---
_id: '59782'
author:
- first_name: M.
full_name: Kallionpää, M.
last_name: Kallionpää
- first_name: Axel
full_name: Berndt, Axel
id: '55565'
last_name: Berndt
- first_name: D. A.
full_name: Mauro, D. A.
last_name: Mauro
- first_name: D.
full_name: Dziwis, D.
last_name: Dziwis
citation:
ama: 'Kallionpää M, Berndt A, Mauro DA, Dziwis D. Non/Repeat: Three Case Studies
of Non-linear Live-Music Practices. In: AM.ICAD: Audio Mostly & ICAD Joint
Conf. ACM; 2025.'
apa: 'Kallionpää, M., Berndt, A., Mauro, D. A., & Dziwis, D. (2025). Non/Repeat:
Three Case Studies of Non-linear Live-Music Practices. AM.ICAD: Audio Mostly
& ICAD Joint Conf.'
bibtex: '@inproceedings{Kallionpää_Berndt_Mauro_Dziwis_2025, place={Coimbra, Portugal},
title={Non/Repeat: Three Case Studies of Non-linear Live-Music Practices}, booktitle={AM.ICAD:
Audio Mostly & ICAD Joint Conf.}, publisher={ACM}, author={Kallionpää, M.
and Berndt, Axel and Mauro, D. A. and Dziwis, D.}, year={2025} }'
chicago: 'Kallionpää, M., Axel Berndt, D. A. Mauro, and D. Dziwis. “Non/Repeat:
Three Case Studies of Non-Linear Live-Music Practices.” In AM.ICAD: Audio Mostly
& ICAD Joint Conf. Coimbra, Portugal: ACM, 2025.'
ieee: 'M. Kallionpää, A. Berndt, D. A. Mauro, and D. Dziwis, “Non/Repeat: Three
Case Studies of Non-linear Live-Music Practices,” 2025.'
mla: 'Kallionpää, M., et al. “Non/Repeat: Three Case Studies of Non-Linear Live-Music
Practices.” AM.ICAD: Audio Mostly & ICAD Joint Conf., ACM, 2025.'
short: 'M. Kallionpää, A. Berndt, D.A. Mauro, D. Dziwis, in: AM.ICAD: Audio Mostly
& ICAD Joint Conf., ACM, Coimbra, Portugal, 2025.'
date_created: 2025-05-03T08:40:17Z
date_updated: 2026-02-24T15:22:14Z
department:
- _id: '36'
- _id: '233'
- _id: '870'
language:
- iso: eng
place: Coimbra, Portugal
publication: 'AM.ICAD: Audio Mostly & ICAD Joint Conf.'
publisher: ACM
status: public
title: 'Non/Repeat: Three Case Studies of Non-linear Live-Music Practices'
type: conference
user_id: '14972'
year: '2025'
...
---
_id: '59750'
author:
- first_name: D. A.
full_name: Mauro, D. A.
last_name: Mauro
- first_name: Axel
full_name: Berndt, Axel
id: '55565'
last_name: Berndt
citation:
ama: 'Mauro DA, Berndt A. Automatic Rendering of Ramati’s Ludus Musicalis Scores.
In: 22nd Sound and Music Computing Conf. (SMC 2025), Auditory Landscapes.
; 2025.'
apa: Mauro, D. A., & Berndt, A. (2025). Automatic Rendering of Ramati’s Ludus
Musicalis Scores. 22nd Sound and Music Computing Conf. (SMC 2025), Auditory
Landscapes.
bibtex: '@inproceedings{Mauro_Berndt_2025, place={Graz, Austria}, title={Automatic
Rendering of Ramati’s Ludus Musicalis Scores}, booktitle={22nd Sound and Music
Computing Conf. (SMC 2025), Auditory Landscapes}, author={Mauro, D. A. and Berndt,
Axel}, year={2025} }'
chicago: Mauro, D. A., and Axel Berndt. “Automatic Rendering of Ramati’s Ludus Musicalis
Scores.” In 22nd Sound and Music Computing Conf. (SMC 2025), Auditory Landscapes.
