---
_id: '65537'
abstract:
- lang: eng
text: 'It is a widely accepted standard practice to implement cryptographic
software so that secret inputs do not influence the cycle count. Software following
this paradigm is often referred to as “constant-time” software and typically involves
following three rules: 1) never branch on a secret-dependent condition, 2) never
access memory at a secret-dependent location, and 3) avoid variable-time arithmetic
operations on secret data. The third rule requires knowledge about such variable-time
arithmetic instructions, or vice versa, which operations are safe to use on secret
inputs. For a long time, this knowledge was based on either documentation or microbenchmarks,
but critically, there were never any guarantees for future microarchitectures.
This changed with the introduction of the data-operand-independent-timing (DOIT)
mode on Intel CPUs and, to some extent, the data-independent-timing (DIT) mode
on Arm CPUs. Both Intel and Arm document a subset of their respective instruction
sets that are intended to leak no information about their inputs through timing,
even on future microarchitectures if the CPU is set to run in a dedicated DOIT
(or DIT) mode.In this paper, we present a principled solution that leverages DOIT
to enable cryptographic software that is future-proof constant-time, in the sense
that it ensures that only instructions from the DOIT subset are used to operate
on secret data, even during speculative execution after a mispredicted branch
or function return location. For this solution, we build on top of existing security
type systems in the Jasmin framework for high-assurance cryptography.We then use
our solution to evaluate the extent to which existing cryptographic software built
to be “constant-time” is already secure in this stricter paradigm implied by DOIT
and what the performance impact is to move from constant-time to future-proof
constant-time.'
author:
- first_name: Santiago
full_name: Arranz-Olmos, Santiago
last_name: Arranz-Olmos
- first_name: Gilles
full_name: Barthe, Gilles
last_name: Barthe
- first_name: Benjamin
full_name: Grégoire, Benjamin
last_name: Grégoire
- first_name: Jan
full_name: Jancar, Jan
last_name: Jancar
- first_name: Vincent
full_name: Laporte, Vincent
last_name: Laporte
- first_name: Tiago
full_name: Oliveira, Tiago
last_name: Oliveira
- first_name: Peter
full_name: Schwabe, Peter
last_name: Schwabe
citation:
ama: 'Arranz-Olmos S, Barthe G, Grégoire B, et al. Let’s DOIT: Using Intel’s Extended
HW/SW Contract for Secure Compilation of Crypto Code. IACR Transactions on
Cryptographic Hardware and Embedded Systems. 2025;2025(3):644-667. doi:10.46586/tches.v2025.i3.644-667'
apa: 'Arranz-Olmos, S., Barthe, G., Grégoire, B., Jancar, J., Laporte, V., Oliveira,
T., & Schwabe, P. (2025). Let’s DOIT: Using Intel’s Extended HW/SW Contract
for Secure Compilation of Crypto Code. IACR Transactions on Cryptographic Hardware
and Embedded Systems, 2025(3), 644–667. https://doi.org/10.46586/tches.v2025.i3.644-667'
bibtex: '@article{Arranz-Olmos_Barthe_Grégoire_Jancar_Laporte_Oliveira_Schwabe_2025,
title={Let’s DOIT: Using Intel’s Extended HW/SW Contract for Secure Compilation
of Crypto Code}, volume={2025}, DOI={10.46586/tches.v2025.i3.644-667},
number={3}, journal={IACR Transactions on Cryptographic Hardware and Embedded
Systems}, publisher={Universitatsbibliothek der Ruhr-Universitat Bochum}, author={Arranz-Olmos,
Santiago and Barthe, Gilles and Grégoire, Benjamin and Jancar, Jan and Laporte,
Vincent and Oliveira, Tiago and Schwabe, Peter}, year={2025}, pages={644–667}
}'
chicago: 'Arranz-Olmos, Santiago, Gilles Barthe, Benjamin Grégoire, Jan Jancar,
Vincent Laporte, Tiago Oliveira, and Peter Schwabe. “Let’s DOIT: Using Intel’s
Extended HW/SW Contract for Secure Compilation of Crypto Code.” IACR Transactions
on Cryptographic Hardware and Embedded Systems 2025, no. 3 (2025): 644–67.
https://doi.org/10.46586/tches.v2025.i3.644-667.'
ieee: 'S. Arranz-Olmos et al., “Let’s DOIT: Using Intel’s Extended HW/SW
Contract for Secure Compilation of Crypto Code,” IACR Transactions on Cryptographic
Hardware and Embedded Systems, vol. 2025, no. 3, pp. 644–667, 2025, doi: 10.46586/tches.v2025.i3.644-667.'
mla: 'Arranz-Olmos, Santiago, et al. “Let’s DOIT: Using Intel’s Extended HW/SW Contract
for Secure Compilation of Crypto Code.” IACR Transactions on Cryptographic
Hardware and Embedded Systems, vol. 2025, no. 3, Universitatsbibliothek der
Ruhr-Universitat Bochum, 2025, pp. 644–67, doi:10.46586/tches.v2025.i3.644-667.'
short: S. Arranz-Olmos, G. Barthe, B. Grégoire, J. Jancar, V. Laporte, T. Oliveira,
P. Schwabe, IACR Transactions on Cryptographic Hardware and Embedded Systems 2025
(2025) 644–667.
date_created: 2026-04-30T09:31:53Z
date_updated: 2026-04-30T09:32:27Z
doi: 10.46586/tches.v2025.i3.644-667
intvolume: ' 2025'
issue: '3'
page: 644-667
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: 'Let’s DOIT: Using Intel’s Extended HW/SW Contract for Secure Compilation of
Crypto Code'
type: journal_article
user_id: '125442'
volume: 2025
year: '2025'
...
---
_id: '65538'
abstract:
- lang: eng
text: Developers implementing elliptic curve cryptography (ECC) face a wide
range of implementation choices created by decades of research into elliptic curves.
The literature on elliptic curves offers a plethora of curve models, scalar multipliers,
and addition formulas, but this comes with the price of enabling attacks to also
use the rich structure of these techniques. Navigating through this area is not
an easy task and developers often obscure their choices, especially in black-box
hardware implementations. Since side-channel attackers rely on the knowledge of
the implementation details, reverse engineering becomes a crucial part of attacks.This
work presents ECTester – a tool for testing black-box ECC implementations. Through
various test suites, ECTester observes the behavior of the target implementation
against known attacks but also non-standard inputs and elliptic curve parameters.
We analyze popular ECC libraries and smartcards and show that some libraries and
most smartcards do not check the order of the input points and improperly handle
the infinity point. Based on these observations, we design new techniques for
reverse engineering scalar randomization countermeasures that are able to distinguish
between group scalar randomization, additive, multiplicative or Euclidean splitting.
Our techniques do not require side-channel measurements; they only require the
ability to set custom domain parameters, and are able to extract not only the
size but also the exact value of the random mask used. Using the techniques, we
successfully reverse-engineered the countermeasures on 13 cryptographic smartcards
from 5 major manufacturers – all but one we tested on. Finally, we discuss what
mitigations can be applied to prevent such reverse engineering, and whether it
is possible at all.
author:
- first_name: Vojtech
full_name: Suchanek, Vojtech
last_name: Suchanek
- first_name: Jan
full_name: Jancar, Jan
last_name: Jancar
- first_name: Jan
full_name: Kvapil, Jan
last_name: Kvapil
- first_name: Petr
full_name: Svenda, Petr
last_name: Svenda
- first_name: Łukasz
full_name: Chmielewski, Łukasz
last_name: Chmielewski
citation:
ama: 'Suchanek V, Jancar J, Kvapil J, Svenda P, Chmielewski Ł. ECTester: Reverse-engineering
side-channel countermeasures of ECC implementations. IACR Transactions on Cryptographic
Hardware and Embedded Systems. 2025;2025(4):290-316. doi:10.46586/tches.v2025.i4.290-316'
apa: 'Suchanek, V., Jancar, J., Kvapil, J., Svenda, P., & Chmielewski, Ł. (2025).
ECTester: Reverse-engineering side-channel countermeasures of ECC implementations.
IACR Transactions on Cryptographic Hardware and Embedded Systems, 2025(4),
290–316. https://doi.org/10.46586/tches.v2025.i4.290-316'
bibtex: '@article{Suchanek_Jancar_Kvapil_Svenda_Chmielewski_2025, title={ECTester:
Reverse-engineering side-channel countermeasures of ECC implementations}, volume={2025},
DOI={10.46586/tches.v2025.i4.290-316},
number={4}, journal={IACR Transactions on Cryptographic Hardware and Embedded
Systems}, publisher={Universitatsbibliothek der Ruhr-Universitat Bochum}, author={Suchanek,
Vojtech and Jancar, Jan and Kvapil, Jan and Svenda, Petr and Chmielewski, Łukasz},
year={2025}, pages={290–316} }'
chicago: 'Suchanek, Vojtech, Jan Jancar, Jan Kvapil, Petr Svenda, and Łukasz Chmielewski.
“ECTester: Reverse-Engineering Side-Channel Countermeasures of ECC Implementations.”
IACR Transactions on Cryptographic Hardware and Embedded Systems 2025,
no. 4 (2025): 290–316. https://doi.org/10.46586/tches.v2025.i4.290-316.'
ieee: 'V. Suchanek, J. Jancar, J. Kvapil, P. Svenda, and Ł. Chmielewski, “ECTester:
Reverse-engineering side-channel countermeasures of ECC implementations,” IACR
Transactions on Cryptographic Hardware and Embedded Systems, vol. 2025, no.
