, J., & Gude, M. (2021). Clinching in
In-situ CT – Experimental Study on Suitable Tool Materials. ESAFORM 2021.
https://doi.org/10.25518/esaform21.2781
bibtex: '@article{Köhler_Kupfer_Troschitz_Gude_2021, title={Clinching in In-situ
CT – Experimental Study on Suitable Tool Materials}, DOI={10.25518/esaform21.2781},
journal={ESAFORM 2021}, author={Köhler, D. and Kupfer, R. and Troschitz, J. and
Gude, M.}, year={2021} }'
chicago: Köhler, D., R. Kupfer, J. Troschitz, and M. Gude. “Clinching in In-Situ
CT – Experimental Study on Suitable Tool Materials.” ESAFORM 2021, 2021.
https://doi.org/10.25518/esaform21.2781.
ieee: 'D. Köhler, R. Kupfer, J. Troschitz, and M. Gude, “Clinching in In-situ CT
– Experimental Study on Suitable Tool Materials,” ESAFORM 2021, 2021, doi:
10.25518/esaform21.2781.'
mla: Köhler, D., et al. “Clinching in In-Situ CT – Experimental Study on Suitable
Tool Materials.” ESAFORM 2021, 2021, doi:10.25518/esaform21.2781.
short: D. Köhler, R. Kupfer, J. Troschitz, M. Gude, ESAFORM 2021 (2021).
date_created: 2022-03-28T13:39:26Z
date_updated: 2022-03-29T15:53:46Z
doi: 10.25518/esaform21.2781
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'
publication: ESAFORM 2021
status: public
title: Clinching in In-situ CT – Experimental Study on Suitable Tool Materials
type: journal_article
user_id: '68518'
year: '2021'
...
---
_id: '30661'
abstract:
- lang: eng
text: As lightweight design gains more and more attention, time and cost-efficient
joining methods such as clinching are becoming more popular. A clinch point’s
quality is usually determined by ex situ destructive analyses such as microsectioning.
However, these methods do not yield the detection of phenomena occurring during
loading such as elastic deformations and cracks that close after unloading. Alternatively,
in situ computed tomography (in situ CT) can be used to investigate the loading
process of clinch points. In this paper, a method for in situ CT analysis of a
single-lap shear test with clinched metal sheets is presented at the example of
a clinched joint with two 2 mm thick aluminum sheets. Furthermore, the potential
of this method to validate numerical simulations is shown. Since the sheets’ surfaces
are locally in contact with each other, the interface between both aluminum sheets
and therefore the exact contour of the joining partners is difficult to identify
in CT analyses. To compensate for this, the application of copper varnish between
the sheets is investigated. The best in situ CT results are achieved with both
sheets treated. It showed that with this treatment, in situ CT is suitable to
properly observe the three-dimensional deformation behavior and to identify the
failure modes.
author:
- first_name: D.
full_name: Köhler, D.
last_name: Köhler
- first_name: R.
full_name: Kupfer, R.
last_name: Kupfer
- first_name: J.
full_name: Troschitz, J.
last_name: Troschitz
- first_name: M.
full_name: Gude, M.
last_name: Gude
citation:
ama: Köhler D, Kupfer R, Troschitz J, Gude M. In Situ Computed Tomography—Analysis
of a Single-Lap Shear Test with Clinch Points. Materials. 2021;14:1859.
doi:10.3390/ma14081859
apa: Köhler, D., Kupfer, R., Troschitz, J., & Gude, M. (2021). In Situ Computed
Tomography—Analysis of a Single-Lap Shear Test with Clinch Points. Materials,
14, 1859. https://doi.org/10.3390/ma14081859
bibtex: '@article{Köhler_Kupfer_Troschitz_Gude_2021, title={In Situ Computed Tomography—Analysis
of a Single-Lap Shear Test with Clinch Points}, volume={14}, DOI={10.3390/ma14081859},
journal={Materials}, author={Köhler, D. and Kupfer, R. and Troschitz, J. and Gude,
M.}, year={2021}, pages={1859} }'
chicago: 'Köhler, D., R. Kupfer, J. Troschitz, and M. Gude. “In Situ Computed Tomography—Analysis
of a Single-Lap Shear Test with Clinch Points.” Materials 14 (2021): 1859.
https://doi.org/10.3390/ma14081859.'
ieee: 'D. Köhler, R. Kupfer, J. Troschitz, and M. Gude, “In Situ Computed Tomography—Analysis
of a Single-Lap Shear Test with Clinch Points,” Materials, vol. 14, p.
1859, 2021, doi: 10.3390/ma14081859.'
mla: Köhler, D., et al. “In Situ Computed Tomography—Analysis of a Single-Lap Shear
Test with Clinch Points.” Materials, vol. 14, 2021, p. 1859, doi:10.3390/ma14081859.
short: D. Köhler, R. Kupfer, J. Troschitz, M. Gude, Materials 14 (2021) 1859.
date_created: 2022-03-28T13:41:29Z
date_updated: 2022-03-30T07:53:37Z
doi: 10.3390/ma14081859
intvolume: ' 14'
language:
- iso: eng
page: '1859'
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: Materials
status: public
title: In Situ Computed Tomography—Analysis of a Single-Lap Shear Test with Clinch
Points
type: journal_article
user_id: '68518'
volume: 14
year: '2021'
...
---
_id: '30719'
abstract:
- lang: eng
text: Due to increasing demands regarding ecological and economic specifications
in vehicle design, the effort required for production is continuously increasing.
One trend is the increased use of multi-material systems, which are characterised
by the use of different materials such as high-strength steels or aluminium alloys.