Graz, Austria, 2025.
ieee: D. A. Mauro and A. Berndt, “Automatic Rendering of Ramati’s Ludus Musicalis
Scores,” 2025.
mla: Mauro, D. A., and Axel Berndt. “Automatic Rendering of Ramati’s Ludus Musicalis
Scores.” 22nd Sound and Music Computing Conf. (SMC 2025), Auditory Landscapes,
2025.
short: 'D.A. Mauro, A. Berndt, in: 22nd Sound and Music Computing Conf. (SMC 2025),
Auditory Landscapes, Graz, Austria, 2025.'
date_created: 2025-05-01T13:16:17Z
date_updated: 2026-02-24T15:21:30Z
department:
- _id: '36'
- _id: '233'
- _id: '870'
language:
- iso: eng
place: Graz, Austria
publication: 22nd Sound and Music Computing Conf. (SMC 2025), Auditory Landscapes
status: public
title: Automatic Rendering of Ramati’s Ludus Musicalis Scores
type: conference
user_id: '14972'
year: '2025'
...
---
_id: '63830'
abstract:
- lang: eng
text: " This study investigates the effect of dispersion gas (DG) flow on the formation
and properties of maghemite (γ-Fe2O3) nanoparticles using standardized SpraySyn
burners (SS1 and SS2). Several diagnostics were employed to characterize the spray
and nanoparticles. \r\nIncreasing DG flow (6 - 12 slm) results in smaller droplet
sizes (DS), cooler flame temperatures, shorter high-temperature droplet/particle
residence times, and smaller agglomerates in the size range of 5 - 12 nm with
narrower primary particle size distribution, corresponding to higher mass fractal
dimensions, as supported by TEM and SMPS analysis, resulting in more compact agglomerates.
BET and TEM confirmed decreasing primary particle sizes with increasing DG flow.
Raman and XRD analyses predominantly identified maghemite, which shows a bimodal
distribution of crystallite sizes, while SS1 samples have a greater proportion
of larger crystallites.\r\nThe self-preserving size distributions of agglomerates
with a geometric standard deviation of 1.5 are reached faster with increasing
DG flow. The barrier effect of DG observed in SS1 leads to slower droplet combustion
kinetics, higher temperatures, and delayed precursor release, which, along with
downstream flow recirculation, result in significantly higher agglomeration rates
outside the visible flame. SS2 demonstrates improved atomization, more stable
flames, and finer, uniform nanoparticles with less carbonaceous residues (CR).
Conversely, SS1 showed broader DS distributions and higher CR levels on the γ-Fe2O3
surface, especially at higher DG flow.\r\nThis work highlights the essential role
of DG flow and nozzle geometry in controlling droplet evaporation, flame stability,
and nanoparticle growth, offering insights for optimizing SFS and validating numerical
models.\r\n"
article_number: '121992'
article_type: original
author:
- first_name: Orlando
full_name: Massopo, Orlando
last_name: Massopo
- first_name: Ricardo
full_name: Tischendorf, Ricardo
last_name: Tischendorf
- first_name: Munko
full_name: Gonchikzhapov, Munko
last_name: Gonchikzhapov
- first_name: Tina
full_name: Kasper, Tina
last_name: Kasper
- first_name: Peter
full_name: Augustin, Peter
last_name: Augustin
- first_name: Burak
full_name: Özer, Burak
last_name: Özer
- first_name: Manuel
full_name: Reddemann, Manuel
last_name: Reddemann
- first_name: Reinhold
full_name: Kneer, Reinhold
last_name: Kneer
- first_name: Mohammed-Ali
full_name: Sheikh, Mohammed-Ali
last_name: Sheikh
- first_name: Aydan Akyildiz
full_name: Mert, Aydan Akyildiz
last_name: Mert
- first_name: Hartmut
full_name: Wiggers, Hartmut
last_name: Wiggers
- first_name: Hans-Joachim
full_name: Schmid, Hans-Joachim
last_name: Schmid
citation:
ama: Massopo O, Tischendorf R, Gonchikzhapov M, et al. Influence of dispersion gas
flow on the spray characteristics and γ-Fe2O3 nanoparticles formation and properties
in reference SpraySyn burners. Powder Technology. 2025;470. doi:10.1016/j.powtec.2025.121992
apa: Massopo, O., Tischendorf, R., Gonchikzhapov, M., Kasper, T., Augustin, P.,
Özer, B., Reddemann, M., Kneer, R., Sheikh, M.-A., Mert, A. A., Wiggers, H., &
Schmid, H.-J. (2025). Influence of dispersion gas flow on the spray characteristics
and γ-Fe2O3 nanoparticles formation and properties in reference SpraySyn burners.