4, pp. 290–316, 2025, doi: 10.46586/tches.v2025.i4.290-316.'
mla: 'Suchanek, Vojtech, et al. “ECTester: Reverse-Engineering Side-Channel Countermeasures
of ECC Implementations.” IACR Transactions on Cryptographic Hardware and Embedded
Systems, vol. 2025, no. 4, Universitatsbibliothek der Ruhr-Universitat Bochum,
2025, pp. 290–316, doi:10.46586/tches.v2025.i4.290-316.'
short: V. Suchanek, J. Jancar, J. Kvapil, P. Svenda, Ł. Chmielewski, IACR Transactions
on Cryptographic Hardware and Embedded Systems 2025 (2025) 290–316.
date_created: 2026-04-30T09:31:59Z
date_updated: 2026-04-30T09:32:25Z
doi: 10.46586/tches.v2025.i4.290-316
intvolume: ' 2025'
issue: '4'
page: 290-316
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: 'ECTester: Reverse-engineering side-channel countermeasures of ECC implementations'
type: journal_article
user_id: '125442'
volume: 2025
year: '2025'
...
---
_id: '61778'
abstract:
- lang: eng
text: "Understanding the entanglement structure of local Hamiltonian ground spaces\r\nis
a physically motivated problem, with applications ranging from tensor\r\nnetwork
design to quantum error-correcting codes. To this end, we study the\r\ncomplexity
of estimating ground state entanglement, and more generally entropy\r\nestimation
for low energy states and Gibbs states. We find, in particular, that\r\nthe classes
qq-QAM [Kobayashi, le Gall, Nishimura, SICOMP 2019] (a quantum\r\nanalogue of
public-coin AM) and QMA(2) (QMA with unentangled proofs) play a\r\ncrucial role
for such problems, showing: (1) Detecting a high-entanglement\r\nground state
is qq-QAM-complete, (2) computing an additive error approximation\r\nto the Helmholtz
free energy (equivalently, a multiplicative error\r\napproximation to the partition
function) is in qq-QAM, (3) detecting a\r\nlow-entanglement ground state is QMA(2)-hard,
and (4) detecting low energy\r\nstates which are close to product states can range
from QMA-complete to\r\nQMA(2)-complete. Our results make progress on an open
question of [Bravyi,\r\nChowdhury, Gosset and Wocjan, Nature Physics 2022] on
free energy, and yield\r\nthe first QMA(2)-complete Hamiltonian problem using
local Hamiltonians (cf. the\r\nsparse QMA(2)-complete Hamiltonian problem of [Chailloux,
Sattath, CCC 2012])."
author:
- first_name: Sevag
full_name: Gharibian, Sevag
id: '71541'
last_name: Gharibian
orcid: 0000-0002-9992-3379
- first_name: Jonas
full_name: Kamminga, Jonas
last_name: Kamminga
citation:
ama: Gharibian S, Kamminga J. On the complexity of estimating ground state entanglement
and free energy. arXiv:251006796. Published online 2025.
apa: Gharibian, S., & Kamminga, J. (2025). On the complexity of estimating ground
state entanglement and free energy. In arXiv:2510.06796.
bibtex: '@article{Gharibian_Kamminga_2025, title={On the complexity of estimating
ground state entanglement and free energy}, journal={arXiv:2510.06796}, author={Gharibian,
Sevag and Kamminga, Jonas}, year={2025} }'
chicago: Gharibian, Sevag, and Jonas Kamminga. “On the Complexity of Estimating
Ground State Entanglement and Free Energy.” ArXiv:2510.06796, 2025.
ieee: S. Gharibian and J. Kamminga, “On the complexity of estimating ground state
entanglement and free energy,” arXiv:2510.06796. 2025.
mla: Gharibian, Sevag, and Jonas Kamminga. “On the Complexity of Estimating Ground
State Entanglement and Free Energy.” ArXiv:2510.06796, 2025.
short: S. Gharibian, J. Kamminga, ArXiv:2510.06796 (2025).
date_created: 2025-10-10T13:45:28Z
date_updated: 2026-04-30T14:08:44Z
department:
- _id: '7'
- _id: '623'
external_id:
arxiv:
- '2510.06796'
language:
- iso: eng
publication: arXiv:2510.06796
status: public
title: On the complexity of estimating ground state entanglement and free energy
type: preprint
user_id: '71541'
year: '2025'
...
---
_id: '61164'
abstract:
- lang: eng
text: Building on and methodologically extending conceptual metaphor theory,
the article examines how personal agency as a discursively produced sociopsychological
phenomenon can be studied in elicited metaphors through a discourse-analytical
approach. More concretely, the study illustrates how early-career researchers
experience and express their agency in research writing through personal metaphors
of academic writing such as riding a roller coaster or baking a wedding cake.
A two-step discursive analysis adapts Hopper and Thompson's multidimensional approach
to linguistic transitivity to study agency in language. The analytical approach
involves both an in-depth parametrized analysis of all metaphors in the sample
and a qualitative cross-analysis of the data. The results show that the participants'
metaphors reflect both nuanced personal experiences and cultural expectations
of academic writing, the writer, and the text. This emphasizes that research writing
is not only a highly subjective practice but also one that is socially and culturally
influenced. The article argues that research on agency thus needs elaborate methodological
tools to trace discursive and sociopsychological trajectories of complex socio-cognitive
practices like academic writing. This has implications not only for the nexus
of research writing, identity, and academic enculturation but also for other fields
focusing on agency in language.
article_number: '1567498'
author:
- first_name: Andrea
full_name: Karsten, Andrea
last_name: Karsten
citation:
ama: Karsten A. Understanding personal agency through metaphor, or Why academic
writing is (not) like a roller-coaster ride. Frontiers in Language Sciences.
2025;4. doi:10.3389/flang.2025.1567498
apa: Karsten, A. (2025). Understanding personal agency through metaphor, or Why
academic writing is (not) like a roller-coaster ride. Frontiers in Language
Sciences, 4, Article 1567498. https://doi.org/10.3389/flang.2025.1567498
bibtex: '@article{Karsten_2025, title={Understanding personal agency through metaphor,
or Why academic writing is (not) like a roller-coaster ride}, volume={4}, DOI={10.3389/flang.2025.1567498},
number={1567498}, journal={Frontiers in Language Sciences}, publisher={Frontiers
Media SA}, author={Karsten, Andrea}, year={2025} }'
chicago: Karsten, Andrea. “Understanding Personal Agency through Metaphor, or Why
Academic Writing Is (Not) like a Roller-Coaster Ride.” Frontiers in Language
Sciences 4 (2025). https://doi.org/10.3389/flang.2025.1567498.
ieee: 'A. Karsten, “Understanding personal agency through metaphor, or Why academic
writing is (not) like a roller-coaster ride,” Frontiers in Language Sciences,
vol. 4, Art. no. 1567498, 2025, doi: 10.3389/flang.2025.1567498.'
mla: Karsten, Andrea. “Understanding Personal Agency through Metaphor, or Why Academic
Writing Is (Not) like a Roller-Coaster Ride.” Frontiers in Language Sciences,
vol. 4, 1567498, Frontiers Media SA, 2025, doi:10.3389/flang.2025.1567498.
short: A. Karsten, Frontiers in Language Sciences 4 (2025).
date_created: 2025-09-10T10:50:30Z
date_updated: 2026-05-06T08:37:28Z
doi: 10.3389/flang.2025.1567498
intvolume: ' 4'
publication: Frontiers in Language Sciences
publication_identifier:
issn:
- 2813-4605
publication_status: published
publisher: Frontiers Media SA
status: public
title: Understanding personal agency through metaphor, or Why academic writing is
(not) like a roller-coaster ride
type: journal_article
user_id: '53917'
volume: 4
year: '2025'
...
---
_id: '65564'
author:
- first_name: Stefan Teodorov
full_name: Lazarov, Stefan Teodorov
id: '90345'
last_name: Lazarov
orcid: 0009-0009-0892-9483
- first_name: Olcay
full_name: Türk, Olcay
last_name: Türk
- first_name: Angela
full_name: Grimminger, Angela
id: '57578'
last_name: Grimminger
- first_name: 'Petra '
full_name: 'Wagner, Petra '
last_name: Wagner
- first_name: Hendrik
full_name: Buschmeier, Hendrik
last_name: Buschmeier
citation:
ama: Lazarov ST, Türk O, Grimminger A, Wagner P, Buschmeier H. Annotation Schemes
Project A02 “Monitoring the Understanding of Explanations.” LibreCat University;
2025. doi:10.17605/OSF.IO/J2DHA
apa: Lazarov, S. T., Türk, O., Grimminger, A., Wagner, P., & Buschmeier, H.
(2025). Annotation Schemes Project A02 “Monitoring the understanding of explanations.”
LibreCat University. https://doi.org/10.17605/OSF.IO/J2DHA
bibtex: '@book{Lazarov_Türk_Grimminger_Wagner_Buschmeier_2025, title={Annotation
Schemes Project A02 “Monitoring the understanding of explanations”}, DOI={10.17605/OSF.IO/J2DHA},
publisher={LibreCat University}, author={Lazarov, Stefan Teodorov and Türk, Olcay
and Grimminger, Angela and Wagner, Petra and Buschmeier, Hendrik}, year={2025}
}'
chicago: Lazarov, Stefan Teodorov, Olcay Türk, Angela Grimminger, Petra Wagner,
and Hendrik Buschmeier. Annotation Schemes Project A02 “Monitoring the Understanding
of Explanations.” LibreCat University, 2025. https://doi.org/10.17605/OSF.IO/J2DHA.
ieee: S. T. Lazarov, O. Türk, A. Grimminger, P. Wagner, and H. Buschmeier, Annotation
Schemes Project A02 “Monitoring the understanding of explanations.” LibreCat
University, 2025.
mla: Lazarov, Stefan Teodorov, et al. Annotation Schemes Project A02 “Monitoring
the Understanding of Explanations.” LibreCat University, 2025, doi:10.17605/OSF.IO/J2DHA.
short: S.T. Lazarov, O. Türk, A. Grimminger, P. Wagner, H. Buschmeier, Annotation
Schemes Project A02 “Monitoring the Understanding of Explanations,” LibreCat University,
2025.
date_created: 2026-05-05T14:09:18Z
date_updated: 2026-05-05T14:18:35Z
doi: 10.17605/OSF.IO/J2DHA
language:
- iso: eng
project:
- _id: '112'
name: 'TRR 318; TP A02: Verstehensprozess einer Erklärung beobachten und auswerten'
publication_status: published
publisher: LibreCat University
status: public
title: Annotation Schemes Project A02 "Monitoring the understanding of explanations"
type: misc
user_id: '90345'
year: '2025'
...