In addition to the varying mechanical properties of the components, an increased
number of variants accompanied by different geometries is leading to increasing
challenges on body construction. For the assembly and connection of the individual
components, conventional joining methods reach their limitations. Therefore, new
joining methods are necessary, which feature properties of versatility and can
adapt to process and disturbance variables. One way of achieving tailored joints
is to use a tumbling self-piercing riveting process. For the design of the process
route, numerical investigations are necessary for which a characterisation of
the friction properties is necessary. This paper therefore investigates the contact
and friction conditions that occur in a tumbling self-piercing riveting process.
The individual contacts between the process components are identified and based
on this, suitable processes for the characterisation of the friction factors -
and coefficients are selected and performed.
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. Friction Characterisation for a Tumbling Self-Piercing
Riveting Process. Key Engineering Materials. 2021;883:27-34. doi:10.4028/www.scientific.net/kem.883.27
apa: Wituschek, S., & Lechner, M. (2021). Friction Characterisation for a Tumbling
Self-Piercing Riveting Process. Key Engineering Materials, 883,
27–34. https://doi.org/10.4028/www.scientific.net/kem.883.27
bibtex: '@article{Wituschek_Lechner_2021, title={Friction Characterisation for a
Tumbling Self-Piercing Riveting Process}, volume={883}, DOI={10.4028/www.scientific.net/kem.883.27},
journal={Key Engineering Materials}, author={Wituschek, S. and Lechner, M.}, year={2021},
pages={27–34} }'
chicago: 'Wituschek, S., and M. Lechner. “Friction Characterisation for a Tumbling
Self-Piercing Riveting Process.” Key Engineering Materials 883 (2021):
27–34. https://doi.org/10.4028/www.scientific.net/kem.883.27.'
ieee: 'S. Wituschek and M. Lechner, “Friction Characterisation for a Tumbling Self-Piercing
Riveting Process,” Key Engineering Materials, vol. 883, pp. 27–34, 2021,
doi: 10.4028/www.scientific.net/kem.883.27.'
mla: Wituschek, S., and M. Lechner. “Friction Characterisation for a Tumbling Self-Piercing
Riveting Process.” Key Engineering Materials, vol. 883, 2021, pp. 27–34,
doi:10.4028/www.scientific.net/kem.883.27.
short: S. Wituschek, M. Lechner, Key Engineering Materials 883 (2021) 27–34.
date_created: 2022-03-29T10:35:19Z
date_updated: 2022-03-29T15:54:33Z
doi: 10.4028/www.scientific.net/kem.883.27
intvolume: ' 883'
language:
- iso: eng
page: 27-34
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: Key Engineering Materials
status: public
title: Friction Characterisation for a Tumbling Self-Piercing Riveting Process
type: journal_article
user_id: '68518'
volume: 883
year: '2021'
...
---
_id: '30649'
abstract:
- lang: eng
text: Nowadays, the production of modern lightweight structures, like a body in
white structure requires a wide variety of mechanical joining processes. To fulfill
the various demands, mechanical joining processes and joining elements (JE) are
used. Very often, they are adapted to the application, which leads in turn to
a numerous of different variants, high costs, and loss of the process chain versatility.
To overcome this drawback, an innovative approach is the usage of individually
produced and task-adapted JE, the so-called friction spun joint connectors (FSJC).
These connectors can be modified in shape as well as in material properties. This
flexibility offers high potential for lightweight design but also increases the
necessary analytical effort regarding the forming process as well as the manufactured
joint's properties. Therefore, a new analysis strategy based on the Finite-Element-Method
(FEM) is proposed, which numerically determines the local load bearing capacity
within a given joint in order to identify the critical regions for load transfer.
The process of joining element manufacturing and the analysis strategy will be
described in detail and optimization results of the joints are shown. Numerical
results are discussed and possible recommendations for joint manufacturing are
derived.
author:
- first_name: Christian
full_name: Wischer, Christian
id: '72219'
last_name: Wischer
- first_name: Christian
full_name: Steinfelder, Christian
last_name: Steinfelder
- first_name: Werner
full_name: Homberg, Werner
last_name: Homberg
- first_name: Alexander
full_name: Brosius, Alexander
last_name: Brosius
citation:
ama: 'Wischer C, Steinfelder C, Homberg W, Brosius A. Joining with Friction Spun
Joint Connectors – Manufacturing and Analysis. IOP Conference Series: Materials
Science and Engineering. 2021;1157:012007. doi:10.1088/1757-899x/1157/1/012007'
apa: 'Wischer, C., Steinfelder, C., Homberg, W., & Brosius, A. (2021). Joining
with Friction Spun Joint Connectors – Manufacturing and Analysis. IOP Conference
Series: Materials Science and Engineering, 1157, 012007. https://doi.org/10.1088/1757-899x/1157/1/012007'
bibtex: '@article{Wischer_Steinfelder_Homberg_Brosius_2021, title={Joining with
Friction Spun Joint Connectors – Manufacturing and Analysis}, volume={1157}, DOI={10.1088/1757-899x/1157/1/012007},
journal={IOP Conference Series: Materials Science and Engineering}, author={Wischer,
Christian and Steinfelder, Christian and Homberg, Werner and Brosius, Alexander},
year={2021}, pages={012007} }'
chicago: 'Wischer, Christian, Christian Steinfelder, Werner Homberg, and Alexander
Brosius. “Joining with Friction Spun Joint Connectors – Manufacturing and Analysis.”
