---
_id: '65535'
abstract:
- lang: eng
text: 'Side-channel attacks on elliptic curve cryptography (ECC) often assume
a white-box attacker who has detailed knowledge of the implementation choices
taken by the target implementation. Due to the complex and layered nature of ECC,
there are many choices that a developer makes to obtain a functional and interoperable
implementation. These include the curve model, coordinate system, addition formulas,
and the scalar multiplier, or lower-level details such as the finite-field multiplication
algorithm. This creates a gap between the attack requirements and a real-world
attacker that often only has black-box access to the target – i.e., has no access
to the source code nor knowledge of specific implementation choices made. Yet,
when the gap is closed, even real-world implementations of ECC succumb to side-channel
attacks, as evidenced by attacks such as TPM-Fail, Minerva, the Side Journey to
Titan, or TPMScan [MSE+20; JSS+20; RLM+21; SDB+24].We study this gap by first
analyzing open-source ECC libraries for insight into realworld implementation
choices. We then examine the space of all ECC implementations combinatorially.
Finally, we present a set of novel methods for automated reverse engineering of
black-box ECC implementations and release a documented and usable open-source
toolkit for side-channel analysis of ECC called pyecsca.Our methods turn attacks
around: instead of attempting to recover the private key, they attempt to recover
the implementation configuration given control over the private and public inputs.
We evaluate them on two simulation levels and study the effect of noise on their
performance. Our methods are able to 1) reverse-engineer the scalar multiplication
algorithm completely and 2) infer significant information about the coordinate
system and addition formulas used in a target implementation. Furthermore, they
can bypass coordinate and curve randomization countermeasures.'
author:
- first_name: Jan
full_name: Jancar, Jan
last_name: Jancar
- first_name: Vojtech
full_name: Suchanek, Vojtech
last_name: Suchanek
- first_name: Petr
full_name: Svenda, Petr
last_name: Svenda
- first_name: Vladimir
full_name: Sedlacek, Vladimir
last_name: Sedlacek
- first_name: Łukasz
full_name: Chmielewski, Łukasz
last_name: Chmielewski
citation:
ama: 'Jancar J, Suchanek V, Svenda P, Sedlacek V, Chmielewski Ł. pyecsca: Reverse
engineering black-box elliptic curve cryptography via side-channel analysis. IACR
Transactions on Cryptographic Hardware and Embedded Systems. 2024;2024(4):355-381.
doi:10.46586/tches.v2024.i4.355-381'
apa: 'Jancar, J., Suchanek, V., Svenda, P., Sedlacek, V., & Chmielewski, Ł.
(2024). pyecsca: Reverse engineering black-box elliptic curve cryptography via
side-channel analysis. IACR Transactions on Cryptographic Hardware and Embedded
Systems, 2024(4), 355–381. https://doi.org/10.46586/tches.v2024.i4.355-381'
bibtex: '@article{Jancar_Suchanek_Svenda_Sedlacek_Chmielewski_2024, title={pyecsca:
Reverse engineering black-box elliptic curve cryptography via side-channel analysis},
volume={2024}, DOI={10.46586/tches.v2024.i4.355-381},
number={4}, journal={IACR Transactions on Cryptographic Hardware and Embedded
Systems}, publisher={Universitatsbibliothek der Ruhr-Universitat Bochum}, author={Jancar,
Jan and Suchanek, Vojtech and Svenda, Petr and Sedlacek, Vladimir and Chmielewski,
Łukasz}, year={2024}, pages={355–381} }'
chicago: 'Jancar, Jan, Vojtech Suchanek, Petr Svenda, Vladimir Sedlacek, and Łukasz
Chmielewski. “Pyecsca: Reverse Engineering Black-Box Elliptic Curve Cryptography
via Side-Channel Analysis.” IACR Transactions on Cryptographic Hardware and
Embedded Systems 2024, no. 4 (2024): 355–81. https://doi.org/10.46586/tches.v2024.i4.355-381.'
ieee: 'J. Jancar, V. Suchanek, P. Svenda, V. Sedlacek, and Ł. Chmielewski, “pyecsca:
Reverse engineering black-box elliptic curve cryptography via side-channel analysis,”
IACR Transactions on Cryptographic Hardware and Embedded Systems, vol.
2024, no. 4, pp. 355–381, 2024, doi: 10.46586/tches.v2024.i4.355-381.'
mla: 'Jancar, Jan, et al. “Pyecsca: Reverse Engineering Black-Box Elliptic Curve
Cryptography via Side-Channel Analysis.” IACR Transactions on Cryptographic
Hardware and Embedded Systems, vol. 2024, no. 4, Universitatsbibliothek der
Ruhr-Universitat Bochum, 2024, pp. 355–81, doi:10.46586/tches.v2024.i4.355-381.'
short: J. Jancar, V. Suchanek, P. Svenda, V. Sedlacek, Ł. Chmielewski, IACR Transactions
on Cryptographic Hardware and Embedded Systems 2024 (2024) 355–381.
date_created: 2026-04-30T09:31:41Z
date_updated: 2026-04-30T09:32:37Z
doi: 10.46586/tches.v2024.i4.355-381
intvolume: ' 2024'
issue: '4'
page: 355-381
publication: IACR Transactions on Cryptographic Hardware and Embedded Systems
publication_identifier:
issn:
- 2569-2925
publication_status: published
publisher: Universitatsbibliothek der Ruhr-Universitat Bochum
status: public
title: 'pyecsca: Reverse engineering black-box elliptic curve cryptography via side-channel
analysis'
type: journal_article
user_id: '125442'
volume: 2024
year: '2024'
...
---
_id: '65534'
abstract:
- lang: eng
text: Cryptography secures our online interactions, transactions, and trust. To
achieve this goal, not only do the cryptographic primitives and protocols need
to be secure in theory, they also need to be securely implemented by cryptographic
library developers in practice. However, implementing cryptographic algorithms
securely is challenging, even for skilled professionals, which can lead to vulnerable
implementations, especially to side-channel attacks. For timing attacks, a severe
class of side-channel attacks, there exist a multitude of tools that are supposed
to help cryptographic library developers assess whether their code is vulnerable
to timing attacks. Previous work has established that despite an interest in writing
constant-time code, cryptographic library developers do not routinely use these
tools due to their general lack of usability. However, the precise factors affecting
the usability of these tools remain unexplored. While many of the tools are developed
in an academic context, we believe that it is worth exploring the factors that
contribute to or hinder their effective use by cryptographic library developers
[61]. To assess what contributes to and detracts from usability of tools that
verify constant-timeness (CT), we conducted a two-part usability study with 24
(post) graduate student participants on 6 tools across diverse tasks that approximate
real-world use cases for cryptographic library developers. We find that all studied
tools are affected by similar usability issues to varying degrees, with no tool
excelling in usability, and usability issues preventing their effective use. Based
on our results, we recommend that effective tools for verifying CT need usable
documentation, simple installation, easy to adapt examples, clear output corresponding
to CT violations, and minimal noninvasive code markup. We contribute first steps
to achieving these with limited academic resources, with our documentation, examples,
and installation scripts(1).
author:
- first_name: M
full_name: Fourn , M
last_name: 'Fourn '
- first_name: DD
full_name: Braga, DD
last_name: Braga
- first_name: J
full_name: Jancar, J
last_name: Jancar
- first_name: M
full_name: Sabt, M
last_name: Sabt
- first_name: P
full_name: Schwabe, P
last_name: Schwabe
- first_name: G
full_name: Barthe, G
last_name: Barthe
- first_name: PA
full_name: Fouque, PA
last_name: Fouque
- first_name: Y
full_name: Acar, Y
last_name: Acar
citation:
ama: 'Fourn M, Braga D, Jancar J, et al. “These results must be false”: A usability
evaluation of constant-time analysis tools. Published online 2024.'
apa: 'Fourn , M., Braga, D., Jancar, J., Sabt, M., Schwabe, P., Barthe, G., Fouque,
P., & Acar, Y. (2024). “These results must be false”: A usability evaluation
of constant-time analysis tools.'
bibtex: '@article{Fourn _Braga_Jancar_Sabt_Schwabe_Barthe_Fouque_Acar_2024, place={Berkeley},
title={“These results must be false”: A usability evaluation of constant-time
analysis tools}, publisher={Usenix Assoc}, author={Fourn , M and Braga, DD and
Jancar, J and Sabt, M and Schwabe, P and Barthe, G and Fouque, PA and Acar, Y},
year={2024} }'
chicago: 'Fourn , M, DD Braga, J Jancar, M Sabt, P Schwabe, G Barthe, PA Fouque,
and Y Acar. “‘These Results Must Be False’: A Usability Evaluation of Constant-Time
Analysis Tools,” 2024.'
ieee: 'M. Fourn et al., “‘These results must be false’: A usability evaluation
of constant-time analysis tools,” 2024.'
mla: 'Fourn , M., et al. “These Results Must Be False”: A Usability Evaluation
of Constant-Time Analysis Tools. Usenix Assoc, 2024.'
short: M. Fourn , D. Braga, J. Jancar, M. Sabt, P. Schwabe, G. Barthe, P. Fouque,
Y. Acar, (2024).
date_created: 2026-04-30T09:31:29Z
date_updated: 2026-04-30T09:32:34Z
language:
- iso: eng
place: Berkeley
publication_identifier:
issn:
- 978-1-939133-44-1
publication_status: published
publisher: Usenix Assoc
quality_controlled: '1'
status: public
title: '"These results must be false": A usability evaluation of constant-time analysis
tools'
type: journal_article
user_id: '125442'
year: '2024'
...