---
_id: '61165'
abstract:
- lang: eng
text: Building on and methodologically extending conceptual metaphor theory,
the article examines how personal agency as a discursively produced sociopsychological
phenomenon can be studied in elicited metaphors through a discourse-analytical
approach. More concretely, the study illustrates how early-career researchers
experience and express their agency in research writing through personal metaphors
of academic writing such as riding a roller coaster or baking a wedding cake.
A two-step discursive analysis adapts Hopper and Thompson's multidimensional approach
to linguistic transitivity to study agency in language. The analytical approach
involves both an in-depth parametrized analysis of all metaphors in the sample
and a qualitative cross-analysis of the data. The results show that the participants'
metaphors reflect both nuanced personal experiences and cultural expectations
of academic writing, the writer, and the text. This emphasizes that research writing
is not only a highly subjective practice but also one that is socially and culturally
influenced. The article argues that research on agency thus needs elaborate methodological
tools to trace discursive and sociopsychological trajectories of complex socio-cognitive
practices like academic writing. This has implications not only for the nexus
of research writing, identity, and academic enculturation but also for other fields
focusing on agency in language.
article_number: '1567498'
author:
- first_name: Andrea Ramona
full_name: Karsten, Andrea Ramona
id: '53917'
last_name: Karsten
orcid: 0000-0003-0194-2000
citation:
ama: Karsten AR. Understanding personal agency through metaphor, or Why academic
writing is (not) like a roller-coaster ride. Frontiers in Language Sciences.
2025;4. doi:10.3389/flang.2025.1567498
apa: Karsten, A. R. (2025). Understanding personal agency through metaphor, or Why
academic writing is (not) like a roller-coaster ride. Frontiers in Language
Sciences, 4, Article 1567498. https://doi.org/10.3389/flang.2025.1567498
bibtex: '@article{Karsten_2025, title={Understanding personal agency through metaphor,
or Why academic writing is (not) like a roller-coaster ride}, volume={4}, DOI={10.3389/flang.2025.1567498},
number={1567498}, journal={Frontiers in Language Sciences}, publisher={Frontiers
Media SA}, author={Karsten, Andrea Ramona}, year={2025} }'
chicago: Karsten, Andrea Ramona. “Understanding Personal Agency through Metaphor,
or Why Academic Writing Is (Not) like a Roller-Coaster Ride.” Frontiers in
Language Sciences 4 (2025). https://doi.org/10.3389/flang.2025.1567498.
ieee: 'A. R. Karsten, “Understanding personal agency through metaphor, or Why academic
writing is (not) like a roller-coaster ride,” Frontiers in Language Sciences,
vol. 4, Art. no. 1567498, 2025, doi: 10.3389/flang.2025.1567498.'
mla: Karsten, Andrea Ramona. “Understanding Personal Agency through Metaphor, or
Why Academic Writing Is (Not) like a Roller-Coaster Ride.” Frontiers in Language
Sciences, vol. 4, 1567498, Frontiers Media SA, 2025, doi:10.3389/flang.2025.1567498.
short: A.R. Karsten, Frontiers in Language Sciences 4 (2025).
date_created: 2025-09-10T10:51:29Z
date_updated: 2026-05-06T08:42:08Z
doi: 10.3389/flang.2025.1567498
intvolume: ' 4'
language:
- iso: eng
project:
- _id: '120'
name: 'TRR 318: Project Area RTG - Integriertes Graduiertenkolleg'
publication: Frontiers in Language Sciences
publication_identifier:
issn:
- 2813-4605
publication_status: published
publisher: Frontiers Media SA
related_material:
link:
- relation: confirmation
url: https://www.frontiersin.org/articles/10.3389/flang.2025.1567498/full#supplementary-material
status: public
title: Understanding personal agency through metaphor, or Why academic writing is
(not) like a roller-coaster ride
type: journal_article
user_id: '53917'
volume: 4
year: '2025'
...
---
_id: '61149'
abstract:
- lang: eng
text: The use of continuous fiber-reinforced thermoplastics (FRTP) in automotive
industry increases due to their excellent material properties and possibility
of rapid processing. The scale spanning heterogeneity of their material structure
and its influence on the material behavior, however, presents significant challenges
for most joining technologies, such as self-piercing riveting (SPR). During mechanical
joining, the material structure is significantly altered within and around the
joining zone, heavily influencing the material behavior. A comprehensive understanding
of the underlying phenomena of material alteration during the SPR process is essential
as basis for validating numerical simulations. This study examines the material
structure at ten stages of a step-setting test of SPR with two FRTP sheets with
glass-fiber reinforcement. Utilizing X-ray computed tomography (CT), the damage
phenomena within different areas of the setting test are analyzed three-dimensionally
and key parameters are quantified. Dominating phenomena during the penetration
of the rivet into the laminate are fiber failure (FF), interfiber failure (IFF)
and fiber bending, while delamination, fiber kinking and roving splitting are
also observed. At the final stages, the bottom layers of the second sheet collapse
and form a bulge into the cavity of the die.
author:
- first_name: Alrik
full_name: Dargel, Alrik
id: '114764'
last_name: Dargel
- first_name: Benjamin
full_name: Gröger, Benjamin
last_name: Gröger
- first_name: Malte Christian
full_name: Schlichter, Malte Christian
id: '61977'
last_name: Schlichter
- first_name: Johannes
full_name: Gerritzen, Johannes
id: '105344'
last_name: Gerritzen
orcid: 0000-0002-0169-8602
- first_name: Daniel
full_name: Köhler, Daniel
id: '83408'
last_name: Köhler
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Maik
full_name: Gude, Maik
last_name: Gude
- first_name: Robert
full_name: Kupfer, Robert
last_name: Kupfer
citation:
ama: 'Dargel A, Gröger B, Schlichter MC, et al. Local Deformation and Failure of
Composites during Self-Piercing Riveting: A CT-Based Microstructure Investigation.
In: Gomes JFS, Meguid SA, eds. Proceedings of the 8th International Conference
on Integrity-Reliability-Failure (IRF2025). FEUP; 2025. doi:10.24840/978-972-752-323-8'
apa: 'Dargel, A., Gröger, B., Schlichter, M. C., Gerritzen, J., Köhler, D., Meschut,
G., Gude, M., & Kupfer, R. (2025). Local Deformation and Failure of Composites
during Self-Piercing Riveting: A CT-Based Microstructure Investigation. In J.
F. S. Gomes & S. A. Meguid (Eds.), Proceedings of the 8th International
Conference on Integrity-Reliability-Failure (IRF2025). FEUP. https://doi.org/10.24840/978-972-752-323-8'
bibtex: '@inproceedings{Dargel_Gröger_Schlichter_Gerritzen_Köhler_Meschut_Gude_Kupfer_2025,
place={Porto}, title={Local Deformation and Failure of Composites during Self-Piercing
Riveting: A CT-Based Microstructure Investigation}, DOI={10.24840/978-972-752-323-8},
booktitle={Proceedings of the 8th International Conference on Integrity-Reliability-Failure
(IRF2025)}, publisher={FEUP}, author={Dargel, Alrik and Gröger, Benjamin and Schlichter,
Malte Christian and Gerritzen, Johannes and Köhler, Daniel and Meschut, Gerson
and Gude, Maik and Kupfer, Robert}, editor={Gomes, J.F. Silva and Meguid, Shaker
A.}, year={2025} }'
chicago: 'Dargel, Alrik, Benjamin Gröger, Malte Christian Schlichter, Johannes Gerritzen,
Daniel Köhler, Gerson Meschut, Maik Gude, and Robert Kupfer. “Local Deformation
and Failure of Composites during Self-Piercing Riveting: A CT-Based Microstructure
Investigation.” In Proceedings of the 8th International Conference on Integrity-Reliability-Failure
(IRF2025), edited by J.F. Silva Gomes and Shaker A. Meguid. Porto: FEUP, 2025.
https://doi.org/10.24840/978-972-752-323-8.'
ieee: 'A. Dargel et al., “Local Deformation and Failure of Composites during
Self-Piercing Riveting: A CT-Based Microstructure Investigation,” in Proceedings
of the 8th International Conference on Integrity-Reliability-Failure (IRF2025),
Porto, 2025, doi: 10.24840/978-972-752-323-8.'
mla: 'Dargel, Alrik, et al. “Local Deformation and Failure of Composites during
Self-Piercing Riveting: A CT-Based Microstructure Investigation.” Proceedings
of the 8th International Conference on Integrity-Reliability-Failure (IRF2025),
edited by J.F. Silva Gomes and Shaker A. Meguid, FEUP, 2025, doi:10.24840/978-972-752-323-8.'
short: 'A. Dargel, B. Gröger, M.C. Schlichter, J. Gerritzen, D. Köhler, G. Meschut,
M. Gude, R. Kupfer, in: J.F.S. Gomes, S.A. Meguid (Eds.), Proceedings of the 8th
International Conference on Integrity-Reliability-Failure (IRF2025), FEUP, Porto,
2025.'