IOP Conference Series: Materials Science and Engineering 1157 (2021): 012007.
https://doi.org/10.1088/1757-899x/1157/1/012007.'
ieee: 'C. Wischer, C. Steinfelder, W. Homberg, and A. Brosius, “Joining with Friction
Spun Joint Connectors – Manufacturing and Analysis,” IOP Conference Series:
Materials Science and Engineering, vol. 1157, p. 012007, 2021, doi: 10.1088/1757-899x/1157/1/012007.'
mla: 'Wischer, Christian, et al. “Joining with Friction Spun Joint Connectors –
Manufacturing and Analysis.” IOP Conference Series: Materials Science and Engineering,
vol. 1157, 2021, p. 012007, doi:10.1088/1757-899x/1157/1/012007.'
short: 'C. Wischer, C. Steinfelder, W. Homberg, A. Brosius, IOP Conference Series:
Materials Science and Engineering 1157 (2021) 012007.'
date_created: 2022-03-28T12:46:21Z
date_updated: 2022-12-23T15:13:27Z
department:
- _id: '156'
- _id: '630'
doi: 10.1088/1757-899x/1157/1/012007
intvolume: ' 1157'
language:
- iso: eng
page: '012007'
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '147'
name: 'TRR 285 – C03: TRR 285 - Subproject C03'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '140'
name: 'TRR 285 – B01: TRR 285 - Subproject B01'
publication: 'IOP Conference Series: Materials Science and Engineering'
status: public
title: Joining with Friction Spun Joint Connectors – Manufacturing and Analysis
type: journal_article
user_id: '14931'
volume: 1157
year: '2021'
...
---
_id: '30702'
author:
- first_name: Christian
full_name: Wischer, Christian
id: '72219'
last_name: Wischer
- first_name: Werner
full_name: Homberg, Werner
last_name: Homberg
citation:
ama: 'Wischer C, Homberg W. A contribution on versatile process chains: joining
with adaptive joining elements, formed by friction spinning. Production Engineering.
Published online 2021. doi:10.1007/s11740-021-01094-8'
apa: 'Wischer, C., & Homberg, W. (2021). A contribution on versatile process
chains: joining with adaptive joining elements, formed by friction spinning. Production
Engineering. https://doi.org/10.1007/s11740-021-01094-8'
bibtex: '@article{Wischer_Homberg_2021, title={A contribution on versatile process
chains: joining with adaptive joining elements, formed by friction spinning},
DOI={10.1007/s11740-021-01094-8},
journal={Production Engineering}, author={Wischer, Christian and Homberg, Werner},
year={2021} }'
chicago: 'Wischer, Christian, and Werner Homberg. “A Contribution on Versatile Process
Chains: Joining with Adaptive Joining Elements, Formed by Friction Spinning.”
Production Engineering, 2021. https://doi.org/10.1007/s11740-021-01094-8.'
ieee: 'C. Wischer and W. Homberg, “A contribution on versatile process chains: joining
with adaptive joining elements, formed by friction spinning,” Production Engineering,
2021, doi: 10.1007/s11740-021-01094-8.'
mla: 'Wischer, Christian, and Werner Homberg. “A Contribution on Versatile Process
Chains: Joining with Adaptive Joining Elements, Formed by Friction Spinning.”
Production Engineering, 2021, doi:10.1007/s11740-021-01094-8.'
short: C. Wischer, W. Homberg, Production Engineering (2021).
date_created: 2022-03-29T09:22:51Z
date_updated: 2022-12-23T15:33:08Z
department:
- _id: '156'
- _id: '630'
doi: 10.1007/s11740-021-01094-8
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: '147'
name: 'TRR 285 – C03: TRR 285 - Subproject C03'
publication: Production Engineering
status: public
title: 'A contribution on versatile process chains: joining with adaptive joining
elements, formed by friction spinning'
type: journal_article
user_id: '14931'
year: '2021'
...
---
_id: '30680'
author:
- first_name: D.
full_name: Weiß, D.
last_name: Weiß
- first_name: B.
full_name: Schramm, B.
last_name: Schramm
- first_name: G.
full_name: Kullmer, G.
last_name: Kullmer
citation:
ama: Weiß D, Schramm B, Kullmer G. Numerical and Experimental Fracture Mechanical
Investigations of Clinchable Sheet Metals Made of HCT590X. Key Engineering
Materials. 2021;883:127-132. doi:10.4028/www.scientific.net/kem.883.127
apa: Weiß, D., Schramm, B., & Kullmer, G. (2021). Numerical and Experimental
Fracture Mechanical Investigations of Clinchable Sheet Metals Made of HCT590X.
Key Engineering Materials, 883, 127–132. https://doi.org/10.4028/www.scientific.net/kem.883.127
bibtex: '@article{Weiß_Schramm_Kullmer_2021, title={Numerical and Experimental Fracture
Mechanical Investigations of Clinchable Sheet Metals Made of HCT590X}, volume={883},
DOI={10.4028/www.scientific.net/kem.883.127},
journal={Key Engineering Materials}, author={Weiß, D. and Schramm, B. and Kullmer,
G.}, year={2021}, pages={127–132} }'
chicago: 'Weiß, D., B. Schramm, and G. Kullmer. “Numerical and Experimental Fracture
Mechanical Investigations of Clinchable Sheet Metals Made of HCT590X.” Key
Engineering Materials 883 (2021): 127–32. https://doi.org/10.4028/www.scientific.net/kem.883.127.'
ieee: 'D. Weiß, B. Schramm, and G. Kullmer, “Numerical and Experimental Fracture
Mechanical Investigations of Clinchable Sheet Metals Made of HCT590X,” Key
Engineering Materials, vol. 883, pp. 127–132, 2021, doi: 10.4028/www.scientific.net/kem.883.127.'
mla: Weiß, D., et al. “Numerical and Experimental Fracture Mechanical Investigations
of Clinchable Sheet Metals Made of HCT590X.” Key Engineering Materials,
vol. 883, 2021, pp. 127–32, doi:10.4028/www.scientific.net/kem.883.127.
short: D. Weiß, B. Schramm, G. Kullmer, Key Engineering Materials 883 (2021) 127–132.
date_created: 2022-03-29T08:43:23Z
date_updated: 2023-01-02T10:33:13Z
doi: 10.4028/www.scientific.net/kem.883.127
intvolume: ' 883'
language:
- iso: eng
page: 127-132
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '143'
name: 'TRR 285 – B04: TRR 285 - Subproject B04'
publication: Key Engineering Materials
status: public
title: Numerical and Experimental Fracture Mechanical Investigations of Clinchable
Sheet Metals Made of HCT590X
type: journal_article
user_id: '14931'
volume: 883
year: '2021'
...