---
_id: '65536'
author:
- first_name: Adam
full_name: Janovsky, Adam
last_name: Janovsky
- first_name: Łukasz
full_name: Chmielewski, Łukasz
last_name: Chmielewski
- first_name: Petr
full_name: Svenda, Petr
last_name: Svenda
- first_name: Jan
full_name: Jancar, Jan
last_name: Jancar
- first_name: Vashek
full_name: Matyas, Vashek
last_name: Matyas
citation:
ama: 'Janovsky A, Chmielewski Ł, Svenda P, Jancar J, Matyas V. Chain of Trust: Unraveling
References Among Common Criteria Certified Products. In: IFIP Advances in Information
and Communication Technology. Springer Nature Switzerland; 2024. doi:10.1007/978-3-031-65175-5_14'
apa: 'Janovsky, A., Chmielewski, Ł., Svenda, P., Jancar, J., & Matyas, V. (2024).
Chain of Trust: Unraveling References Among Common Criteria Certified Products.
In IFIP Advances in Information and Communication Technology. Springer
Nature Switzerland. https://doi.org/10.1007/978-3-031-65175-5_14'
bibtex: '@inbook{Janovsky_Chmielewski_Svenda_Jancar_Matyas_2024, place={Cham}, title={Chain
of Trust: Unraveling References Among Common Criteria Certified Products}, DOI={10.1007/978-3-031-65175-5_14},
booktitle={IFIP Advances in Information and Communication Technology}, publisher={Springer
Nature Switzerland}, author={Janovsky, Adam and Chmielewski, Łukasz and Svenda,
Petr and Jancar, Jan and Matyas, Vashek}, year={2024} }'
chicago: 'Janovsky, Adam, Łukasz Chmielewski, Petr Svenda, Jan Jancar, and Vashek
Matyas. “Chain of Trust: Unraveling References Among Common Criteria Certified
Products.” In IFIP Advances in Information and Communication Technology.
Cham: Springer Nature Switzerland, 2024. https://doi.org/10.1007/978-3-031-65175-5_14.'
ieee: 'A. Janovsky, Ł. Chmielewski, P. Svenda, J. Jancar, and V. Matyas, “Chain
of Trust: Unraveling References Among Common Criteria Certified Products,” in
IFIP Advances in Information and Communication Technology, Cham: Springer
Nature Switzerland, 2024.'
mla: 'Janovsky, Adam, et al. “Chain of Trust: Unraveling References Among Common
Criteria Certified Products.” IFIP Advances in Information and Communication
Technology, Springer Nature Switzerland, 2024, doi:10.1007/978-3-031-65175-5_14.'
short: 'A. Janovsky, Ł. Chmielewski, P. Svenda, J. Jancar, V. Matyas, in: IFIP Advances
in Information and Communication Technology, Springer Nature Switzerland, Cham,
2024.'
date_created: 2026-04-30T09:31:48Z
date_updated: 2026-04-30T09:32:32Z
doi: 10.1007/978-3-031-65175-5_14
language:
- iso: eng
place: Cham
publication: IFIP Advances in Information and Communication Technology
publication_identifier:
isbn:
- '9783031651748'
- '9783031651755'
issn:
- 1868-4238
- 1868-422X
publication_status: published
publisher: Springer Nature Switzerland
status: public
title: 'Chain of Trust: Unraveling References Among Common Criteria Certified Products'
type: book_chapter
user_id: '125442'
year: '2024'
...
---
_id: '65527'
article_number: '103895'
author:
- first_name: Adam
full_name: Janovsky, Adam
last_name: Janovsky
- first_name: Jan
full_name: Jancar, Jan
last_name: Jancar
- first_name: Petr
full_name: Svenda, Petr
last_name: Svenda
- first_name: Łukasz
full_name: Chmielewski, Łukasz
last_name: Chmielewski
- first_name: Jiri
full_name: Michalik, Jiri
last_name: Michalik
- first_name: Vashek
full_name: Matyas, Vashek
last_name: Matyas
citation:
ama: 'Janovsky A, Jancar J, Svenda P, Chmielewski Ł, Michalik J, Matyas V. sec-certs:
Examining the security certification practice for better vulnerability mitigation.
Computers & Security. 2024;143. doi:10.1016/j.cose.2024.103895'
apa: 'Janovsky, A., Jancar, J., Svenda, P., Chmielewski, Ł., Michalik, J., &
Matyas, V. (2024). sec-certs: Examining the security certification practice for
better vulnerability mitigation. Computers & Security, 143,
Article 103895. https://doi.org/10.1016/j.cose.2024.103895'
bibtex: '@article{Janovsky_Jancar_Svenda_Chmielewski_Michalik_Matyas_2024, title={sec-certs:
Examining the security certification practice for better vulnerability mitigation},
volume={143}, DOI={10.1016/j.cose.2024.103895},
number={103895}, journal={Computers & Security}, publisher={Elsevier BV},
author={Janovsky, Adam and Jancar, Jan and Svenda, Petr and Chmielewski, Łukasz
and Michalik, Jiri and Matyas, Vashek}, year={2024} }'
chicago: 'Janovsky, Adam, Jan Jancar, Petr Svenda, Łukasz Chmielewski, Jiri Michalik,
and Vashek Matyas. “Sec-Certs: Examining the Security Certification Practice for
Better Vulnerability Mitigation.” Computers & Security 143 (2024).
https://doi.org/10.1016/j.cose.2024.103895.'
ieee: 'A. Janovsky, J. Jancar, P. Svenda, Ł. Chmielewski, J. Michalik, and V. Matyas,
“sec-certs: Examining the security certification practice for better vulnerability
mitigation,” Computers & Security, vol. 143, Art. no. 103895, 2024,
doi: 10.1016/j.cose.2024.103895.'
mla: 'Janovsky, Adam, et al. “Sec-Certs: Examining the Security Certification Practice
for Better Vulnerability Mitigation.” Computers & Security, vol.
143, 103895, Elsevier BV, 2024, doi:10.1016/j.cose.2024.103895.'
short: A. Janovsky, J. Jancar, P. Svenda, Ł. Chmielewski, J. Michalik, V. Matyas,
Computers & Security 143 (2024).
date_created: 2026-04-30T09:26:34Z
date_updated: 2026-04-30T09:32:22Z
doi: 10.1016/j.cose.2024.103895
intvolume: ' 143'
language:
- iso: eng
publication: Computers & Security
publication_identifier:
issn:
- 0167-4048
publication_status: published
publisher: Elsevier BV
status: public
title: 'sec-certs: Examining the security certification practice for better vulnerability
mitigation'
type: journal_article
user_id: '125442'
volume: 143
year: '2024'
...
---
_id: '62047'
author:
- first_name: Eileen
full_name: Reckmann, Eileen
id: '101166'
last_name: Reckmann
- first_name: Katrin
full_name: Temmen, Katrin
id: '30086'
last_name: Temmen
citation:
ama: 'Reckmann E, Temmen K. Erste Ergebnisse aus einer Interviewstudie mit Workshop-Moderierenden
mobiler Schülerlaborangebote an außerschulischen Lernorten. In: ; 2024.'
apa: Reckmann, E., & Temmen, K. (2024). Erste Ergebnisse aus einer Interviewstudie
mit Workshop-Moderierenden mobiler Schülerlaborangebote an außerschulischen Lernorten.