conference:
end_date: 2025-07-18
location: Porto
name: 8th International Conference on Integrity-Reliability-Failure (IRF2025)
start_date: 2025-07-15
date_created: 2025-09-08T11:52:45Z
date_updated: 2026-05-07T08:40:51Z
doi: 10.24840/978-972-752-323-8
editor:
- first_name: J.F. Silva
full_name: Gomes, J.F. Silva
last_name: Gomes
- first_name: Shaker A.
full_name: Meguid, Shaker A.
last_name: Meguid
keyword:
- self-piercing riveting
- computed tomography
- thermoplastic composites
- process-structure-interaction
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.researchgate.net/publication/395593556_LOCAL_DEFORMATION_AND_FAILURE_OF_COMPOSITES_DURING_SELF-PIERCING_RIVETING_A_CT_BASED_MICROSTRUCTURE_INVESTIGATION
oa: '1'
place: Porto
project:
- _id: '133'
name: TRR 285 - Project Area C
- _id: '148'
name: TRR 285 - Subproject C04
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '131'
name: TRR 285 - Project Area A
- _id: '137'
name: TRR 285 - Subproject A03
- _id: '135'
name: TRR 285 - Subproject A01
publication: Proceedings of the 8th International Conference on Integrity-Reliability-Failure
(IRF2025)
publication_identifier:
isbn:
- '9789727523238'
publication_status: published
publisher: FEUP
status: public
title: 'Local Deformation and Failure of Composites during Self-Piercing Riveting:
A CT-Based Microstructure Investigation'
type: conference
user_id: '114764'
year: '2025'
...
---
_id: '62108'
author:
- first_name: Lars
full_name: Luchterhandt, Lars
last_name: Luchterhandt
- first_name: Vivek
full_name: Govindasamy, Vivek
last_name: Govindasamy
- first_name: Yutong
full_name: Wang, Yutong
last_name: Wang
- first_name: Christoph
full_name: Scheytt, Christoph
last_name: Scheytt
- first_name: Wolfgang
full_name: Mueller, Wolfgang
last_name: Mueller
- first_name: Rainer
full_name: Dömer, Rainer
last_name: Dömer
citation:
ama: 'Luchterhandt L, Govindasamy V, Wang Y, Scheytt C, Mueller W, Dömer R. A Quantitative
Guide to Navigate Speed/Accuracy Tradeoffs in System Level Design of RISC-V Processor
Grids. In: 2025 Forum on Specification & Design Languages (FDL). IEEE;
2025. doi:10.1109/fdl68117.2025.11165408'
apa: Luchterhandt, L., Govindasamy, V., Wang, Y., Scheytt, C., Mueller, W., &
Dömer, R. (2025). A Quantitative Guide to Navigate Speed/Accuracy Tradeoffs in
System Level Design of RISC-V Processor Grids. 2025 Forum on Specification
& Design Languages (FDL). https://doi.org/10.1109/fdl68117.2025.11165408
bibtex: '@inproceedings{Luchterhandt_Govindasamy_Wang_Scheytt_Mueller_Dömer_2025,
title={A Quantitative Guide to Navigate Speed/Accuracy Tradeoffs in System Level
Design of RISC-V Processor Grids}, DOI={10.1109/fdl68117.2025.11165408},
booktitle={2025 Forum on Specification & Design Languages (FDL)}, publisher={IEEE},
author={Luchterhandt, Lars and Govindasamy, Vivek and Wang, Yutong and Scheytt,
Christoph and Mueller, Wolfgang and Dömer, Rainer}, year={2025} }'
chicago: Luchterhandt, Lars, Vivek Govindasamy, Yutong Wang, Christoph Scheytt,
Wolfgang Mueller, and Rainer Dömer. “A Quantitative Guide to Navigate Speed/Accuracy
Tradeoffs in System Level Design of RISC-V Processor Grids.” In 2025 Forum
on Specification & Design Languages (FDL). IEEE, 2025. https://doi.org/10.1109/fdl68117.2025.11165408.
ieee: 'L. Luchterhandt, V. Govindasamy, Y. Wang, C. Scheytt, W. Mueller, and R.
Dömer, “A Quantitative Guide to Navigate Speed/Accuracy Tradeoffs in System Level
Design of RISC-V Processor Grids,” 2025, doi: 10.1109/fdl68117.2025.11165408.'
mla: Luchterhandt, Lars, et al. “A Quantitative Guide to Navigate Speed/Accuracy
Tradeoffs in System Level Design of RISC-V Processor Grids.” 2025 Forum on
Specification & Design Languages (FDL), IEEE, 2025, doi:10.1109/fdl68117.2025.11165408.
short: 'L. Luchterhandt, V. Govindasamy, Y. Wang, C. Scheytt, W. Mueller, R. Dömer,
in: 2025 Forum on Specification & Design Languages (FDL), IEEE, 2025.'
date_created: 2025-11-06T09:47:40Z
date_updated: 2026-05-08T09:12:31Z
department:
- _id: '58'
doi: 10.1109/fdl68117.2025.11165408
language:
- iso: eng
publication: 2025 Forum on Specification & Design Languages (FDL)
publication_status: published
publisher: IEEE
status: public
title: A Quantitative Guide to Navigate Speed/Accuracy Tradeoffs in System Level Design
of RISC-V Processor Grids
type: conference
user_id: '16243'
year: '2025'
...
---
_id: '65559'
abstract:
- lang: ger
text: Dieser Artikel spiegelt die dreißigjährige Geschichte der Zeitschrift Tertium
Comparationis, indem er eine der zentralen Vergleichseinheiten Vergleichender
Erziehungswissenschaft in den Blick nimmt. Themenhefte und Einzelbeiträge der
Zeitschrift Tertium Comparationis haben über die Jahrzehnte immer wieder reflexive
Blicke auf die Vergleichseinheit Land und/oder Nation geworfen, aber auch – ohne
Bezüge zu solchen Diskursen – Länder- und Nationenvergleiche in unterschiedlichen
Vorgehensweisen präsentiert. Bei der intensiven und analytischen Lektüre der Themen
und Inhalte ergeben sich Cluster der Perspektivsetzungen und damit verbundene
Diskurse, von denen einige aufgrund ihrer Häufigkeit und Intensität besonders
relevant erscheinen. Die aufzufindenden Diskurse und Cluster werden im Beitrag
präsentiert und anhand normativer, kritischer und innovativer Beiträge verifiziert.
Trotz konstant wiederholter Kritik und konzeptueller Änderungen, bleiben Land
und Nation zentrale Kategorien Vergleichender Erziehungswissenschaft.
author:
- first_name: Christine
full_name: Freitag, Christine
id: '20560'
last_name: Freitag
citation:
ama: 'Freitag C. Land und Nation: Perspektiven vergleichender Forschung in ausgewählten
Diskursen der Zeitschrift Tertium Comparationis. Tertium Comparationis.
2025;31(2):156-167. doi:10.31244/tc.2025.02.02'
apa: 'Freitag, C. (2025). Land und Nation: Perspektiven vergleichender Forschung
in ausgewählten Diskursen der Zeitschrift Tertium Comparationis. Tertium Comparationis,
31(2), 156–167. https://doi.org/10.31244/tc.2025.02.02'
bibtex: '@article{Freitag_2025, title={Land und Nation: Perspektiven vergleichender
Forschung in ausgewählten Diskursen der Zeitschrift Tertium Comparationis}, volume={31},
DOI={10.31244/tc.2025.02.02},
number={2}, journal={Tertium Comparationis}, publisher={Waxmann}, author={Freitag,
Christine}, year={2025}, pages={156–167} }'
chicago: 'Freitag, Christine. “Land und Nation: Perspektiven vergleichender Forschung
in ausgewählten Diskursen der Zeitschrift Tertium Comparationis.” Tertium
Comparationis 31, no. 2 (2025): 156–67. https://doi.org/10.31244/tc.2025.02.02.'
ieee: 'C. Freitag, “Land und Nation: Perspektiven vergleichender Forschung in ausgewählten
Diskursen der Zeitschrift Tertium Comparationis,” Tertium Comparationis,
vol. 31, no. 2, pp. 156–167, 2025, doi: 10.31244/tc.2025.02.02.'
mla: 'Freitag, Christine. “Land und Nation: Perspektiven vergleichender Forschung
in ausgewählten Diskursen der Zeitschrift Tertium Comparationis.” Tertium
Comparationis, vol. 31, no. 2, Waxmann, 2025, pp. 156–67, doi:10.31244/tc.2025.02.02.'
short: C. Freitag, Tertium Comparationis 31 (2025) 156–167.
date_created: 2026-05-05T12:12:35Z
date_updated: 2026-05-08T11:47:40Z
department:
- _id: '453'
doi: 10.31244/tc.2025.02.02
intvolume: ' 31'
issue: '2'
keyword:
- Tertium Comparationis
- Land
- Nation
- Vergleichende Erziehungswissenschaft
- Diskurse
language:
- iso: ger
main_file_link:
- open_access: '1'
url: https://www.waxmann.com/shop/download?tx_p2waxmann_download%5Baction%5D=download&tx_p2waxmann_download%5Bcontroller%5D=Zeitschrift&tx_p2waxmann_download%5Bid_artikel%5D=ART106580&tx_p2waxmann_download%5Buid%5D=frei&cHash=8bebe3e88a1eab177e7c65196dbb1715
oa: '1'
page: 156-167
publication: Tertium Comparationis
publication_identifier:
issn:
- 0947-9732
- 1434-1697
publication_status: published
publisher: Waxmann
status: public
title: 'Land und Nation: Perspektiven vergleichender Forschung in ausgewählten Diskursen
der Zeitschrift Tertium Comparationis'
type: journal_article
user_id: '10831'
volume: 31
year: '2025'
...