---
_id: '30698'
author:
- first_name: B.
full_name: Gröger, B.
last_name: Gröger
- first_name: D.
full_name: Köhler, D.
last_name: Köhler
- first_name: J.
full_name: Vorderbrüggen, J.
last_name: Vorderbrüggen
- first_name: J.
full_name: Troschitz, J.
last_name: Troschitz
- first_name: R.
full_name: Kupfer, R.
last_name: Kupfer
- first_name: G.
full_name: Meschut, G.
last_name: Meschut
- first_name: M.
full_name: Gude, M.
last_name: Gude
citation:
ama: Gröger B, Köhler D, Vorderbrüggen J, et al. Computed tomography investigation
of the material structure in clinch joints in aluminium fibre-reinforced thermoplastic
sheets. Production Engineering. Published online 2021. doi:10.1007/s11740-021-01091-x
apa: Gröger, B., Köhler, D., Vorderbrüggen, J., Troschitz, J., Kupfer, R., Meschut,
G., & Gude, M. (2021). Computed tomography investigation of the material structure
in clinch joints in aluminium fibre-reinforced thermoplastic sheets. Production
Engineering. https://doi.org/10.1007/s11740-021-01091-x
bibtex: '@article{Gröger_Köhler_Vorderbrüggen_Troschitz_Kupfer_Meschut_Gude_2021,
title={Computed tomography investigation of the material structure in clinch joints
in aluminium fibre-reinforced thermoplastic sheets}, DOI={10.1007/s11740-021-01091-x},
journal={Production Engineering}, author={Gröger, B. and Köhler, D. and Vorderbrüggen,
J. and Troschitz, J. and Kupfer, R. and Meschut, G. and Gude, M.}, year={2021}
}'
chicago: Gröger, B., D. Köhler, J. Vorderbrüggen, J. Troschitz, R. Kupfer, G. Meschut,
and M. Gude. “Computed Tomography Investigation of the Material Structure in Clinch
Joints in Aluminium Fibre-Reinforced Thermoplastic Sheets.” Production Engineering,
2021. https://doi.org/10.1007/s11740-021-01091-x.
ieee: 'B. Gröger et al., “Computed tomography investigation of the material
structure in clinch joints in aluminium fibre-reinforced thermoplastic sheets,”
Production Engineering, 2021, doi: 10.1007/s11740-021-01091-x.'
mla: Gröger, B., et al. “Computed Tomography Investigation of the Material Structure
in Clinch Joints in Aluminium Fibre-Reinforced Thermoplastic Sheets.” Production
Engineering, 2021, doi:10.1007/s11740-021-01091-x.
short: B. Gröger, D. Köhler, J. Vorderbrüggen, J. Troschitz, R. Kupfer, G. Meschut,
M. Gude, Production Engineering (2021).
date_created: 2022-03-29T09:15:36Z
date_updated: 2023-01-02T11:18:51Z
department:
- _id: '157'
- _id: '630'
doi: 10.1007/s11740-021-01091-x
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: Production Engineering
status: public
title: Computed tomography investigation of the material structure in clinch joints
in aluminium fibre-reinforced thermoplastic sheets
type: journal_article
user_id: '14931'
year: '2021'
...
---
_id: '30699'
author:
- first_name: D.
full_name: Weiß, D.
last_name: Weiß
- first_name: B.
full_name: Schramm, B.
last_name: Schramm
- first_name: G.
full_name: Kullmer, G.
last_name: Kullmer
citation:
ama: Weiß D, Schramm B, Kullmer G. Holistic investigation chain for the experimental
determination of fracture mechanical material parameters with special specimens.
Production Engineering. Published online 2021. doi:10.1007/s11740-021-01096-6
apa: Weiß, D., Schramm, B., & Kullmer, G. (2021). Holistic investigation chain
for the experimental determination of fracture mechanical material parameters
with special specimens. Production Engineering. https://doi.org/10.1007/s11740-021-01096-6
bibtex: '@article{Weiß_Schramm_Kullmer_2021, title={Holistic investigation chain
for the experimental determination of fracture mechanical material parameters
with special specimens}, DOI={10.1007/s11740-021-01096-6},
journal={Production Engineering}, author={Weiß, D. and Schramm, B. and Kullmer,
G.}, year={2021} }'
chicago: Weiß, D., B. Schramm, and G. Kullmer. “Holistic Investigation Chain for
the Experimental Determination of Fracture Mechanical Material Parameters with
Special Specimens.” Production Engineering, 2021. https://doi.org/10.1007/s11740-021-01096-6.
ieee: 'D. Weiß, B. Schramm, and G. Kullmer, “Holistic investigation chain for the
experimental determination of fracture mechanical material parameters with special
specimens,” Production Engineering, 2021, doi: 10.1007/s11740-021-01096-6.'
mla: Weiß, D., et al. “Holistic Investigation Chain for the Experimental Determination
of Fracture Mechanical Material Parameters with Special Specimens.” Production
Engineering, 2021, doi:10.1007/s11740-021-01096-6.
short: D. Weiß, B. Schramm, G. Kullmer, Production Engineering (2021).
date_created: 2022-03-29T09:17:55Z
date_updated: 2023-01-02T11:19:11Z
department:
- _id: '630'
doi: 10.1007/s11740-021-01096-6
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: '143'
name: 'TRR 285 – B04: TRR 285 - Subproject B04'
publication: Production Engineering
status: public
title: Holistic investigation chain for the experimental determination of fracture
mechanical material parameters with special specimens
type: journal_article
user_id: '14931'
year: '2021'
...