GDSU-Jahrestagung, Hannover.
bibtex: '@inproceedings{Reckmann_Temmen_2024, title={Erste Ergebnisse aus einer
Interviewstudie mit Workshop-Moderierenden mobiler Schülerlaborangebote an außerschulischen
Lernorten}, author={Reckmann, Eileen and Temmen, Katrin}, year={2024} }'
chicago: Reckmann, Eileen, and Katrin Temmen. “Erste Ergebnisse aus einer Interviewstudie
mit Workshop-Moderierenden mobiler Schülerlaborangebote an außerschulischen Lernorten,”
2024.
ieee: E. Reckmann and K. Temmen, “Erste Ergebnisse aus einer Interviewstudie mit
Workshop-Moderierenden mobiler Schülerlaborangebote an außerschulischen Lernorten,”
presented at the GDSU-Jahrestagung, Hannover, 2024.
mla: Reckmann, Eileen, and Katrin Temmen. Erste Ergebnisse aus einer Interviewstudie
mit Workshop-Moderierenden mobiler Schülerlaborangebote an außerschulischen Lernorten.
2024.
short: 'E. Reckmann, K. Temmen, in: 2024.'
conference:
end_date: 2024-03-09
location: Hannover
name: GDSU-Jahrestagung
start_date: 2024-03-07
date_created: 2025-11-03T10:12:06Z
date_updated: 2026-04-30T10:41:25Z
department:
- _id: '300'
language:
- iso: ger
status: public
title: Erste Ergebnisse aus einer Interviewstudie mit Workshop-Moderierenden mobiler
Schülerlaborangebote an außerschulischen Lernorten
type: conference_abstract
user_id: '101166'
year: '2024'
...
---
_id: '48484'
abstract:
- lang: eng
text: AbstractPrevious research indicates that
performing passes with a head fake in basketball leads to increased response initiation
times and errors as compared to performing a pass without a head fake. These so-called
fake production costs only occurred when not given the time to mentally prepare
the deceptive movement. In the current study, we investigated if extensive practice
could reduce the cognitive costs of producing a pass with head fake. Twenty-four
basketball novices participated in an experiment on five consecutive days. A visual
cue prompted participants to play a pass with or without a head fake either to
the left or right side. The cued action had to be executed after an interstimulus
interval (ISI) of either 0 ms, 400 ms, 800 ms or 1200 ms, allowing for different
movement preparation times. Results indicated higher response initiation times
(ITs) and error rates (ERs) for passes with head fakes for the short preparation
intervals (ISI 0 ms and 400 ms) on the first day but no difference for the longer
preparation intervals (ISI 800 ms and 1200 ms). After only one day of practice,
participants showed reduced fake production costs (for ISI 0 ms) and were even
able to eliminate these cognitive costs when given time to mentally prepare the
movement (for ISI 400 ms). Accordingly, physical practice can reduce the cognitive
costs associated with head-fake generation. This finding is discussed against
the background of the strengthening of stimulus response associations.
article_type: original
author:
- first_name: Nils Tobias
full_name: Böer, Nils Tobias
id: '52000'
last_name: Böer
orcid: 0000-0002-0236-7282
- first_name: Matthias
full_name: Weigelt, Matthias
id: '36388'
last_name: Weigelt
- first_name: Christoph
full_name: Schütz, Christoph
last_name: Schütz
- first_name: Iris
full_name: Güldenpenning, Iris
id: '52931'
last_name: Güldenpenning
orcid: 0000-0003-0549-5543
citation:
ama: Böer NT, Weigelt M, Schütz C, Güldenpenning I. Practice reduces the costs of
producing head fakes in basketball. Psychological Research. 2024;88:523-534.
doi:10.1007/s00426-023-01885-x
apa: Böer, N. T., Weigelt, M., Schütz, C., & Güldenpenning, I. (2024). Practice
reduces the costs of producing head fakes in basketball. Psychological Research,
88, 523–534. https://doi.org/10.1007/s00426-023-01885-x
bibtex: '@article{Böer_Weigelt_Schütz_Güldenpenning_2024, title={Practice reduces
the costs of producing head fakes in basketball}, volume={88}, DOI={10.1007/s00426-023-01885-x},
journal={Psychological Research}, publisher={Springer Science and Business Media
LLC}, author={Böer, Nils Tobias and Weigelt, Matthias and Schütz, Christoph and
Güldenpenning, Iris}, year={2024}, pages={523–534} }'
chicago: 'Böer, Nils Tobias, Matthias Weigelt, Christoph Schütz, and Iris Güldenpenning.
“Practice Reduces the Costs of Producing Head Fakes in Basketball.” Psychological
Research 88 (2024): 523–34. https://doi.org/10.1007/s00426-023-01885-x.'
ieee: 'N. T. Böer, M. Weigelt, C. Schütz, and I. Güldenpenning, “Practice reduces
the costs of producing head fakes in basketball,” Psychological Research,
vol. 88, pp. 523–534, 2024, doi: 10.1007/s00426-023-01885-x.'
mla: Böer, Nils Tobias, et al. “Practice Reduces the Costs of Producing Head Fakes
in Basketball.” Psychological Research, vol. 88, Springer Science and Business
Media LLC, 2024, pp. 523–34, doi:10.1007/s00426-023-01885-x.
short: N.T. Böer, M. Weigelt, C. Schütz, I. Güldenpenning, Psychological Research
88 (2024) 523–534.
date_created: 2023-10-26T09:57:43Z
date_updated: 2026-05-03T11:16:46Z
ddc:
- '150'
- '796'
department:
- _id: '17'
- _id: '266'
doi: 10.1007/s00426-023-01885-x
file:
- access_level: closed
content_type: application/pdf
creator: nboeer
date_created: 2025-11-06T13:32:52Z
date_updated: 2025-11-06T13:32:52Z
file_id: '62114'
file_name: Böer, Weigelt, Schütz, & Güldenpenning_2024_Practice reduces the costs
of producing head fakes in basketball.pdf
file_size: 898697
relation: main_file
success: 1
file_date_updated: 2025-11-06T13:32:52Z
has_accepted_license: '1'
intvolume: ' 88'
keyword:
- Arts and Humanities (miscellaneous)
- Developmental and Educational Psychology
- Experimental and Cognitive Psychology
- General Medicine
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://link.springer.com/article/10.1007/s00426-023-01885-x
oa: '1'
page: 523-534
publication: Psychological Research
publication_identifier:
issn:
- 0340-0727
- 1430-2772
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
related_material:
link:
- relation: research_data
url: https://osf.io/svjtz/files
status: public
title: Practice reduces the costs of producing head fakes in basketball
type: journal_article
user_id: '52000'
volume: 88
year: '2024'
...
---
_id: '53811'
abstract:
- lang: eng
text: Persistent security challenges plague DevOps teams due to a deficiency in
expertise regarding security tools and methods, as evidenced by frequent security
incidents. Existing maturity models fail to adequately address the specific needs
of DevOps teams. In response, this paper proposes "Security Belts," a novel maturity
model inspired by martial arts ranking systems. This model aims to assist DevOps
teams in enhancing their security capabilities by providing a structured approach,
starting with fundamental activities and progressing to more advanced techniques.
Drawing from the experiences of monitoring 21 teams, the paper presents lessons
learned and offers actionable advice for refining maturity models tailored to
software quality improvement.
author:
- first_name: Samira
full_name: Taaibi, Samira
id: '55800'
last_name: Taaibi
- first_name: Stefan
full_name: Dziwok, Stefan
id: '3901'
last_name: Dziwok
orcid: http://orcid.org/0000-0002-8679-6673
- first_name: Lars
full_name: Hermerschmidt, Lars
last_name: Hermerschmidt
- first_name: Thorsten
full_name: Koch, Thorsten
id: '13616'
last_name: Koch
- first_name: Sven
full_name: Merschjohann, Sven
id: '11394'
last_name: Merschjohann
- first_name: Mark
full_name: Vollmary, Mark
last_name: Vollmary
citation:
ama: 'Taaibi S, Dziwok S, Hermerschmidt L, Koch T, Merschjohann S, Vollmary M. Security
Belts: A Maturity Model for DevOps Teams to Increase the Software Security of
their Product - An Experience Report. In: AMCIS 2024 Proceedings. 13.'
apa: 'Taaibi, S., Dziwok, S., Hermerschmidt, L., Koch, T., Merschjohann, S., &
Vollmary, M. (n.d.). Security Belts: A Maturity Model for DevOps Teams to Increase
the Software Security of their Product - An Experience Report. AMCIS 2024 Proceedings.
13. 30th Americas Conference on Information Systems, Salt Lake City.'
bibtex: '@inproceedings{Taaibi_Dziwok_Hermerschmidt_Koch_Merschjohann_Vollmary,
title={Security Belts: A Maturity Model for DevOps Teams to Increase the Software
Security of their Product - An Experience Report}, booktitle={AMCIS 2024 Proceedings.