Powder Technology, 470, Article 121992. https://doi.org/10.1016/j.powtec.2025.121992
bibtex: '@article{Massopo_Tischendorf_Gonchikzhapov_Kasper_Augustin_Özer_Reddemann_Kneer_Sheikh_Mert_et
al._2025, title={Influence of dispersion gas flow on the spray characteristics
and γ-Fe2O3 nanoparticles formation and properties in reference SpraySyn burners},
volume={470}, DOI={10.1016/j.powtec.2025.121992},
number={121992}, journal={Powder Technology}, publisher={Elsevier BV}, author={Massopo,
Orlando and Tischendorf, Ricardo and Gonchikzhapov, Munko and Kasper, Tina and
Augustin, Peter and Özer, Burak and Reddemann, Manuel and Kneer, Reinhold and
Sheikh, Mohammed-Ali and Mert, Aydan Akyildiz and et al.}, year={2025} }'
chicago: Massopo, Orlando, Ricardo Tischendorf, Munko Gonchikzhapov, Tina Kasper,
Peter Augustin, Burak Özer, Manuel Reddemann, et al. “Influence of Dispersion
Gas Flow on the Spray Characteristics and γ-Fe2O3 Nanoparticles Formation and
Properties in Reference SpraySyn Burners.” Powder Technology 470 (2025).
https://doi.org/10.1016/j.powtec.2025.121992.
ieee: 'O. Massopo et al., “Influence of dispersion gas flow on the spray
characteristics and γ-Fe2O3 nanoparticles formation and properties in reference
SpraySyn burners,” Powder Technology, vol. 470, Art. no. 121992, 2025,
doi: 10.1016/j.powtec.2025.121992.'
mla: Massopo, Orlando, et al. “Influence of Dispersion Gas Flow on the Spray Characteristics
and γ-Fe2O3 Nanoparticles Formation and Properties in Reference SpraySyn Burners.”
Powder Technology, vol. 470, 121992, Elsevier BV, 2025, doi:10.1016/j.powtec.2025.121992.
short: O. Massopo, R. Tischendorf, M. Gonchikzhapov, T. Kasper, P. Augustin, B.
Özer, M. Reddemann, R. Kneer, M.-A. Sheikh, A.A. Mert, H. Wiggers, H.-J. Schmid,
Powder Technology 470 (2025).
date_created: 2026-02-02T11:41:04Z
date_updated: 2026-02-25T07:45:44Z
doi: 10.1016/j.powtec.2025.121992
intvolume: ' 470'
keyword:
- Spray flame synthesis
- iron oxide nanoparticle
- SpraySyn burner
- Dispersion gas
- Coaxial atomization
- HiaT-SMPS
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
publication: Powder Technology
publication_identifier:
issn:
- 0032-5910
publication_status: published
publisher: Elsevier BV
status: public
title: Influence of dispersion gas flow on the spray characteristics and γ-Fe2O3 nanoparticles
formation and properties in reference SpraySyn burners
type: journal_article
user_id: '98419'
volume: 470
year: '2025'
...