---
_id: '30696'
author:
- 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
citation:
ama: Zirngibl C, Schleich B, Wartzack S. Approach for the automated and data-based
design of mechanical joints. Proceedings of the Design Society. 2021;1:521.
doi:10.1017/pds.2021.52
apa: Zirngibl, C., Schleich, B., & Wartzack, S. (2021). Approach for the automated
and data-based design of mechanical joints. Proceedings of the Design Society,
1, 521. https://doi.org/10.1017/pds.2021.52
bibtex: '@article{Zirngibl_Schleich_Wartzack_2021, title={Approach for the automated
and data-based design of mechanical joints}, volume={1}, DOI={10.1017/pds.2021.52},
journal={Proceedings of the Design Society}, author={Zirngibl, C. and Schleich,
B. and Wartzack, S.}, year={2021}, pages={521} }'
chicago: 'Zirngibl, C., B. Schleich, and S. Wartzack. “Approach for the Automated
and Data-Based Design of Mechanical Joints.” Proceedings of the Design Society
1 (2021): 521. https://doi.org/10.1017/pds.2021.52.'
ieee: 'C. Zirngibl, B. Schleich, and S. Wartzack, “Approach for the automated and
data-based design of mechanical joints,” Proceedings of the Design Society,
vol. 1, p. 521, 2021, doi: 10.1017/pds.2021.52.'
mla: Zirngibl, C., et al. “Approach for the Automated and Data-Based Design of Mechanical
Joints.” Proceedings of the Design Society, vol. 1, 2021, p. 521, doi:10.1017/pds.2021.52.
short: C. Zirngibl, B. Schleich, S. Wartzack, Proceedings of the Design Society
1 (2021) 521.
date_created: 2022-03-29T09:12:58Z
date_updated: 2023-01-02T11:19:35Z
department:
- _id: '630'
doi: 10.1017/pds.2021.52
intvolume: ' 1'
language:
- iso: eng
page: '521'
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '144'
name: 'TRR 285 – B05: TRR 285 - Subproject B05'
publication: Proceedings of the Design Society
status: public
title: Approach for the automated and data-based design of mechanical joints
type: journal_article
user_id: '14931'
volume: 1
year: '2021'
...
---
_id: '30700'
author:
- first_name: C.
full_name: Zirngibl, C.
last_name: Zirngibl
- first_name: F.
full_name: Dworschak, F.
last_name: Dworschak
- first_name: B.
full_name: Schleich, B.
last_name: Schleich
- first_name: S.
full_name: Wartzack, S.
last_name: Wartzack
citation:
ama: Zirngibl C, Dworschak F, Schleich B, Wartzack S. Application of reinforcement
learning for the optimization of clinch joint characteristics. Production Engineering.
Published online 2021. doi:10.1007/s11740-021-01098-4
apa: Zirngibl, C., Dworschak, F., Schleich, B., & Wartzack, S. (2021). Application
of reinforcement learning for the optimization of clinch joint characteristics.
Production Engineering. https://doi.org/10.1007/s11740-021-01098-4
bibtex: '@article{Zirngibl_Dworschak_Schleich_Wartzack_2021, title={Application
of reinforcement learning for the optimization of clinch joint characteristics},
DOI={10.1007/s11740-021-01098-4},
journal={Production Engineering}, author={Zirngibl, C. and Dworschak, F. and Schleich,
B. and Wartzack, S.}, year={2021} }'
chicago: Zirngibl, C., F. Dworschak, B. Schleich, and S. Wartzack. “Application
of Reinforcement Learning for the Optimization of Clinch Joint Characteristics.”
Production Engineering, 2021. https://doi.org/10.1007/s11740-021-01098-4.
ieee: 'C. Zirngibl, F. Dworschak, B. Schleich, and S. Wartzack, “Application of
reinforcement learning for the optimization of clinch joint characteristics,”
Production Engineering, 2021, doi: 10.1007/s11740-021-01098-4.'
mla: Zirngibl, C., et al. “Application of Reinforcement Learning for the Optimization
of Clinch Joint Characteristics.” Production Engineering, 2021, doi:10.1007/s11740-021-01098-4.
short: C. Zirngibl, F. Dworschak, B. Schleich, S. Wartzack, Production Engineering
(2021).
date_created: 2022-03-29T09:19:07Z
date_updated: 2023-01-02T11:19:55Z
department:
- _id: '630'
doi: 10.1007/s11740-021-01098-4
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '144'
name: 'TRR 285 – B05: TRR 285 - Subproject B05'
publication: Production Engineering
status: public
title: Application of reinforcement learning for the optimization of clinch joint
characteristics
type: journal_article
user_id: '14931'
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: '30697'
author:
- first_name: R.
full_name: Lafarge, R.
last_name: Lafarge
- first_name: A.
full_name: Wolf, A.
last_name: Wolf
- first_name: C.
full_name: Guilleaume, C.
last_name: Guilleaume
- first_name: A.
full_name: Brosius, A.
last_name: Brosius
citation:
ama: Lafarge R, Wolf A, Guilleaume C, Brosius A. A New Non-destructive Testing Method
Applied to Clinching. Minerals, Metals and Materials Series. Published
online 2021:1461. doi:10.1007/978-3-030-75381-8_121
apa: Lafarge, R., Wolf, A., Guilleaume, C., & Brosius, A. (2021). A New Non-destructive
Testing Method Applied to Clinching. Minerals, Metals and Materials Series,
1461. https://doi.org/10.1007/978-3-030-75381-8_121
bibtex: '@article{Lafarge_Wolf_Guilleaume_Brosius_2021, title={A New Non-destructive
Testing Method Applied to Clinching}, DOI={10.1007/978-3-030-75381-8_121},
journal={Minerals, Metals and Materials Series}, author={Lafarge, R. and Wolf,
A. and Guilleaume, C. and Brosius, A.}, year={2021}, pages={1461} }'
chicago: Lafarge, R., A. Wolf, C. Guilleaume, and A. Brosius. “A New Non-Destructive
Testing Method Applied to Clinching.” Minerals, Metals and Materials Series,
2021, 1461. https://doi.org/10.1007/978-3-030-75381-8_121.
ieee: 'R. Lafarge, A. Wolf, C. Guilleaume, and A. Brosius, “A New Non-destructive
Testing Method Applied to Clinching,” Minerals, Metals and Materials Series,
p. 1461, 2021, doi: 10.1007/978-3-030-75381-8_121.'
mla: Lafarge, R., et al. “A New Non-Destructive Testing Method Applied to Clinching.”