13.}, author={Taaibi, Samira and Dziwok, Stefan and Hermerschmidt, Lars and Koch,
Thorsten and Merschjohann, Sven and Vollmary, Mark} }'
chicago: 'Taaibi, Samira, Stefan Dziwok, Lars Hermerschmidt, Thorsten Koch, Sven
Merschjohann, and Mark Vollmary. “Security Belts: A Maturity Model for DevOps
Teams to Increase the Software Security of Their Product - An Experience Report.”
In AMCIS 2024 Proceedings. 13., n.d.'
ieee: 'S. Taaibi, S. Dziwok, L. Hermerschmidt, T. Koch, S. Merschjohann, and M.
Vollmary, “Security Belts: A Maturity Model for DevOps Teams to Increase the Software
Security of their Product - An Experience Report,” presented at the 30th Americas
Conference on Information Systems, Salt Lake City.'
mla: 'Taaibi, Samira, et al. “Security Belts: A Maturity Model for DevOps Teams
to Increase the Software Security of Their Product - An Experience Report.” AMCIS
2024 Proceedings. 13.'
short: 'S. Taaibi, S. Dziwok, L. Hermerschmidt, T. Koch, S. Merschjohann, M. Vollmary,
in: AMCIS 2024 Proceedings. 13., n.d.'
conference:
end_date: 2024-08-17
location: Salt Lake City
name: ' 30th Americas Conference on Information Systems'
start_date: 2024-08-15
date_created: 2024-05-02T08:57:52Z
date_updated: 2026-05-08T03:26:03Z
ddc:
- '000'
department:
- _id: '662'
file:
- access_level: closed
content_type: application/pdf
creator: staaibi
date_created: 2024-05-02T08:54:21Z
date_updated: 2024-05-02T08:54:21Z
file_id: '53812'
file_name: AMCIS2024_final_submission_maturity model security belt paper.pdf
file_size: 540990
relation: main_file
success: 1
file_date_updated: 2024-05-02T08:54:21Z
has_accepted_license: '1'
keyword:
- Software security
- maturity model
language:
- iso: eng
publication: AMCIS 2024 Proceedings. 13.
publication_status: accepted
status: public
title: 'Security Belts: A Maturity Model for DevOps Teams to Increase the Software
Security of their Product - An Experience Report'
type: conference
user_id: '55800'
year: '2024'
...
---
_id: '65592'
author:
- first_name: Karina
full_name: Pauls, Karina
id: '78235'
last_name: Pauls
- first_name: Thomas
full_name: Musehold, Thomas
last_name: Musehold
citation:
ama: 'Pauls K, Musehold T. 3D-Druck in Kunst und Lehre - Thomas Musehold und Karina
Pauls im Gespräch. In: Pauls K, ed. Schnittstelle Kunstunterricht: Skulptur
- Material - Prozess. ; 2024.'
apa: 'Pauls, K., & Musehold, T. (2024). 3D-Druck in Kunst und Lehre - Thomas
Musehold und Karina Pauls im Gespräch. In K. Pauls (Ed.), Schnittstelle Kunstunterricht:
Skulptur - Material - Prozess.'
bibtex: '@inbook{Pauls_Musehold_2024, title={3D-Druck in Kunst und Lehre - Thomas
Musehold und Karina Pauls im Gespräch}, booktitle={Schnittstelle Kunstunterricht:
Skulptur - Material - Prozess}, author={Pauls, Karina and Musehold, Thomas}, editor={Pauls,
Karina}, year={2024} }'
chicago: 'Pauls, Karina, and Thomas Musehold. “3D-Druck in Kunst und Lehre - Thomas
Musehold und Karina Pauls im Gespräch.” In Schnittstelle Kunstunterricht: Skulptur
- Material - Prozess, edited by Karina Pauls, 2024.'
ieee: 'K. Pauls and T. Musehold, “3D-Druck in Kunst und Lehre - Thomas Musehold
und Karina Pauls im Gespräch,” in Schnittstelle Kunstunterricht: Skulptur -
Material - Prozess, K. Pauls, Ed. 2024.'
mla: 'Pauls, Karina, and Thomas Musehold. “3D-Druck in Kunst und Lehre - Thomas
Musehold und Karina Pauls im Gespräch.” Schnittstelle Kunstunterricht: Skulptur
- Material - Prozess, edited by Karina Pauls, 2024.'
short: 'K. Pauls, T. Musehold, in: K. Pauls (Ed.), Schnittstelle Kunstunterricht:
Skulptur - Material - Prozess, 2024.'
date_created: 2026-05-08T12:57:17Z
date_updated: 2026-05-08T12:57:33Z
editor:
- first_name: Karina
full_name: Pauls, Karina
last_name: Pauls
language:
- iso: ger
publication: 'Schnittstelle Kunstunterricht: Skulptur - Material - Prozess'
publication_identifier:
isbn:
- '9783763977253'
publication_status: published
status: public
title: 3D-Druck in Kunst und Lehre - Thomas Musehold und Karina Pauls im Gespräch
type: book_chapter
user_id: '78235'
year: '2024'
...
---
_id: '65590'
author:
- first_name: Karina
full_name: Pauls, Karina
id: '78235'
last_name: Pauls
citation:
ama: 'Pauls K. Skulptur und Prozesse im Material. In: Pauls K, ed. Schnittstelle
Kunstunterricht: Skulptur - Material - Prozess. ; 2024. doi:10.3278/9783763977246'
apa: 'Pauls, K. (2024). Skulptur und Prozesse im Material. In K. Pauls (Ed.), Schnittstelle
Kunstunterricht: Skulptur - Material - Prozess. https://doi.org/10.3278/9783763977246'
bibtex: '@inbook{Pauls_2024, title={Skulptur und Prozesse im Material}, DOI={10.3278/9783763977246}, booktitle={Schnittstelle
Kunstunterricht: Skulptur - Material - Prozess}, author={Pauls, Karina}, editor={Pauls,
Karina}, year={2024} }'
chicago: 'Pauls, Karina. “Skulptur und Prozesse im Material.” In Schnittstelle
Kunstunterricht: Skulptur - Material - Prozess, edited by Karina Pauls, 2024.
https://doi.org/10.3278/9783763977246.'
ieee: 'K. Pauls, “Skulptur und Prozesse im Material,” in Schnittstelle Kunstunterricht:
Skulptur - Material - Prozess, K. Pauls, Ed. 2024.'
mla: 'Pauls, Karina. “Skulptur und Prozesse im Material.” Schnittstelle Kunstunterricht:
Skulptur - Material - Prozess, edited by Karina Pauls, 2024, doi:10.3278/9783763977246.'
short: 'K. Pauls, in: K. Pauls (Ed.), Schnittstelle Kunstunterricht: Skulptur -
Material - Prozess, 2024.'
date_created: 2026-05-08T12:51:23Z
date_updated: 2026-05-08T12:51:36Z
doi: 10.3278/9783763977246
editor:
- first_name: Karina
full_name: Pauls, Karina
last_name: Pauls
language:
- iso: ger
publication: 'Schnittstelle Kunstunterricht: Skulptur - Material - Prozess'
publication_identifier:
isbn:
- '9783763977253'
publication_status: published
status: public
title: Skulptur und Prozesse im Material
type: book_chapter
user_id: '78235'
year: '2024'
...
---
_id: '65591'
author:
- first_name: Karina
full_name: Pauls, Karina
id: '78235'
last_name: Pauls
citation:
ama: 'Pauls K. Beispiel aus der Lehrpraxis: Keramik + X. In: Pauls K, ed. Schnittstelle
Kunstunterricht: Skulptur - Material - Prozess. ; 2024.'
apa: 'Pauls, K. (2024). Beispiel aus der Lehrpraxis: Keramik + X. In K. Pauls (Ed.),
Schnittstelle Kunstunterricht: Skulptur - Material - Prozess.'
bibtex: '@inbook{Pauls_2024, title={Beispiel aus der Lehrpraxis: Keramik + X}, booktitle={Schnittstelle
Kunstunterricht: Skulptur - Material - Prozess}, author={Pauls, Karina}, editor={Pauls,
Karina}, year={2024} }'
chicago: 'Pauls, Karina. “Beispiel aus der Lehrpraxis: Keramik + X.” In Schnittstelle
Kunstunterricht: Skulptur - Material - Prozess, edited by Karina Pauls, 2024.'
ieee: 'K. Pauls, “Beispiel aus der Lehrpraxis: Keramik + X,” in Schnittstelle
Kunstunterricht: Skulptur - Material - Prozess, K. Pauls, Ed. 2024.'
mla: 'Pauls, Karina. “Beispiel aus der Lehrpraxis: Keramik + X.” Schnittstelle
Kunstunterricht: Skulptur - Material - Prozess, edited by Karina Pauls, 2024.'
short: 'K. Pauls, in: K. Pauls (Ed.), Schnittstelle Kunstunterricht: Skulptur -
Material - Prozess, 2024.'
date_created: 2026-05-08T12:54:52Z
date_updated: 2026-05-08T12:57:36Z
editor:
- first_name: Karina
full_name: Pauls, Karina
last_name: Pauls
language:
- iso: ger
publication: 'Schnittstelle Kunstunterricht: Skulptur - Material - Prozess'
publication_identifier:
isbn:
- '9783763977253'
publication_status: published
status: public
title: 'Beispiel aus der Lehrpraxis: Keramik + X'
type: book_chapter
user_id: '78235'
year: '2024'
...