---
_id: '64293'
author:
- first_name: Nils Christopher
full_name: Gerhardt, Nils Christopher
id: '115298'
last_name: Gerhardt
orcid: 0009-0002-5538-231X
- first_name: Martin R.
full_name: Hofmann, Martin R.
last_name: Hofmann
- first_name: Leon
full_name: Zens, Leon
last_name: Zens
- first_name: Jens
full_name: Möller, Jens
last_name: Möller
- first_name: Vira
full_name: Besaga, Vira
last_name: Besaga
citation:
ama: 'Gerhardt NC, Hofmann MR, Zens L, Möller J, Besaga V. Quantitative holography
for the characterisation of semiconductor amplifieres and lasers. In: Practical
Holography XXXIX: Displays, Materials, and Applications. ; 2025. doi:10.1117/12.3041318'
apa: 'Gerhardt, N. C., Hofmann, M. R., Zens, L., Möller, J., & Besaga, V. (2025).
Quantitative holography for the characterisation of semiconductor amplifieres
and lasers. Practical Holography XXXIX: Displays, Materials, and Applications.
https://doi.org/10.1117/12.3041318'
bibtex: '@inproceedings{Gerhardt_Hofmann_Zens_Möller_Besaga_2025, title={Quantitative
holography for the characterisation of semiconductor amplifieres and lasers},
DOI={10.1117/12.3041318}, booktitle={Practical
Holography XXXIX: Displays, Materials, and Applications}, author={Gerhardt, Nils
Christopher and Hofmann, Martin R. and Zens, Leon and Möller, Jens and Besaga,
Vira}, year={2025} }'
chicago: 'Gerhardt, Nils Christopher, Martin R. Hofmann, Leon Zens, Jens Möller,
and Vira Besaga. “Quantitative Holography for the Characterisation of Semiconductor
Amplifieres and Lasers.” In Practical Holography XXXIX: Displays, Materials,
and Applications, 2025. https://doi.org/10.1117/12.3041318.'
ieee: 'N. C. Gerhardt, M. R. Hofmann, L. Zens, J. Möller, and V. Besaga, “Quantitative
holography for the characterisation of semiconductor amplifieres and lasers,”
2025, doi: 10.1117/12.3041318.'
mla: 'Gerhardt, Nils Christopher, et al. “Quantitative Holography for the Characterisation
of Semiconductor Amplifieres and Lasers.” Practical Holography XXXIX: Displays,
Materials, and Applications, 2025, doi:10.1117/12.3041318.'
short: 'N.C. Gerhardt, M.R. Hofmann, L. Zens, J. Möller, V. Besaga, in: Practical
Holography XXXIX: Displays, Materials, and Applications, 2025.'
date_created: 2026-02-20T10:03:50Z
date_updated: 2026-02-25T09:34:37Z
department:
- _id: '977'
doi: 10.1117/12.3041318
language:
- iso: eng
publication: 'Practical Holography XXXIX: Displays, Materials, and Applications'
status: public
title: Quantitative holography for the characterisation of semiconductor amplifieres
and lasers
type: conference
user_id: '15911'
year: '2025'
...
---
_id: '50299'
abstract:
- lang: eng
text: "A finite classical polar space of rank $n$ consists of the totally isotropic\r\nsubspaces
of a finite vector space over $\\mathbb{F}_q$ equipped with a\r\nnondegenerate
form such that $n$ is the maximal dimension of such a subspace. A\r\n$t$-$(n,k,\\lambda)$
design in a finite classical polar space of rank $n$ is a\r\ncollection $Y$ of
totally isotropic $k$-spaces such that each totally isotropic\r\n$t$-space is
contained in exactly $\\lambda$ members of $Y$. Nontrivial examples\r\nare currently
only known for $t\\leq 2$. We show that $t$-$(n,k,\\lambda)$\r\ndesigns in polar
spaces exist for all $t$ and $q$ provided that\r\n$k>\\frac{21}{2}t$ and $n$ is
sufficiently large enough. The proof is based on a\r\nprobabilistic method by
Kuperberg, Lovett, and Peled, and it is thus\r\nnonconstructive."
author:
- first_name: Charlene
full_name: Weiß, Charlene
id: '70420'
last_name: Weiß
citation:
ama: Weiß C. Nontrivial $t$-designs in polar spaces exist for all $t$. Des Codes
Cryptogr. 2025;93:971-981. doi:10.1007/s10623-024-01471-1
apa: Weiß, C. (2025). Nontrivial $t$-designs in polar spaces exist for all $t$.