---
_id: '59671'
author:
- first_name: Mohammed
full_name: Abdelrahem, Mohammed
id: '95179'
last_name: Abdelrahem
orcid: 0000-0002-0545-9799
citation:
ama: Abdelrahem M. Die Menschheitsfamilie und der Begriff der Umma – Islamische
Perspektiven im interreligiösen Dialog. Zekk-Bolg; 2025.
apa: Abdelrahem, M. (2025). Die Menschheitsfamilie und der Begriff der Umma –
Islamische Perspektiven im interreligiösen Dialog. Zekk-Bolg.
bibtex: '@book{Abdelrahem_2025, place={Paderborn}, title={Die Menschheitsfamilie
und der Begriff der Umma – Islamische Perspektiven im interreligiösen Dialog},
publisher={Zekk-Bolg}, author={Abdelrahem, Mohammed}, year={2025} }'
chicago: 'Abdelrahem, Mohammed. Die Menschheitsfamilie und der Begriff der Umma
– Islamische Perspektiven im interreligiösen Dialog. Paderborn: Zekk-Bolg,
2025.'
ieee: 'M. Abdelrahem, Die Menschheitsfamilie und der Begriff der Umma – Islamische
Perspektiven im interreligiösen Dialog. Paderborn: Zekk-Bolg, 2025.'
mla: Abdelrahem, Mohammed. Die Menschheitsfamilie und der Begriff der Umma –
Islamische Perspektiven im interreligiösen Dialog. Zekk-Bolg, 2025.
short: M. Abdelrahem, Die Menschheitsfamilie und der Begriff der Umma – Islamische
Perspektiven im interreligiösen Dialog, Zekk-Bolg, Paderborn, 2025.
date_created: 2025-04-25T00:06:45Z
date_updated: 2026-05-08T13:34:20Z
department:
- _id: '469'
language:
- iso: ger
main_file_link:
- url: https://blogs.uni-paderborn.de/zekkblog/2025/04/18/die-menschheitsfamilie-und-der-begriff-der-umma-islamische-perspektiven-im-interreligioesen-dialog/
place: Paderborn
publisher: Zekk-Bolg
status: public
title: Die Menschheitsfamilie und der Begriff der Umma – Islamische Perspektiven im
interreligiösen Dialog
type: misc
user_id: '95179'
year: '2025'
...
---
_id: '60942'
abstract:
- lang: ger
text: BloKK-Beitrag für das ZeKK, 11.07.2025
author:
- first_name: Sarah
full_name: Lebock, Sarah
id: '53425'
last_name: Lebock
orcid: 0009-0005-7485-1902
citation:
ama: Lebock S. “Komparative Theologie und Soziale Arbeit?!”; 2025.
apa: Lebock, S. (2025). “Komparative Theologie und Soziale Arbeit?!”
bibtex: '@book{Lebock_2025, place={BloKK-Beitrag für das ZeKK, 11.07.2025}, title={“Komparative
Theologie und Soziale Arbeit?!”}, author={Lebock, Sarah}, year={2025} }'
chicago: Lebock, Sarah. “Komparative Theologie und Soziale Arbeit?!” BloKK-Beitrag
für das ZeKK, 11.07.2025, 2025.
ieee: S. Lebock, “Komparative Theologie und Soziale Arbeit?!” BloKK-Beitrag
für das ZeKK, 11.07.2025, 2025.
mla: Lebock, Sarah. “Komparative Theologie und Soziale Arbeit?!” 2025.
short: S. Lebock, “Komparative Theologie und Soziale Arbeit?!,” BloKK-Beitrag für
das ZeKK, 11.07.2025, 2025.
date_created: 2025-08-19T01:09:06Z
date_updated: 2026-05-10T12:10:04Z
department:
- _id: '550'
language:
- iso: ger
place: BloKK-Beitrag für das ZeKK, 11.07.2025
related_material:
link:
- relation: confirmation
url: https://blogs.uni-paderborn.de/zekkblog/2025/07/11/komparative-theologie-und-soziale-arbeit/
status: public
title: '"Komparative Theologie und Soziale Arbeit?!"'
type: misc
user_id: '53425'
year: '2025'
...
---
_id: '58807'
abstract:
- lang: eng
text: "One of the most important strategies for reducing CO2 emissions in the mobility
sector is lightweight construction. In particular, the car body offers several
opportunities for weight reduction. Multi-material designs are increasingly being
applied to select the most suitable material for the respective load and ultimately
achieve synergy effects. For example, aluminium castings are used at the nodes
of a spaceframe body. Subsequently, these are joined with profiles to form the
bodyshell. To join different materials mechanical joining techniques, such as
semi-tubular self-piercing riveting, are deployed. According to the current state
of the art, cracks occur in the aluminium castings during the mechanical joining
process as a result of the high degree of deformation. Although the aluminium
casting alloys of the AlSi-system exhibit low ductility, these alloys reveal excellent
castability. In particular, the ability to cast thin structural parts is enabled
by the low liquidus point of the near eutectic aluminium casting alloys.\r\nThis
study addresses the mechanical joining properties of the near eutectic aluminium
casting alloy AlSi12, depending on different microstructures. These are achieved
by annealing processes and modifying agents. Through an adapted heat treatment,
the previously lamellar morphology can be transformed into a globular morphology,
which leads to increased ductility and prevents the formation of cracks during
the self-piercing riveting (SPR). The joinability is investigated using different
die geometries, whereas the joint formation is analysed regarding crack initiation.
To evaluate the increased ductility, microstructural and mechanical tests are
performed and finally, a microstructure-joinability correlation is established."
article_type: original
author:
- first_name: Moritz
full_name: Neuser, Moritz
id: '32340'
last_name: Neuser
- first_name: Pia Katharina
full_name: Holtkamp, Pia Katharina
id: '44935'
last_name: Holtkamp
- first_name: Kay-Peter
full_name: Hoyer, Kay-Peter
id: '48411'
last_name: Hoyer
- first_name: Fabian
full_name: Kappe, Fabian
id: '66459'
last_name: Kappe
- first_name: Safak
full_name: Yildiz, Safak
last_name: Yildiz
- 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: Mirko
full_name: Schaper, Mirko
id: '43720'
last_name: Schaper
citation:
ama: 'Neuser M, Holtkamp PK, Hoyer K-P, et al. Mechanical properties and joinability
of the near-eutectic aluminium casting alloy AlSi12. The Journal of Materials:
Design and Applications, Part L. Published online 2025. doi:10.1177/14644207251319922'
apa: 'Neuser, M., Holtkamp, P. K., Hoyer, K.-P., Kappe, F., Yildiz, S., Bobbert,
M., Meschut, G., & Schaper, M. (2025). Mechanical properties and joinability
of the near-eutectic aluminium casting alloy AlSi12. The Journal of Materials:
Design and Applications, Part L. 5th International Conference on Materials
Design and Applications 2024, Porto, Portugal. https://doi.org/10.1177/14644207251319922'
bibtex: '@article{Neuser_Holtkamp_Hoyer_Kappe_Yildiz_Bobbert_Meschut_Schaper_2025,
title={Mechanical properties and joinability of the near-eutectic aluminium casting
alloy AlSi12}, DOI={10.1177/14644207251319922},
journal={The Journal of Materials: Design and Applications, Part L}, publisher={Sage
Publications}, author={Neuser, Moritz and Holtkamp, Pia Katharina and Hoyer, Kay-Peter
and Kappe, Fabian and Yildiz, Safak and Bobbert, Mathias and Meschut, Gerson and
Schaper, Mirko}, year={2025} }'
chicago: 'Neuser, Moritz, Pia Katharina Holtkamp, Kay-Peter Hoyer, Fabian Kappe,
Safak Yildiz, Mathias Bobbert, Gerson Meschut, and Mirko Schaper. “Mechanical
Properties and Joinability of the Near-Eutectic Aluminium Casting Alloy AlSi12.”
The Journal of Materials: Design and Applications, Part L, 2025. https://doi.org/10.1177/14644207251319922.'
ieee: 'M. Neuser et al., “Mechanical properties and joinability of the near-eutectic
aluminium casting alloy AlSi12,” The Journal of Materials: Design and Applications,
Part L, 2025, doi: 10.1177/14644207251319922.'
mla: 'Neuser, Moritz, et al. “Mechanical Properties and Joinability of the Near-Eutectic
Aluminium Casting Alloy AlSi12.” The Journal of Materials: Design and Applications,
Part L, Sage Publications, 2025, doi:10.1177/14644207251319922.'
short: 'M. Neuser, P.K. Holtkamp, K.-P. Hoyer, F. Kappe, S. Yildiz, M. Bobbert,
G. Meschut, M. Schaper, The Journal of Materials: Design and Applications, Part
L (2025).'
conference:
end_date: 2024-07-05
location: Porto, Portugal
name: 5th International Conference on Materials Design and Applications 2024
start_date: 2024-07-04
date_created: 2025-02-24T10:25:31Z
date_updated: 2026-05-12T12:13:31Z
department:
- _id: '43'
- _id: '158'
- _id: '157'
- _id: '9'
- _id: '321'
doi: 10.1177/14644207251319922
has_accepted_license: '1'
keyword:
- aluminium
- casting
- microstructure
- joinability
- self-piercing riveting
language:
- iso: eng
project:
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '136'
name: 'TRR 285 – A02: TRR 285 - Subproject A02'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '146'
name: 'TRR 285 – C02: TRR 285 - Subproject C02'
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: 'The Journal of Materials: Design and Applications, Part L'
publication_status: published
publisher: Sage Publications
quality_controlled: '1'
status: public
title: Mechanical properties and joinability of the near-eutectic aluminium casting
alloy AlSi12
type: journal_article
user_id: '7850'
year: '2025'
...