---
_id: '65589'
citation:
ama: 'Pauls K, ed. Schnittstelle Kunstunterricht: Skulptur - Material - Prozess.;
2024. doi:10.3278/9783763977246'
apa: 'Pauls, K. (Ed.). (2024). Schnittstelle Kunstunterricht: Skulptur - Material
- Prozess. https://doi.org/10.3278/9783763977246'
bibtex: '@book{Pauls_2024, title={Schnittstelle Kunstunterricht: Skulptur - Material
- Prozess}, DOI={10.3278/9783763977246},
year={2024} }'
chicago: 'Pauls, Karina, ed. Schnittstelle Kunstunterricht: Skulptur - Material
- Prozess, 2024. https://doi.org/10.3278/9783763977246.'
ieee: 'K. Pauls, Ed., Schnittstelle Kunstunterricht: Skulptur - Material - Prozess.
2024.'
mla: 'Pauls, Karina, editor. Schnittstelle Kunstunterricht: Skulptur - Material
- Prozess. 2024, doi:10.3278/9783763977246.'
short: 'K. Pauls, ed., Schnittstelle Kunstunterricht: Skulptur - Material - Prozess,
2024.'
date_created: 2026-05-08T12:48:05Z
date_updated: 2026-05-08T12:48:17Z
doi: 10.3278/9783763977246
editor:
- first_name: Karina
full_name: Pauls, Karina
last_name: Pauls
language:
- iso: ger
publication_identifier:
isbn:
- '9783763977253'
publication_status: published
status: public
title: 'Schnittstelle Kunstunterricht: Skulptur - Material - Prozess'
type: book_editor
user_id: '78235'
year: '2024'
...
---
_id: '57860'
abstract:
- lang: eng
text: BloKK-Beitrag für das ZeKK, 07.06.2024
author:
- first_name: Sarah
full_name: Lebock, Sarah
id: '53425'
last_name: Lebock
orcid: 0009-0005-7485-1902
citation:
ama: Lebock S. “Auf der Suche nach Frieden.”; 2024.
apa: Lebock, S. (2024). “Auf der Suche nach Frieden.”
bibtex: '@book{Lebock_2024, place={BloKK-Beitrag für das ZeKK, 07.06.2024}, title={“Auf
der Suche nach Frieden”}, author={Lebock, Sarah}, year={2024} }'
chicago: Lebock, Sarah. “Auf der Suche nach Frieden.” BloKK-Beitrag für das
ZeKK, 07.06.2024, 2024.
ieee: S. Lebock, “Auf der Suche nach Frieden.” BloKK-Beitrag für das ZeKK,
07.06.2024, 2024.
mla: Lebock, Sarah. “Auf der Suche nach Frieden.” 2024.
short: S. Lebock, “Auf der Suche nach Frieden,” BloKK-Beitrag für das ZeKK, 07.06.2024,
2024.
date_created: 2024-12-24T02:26:31Z
date_updated: 2026-05-10T12:04:07Z
department:
- _id: '550'
language:
- iso: ger
main_file_link:
- url: https://blogs.uni-paderborn.de/zekkblog/2024/06/07/auf-der-suche-nach-frieden/
place: BloKK-Beitrag für das ZeKK, 07.06.2024
status: public
title: '"Auf der Suche nach Frieden"'
type: misc
user_id: '53425'
year: '2024'
...
---
_id: '56078'
author:
- first_name: Birgit
full_name: Eickelmann, Birgit
id: '40387'
last_name: Eickelmann
orcid: 0000-0001-6124-746X
- first_name: Julia
full_name: Gerick, Julia
last_name: Gerick
- first_name: Uta
full_name: Hauck-Thum, Uta
last_name: Hauck-Thum
- first_name: Kai
full_name: Maaz, Kai
last_name: Maaz
citation:
ama: Eickelmann B, Gerick J, Hauck-Thum U, Maaz K. Navigator Bildung Digitalisierung.
Konzeptionierung und Orientierung zum Stand der digitalen Transformation im schulischen
Bildungsbereich in Deutschland. Forum Bildung Digitalisierung e. V; 2024.
apa: Eickelmann, B., Gerick, J., Hauck-Thum, U., & Maaz, K. (2024). Navigator
Bildung Digitalisierung. Konzeptionierung und Orientierung zum Stand der digitalen
Transformation im schulischen Bildungsbereich in Deutschland. Forum Bildung
Digitalisierung e. V.
bibtex: '@book{Eickelmann_Gerick_Hauck-Thum_Maaz_2024, place={Berlin}, title={Navigator
Bildung Digitalisierung. Konzeptionierung und Orientierung zum Stand der digitalen
Transformation im schulischen Bildungsbereich in Deutschland}, publisher={Forum
Bildung Digitalisierung e. V}, author={Eickelmann, Birgit and Gerick, Julia and
Hauck-Thum, Uta and Maaz, Kai}, year={2024} }'
chicago: 'Eickelmann, Birgit, Julia Gerick, Uta Hauck-Thum, and Kai Maaz. Navigator
Bildung Digitalisierung. Konzeptionierung und Orientierung zum Stand der digitalen
Transformation im schulischen Bildungsbereich in Deutschland. Berlin: Forum
Bildung Digitalisierung e. V, 2024.'
ieee: 'B. Eickelmann, J. Gerick, U. Hauck-Thum, and K. Maaz, Navigator Bildung
Digitalisierung. Konzeptionierung und Orientierung zum Stand der digitalen Transformation
im schulischen Bildungsbereich in Deutschland. Berlin: Forum Bildung Digitalisierung
e. V, 2024.'
mla: Eickelmann, Birgit, et al. Navigator Bildung Digitalisierung. Konzeptionierung
und Orientierung zum Stand der digitalen Transformation im schulischen Bildungsbereich
in Deutschland. Forum Bildung Digitalisierung e. V, 2024.
short: B. Eickelmann, J. Gerick, U. Hauck-Thum, K. Maaz, Navigator Bildung Digitalisierung.
Konzeptionierung und Orientierung zum Stand der digitalen Transformation im schulischen
Bildungsbereich in Deutschland, Forum Bildung Digitalisierung e. V, Berlin, 2024.
date_created: 2024-09-06T06:41:07Z
date_updated: 2026-05-11T07:44:55Z
department:
- _id: '462'
language:
- iso: ger
main_file_link:
- url: https://www.forumbd.de/wp-content/uploads/2026/04/navigator-bildung-digitalisierung.pdf
page: '139'
place: Berlin
publication_status: published
publisher: Forum Bildung Digitalisierung e. V
status: public
title: Navigator Bildung Digitalisierung. Konzeptionierung und Orientierung zum Stand
der digitalen Transformation im schulischen Bildungsbereich in Deutschland
type: book
user_id: '40387'
year: '2024'
...
---
_id: '54650'
abstract:
- lang: eng
text: Abstract. Reducing the weight of vehicles can significantly lower
the energy or fuel consumed and thus the emissions during operation. One possibility
to assess this is the use of a property adapted multi-material systems containing
high strength steel, light metals like aluminium or magnesium and fibre reinforced
plastics. While expanding the number of materials used new challenges arise for
the production and furthermore the joining technology to manufacture the vehicle
made of the multi-material systems. One approach to overcome these challenges
is to use innovative and adaptable joining techniques which allows the manufacturing
of joints of different material combinations. Extensive research activities on
the two stage thermo-mechanical joining process with adaptable joining elements
was able to demonstrate the great potentials in terms of joining dissimilar materials
with good strength. The previously kinematic and path-based fabrication of auxiliary
joining elements is modified in this publication to a form-based approach with
a perspective of establishing an efficient process chain using easily and cheaply
available rods. Based on the new approach to produce the auxiliary joining elements,
it can be demonstrated that a reproducible production of the geometry is possible
for the investigated steel as well as aluminium material.
author:
- first_name: Thomas
full_name: Borgert, Thomas
id: '83141'
last_name: Borgert
- first_name: Ansgar Bernhard
full_name: Nordieker, Ansgar Bernhard
id: '88725'
last_name: Nordieker
- first_name: Werner
full_name: Homberg, Werner
id: '233'
last_name: Homberg
citation:
ama: 'Borgert T, Nordieker AB, Homberg W. Form-based manufacturing of aluminium
and steel auxiliary joining elements as the basis for an efficient joining operation.