Des. Codes Cryptogr., 93, 971–981. https://doi.org/10.1007/s10623-024-01471-1
bibtex: '@article{Weiß_2025, title={Nontrivial $t$-designs in polar spaces exist
for all $t$}, volume={93}, DOI={10.1007/s10623-024-01471-1},
journal={Des. Codes Cryptogr.}, author={Weiß, Charlene}, year={2025}, pages={971–981}
}'
chicago: 'Weiß, Charlene. “Nontrivial $t$-Designs in Polar Spaces Exist for All
$t$.” Des. Codes Cryptogr. 93 (2025): 971–81. https://doi.org/10.1007/s10623-024-01471-1.'
ieee: 'C. Weiß, “Nontrivial $t$-designs in polar spaces exist for all $t$,” Des.
Codes Cryptogr., vol. 93, pp. 971–981, 2025, doi: 10.1007/s10623-024-01471-1.'
mla: Weiß, Charlene. “Nontrivial $t$-Designs in Polar Spaces Exist for All $t$.”
Des. Codes Cryptogr., vol. 93, 2025, pp. 971–81, doi:10.1007/s10623-024-01471-1.
short: C. Weiß, Des. Codes Cryptogr. 93 (2025) 971–981.
date_created: 2024-01-08T14:39:54Z
date_updated: 2026-02-25T13:51:50Z
department:
- _id: '100'
doi: 10.1007/s10623-024-01471-1
intvolume: ' 93'
language:
- iso: eng
page: 971 - 981
publication: Des. Codes Cryptogr.
publication_status: published
status: public
title: Nontrivial $t$-designs in polar spaces exist for all $t$
type: journal_article
user_id: '70420'
volume: 93
year: '2025'
...
---
_id: '64292'
author:
- first_name: M.
full_name: Lindemann, M.
last_name: Lindemann
- first_name: M.
full_name: D’Alessandro, M.
last_name: D’Alessandro
- first_name: N.
full_name: Ledentsov, N.
last_name: Ledentsov
- first_name: O. Y.
full_name: Makarov, O. Y.
last_name: Makarov
- first_name: N. N.
full_name: Ledentsov, N. N.
last_name: Ledentsov
- first_name: A.
full_name: Tibaldi, A.
last_name: Tibaldi
- first_name: N. C.
full_name: Gerhardt, N. C.
last_name: Gerhardt
- first_name: M. R.
full_name: Hofmann, M. R.
last_name: Hofmann
citation:
ama: Lindemann M, D’Alessandro M, Ledentsov N, et al. Laterally coupled vertical-cavity
surface-emitting lasers with tunable resonance width and frequency. Journal
of Applied Physics. 2025;138(5). doi:10.1063/5.0275622
apa: Lindemann, M., D’Alessandro, M., Ledentsov, N., Makarov, O. Y., Ledentsov,
N. N., Tibaldi, A., Gerhardt, N. C., & Hofmann, M. R. (2025). Laterally coupled
vertical-cavity surface-emitting lasers with tunable resonance width and frequency.
Journal of Applied Physics, 138(5). https://doi.org/10.1063/5.0275622
bibtex: '@article{Lindemann_D’Alessandro_Ledentsov_Makarov_Ledentsov_Tibaldi_Gerhardt_Hofmann_2025,
title={Laterally coupled vertical-cavity surface-emitting lasers with tunable
resonance width and frequency}, volume={138}, DOI={10.1063/5.0275622},
number={5}, journal={Journal of Applied Physics}, publisher={AIP Publishing},
author={Lindemann, M. and D’Alessandro, M. and Ledentsov, N. and Makarov, O. Y.