---
_id: '60290'
abstract:
- lang: eng
text: The constantly increasing demand for climate protection and resource conservation
requires innovative and versatile joining processes that improve adaptability
to the joining task and robustness to enable flexible manufacturing on a production
line. Therefore, the versatile SPR (V-SPR) and tumbling SPR (T-SPR) were developed.
Using the example of a mixed material combination HCT590X+Z (t0 = 1.0 mm) / EN
AW-6014 T4 (t0 = 2.0 mm), these processes were examined and compared with regard
to the binding mechanisms form closure and force closure using micrographs, non-destructive
resistance measurements and destructive torsion tests. For this purpose, a new
sample geometry was defined, and the methods were adapted to the SPR process variants.
author:
- first_name: Stephan
full_name: Lüder, Stephan
last_name: Lüder
- first_name: Pia Katharina
full_name: Holtkamp, Pia Katharina
id: '44935'
last_name: Holtkamp
- first_name: Simon
full_name: Wituschek, Simon
last_name: Wituschek
- 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: Michael
full_name: Lechner, Michael
last_name: Lechner
- first_name: Hans Christian
full_name: Schmale, Hans Christian
last_name: Schmale
citation:
ama: 'Lüder S, Holtkamp PK, Wituschek S, et al. Analysis of the binding mechanisms
depending on versatile process variants of self-piercing riveting. In: Meschut
G, Bobbert M, Duflou J, et al., eds. Materials Research Proceedings. Vol
52. Sheet Metal 2025. Materials Research Forum LLC; 2025:101-108. doi:10.21741/9781644903551-13'
apa: Lüder, S., Holtkamp, P. K., Wituschek, S., Bobbert, M., Meschut, G., Lechner,
M., & Schmale, H. C. (2025). Analysis of the binding mechanisms depending
on versatile process variants of self-piercing riveting. In G. Meschut, M. Bobbert,
J. Duflou, L. Fratini, H. Hagenah, P. A. F. Martins, M. Merklein, & F. Micari
(Eds.), Materials Research Proceedings (Vol. 52, pp. 101–108). Materials
Research Forum LLC. https://doi.org/10.21741/9781644903551-13
bibtex: '@inproceedings{Lüder_Holtkamp_Wituschek_Bobbert_Meschut_Lechner_Schmale_2025,
place={Millersville}, series={Sheet Metal 2025}, title={Analysis of the binding
mechanisms depending on versatile process variants of self-piercing riveting},
volume={52}, DOI={10.21741/9781644903551-13},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Lüder, Stephan and Holtkamp, Pia Katharina and Wituschek, Simon
and Bobbert, Mathias and Meschut, Gerson and Lechner, Michael and Schmale, Hans
Christian}, editor={Meschut, Gerson and Bobbert, Mathias and Duflou, Joost and
Fratini, Livan and Hagenah, Hinnerk and Martins, Paulo A. F. and Merklein, Marion
and Micari, Fabrizio}, year={2025}, pages={101–108}, collection={Sheet Metal 2025}
}'
chicago: 'Lüder, Stephan, Pia Katharina Holtkamp, Simon Wituschek, Mathias Bobbert,
Gerson Meschut, Michael Lechner, and Hans Christian Schmale. “Analysis of the
Binding Mechanisms Depending on Versatile Process Variants of Self-Piercing Riveting.”
In Materials Research Proceedings, edited by Gerson Meschut, Mathias Bobbert,
Joost Duflou, Livan Fratini, Hinnerk Hagenah, Paulo A. F. Martins, Marion Merklein,
and Fabrizio Micari, 52:101–8. Sheet Metal 2025. Millersville: Materials Research
Forum LLC, 2025. https://doi.org/10.21741/9781644903551-13.'
ieee: 'S. Lüder et al., “Analysis of the binding mechanisms depending on
versatile process variants of self-piercing riveting,” in Materials Research
Proceedings, Paderborn, 2025, vol. 52, pp. 101–108, doi: 10.21741/9781644903551-13.'
mla: Lüder, Stephan, et al. “Analysis of the Binding Mechanisms Depending on Versatile
Process Variants of Self-Piercing Riveting.” Materials Research Proceedings,
edited by Gerson Meschut et al., vol. 52, Materials Research Forum LLC, 2025,
pp. 101–08, doi:10.21741/9781644903551-13.
short: 'S. Lüder, P.K. Holtkamp, S. Wituschek, M. Bobbert, G. Meschut, M. Lechner,
H.C. Schmale, in: G. Meschut, M. Bobbert, J. Duflou, L. Fratini, H. Hagenah, P.A.F.
Martins, M. Merklein, F. Micari (Eds.), Materials Research Proceedings, Materials
Research Forum LLC, Millersville, 2025, pp. 101–108.'
conference:
end_date: 2025-04-03
location: Paderborn
name: 21st International Conference on Sheet Metal
start_date: 2025-04-01
date_created: 2025-06-20T10:13:22Z
date_updated: 2026-05-12T12:12:36Z
department:
- _id: '630'
- _id: '43'
- _id: '157'
doi: 10.21741/9781644903551-13
editor:
- first_name: Gerson
full_name: Meschut, Gerson
last_name: Meschut
- first_name: Mathias
full_name: Bobbert, Mathias
last_name: Bobbert
- first_name: Joost
full_name: Duflou, Joost
last_name: Duflou
- first_name: Livan
full_name: Fratini, Livan
last_name: Fratini
- first_name: Hinnerk
full_name: Hagenah, Hinnerk
last_name: Hagenah
- first_name: Paulo A. F.
full_name: Martins, Paulo A. F.
last_name: Martins
- first_name: Marion
full_name: Merklein, Marion
last_name: Merklein
- first_name: Fabrizio
full_name: Micari, Fabrizio
last_name: Micari
extern: '1'
intvolume: ' 52'
keyword:
- Joining
- Self-Piercing Riveting
- Sheet Metal
language:
- iso: eng
page: 101 - 108
place: Millersville
project:
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '138'
name: 'TRR 285 – A04: TRR 285 - Subproject A04'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '146'
name: 'TRR 285 – C02: TRR 285 - Subproject C02'
- _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
quality_controlled: '1'
series_title: Sheet Metal 2025
status: public
title: Analysis of the binding mechanisms depending on versatile process variants
of self-piercing riveting
type: conference
user_id: '7850'
volume: 52
year: '2025'
...
---
_id: '63662'
abstract:
- lang: eng
text: The accurate prediction of crack initiation and propagation is essential for
assessing the structural integrity of mechanically joined components and other
complex assemblies. To overcome the limitations of existing finite element tools,
a modular Python framework has been developed to automate three-dimensional crack
growth simulations. The program combines geometric reconstruction, adaptive remeshing,
and the numerical evaluation of fracture mechanics parameters within a single,
fully automated workflow. The framework builds on open-source components and remains
solver-independent, enabling straightforward integration with commercial or research
finite element codes. A dedicated sequence of modules performs all required steps,
from mesh separation and crack insertion to local submodeling, stress and displacement
mapping, and iterative crack-front update, without manual interaction. The methodology
was verified using a mini-compact tension (Mini-CT) specimen as a benchmark case.
The numerical results demonstrate the accurate reproduction of stress intensity
factors and energy release rates while achieving high computational efficiency
through localized refinement. The developed approach provides a robust basis for
crack growth simulations of geometrically complex or residual stress-affected
structures. Its high degree of automation and flexibility makes it particularly
suited for analyzing cracks in clinched and riveted joints, supporting the predictive
design and durability assessment of joined lightweight structures.
article_number: '384'
author:
- first_name: Sven
full_name: Krome, Sven
id: '57245'
last_name: Krome
- first_name: Tobias
full_name: Duffe, Tobias
id: '41322'
last_name: Duffe
- first_name: Gunter
full_name: Kullmer, Gunter
id: '291'
last_name: Kullmer
- first_name: Britta
full_name: Schramm, Britta
id: '4668'
last_name: Schramm
- first_name: Richard
full_name: Ostwald, Richard
id: '106876'
last_name: Ostwald
orcid: 0000-0003-2147-8444
citation:
ama: Krome S, Duffe T, Kullmer G, Schramm B, Ostwald R. Validation and Verification
of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D. Applied
Sciences. 2025;16(1). doi:10.3390/app16010384
apa: Krome, S., Duffe, T., Kullmer, G., Schramm, B., & Ostwald, R. (2025). Validation
and Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D.
Applied Sciences, 16(1), Article 384. https://doi.org/10.3390/app16010384
bibtex: '@article{Krome_Duffe_Kullmer_Schramm_Ostwald_2025, title={Validation and
Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D},
volume={16}, DOI={10.3390/app16010384},
number={1384}, journal={Applied Sciences}, publisher={MDPI AG}, author={Krome,
Sven and Duffe, Tobias and Kullmer, Gunter and Schramm, Britta and Ostwald, Richard},
year={2025} }'
chicago: Krome, Sven, Tobias Duffe, Gunter Kullmer, Britta Schramm, and Richard
Ostwald. “Validation and Verification of Novel Three-Dimensional Crack Growth
Simulation Software GmshCrack3D.” Applied Sciences 16, no. 1 (2025). https://doi.org/10.3390/app16010384.
ieee: 'S. Krome, T. Duffe, G. Kullmer, B. Schramm, and R. Ostwald, “Validation and
Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D,”
Applied Sciences, vol. 16, no. 1, Art. no. 384, 2025, doi: 10.3390/app16010384.'
mla: Krome, Sven, et al. “Validation and Verification of Novel Three-Dimensional
Crack Growth Simulation Software GmshCrack3D.” Applied Sciences, vol. 16,
no. 1, 384, MDPI AG, 2025, doi:10.3390/app16010384.
short: S. Krome, T. Duffe, G. Kullmer, B. Schramm, R. Ostwald, Applied Sciences
16 (2025).
date_created: 2026-01-20T08:47:40Z
date_updated: 2026-05-12T12:46:22Z
department:
- _id: '9'
- _id: '952'
- _id: '321'
doi: 10.3390/app16010384
intvolume: ' 16'
issue: '1'
language:
- iso: eng
project:
- _id: '132'
name: TRR 285 - Project Area B
- _id: '143'
name: TRR 285 - Subproject B04
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: Applied Sciences
publication_identifier:
issn:
- 2076-3417
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Validation and Verification of Novel Three-Dimensional Crack Growth Simulation
Software GmshCrack3D
type: journal_article
user_id: '7850'
volume: 16
year: '2025'
...