Minerals, Metals and Materials Series, 2021, p. 1461, doi:10.1007/978-3-030-75381-8_121.
short: R. Lafarge, A. Wolf, C. Guilleaume, A. Brosius, Minerals, Metals and Materials
Series (2021) 1461.
date_created: 2022-03-29T09:14:12Z
date_updated: 2023-01-02T11:20:45Z
department:
- _id: '630'
doi: 10.1007/978-3-030-75381-8_121
language:
- iso: eng
page: '1461'
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: Minerals, Metals and Materials Series
status: public
title: A New Non-destructive Testing Method Applied to Clinching
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: '30718'
abstract:
- lang: eng
text: The growing demands of resource-saving processes and products are leading
to increasing importance of lightweight construction for the automotive industry.
One approach is multi-material design, which uses high-strength steels and aluminium
alloys in the production of vehicle bodies. Therefore, reliable processes for
joining components with different mechanical properties and geometries are necessary.
As conventional joining processes reach their limits, new versatile processes
and methods are required which can adapt to different process conditions and disturbance
variables. A widely used joining process to join different materials is self-piercing
riveting as a joining by forming method, however it is characterised as inflexible
to changing process conditions due to a linear process kinematic and rigid dies.
An approach to extend the process limits is the application of a tumbling kinematic
for the punch. Thus, an adapted tumbling strategy can be used to influence the
joining process and to achieve a controlled material flow in order to manufacture
tailored joints. For the fundamental investigation of the process, numerical investigations
are necessary. In order to achieve high model quality a precise material modelling
is crucial. Therefore, a characterisation of the materials HCT590X+Z and EN AW-6014
as typical materials of multi-material mixes and the rivet material 38B2 is performed.
Due to the different stress conditions during tumbling self-piercing riveting
suitable characterisation methods are selected and carried out.
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. Material characterisation methods for a tumbling self-piercing
riveting process. ESAFORM 2021. Published online 2021. doi:10.25518/esaform21.398
apa: Wituschek, S., & Lechner, M. (2021). Material characterisation methods
for a tumbling self-piercing riveting process. ESAFORM 2021. https://doi.org/10.25518/esaform21.398
bibtex: '@article{Wituschek_Lechner_2021, title={Material characterisation methods
for a tumbling self-piercing riveting process}, DOI={10.25518/esaform21.398},
journal={ESAFORM 2021}, author={Wituschek, S. and Lechner, M.}, year={2021} }'
chicago: Wituschek, S., and M. Lechner. “Material Characterisation Methods for a
Tumbling Self-Piercing Riveting Process.” ESAFORM 2021, 2021. https://doi.org/10.25518/esaform21.398.
ieee: 'S. Wituschek and M. Lechner, “Material characterisation methods for a tumbling
self-piercing riveting process,” ESAFORM 2021, 2021, doi: 10.25518/esaform21.398.'
mla: Wituschek, S., and M. Lechner. “Material Characterisation Methods for a Tumbling
Self-Piercing Riveting Process.” ESAFORM 2021, 2021, doi:10.25518/esaform21.398.
short: S. Wituschek, M. Lechner, ESAFORM 2021 (2021).
date_created: 2022-03-29T10:34:25Z
date_updated: 2023-01-02T11:47:03Z
department:
- _id: '630'
doi: 10.25518/esaform21.398
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: ESAFORM 2021
status: public
title: Material characterisation methods for a tumbling self-piercing riveting process
type: journal_article
user_id: '14931'
year: '2021'
...
---
_id: '30683'
abstract:
- lang: eng
text: 'When joining lightweight parts of various materials, clinching is a cost
efficient solution. In a production line, the quality of a clinch point is primarily
controlled by measurement of dimensions, which are accessible from outside. However,
methods such as visual testing and measuring the bottom thickness as well as the
outer diameter are not able to deliver any information about the most significant
geometrical characteristic of the clinch point, neck thickness and undercut. Furthermore,
ex-situ destructive methods such as microsectioning cannot detect elastic deformations
and cracks that close after unloading. In order to exceed the current limits,
a new non-destructive in-situ testing method for the clinching process is necessary.
This work proposes a concept to characterize clinch points in-situ by combining
two complementary non-destructive methods, namely, computed tomography (CT) and
ultrasonic testing. Firstly, clinch points with different geometrical characteristics
are analysed experimentally using ex-situ CT to get a highly spatially resolved
3D-image of the object. In this context, highly X-ray attenuating materials enhancing
the visibility of the sheet-sheet interface are investigated. Secondly, the test
specimens are modelled using finite element method (FEM) and a transient dynamic
analysis (TDA) is conducted to study the effect of the geometrical differences
on the deformation energy and to qualify the TDA as a fast in-situ non-destructive
method for characterizing clinch points at high temporal resolution. '
author:
- first_name: D.
full_name: Köhler, D.
last_name: Köhler
- first_name: B.
full_name: Sadeghian, B.
last_name: Sadeghian
- first_name: R.
full_name: Kupfer, R.
last_name: Kupfer
- first_name: J.
full_name: Troschitz, J.
last_name: Troschitz
- first_name: M.
full_name: Gude, M.
last_name: Gude
- first_name: A.
full_name: Brosius, A.