In: Materials Research Proceedings. Materials Research Forum LLC; 2024.
doi:10.21741/9781644903131-180'
apa: Borgert, T., Nordieker, A. B., & Homberg, W. (2024). Form-based manufacturing
of aluminium and steel auxiliary joining elements as the basis for an efficient
joining operation. Materials Research Proceedings. ESAFORM 2024, Toulouse.
https://doi.org/10.21741/9781644903131-180
bibtex: '@inproceedings{Borgert_Nordieker_Homberg_2024, title={Form-based manufacturing
of aluminium and steel auxiliary joining elements as the basis for an efficient
joining operation}, DOI={10.21741/9781644903131-180},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Borgert, Thomas and Nordieker, Ansgar Bernhard and Homberg, Werner},
year={2024} }'
chicago: Borgert, Thomas, Ansgar Bernhard Nordieker, and Werner Homberg. “Form-Based
Manufacturing of Aluminium and Steel Auxiliary Joining Elements as the Basis for
an Efficient Joining Operation.” In Materials Research Proceedings. Materials
Research Forum LLC, 2024. https://doi.org/10.21741/9781644903131-180.
ieee: 'T. Borgert, A. B. Nordieker, and W. Homberg, “Form-based manufacturing of
aluminium and steel auxiliary joining elements as the basis for an efficient joining
operation,” presented at the ESAFORM 2024, Toulouse, 2024, doi: 10.21741/9781644903131-180.'
mla: Borgert, Thomas, et al. “Form-Based Manufacturing of Aluminium and Steel Auxiliary
Joining Elements as the Basis for an Efficient Joining Operation.” Materials
Research Proceedings, Materials Research Forum LLC, 2024, doi:10.21741/9781644903131-180.
short: 'T. Borgert, A.B. Nordieker, W. Homberg, in: Materials Research Proceedings,
Materials Research Forum LLC, 2024.'
conference:
location: Toulouse
name: ESAFORM 2024
date_created: 2024-06-07T09:38:45Z
date_updated: 2026-05-12T11:56:47Z
department:
- _id: '156'
doi: 10.21741/9781644903131-180
language:
- iso: eng
project:
- _id: '133'
name: TRR 285 - Project Area C
- _id: '147'
name: TRR 285 - Subproject C03
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
status: public
title: Form-based manufacturing of aluminium and steel auxiliary joining elements
as the basis for an efficient joining operation
type: conference
user_id: '7850'
year: '2024'
...
---
_id: '54649'
article_number: '100185'
author:
- first_name: Thomas
full_name: Borgert, Thomas
id: '83141'
last_name: Borgert
- first_name: Ansgar Bernhard
full_name: Nordieker, Ansgar Bernhard
id: '88725'
last_name: Nordieker
- first_name: Eugen
full_name: Wiens, Eugen
id: '7888'
last_name: Wiens
- first_name: Werner
full_name: Homberg, Werner
id: '233'
last_name: Homberg
citation:
ama: Borgert T, Nordieker AB, Wiens E, Homberg W. Investigations to improve the
tool life during thermomechanical and incremental forming of steel auxiliary joining
elements. Journal of Advanced Joining Processes. 2024;9. doi:10.1016/j.jajp.2024.100185
apa: Borgert, T., Nordieker, A. B., Wiens, E., & Homberg, W. (2024). Investigations
to improve the tool life during thermomechanical and incremental forming of steel
auxiliary joining elements. Journal of Advanced Joining Processes, 9,
Article 100185. https://doi.org/10.1016/j.jajp.2024.100185
bibtex: '@article{Borgert_Nordieker_Wiens_Homberg_2024, title={Investigations to
improve the tool life during thermomechanical and incremental forming of steel
auxiliary joining elements}, volume={9}, DOI={10.1016/j.jajp.2024.100185},
number={100185}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier
BV}, author={Borgert, Thomas and Nordieker, Ansgar Bernhard and Wiens, Eugen and
Homberg, Werner}, year={2024} }'
chicago: Borgert, Thomas, Ansgar Bernhard Nordieker, Eugen Wiens, and Werner Homberg.
“Investigations to Improve the Tool Life during Thermomechanical and Incremental
Forming of Steel Auxiliary Joining Elements.” Journal of Advanced Joining Processes
9 (2024). https://doi.org/10.1016/j.jajp.2024.100185.
ieee: 'T. Borgert, A. B. Nordieker, E. Wiens, and W. Homberg, “Investigations to
improve the tool life during thermomechanical and incremental forming of steel
auxiliary joining elements,” Journal of Advanced Joining Processes, vol.
9, Art. no. 100185, 2024, doi: 10.1016/j.jajp.2024.100185.'
mla: Borgert, Thomas, et al. “Investigations to Improve the Tool Life during Thermomechanical
and Incremental Forming of Steel Auxiliary Joining Elements.” Journal of Advanced
Joining Processes, vol. 9, 100185, Elsevier BV, 2024, doi:10.1016/j.jajp.2024.100185.
short: T. Borgert, A.B. Nordieker, E. Wiens, W. Homberg, Journal of Advanced Joining
Processes 9 (2024).
date_created: 2024-06-07T09:31:59Z
date_updated: 2026-05-12T11:56:15Z
department:
- _id: '156'
doi: 10.1016/j.jajp.2024.100185
intvolume: ' 9'
language:
- iso: eng
project:
- _id: '133'
name: TRR 285 - Project Area C
- _id: '147'
name: TRR 285 - Subproject C03
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: Journal of Advanced Joining Processes
publication_identifier:
issn:
- 2666-3309
publication_status: published
publisher: Elsevier BV
status: public
title: Investigations to improve the tool life during thermomechanical and incremental
forming of steel auxiliary joining elements
type: journal_article
user_id: '7850'
volume: 9
year: '2024'
...
---
_id: '61797'
author:
- first_name: Katharina
full_name: Hollmer, Katharina
id: '104582'
last_name: Hollmer
- first_name: Martin
full_name: Kuczyk, Martin
last_name: Kuczyk
- first_name: Johannes
full_name: Friedlein, Johannes
last_name: Friedlein
- first_name: Julia
full_name: Mergheim, Julia
last_name: Mergheim
- first_name: Paul
full_name: Steinmann, Paul
last_name: Steinmann
- first_name: Martina
full_name: Zimmermann, Martina
last_name: Zimmermann
citation:
ama: 'Hollmer K, Kuczyk M, Friedlein J, Mergheim J, Steinmann P, Zimmermann M. Charakterisierung
des Verformungszustandes gleichartiger Stahl-Stahl-Clinchverbindungen durch Anwendung
quantitativer Bildanalyse . In: ; 2024.'
apa: Hollmer, K., Kuczyk, M., Friedlein, J., Mergheim, J., Steinmann, P., &
Zimmermann, M. (2024). Charakterisierung des Verformungszustandes gleichartiger
Stahl-Stahl-Clinchverbindungen durch Anwendung quantitativer Bildanalyse .
bibtex: '@inproceedings{Hollmer_Kuczyk_Friedlein_Mergheim_Steinmann_Zimmermann_2024,
title={Charakterisierung des Verformungszustandes gleichartiger Stahl-Stahl-Clinchverbindungen
durch Anwendung quantitativer Bildanalyse }, author={Hollmer, Katharina and Kuczyk,
Martin and Friedlein, Johannes and Mergheim, Julia and Steinmann, Paul and Zimmermann,
Martina}, year={2024} }'
chicago: Hollmer, Katharina, Martin Kuczyk, Johannes Friedlein, Julia Mergheim,
Paul Steinmann, and Martina Zimmermann. “Charakterisierung Des Verformungszustandes
Gleichartiger Stahl-Stahl-Clinchverbindungen Durch Anwendung Quantitativer Bildanalyse
,” 2024.
ieee: K. Hollmer, M. Kuczyk, J. Friedlein, J. Mergheim, P. Steinmann, and M. Zimmermann,
“Charakterisierung des Verformungszustandes gleichartiger Stahl-Stahl-Clinchverbindungen
durch Anwendung quantitativer Bildanalyse ,” 2024.
mla: Hollmer, Katharina, et al. Charakterisierung Des Verformungszustandes Gleichartiger
Stahl-Stahl-Clinchverbindungen Durch Anwendung Quantitativer Bildanalyse .