---
_id: '61822'
abstract:
- lang: eng
text: The effect of corrosion on mechanically joined components is not well understood.
While recent research shows that a brief exposure of clinched specimens to a salt
spray environment improves the specimens’ fatigue life, other research shows a
decrease in load bearing capabilities with increasing corrosion times. These studies
primarily focus on galvanic corrosion. It is not entirely clear how other corrosion
phenomena, such as pitting corrosion, affect the fatigue life of clinched joints.
In this work, a numerical model is used, which is able to simulate corrosion pit
growth in EN AW-6014. The experimental polarization data of EN AW-6014 are used
directly in the calculation of the interface kinetics parameter of the model.
author:
- first_name: Sven
full_name: Harzheim, Sven
last_name: Harzheim
- first_name: Chin
full_name: Chen, Chin
last_name: Chen
- first_name: Katharina
full_name: Hollmer, Katharina
last_name: Hollmer
- first_name: Martin
full_name: Hofmann, Martin
last_name: Hofmann
- first_name: Martina
full_name: Zimmermann, Martina
last_name: Zimmermann
- first_name: Thomas
full_name: Wallmersperger, Thomas
last_name: Wallmersperger
citation:
ama: Harzheim S, Chen C, Hollmer K, Hofmann M, Zimmermann M, Wallmersperger T. Numerical
investigation of pitting corrosion in clinched joints. Acta Mechanica.
Published online 2025. doi:10.1007/s00707-025-04248-2
apa: Harzheim, S., Chen, C., Hollmer, K., Hofmann, M., Zimmermann, M., & Wallmersperger,
T. (2025). Numerical investigation of pitting corrosion in clinched joints. Acta
Mechanica. https://doi.org/10.1007/s00707-025-04248-2
bibtex: '@article{Harzheim_Chen_Hollmer_Hofmann_Zimmermann_Wallmersperger_2025,
title={Numerical investigation of pitting corrosion in clinched joints}, DOI={10.1007/s00707-025-04248-2},
journal={Acta Mechanica}, publisher={Springer Science and Business Media LLC},
author={Harzheim, Sven and Chen, Chin and Hollmer, Katharina and Hofmann, Martin
and Zimmermann, Martina and Wallmersperger, Thomas}, year={2025} }'
chicago: Harzheim, Sven, Chin Chen, Katharina Hollmer, Martin Hofmann, Martina Zimmermann,
and Thomas Wallmersperger. “Numerical Investigation of Pitting Corrosion in Clinched
Joints.” Acta Mechanica, 2025. https://doi.org/10.1007/s00707-025-04248-2.
ieee: 'S. Harzheim, C. Chen, K. Hollmer, M. Hofmann, M. Zimmermann, and T. Wallmersperger,
“Numerical investigation of pitting corrosion in clinched joints,” Acta Mechanica,
2025, doi: 10.1007/s00707-025-04248-2.'
mla: Harzheim, Sven, et al. “Numerical Investigation of Pitting Corrosion in Clinched
Joints.” Acta Mechanica, Springer Science and Business Media LLC, 2025,
doi:10.1007/s00707-025-04248-2.
short: S. Harzheim, C. Chen, K. Hollmer, M. Hofmann, M. Zimmermann, T. Wallmersperger,
Acta Mechanica (2025).
date_created: 2025-10-13T15:17:35Z
date_updated: 2026-05-12T12:56:55Z
doi: 10.1007/s00707-025-04248-2
language:
- iso: eng
project:
- _id: '141'
name: TRR 285 - Subproject B02
- _id: '142'
name: TRR 285 - Subproject B03
- _id: '132'
name: TRR 285 - Project Area B
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: Acta Mechanica
publication_identifier:
issn:
- 0001-5970
- 1619-6937
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Numerical investigation of pitting corrosion in clinched joints
type: journal_article
user_id: '7850'
year: '2025'
...
---
_id: '60285'
abstract:
- lang: eng
text: This paper examines the impact of a rotationally superimposed punch stroke
on the binding mechanisms of clinched joints of aluminum sheets. As part of the
development of a method for ensuring the versatility of clinching, an additional
rotational movement of the punch was introduced as a control variable to influence
friction in the mechanical joining process. The effect of rotational superimposition
on the force-displacement curve of the clinching processes was investigated using
four test variants with different kinematics. The primary objective was to evaluate
the binding mechanisms that maintain the integrity of the clinched joint. To evaluate
the force closure of the resulting joint, two testing methods were employed throughout
the course of the research, non-destructive resistance measurement using four-wire
sensing method and destructive torsion testing. A crucial factor influencing the
efficacy of the process is surface cleanliness, as contaminants between joining
partners can impede the effectiveness of the clinched joint. Therefore, all specimens
were meticulously cleaned prior to experimentation. This method exhibits promising
potential in creating clinched joints that align with the demands of flexible
manufacturing environments.
article_number: '01086'
author:
- first_name: Stephan
full_name: Lüder, Stephan
last_name: Lüder
- first_name: Eugen
full_name: Wolf, Eugen
last_name: Wolf
- first_name: Hans Christian
full_name: Schmale, Hans Christian
last_name: Schmale
- first_name: Alexander
full_name: Brosius, Alexander
last_name: Brosius
citation:
ama: 'Lüder S, Wolf E, Schmale HC, Brosius A. Investigation of the impact of a rotationally
superimposed punch stroke on the binding mechanisms of a clinched joint. In: MATEC
Web of Conferences. Vol 408. EDP Sciences; 2025. doi:10.1051/matecconf/202540801086'
apa: Lüder, S., Wolf, E., Schmale, H. C., & Brosius, A. (2025). Investigation
of the impact of a rotationally superimposed punch stroke on the binding mechanisms
of a clinched joint. MATEC Web of Conferences, 408, Article 01086.
https://doi.org/10.1051/matecconf/202540801086
bibtex: '@inproceedings{Lüder_Wolf_Schmale_Brosius_2025, title={Investigation of
the impact of a rotationally superimposed punch stroke on the binding mechanisms
of a clinched joint}, volume={408}, DOI={10.1051/matecconf/202540801086},
number={01086}, booktitle={MATEC Web of Conferences}, publisher={EDP Sciences},
author={Lüder, Stephan and Wolf, Eugen and Schmale, Hans Christian and Brosius,
Alexander}, year={2025} }'
chicago: Lüder, Stephan, Eugen Wolf, Hans Christian Schmale, and Alexander Brosius.
“Investigation of the Impact of a Rotationally Superimposed Punch Stroke on the
Binding Mechanisms of a Clinched Joint.” In MATEC Web of Conferences, Vol.
408. EDP Sciences, 2025. https://doi.org/10.1051/matecconf/202540801086.
ieee: 'S. Lüder, E. Wolf, H. C. Schmale, and A. Brosius, “Investigation of the impact
of a rotationally superimposed punch stroke on the binding mechanisms of a clinched
joint,” in MATEC Web of Conferences, Lisbon, 2025, vol. 408, doi: 10.1051/matecconf/202540801086.'
mla: Lüder, Stephan, et al. “Investigation of the Impact of a Rotationally Superimposed
Punch Stroke on the Binding Mechanisms of a Clinched Joint.” MATEC Web of Conferences,
vol. 408, 01086, EDP Sciences, 2025, doi:10.1051/matecconf/202540801086.
short: 'S. Lüder, E. Wolf, H.C. Schmale, A. Brosius, in: MATEC Web of Conferences,
EDP Sciences, 2025.'
conference:
end_date: 2025-06-05
location: Lisbon
name: '44th Conference of the International Deep Drawing Research Group (IDDRG 2025) '
start_date: 2025-06-01
date_created: 2025-06-20T06:57:16Z
date_updated: 2026-05-12T13:08:56Z
department:
- _id: '630'
doi: 10.1051/matecconf/202540801086
extern: '1'
intvolume: ' 408'
keyword:
- Joining
- Sheet Metal
- Tribology
- Clinching
language:
- iso: eng
project:
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '138'
name: 'TRR 285 – A04: TRR 285 - Subproject A04'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '140'
name: 'TRR 285 – B01: TRR 285 - Subproject B01'
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: MATEC Web of Conferences
publication_identifier:
issn:
- 2261-236X
publication_status: published
publisher: EDP Sciences
quality_controlled: '1'
status: public
title: Investigation of the impact of a rotationally superimposed punch stroke on
the binding mechanisms of a clinched joint
type: conference
user_id: '7850'
volume: 408
year: '2025'
...
---
_id: '62172'
author:
- first_name: Stephan Matthias
full_name: Kokew, Stephan Matthias
id: '111362'
last_name: Kokew
orcid: 0009-0005-6980-2727
- first_name: Raid
full_name: Al-Daghistani, Raid
last_name: Al-Daghistani
citation:
ama: 'Kokew SM, Al-Daghistani R. Bericht: Ressourcen für Resilienz in islamischer
Tradition. Theologische, ethische und mystische Perspektiven. Cibedo-Beiträge.