last_name: Brosius
citation:
ama: Köhler D, Sadeghian B, Kupfer R, Troschitz J, Gude M, Brosius A. A Method for
Characterization of Geometric Deviations in Clinch Points with Computed Tomography
and Transient Dynamic Analysis. Key Engineering Materials. 2021;883:89-96.
doi:10.4028/www.scientific.net/kem.883.89
apa: Köhler, D., Sadeghian, B., Kupfer, R., Troschitz, J., Gude, M., & Brosius,
A. (2021). A Method for Characterization of Geometric Deviations in Clinch Points
with Computed Tomography and Transient Dynamic Analysis. Key Engineering Materials,
883, 89–96. https://doi.org/10.4028/www.scientific.net/kem.883.89
bibtex: '@article{Köhler_Sadeghian_Kupfer_Troschitz_Gude_Brosius_2021, title={A
Method for Characterization of Geometric Deviations in Clinch Points with Computed
Tomography and Transient Dynamic Analysis}, volume={883}, DOI={10.4028/www.scientific.net/kem.883.89},
journal={Key Engineering Materials}, author={Köhler, D. and Sadeghian, B. and
Kupfer, R. and Troschitz, J. and Gude, M. and Brosius, A.}, year={2021}, pages={89–96}
}'
chicago: 'Köhler, D., B. Sadeghian, R. Kupfer, J. Troschitz, M. Gude, and A. Brosius.
“A Method for Characterization of Geometric Deviations in Clinch Points with Computed
Tomography and Transient Dynamic Analysis.” Key Engineering Materials 883
(2021): 89–96. https://doi.org/10.4028/www.scientific.net/kem.883.89.'
ieee: 'D. Köhler, B. Sadeghian, R. Kupfer, J. Troschitz, M. Gude, and A. Brosius,
“A Method for Characterization of Geometric Deviations in Clinch Points with Computed
Tomography and Transient Dynamic Analysis,” Key Engineering Materials,
vol. 883, pp. 89–96, 2021, doi: 10.4028/www.scientific.net/kem.883.89.'
mla: Köhler, D., et al. “A Method for Characterization of Geometric Deviations in
Clinch Points with Computed Tomography and Transient Dynamic Analysis.” Key
Engineering Materials, vol. 883, 2021, pp. 89–96, doi:10.4028/www.scientific.net/kem.883.89.
short: D. Köhler, B. Sadeghian, R. Kupfer, J. Troschitz, M. Gude, A. Brosius, Key
Engineering Materials 883 (2021) 89–96.
date_created: 2022-03-29T08:46:40Z
date_updated: 2023-01-02T11:48:16Z
department:
- _id: '630'
doi: 10.4028/www.scientific.net/kem.883.89
intvolume: ' 883'
language:
- iso: eng
page: 89-96
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
status: public
title: A Method for Characterization of Geometric Deviations in Clinch Points with
Computed Tomography and Transient Dynamic Analysis
type: journal_article
user_id: '14931'
volume: 883
year: '2021'
...
---
_id: '30663'
abstract:
- lang: eng
text: 'The use of clinch joints, e.g. vehicle structures, is determined by the reliability
of the joint and its strength properties - in particular the fatigue strength.
Clinch connections offer the advantage over form-closure and force-closure processes
that they can also be used for hybrid material combinations. In order to be able
to evaluate the influence of the geometry parameters such as e.g. undercut, neck
thickness or also base thickness on the fatigue behavior, three clinch connections
(in optimum and compromise design) with different tool parameters were designed
and examined using the example of a joining task with aluminum sheet material.
For this purpose, fatigue curves (F-N curves) in the range of high to very high
numbers of load cycles (N = 105 to 107) were determined. In this load cycle range,
a so-called "neck fracture" is mainly to be expected as the type of failure, whereas
for quasi-static tests, a “buckling” is more likely to occur. The tests were carried
out on single-cut overlapping shear tensile specimens. Metallographic and scanning
electron microscopic examinations of the joints and the fracture surfaces served
to identify the crack initiation site and to clarify the respective type of failure.
Significant differences in the damage behaviour of the three clinching variants
could be shown. This observation enables one step into the direction of fully
understanding the relationship along the causal chain "joint requirements - joining
process - fatigue strength". Thus the adaptability of the clinching process can
be improved. '
author:
- first_name: L.
full_name: Ewenz, L.
last_name: Ewenz
- first_name: J.
full_name: Kalich, J.
last_name: Kalich
- first_name: M.
full_name: Zimmermann, M.
last_name: Zimmermann
- first_name: U.
full_name: Füssel, U.
last_name: Füssel
citation:
ama: Ewenz L, Kalich J, Zimmermann M, Füssel U. Effect of Different Tool Geometries
on the Mechanical Properties of Al-Al Clinch Joints. Key Engineering Materials.
2021;883:65-72. doi:10.4028/www.scientific.net/kem.883.65
apa: Ewenz, L., Kalich, J., Zimmermann, M., & Füssel, U. (2021). Effect of Different
Tool Geometries on the Mechanical Properties of Al-Al Clinch Joints. Key Engineering
Materials, 883, 65–72. https://doi.org/10.4028/www.scientific.net/kem.883.65
bibtex: '@article{Ewenz_Kalich_Zimmermann_Füssel_2021, title={Effect of Different
Tool Geometries on the Mechanical Properties of Al-Al Clinch Joints}, volume={883},
DOI={10.4028/www.scientific.net/kem.883.65},
journal={Key Engineering Materials}, author={Ewenz, L. and Kalich, J. and Zimmermann,
M. and Füssel, U.}, year={2021}, pages={65–72} }'
chicago: 'Ewenz, L., J. Kalich, M. Zimmermann, and U. Füssel. “Effect of Different
Tool Geometries on the Mechanical Properties of Al-Al Clinch Joints.” Key Engineering
Materials 883 (2021): 65–72. https://doi.org/10.4028/www.scientific.net/kem.883.65.'
ieee: 'L. Ewenz, J. Kalich, M. Zimmermann, and U. Füssel, “Effect of Different Tool
Geometries on the Mechanical Properties of Al-Al Clinch Joints,” Key Engineering
Materials, vol. 883, pp. 65–72, 2021, doi: 10.4028/www.scientific.net/kem.883.65.'
mla: Ewenz, L., et al. “Effect of Different Tool Geometries on the Mechanical Properties
of Al-Al Clinch Joints.” Key Engineering Materials, vol. 883, 2021, pp.