2024.
short: 'K. Hollmer, M. Kuczyk, J. Friedlein, J. Mergheim, P. Steinmann, M. Zimmermann,
in: 2024.'
date_created: 2025-10-13T15:16:18Z
date_updated: 2026-05-12T13:30:16Z
language:
- iso: eng
project:
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '141'
name: TRR 285 - Subproject B02
- _id: '139'
name: TRR 285 - Subproject A05
- _id: '132'
name: TRR 285 - Project Area B
- _id: '131'
name: TRR 285 - Project Area A
status: public
title: 'Charakterisierung des Verformungszustandes gleichartiger Stahl-Stahl-Clinchverbindungen
durch Anwendung quantitativer Bildanalyse '
type: conference
user_id: '7850'
year: '2024'
...
---
_id: '60645'
abstract:
- lang: ger
text: Die Wandlungsfähigkeit einer Prozesskette erfordert Fügeverbindungen mit gezielt
einstellbaren mechanischen, elektrischen, thermischen oder chemischen Eigenschaften.
Dieser Beitrag beschreibt die Untersuchungen, inwiefern beim Clinchen zweier Bleche
aus der ausscheidungshärtbaren Aluminiumlegierung EN AW-6014 bereits auf Basis
der Prozessüberwachung des Kraft-Weg-Verlaufs bzw. des sich daraus ergebenden
Energieeintrags auf die mechanischen und elektrischen Eigenschaften der Fügeverbindung
geschlossen werden kann. An einer ausgewählten Fügeaufgabe werden im Stufenversuch
die gegenseitigen Abhängigkeiten der einzelnen Einflussgrößen sowie des Wärmebehandlungszustands
aufgezeigt. Dabei wird zwischen den Bindemechanismen Formschluss und Kraftschluss
unterschieden. Die Formschlusskomponente wird anhand der geometrischen Kenngrößen
wie Bodendicke, Halsdicke und Hinterschnitt in Mikroskopieuntersuchungen an Schliffbildern
und den mechanischen Eigenschaften der Fügeverbindung untersucht, die im Scherzug-
und Kopfzugversuch bestimmt werden. Dazu erfolgt zudem die Charakterisierung der
Versagensbilder. Zur Quantifizierung der Kraftschlusskomponente der Fügeverbindung
werden das Losbrechmoment im Torsionsversuch und der elektrische Widerstand mittels
Vier-Leiter-Methode ermittelt und korreliert.
author:
- first_name: Stephan
full_name: Lüder, Stephan
id: '104468'
last_name: Lüder
orcid: https://orcid.org/0000-0002-9086-3031
- first_name: Jan
full_name: Kalich, Jan
last_name: Kalich
- first_name: Hannes
full_name: Oesterle, Hannes
last_name: Oesterle
- first_name: Hans Christian
full_name: Schmale, Hans Christian
last_name: Schmale
citation:
ama: 'Lüder S, Kalich J, Oesterle H, Schmale HC. Prozessüberwachte Eigenschaftseinstellung
beim Clinchen der ausscheidungshärtbaren Aluminiumlegierung EN AW-6014. In: Krupp
U, Steller I, Stahlinstitut VDEh, eds. Tagung Werkstoffprüfung 2024: Werkstoffe
und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung.
; 2024:205-210.'
apa: 'Lüder, S., Kalich, J., Oesterle, H., & Schmale, H. C. (2024). Prozessüberwachte
Eigenschaftseinstellung beim Clinchen der ausscheidungshärtbaren Aluminiumlegierung
EN AW-6014. In U. Krupp, I. Steller, & Stahlinstitut VDEh (Eds.), Tagung
Werkstoffprüfung 2024: Werkstoffe und Bauteile auf dem Prüfstand, Prüftechnik
– Kennwertermittlung – Schadensvermeidung (pp. 205–210).'
bibtex: '@inproceedings{Lüder_Kalich_Oesterle_Schmale_2024, place={Düsseldorf},
title={Prozessüberwachte Eigenschaftseinstellung beim Clinchen der ausscheidungshärtbaren
Aluminiumlegierung EN AW-6014}, booktitle={Tagung Werkstoffprüfung 2024: Werkstoffe
und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung},
author={Lüder, Stephan and Kalich, Jan and Oesterle, Hannes and Schmale, Hans
Christian}, editor={Krupp, Ulrich and Steller, Ingo and Stahlinstitut VDEh}, year={2024},
pages={205–210} }'
chicago: 'Lüder, Stephan, Jan Kalich, Hannes Oesterle, and Hans Christian Schmale.
“Prozessüberwachte Eigenschaftseinstellung beim Clinchen der ausscheidungshärtbaren
Aluminiumlegierung EN AW-6014.” In Tagung Werkstoffprüfung 2024: Werkstoffe
und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung,
edited by Ulrich Krupp, Ingo Steller, and Stahlinstitut VDEh, 205–10. Düsseldorf,
2024.'
ieee: 'S. Lüder, J. Kalich, H. Oesterle, and H. C. Schmale, “Prozessüberwachte Eigenschaftseinstellung
beim Clinchen der ausscheidungshärtbaren Aluminiumlegierung EN AW-6014,” in Tagung
Werkstoffprüfung 2024: Werkstoffe und Bauteile auf dem Prüfstand, Prüftechnik
– Kennwertermittlung – Schadensvermeidung, Krefeld, 2024, pp. 205–210.'
mla: 'Lüder, Stephan, et al. “Prozessüberwachte Eigenschaftseinstellung beim Clinchen
der ausscheidungshärtbaren Aluminiumlegierung EN AW-6014.” Tagung Werkstoffprüfung
2024: Werkstoffe und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung
– Schadensvermeidung, edited by Ulrich Krupp et al., 2024, pp. 205–10.'
short: 'S. Lüder, J. Kalich, H. Oesterle, H.C. Schmale, in: U. Krupp, I. Steller,
Stahlinstitut VDEh (Eds.), Tagung Werkstoffprüfung 2024: Werkstoffe und Bauteile
auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung, Düsseldorf,
2024, pp. 205–210.'
conference:
end_date: 2024-12-06
location: Krefeld
name: Tagung Werkstoffprüfung 2024
start_date: 2024-12-05
corporate_editor:
- Stahlinstitut VDEh
date_created: 2025-07-18T09:01:25Z
date_updated: 2026-05-12T13:37:10Z
department:
- _id: '630'
editor:
- first_name: Ulrich
full_name: Krupp, Ulrich
last_name: Krupp
- first_name: Ingo
full_name: Steller, Ingo
last_name: Steller
extern: '1'
keyword:
- Clinchen
- Aluminium
- Stufensetzversuch
- Bindemechanismus
- Formschluss
- Kraftschluss
- Zugversuch
- Torsionsversuch
- Widerstandsmessung
language:
- iso: ger
page: 205-210
place: Düsseldorf
project:
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '138'
name: 'TRR 285 – A04: TRR 285 - Subproject A04'
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: 'Tagung Werkstoffprüfung 2024: Werkstoffe und Bauteile auf dem Prüfstand,
Prüftechnik – Kennwertermittlung – Schadensvermeidung'
publication_identifier:
isbn:
- 978-3-941269-97-2
publication_status: published
quality_controlled: '1'
status: public
title: Prozessüberwachte Eigenschaftseinstellung beim Clinchen der ausscheidungshärtbaren
Aluminiumlegierung EN AW-6014
type: conference
user_id: '7850'
year: '2024'
...
---
_id: '57742'
article_type: original
author:
- first_name: Max
full_name: Böhnke, Max
id: '45779'
last_name: Böhnke
- first_name: Christian Roman
full_name: Bielak, Christian Roman
id: '34782'
last_name: Bielak
- first_name: Robert
full_name: Beck, Robert
id: '38279'
last_name: Beck
orcid: 0000-0001-9056-4528
- first_name: Mathias
full_name: Bobbert, Mathias
id: '7850'
last_name: Bobbert
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: Böhnke M, Bielak CR, Beck R, Bobbert M, Meschut G. Development of a friction
model for the numerical simulation of clinching processes. Friction. Published
online 2024. doi:10.26599/frict.2025.9441052
apa: Böhnke, M., Bielak, C. R., Beck, R., Bobbert, M., & Meschut, G. (2024).
Development of a friction model for the numerical simulation of clinching processes.