2025;2/2025:88–89.'
apa: 'Kokew, S. M., & Al-Daghistani, R. (2025). Bericht: Ressourcen für Resilienz
in islamischer Tradition. Theologische, ethische und mystische Perspektiven. Cibedo-Beiträge,
2/2025, 88–89.'
bibtex: '@article{Kokew_Al-Daghistani_2025, title={Bericht: Ressourcen für Resilienz
in islamischer Tradition. Theologische, ethische und mystische Perspektiven},
volume={2/2025}, journal={Cibedo-Beiträge}, publisher={Aschendorff}, author={Kokew,
Stephan Matthias and Al-Daghistani, Raid}, year={2025}, pages={88–89.} }'
chicago: 'Kokew, Stephan Matthias, and Raid Al-Daghistani. “Bericht: Ressourcen
für Resilienz in islamischer Tradition. Theologische, ethische und mystische Perspektiven.”
Cibedo-Beiträge 2/2025 (2025): 88–89.'
ieee: 'S. M. Kokew and R. Al-Daghistani, “Bericht: Ressourcen für Resilienz in islamischer
Tradition. Theologische, ethische und mystische Perspektiven,” Cibedo-Beiträge,
vol. 2/2025, pp. 88–89., 2025.'
mla: 'Kokew, Stephan Matthias, and Raid Al-Daghistani. “Bericht: Ressourcen für
Resilienz in islamischer Tradition. Theologische, ethische und mystische Perspektiven.”
Cibedo-Beiträge, vol. 2/2025, Aschendorff, 2025, pp. 88–89.'
short: S.M. Kokew, R. Al-Daghistani, Cibedo-Beiträge 2/2025 (2025) 88–89.
date_created: 2025-11-12T21:25:04Z
date_updated: 2026-05-12T13:41:38Z
department:
- _id: '469'
language:
- iso: ger
page: 88–89.
popular_science: '1'
publication: Cibedo-Beiträge
publication_identifier:
issn:
- 1864-9483
publication_status: published
publisher: Aschendorff
status: public
title: 'Bericht: Ressourcen für Resilienz in islamischer Tradition. Theologische,
ethische und mystische Perspektiven'
type: journal_article
user_id: '111362'
volume: 2/2025
year: '2025'
...
---
_id: '61940'
author:
- first_name: Christoph
full_name: Bürgel, Christoph
id: '58448'
last_name: Bürgel
citation:
ama: 'Bürgel C. Innovationen im Kerncurriculum Spanisch : Lexiko-Grammatik im Fokus.
Niedersächsi- sches Kultusministerium (Hrsg). Published online 2025.'
apa: 'Bürgel, C. (2025). Innovationen im Kerncurriculum Spanisch : Lexiko-Grammatik
im Fokus. Niedersächsi- Sches Kultusministerium (Hrsg.).'
bibtex: '@article{Bürgel_2025, title={Innovationen im Kerncurriculum Spanisch :
Lexiko-Grammatik im Fokus}, journal={Niedersächsi- sches Kultusministerium
(Hrsg.)}, publisher={Schulverwaltungsblatt für Niedersachsen 5, 301-302}, author={Bürgel,
Christoph}, year={2025} }'
chicago: 'Bürgel, Christoph. “Innovationen Im Kerncurriculum Spanisch : Lexiko-Grammatik
Im Fokus.” Niedersächsi- Sches Kultusministerium (Hrsg.), 2025.'
ieee: 'C. Bürgel, “Innovationen im Kerncurriculum Spanisch : Lexiko-Grammatik im
Fokus,” Niedersächsi- sches Kultusministerium (Hrsg.), 2025.'
mla: 'Bürgel, Christoph. “Innovationen Im Kerncurriculum Spanisch : Lexiko-Grammatik
Im Fokus.” Niedersächsi- Sches Kultusministerium (Hrsg.), Schulverwaltungsblatt
für Niedersachsen 5, 301-302, 2025.'
short: C. Bürgel, Niedersächsi- Sches Kultusministerium (Hrsg.) (2025).
date_created: 2025-10-23T13:07:30Z
date_updated: 2026-05-13T08:31:58Z
language:
- iso: eng
publication: Niedersächsi- sches Kultusministerium (Hrsg.)
publisher: Schulverwaltungsblatt für Niedersachsen 5, 301-302
status: public
title: 'Innovationen im Kerncurriculum Spanisch : Lexiko-Grammatik im Fokus'
type: journal_article
user_id: '43976'
year: '2025'
...
---
_id: '61937'
author:
- first_name: Christoph
full_name: Bürgel, Christoph
id: '58448'
last_name: Bürgel
- first_name: Benjamin
full_name: Inal, Benjamin
last_name: Inal
citation:
ama: Bürgel C, Inal B. Fremdsprachenlehren und -lernen im Spannungsfeld von digital
und analog . Fremdsprachenlehren und -lernen im Spannungsfeld von digital und
analog . Published online 2025.
apa: Bürgel, C., & Inal, B. (2025). Fremdsprachenlehren und -lernen im Spannungsfeld
von digital und analog . Fremdsprachenlehren Und -Lernen Im Spannungsfeld von
Digital Und Analog .
bibtex: '@article{Bürgel_Inal_2025, title={Fremdsprachenlehren und -lernen im Spannungsfeld
von digital und analog }, journal={Fremdsprachenlehren und -lernen im Spannungsfeld
von digital und analog }, publisher={Tübingen: Narr}, author={Bürgel, Christoph
and Inal, Benjamin}, year={2025} }'
chicago: Bürgel, Christoph, and Benjamin Inal. “Fremdsprachenlehren Und -Lernen
Im Spannungsfeld von Digital Und Analog .” Fremdsprachenlehren Und -Lernen
Im Spannungsfeld von Digital Und Analog , 2025.
ieee: C. Bürgel and B. Inal, “Fremdsprachenlehren und -lernen im Spannungsfeld von
digital und analog ,” Fremdsprachenlehren und -lernen im Spannungsfeld von
digital und analog , 2025.
mla: 'Bürgel, Christoph, and Benjamin Inal. “Fremdsprachenlehren Und -Lernen Im
Spannungsfeld von Digital Und Analog .” Fremdsprachenlehren Und -Lernen Im
Spannungsfeld von Digital Und Analog , Tübingen: Narr, 2025.'
short: C. Bürgel, B. Inal, Fremdsprachenlehren Und -Lernen Im Spannungsfeld von
Digital Und Analog (2025).
date_created: 2025-10-23T12:58:33Z
date_updated: 2026-05-13T08:32:10Z
language:
- iso: eng
publication: 'Fremdsprachenlehren und -lernen im Spannungsfeld von digital und analog '
publisher: 'Tübingen: Narr'
status: public
title: 'Fremdsprachenlehren und -lernen im Spannungsfeld von digital und analog '
type: journal_article
user_id: '43976'
year: '2025'
...
---
_id: '61038'
author:
- first_name: Christoph
full_name: Bürgel, Christoph
last_name: Bürgel
citation:
ama: 'Bürgel C. Unidades fraseológicas - ¿qué si no? Phraseologische Sprachbewusstheit
entwickeln, in: Der Fremdsprachliche Unterricht Spanisch. In: Bürgel C, ed. ;
2025:16-22.'
apa: 'Bürgel, C. (2025). Unidades fraseológicas - ¿qué si no? Phraseologische
Sprachbewusstheit entwickeln, in: Der Fremdsprachliche Unterricht Spanisch
(C. Bürgel, Ed. & Trans.; Issue 89, pp. 16–22).'
bibtex: '@inbook{Bürgel_2025, title={Unidades fraseológicas - ¿qué si no? Phraseologische
Sprachbewusstheit entwickeln, in: Der Fremdsprachliche Unterricht Spanisch}, number={89},
author={Bürgel, Christoph}, editor={Bürgel, Christoph, Bürgel, Christoph}, year={2025},
pages={16–22} }'
chicago: 'Bürgel, Christoph. “Unidades Fraseológicas - ¿qué Si No? Phraseologische
Sprachbewusstheit Entwickeln, in: Der Fremdsprachliche Unterricht Spanisch.” edited
and translated by Christoph Bürgel, 16–22, 2025.'
ieee: 'C. Bürgel, “Unidades fraseológicas - ¿qué si no? Phraseologische Sprachbewusstheit
entwickeln, in: Der Fremdsprachliche Unterricht Spanisch,” no. 89, C. Bürgel,
Ed. 2025, pp. 16–22.'
mla: 'Bürgel, Christoph. Unidades Fraseológicas - ¿qué Si No? Phraseologische
Sprachbewusstheit Entwickeln, in: Der Fremdsprachliche Unterricht Spanisch.
Edited by Christoph Bürgel, Translated by Christoph Bürgel, no. 89, 2025, pp.
16–22.'
short: 'C. Bürgel, in: C. Bürgel (Ed.), 2025, pp. 16–22.'
date_created: 2025-08-27T09:45:46Z
date_updated: 2026-05-13T08:32:55Z
editor:
- first_name: Christoph
full_name: Bürgel, Christoph
last_name: Bürgel
issue: '89'
language:
- iso: eng
page: 16-22
status: public
title: 'Unidades fraseológicas - ¿qué si no? Phraseologische Sprachbewusstheit entwickeln,
in: Der Fremdsprachliche Unterricht Spanisch'
translator:
- first_name: Christoph
full_name: Bürgel, Christoph
id: '58448'
last_name: Bürgel
type: translation_chapter
user_id: '43976'
year: '2025'
...