65–72, doi:10.4028/www.scientific.net/kem.883.65.
short: L. Ewenz, J. Kalich, M. Zimmermann, U. Füssel, Key Engineering Materials
883 (2021) 65–72.
date_created: 2022-03-28T14:00:19Z
date_updated: 2023-01-02T11:49:08Z
department:
- _id: '630'
doi: 10.4028/www.scientific.net/kem.883.65
intvolume: ' 883'
language:
- iso: eng
page: 65-72
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '141'
name: 'TRR 285 – B02: TRR 285 - Subproject B02'
- _id: '138'
name: 'TRR 285 – A04: TRR 285 - Subproject A04'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
publication: Key Engineering Materials
status: public
title: Effect of Different Tool Geometries on the Mechanical Properties of Al-Al Clinch
Joints
type: journal_article
user_id: '14931'
volume: 883
year: '2021'
...
---
_id: '30688'
abstract:
- lang: eng
text: 'Thermally supported clinching (Hotclinch) is a novel promising process to
join dissimilar materials. Here, metal and fibre-reinforced thermoplastics (FRTP)
are used within this single step joining process and without the usage of auxiliary
parts like screws or rivets. For this purpose, heat is applied to improve the
formability of the reinforced thermoplastic. This enables joining of the materials
using conventional clinching-tools. Focus of this work is the modelling on mesoscopic
scale for the numerical simulation of this process. The FTRP-model takes the material
behaviour both of matrix and the fabric reinforced organo-sheet under process
temperatures into account. For describing the experimentally observed phenomena
such as large deformations, fibre failure and the interactions between matrix
and fibres as well as between fibres themselves, the usage of conventional, purely
Lagrangian based FEM methods is limited. Therefore, the combination of contact-models
with advanced modelling approaches like Arbitrary-Lagrangian-Eulerian (ALE), Coupled-Eulerian-Lagrangian
(CEL) and Smooth-ParticleHydrodynamics (SPH) for the numerical simulation of the
clinching process are employed. The different approaches are compared with regard
to simulation feasibility, robustness and results accuracy. It is shown, that
the CEL approach represents the most promising approach to describe the clinching
process. '
author:
- first_name: B.
full_name: Gröger, B.
last_name: Gröger
- first_name: A.
full_name: Hornig, A.
last_name: Hornig
- first_name: A.
full_name: Hoog, A.
last_name: Hoog
- first_name: M.
full_name: Gude, M.
last_name: Gude
citation:
ama: 'Gröger B, Hornig A, Hoog A, Gude M. Modelling of thermally supported clinching
of fibre-reinforced thermoplastics: Approaches on mesoscale considering large
deformations and fibre failure. ESAFORM 2021 - 24th International Conference
on Material Forming. Published online 2021. doi:10.25518/esaform21.4293'
apa: 'Gröger, B., Hornig, A., Hoog, A., & Gude, M. (2021). Modelling of thermally
supported clinching of fibre-reinforced thermoplastics: Approaches on mesoscale
considering large deformations and fibre failure. ESAFORM 2021 - 24th International
Conference on Material Forming. https://doi.org/10.25518/esaform21.4293'
bibtex: '@article{Gröger_Hornig_Hoog_Gude_2021, title={Modelling of thermally supported
clinching of fibre-reinforced thermoplastics: Approaches on mesoscale considering
large deformations and fibre failure}, DOI={10.25518/esaform21.4293},
journal={ESAFORM 2021 - 24th International Conference on Material Forming}, author={Gröger,
B. and Hornig, A. and Hoog, A. and Gude, M.}, year={2021} }'
chicago: 'Gröger, B., A. Hornig, A. Hoog, and M. Gude. “Modelling of Thermally Supported
Clinching of Fibre-Reinforced Thermoplastics: Approaches on Mesoscale Considering
Large Deformations and Fibre Failure.” ESAFORM 2021 - 24th International Conference
on Material Forming, 2021. https://doi.org/10.25518/esaform21.4293.'
ieee: 'B. Gröger, A. Hornig, A. Hoog, and M. Gude, “Modelling of thermally supported
clinching of fibre-reinforced thermoplastics: Approaches on mesoscale considering
large deformations and fibre failure,” ESAFORM 2021 - 24th International Conference
on Material Forming, 2021, doi: 10.25518/esaform21.4293.'
mla: 'Gröger, B., et al. “Modelling of Thermally Supported Clinching of Fibre-Reinforced
Thermoplastics: Approaches on Mesoscale Considering Large Deformations and Fibre
Failure.” ESAFORM 2021 - 24th International Conference on Material Forming,
2021, doi:10.25518/esaform21.4293.'
short: B. Gröger, A. Hornig, A. Hoog, M. Gude, ESAFORM 2021 - 24th International
Conference on Material Forming (2021).
date_created: 2022-03-29T08:52:57Z
date_updated: 2023-01-02T11:50:35Z
department:
- _id: '630'
doi: 10.25518/esaform21.4293
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '137'
name: 'TRR 285 – A03: TRR 285 - Subproject A03'
publication: ESAFORM 2021 - 24th International Conference on Material Forming
status: public
title: 'Modelling of thermally supported clinching of fibre-reinforced thermoplastics:
Approaches on mesoscale considering large deformations and fibre failure'
type: journal_article
user_id: '14931'
year: '2021'
...