Friction. https://doi.org/10.26599/frict.2025.9441052
bibtex: '@article{Böhnke_Bielak_Beck_Bobbert_Meschut_2024, title={Development of
a friction model for the numerical simulation of clinching processes}, DOI={10.26599/frict.2025.9441052},
journal={Friction}, publisher={Tsinghua University Press}, author={Böhnke, Max
and Bielak, Christian Roman and Beck, Robert and Bobbert, Mathias and Meschut,
Gerson}, year={2024} }'
chicago: Böhnke, Max, Christian Roman Bielak, Robert Beck, Mathias Bobbert, and
Gerson Meschut. “Development of a Friction Model for the Numerical Simulation
of Clinching Processes.” Friction, 2024. https://doi.org/10.26599/frict.2025.9441052.
ieee: 'M. Böhnke, C. R. Bielak, R. Beck, M. Bobbert, and G. Meschut, “Development
of a friction model for the numerical simulation of clinching processes,” Friction,
2024, doi: 10.26599/frict.2025.9441052.'
mla: Böhnke, Max, et al. “Development of a Friction Model for the Numerical Simulation
of Clinching Processes.” Friction, Tsinghua University Press, 2024, doi:10.26599/frict.2025.9441052.
short: M. Böhnke, C.R. Bielak, R. Beck, M. Bobbert, G. Meschut, Friction (2024).
date_created: 2024-12-11T14:45:57Z
date_updated: 2026-05-12T14:08:38Z
department:
- _id: '157'
doi: 10.26599/frict.2025.9441052
language:
- iso: eng
project:
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '135'
name: 'TRR 285 – A01: TRR 285 - Subproject A01'
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: Friction
publication_identifier:
issn:
- 2223-7690
- 2223-7704
publication_status: published
publisher: Tsinghua University Press
quality_controlled: '1'
status: public
title: Development of a friction model for the numerical simulation of clinching processes
type: journal_article
user_id: '7850'
year: '2024'
...
---
_id: '59585'
abstract:
- lang: eng
text: Similar to bulk metal forming, clinch joining is characterised by large plastic
deformations and a variety of different 3D stress states, including severe compression.
However, inherent to plastic forming is the nucleation and growth of defects,
whose detrimental effects on the material behaviour can be described by continuum
damage models and eventually lead to material failure. As the damage evolution
strongly depends on the stress state, a stress-state-dependent model is utilised
to correctly track the accumulation. To formulate and parameterise this model,
besides classical experiments, so-called modified punch tests are also integrated
herein to enhance the calibration of the failure model by capturing a larger range
of stress states and metal-forming-specific loading conditions. Moreover, when
highly ductile materials are considered, such as the dual-phase steel HCT590X
and the aluminium alloy EN AW-6014 T4 investigated here, strong necking and localisation
might occur prior to fracture. This can alter the stress state and affect the
actual strain at failure. This influence is captured by coupling plasticity and
damage to incorporate the damage-induced softening effect. Its relative importance
is shown by conducting inverse parameter identifications to determine damage and
failure parameters for both mentioned ductile metals based on up to 12 different
experiments.
article_number: '157'
author:
- first_name: Johannes
full_name: Friedlein, Johannes
last_name: Friedlein
- first_name: Max
full_name: Böhnke, Max
id: '45779'
last_name: Böhnke
- first_name: Malte Christian
full_name: Schlichter, Malte Christian
id: '61977'
last_name: Schlichter
- first_name: Mathias
full_name: Bobbert, Mathias
id: '7850'
last_name: Bobbert
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Julia
full_name: Mergheim, Julia
last_name: Mergheim
- first_name: Paul
full_name: Steinmann, Paul
last_name: Steinmann
citation:
ama: Friedlein J, Böhnke M, Schlichter MC, et al. Material Parameter Identification
for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch
Joining. Journal of Manufacturing and Materials Processing. 2024;8(4).
doi:10.3390/jmmp8040157
apa: Friedlein, J., Böhnke, M., Schlichter, M. C., Bobbert, M., Meschut, G., Mergheim,
J., & Steinmann, P. (2024). Material Parameter Identification for a Stress-State-Dependent
Ductile Damage and Failure Model Applied to Clinch Joining. Journal of Manufacturing
and Materials Processing, 8(4), Article 157. https://doi.org/10.3390/jmmp8040157
bibtex: '@article{Friedlein_Böhnke_Schlichter_Bobbert_Meschut_Mergheim_Steinmann_2024,
title={Material Parameter Identification for a Stress-State-Dependent Ductile
Damage and Failure Model Applied to Clinch Joining}, volume={8}, DOI={10.3390/jmmp8040157},
number={4157}, journal={Journal of Manufacturing and Materials Processing}, publisher={MDPI
AG}, author={Friedlein, Johannes and Böhnke, Max and Schlichter, Malte Christian
and Bobbert, Mathias and Meschut, Gerson and Mergheim, Julia and Steinmann, Paul},
year={2024} }'
chicago: Friedlein, Johannes, Max Böhnke, Malte Christian Schlichter, Mathias Bobbert,
Gerson Meschut, Julia Mergheim, and Paul Steinmann. “Material Parameter Identification
for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch
Joining.” Journal of Manufacturing and Materials Processing 8, no. 4 (2024).
https://doi.org/10.3390/jmmp8040157.
ieee: 'J. Friedlein et al., “Material Parameter Identification for a Stress-State-Dependent
Ductile Damage and Failure Model Applied to Clinch Joining,” Journal of Manufacturing
and Materials Processing, vol. 8, no. 4, Art. no. 157, 2024, doi: 10.3390/jmmp8040157.'
mla: Friedlein, Johannes, et al. “Material Parameter Identification for a Stress-State-Dependent
Ductile Damage and Failure Model Applied to Clinch Joining.” Journal of Manufacturing
and Materials Processing, vol. 8, no. 4, 157, MDPI AG, 2024, doi:10.3390/jmmp8040157.
short: J. Friedlein, M. Böhnke, M.C. Schlichter, M. Bobbert, G. Meschut, J. Mergheim,
P. Steinmann, Journal of Manufacturing and Materials Processing 8 (2024).
date_created: 2025-04-15T11:07:52Z
date_updated: 2026-05-13T13:53:29Z
department:
- _id: '157'
doi: 10.3390/jmmp8040157
intvolume: ' 8'
issue: '4'
language:
- iso: eng
project:
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '135'
name: 'TRR 285 – A01: TRR 285 - Subproject A01'
- _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: Material Parameter Identification for a Stress-State-Dependent Ductile Damage
and Failure Model Applied to Clinch Joining
type: journal_article
user_id: '61977'
volume: 8
year: '2024'
...
---
_id: '58215'
citation:
ama: "Bürgel C, Heiderich J, Koch C, Schlaak C, Visser J, eds. \tZeitschrift
Für Romanische Sprachen Und Ihre Didaktik. Vol Heft 18,1.; 2024."
apa: "Bürgel, C., Heiderich, J., Koch, C., Schlaak, C., & Visser, J. (Eds.).
(2024). \tZeitschrift für Romanische Sprachen und ihre Didaktik: Vol. Heft
18,1."
bibtex: "@book{Bürgel_Heiderich_Koch_Schlaak_Visser_2024, series={Zeitschrift für
Romanische Sprachen und ihre Didaktik}, title={\tZeitschrift für Romanische Sprachen
und ihre Didaktik}, volume={Heft 18,1}, year={2024}, collection={Zeitschrift für
Romanische Sprachen und ihre Didaktik} }"
chicago: "Bürgel, Christoph, Jens Heiderich, Corinna Koch, Claudia Schlaak, and
Judith Visser, eds. \tZeitschrift Für Romanische Sprachen Und Ihre Didaktik.
Vol. Heft 18,1. Zeitschrift Für Romanische Sprachen Und Ihre Didaktik, 2024."
ieee: "C. Bürgel, J. Heiderich, C. Koch, C. Schlaak, and J. Visser, Eds., \tZeitschrift
für Romanische Sprachen und ihre Didaktik, vol. Heft 18,1. 2024."
mla: "Bürgel, Christoph, et al., editors. \tZeitschrift Für Romanische Sprachen
Und Ihre Didaktik. 2024."
short: "C. Bürgel, J. Heiderich, C. Koch, C. Schlaak, J. Visser, eds., \tZeitschrift
Für Romanische Sprachen Und Ihre Didaktik, 2024."
date_created: 2025-01-16T14:17:38Z
date_updated: 2026-05-13T13:47:37Z
editor:
- first_name: Christoph
full_name: Bürgel, Christoph
id: '58448'
last_name: Bürgel
- first_name: 'Jens '
full_name: 'Heiderich, Jens '
last_name: Heiderich
- first_name: Corinna
full_name: Koch, Corinna
last_name: Koch
- first_name: Claudia
full_name: Schlaak, Claudia
last_name: Schlaak
- first_name: Judith
full_name: Visser, Judith
last_name: Visser
language:
- iso: eng
main_file_link:
- url: Paderborn
series_title: Zeitschrift für Romanische Sprachen und ihre Didaktik
status: public
title: "\tZeitschrift für Romanische Sprachen und ihre Didaktik"
type: book_editor
user_id: '43976'
volume: Heft 18,1
year: '2024'
...