and Ledentsov, N. N. and Tibaldi, A. and Gerhardt, N. C. and Hofmann, M. R.},
year={2025} }'
chicago: Lindemann, M., M. D’Alessandro, N. Ledentsov, O. Y. Makarov, N. N. Ledentsov,
A. Tibaldi, N. C. Gerhardt, and M. R. Hofmann. “Laterally Coupled Vertical-Cavity
Surface-Emitting Lasers with Tunable Resonance Width and Frequency.” Journal
of Applied Physics 138, no. 5 (2025). https://doi.org/10.1063/5.0275622.
ieee: 'M. Lindemann et al., “Laterally coupled vertical-cavity surface-emitting
lasers with tunable resonance width and frequency,” Journal of Applied Physics,
vol. 138, no. 5, 2025, doi: 10.1063/5.0275622.'
mla: Lindemann, M., et al. “Laterally Coupled Vertical-Cavity Surface-Emitting Lasers
with Tunable Resonance Width and Frequency.” Journal of Applied Physics,
vol. 138, no. 5, AIP Publishing, 2025, doi:10.1063/5.0275622.
short: M. Lindemann, M. D’Alessandro, N. Ledentsov, O.Y. Makarov, N.N. Ledentsov,
A. Tibaldi, N.C. Gerhardt, M.R. Hofmann, Journal of Applied Physics 138 (2025).
date_created: 2026-02-20T10:03:50Z
date_updated: 2026-02-25T13:59:32Z
department:
- _id: '977'
doi: 10.1063/5.0275622
intvolume: ' 138'
issue: '5'
publication: Journal of Applied Physics
publication_identifier:
issn:
- 1089-7550
publisher: AIP Publishing
status: public
title: Laterally coupled vertical-cavity surface-emitting lasers with tunable resonance
width and frequency
type: journal_article
user_id: '15911'
volume: 138
year: '2025'
...
---
_id: '61918'
author:
- first_name: Jeroen
full_name: Rook, Jeroen
id: '102977'
last_name: Rook
- first_name: Quentin
full_name: Renau, Quentin
last_name: Renau
- first_name: Heike
full_name: Trautmann, Heike
id: '100740'
last_name: Trautmann
orcid: 0000-0002-9788-8282
- first_name: Emma
full_name: Hart, Emma
last_name: Hart
citation:
ama: 'Rook J, Renau Q, Trautmann H, Hart E. Efficient Online Automated Algorithm
Selection in the Face of Data-Drift in Optimisation Problem Instances. In: Proceedings
of the 18th ACM/SIGEVO Conference on Foundations of Genetic Algorithms, FOGA 2025,
Leiden, The Netherlands, August 27-29, 2025. ACM; 2025:262–272. doi:10.1145/3729878.3746615'
apa: Rook, J., Renau, Q., Trautmann, H., & Hart, E. (2025). Efficient Online
Automated Algorithm Selection in the Face of Data-Drift in Optimisation Problem
Instances. Proceedings of the 18th ACM/SIGEVO Conference on Foundations of
Genetic Algorithms, FOGA 2025, Leiden, The Netherlands, August 27-29, 2025,
262–272. https://doi.org/10.1145/3729878.3746615
bibtex: '@inproceedings{Rook_Renau_Trautmann_Hart_2025, title={Efficient Online
Automated Algorithm Selection in the Face of Data-Drift in Optimisation Problem
Instances}, DOI={10.1145/3729878.3746615},
booktitle={Proceedings of the 18th ACM/SIGEVO Conference on Foundations of Genetic
Algorithms, FOGA 2025, Leiden, The Netherlands, August 27-29, 2025}, publisher={ACM},
author={Rook, Jeroen and Renau, Quentin and Trautmann, Heike and Hart, Emma},
year={2025}, pages={262–272} }'
chicago: Rook, Jeroen, Quentin Renau, Heike Trautmann, and Emma Hart. “Efficient
Online Automated Algorithm Selection in the Face of Data-Drift in Optimisation
Problem Instances.” In Proceedings of the 18th ACM/SIGEVO Conference on Foundations
of Genetic Algorithms, FOGA 2025, Leiden, The Netherlands, August 27-29, 2025,
262–272. ACM, 2025. https://doi.org/10.1145/3729878.3746615.
ieee: 'J. Rook, Q. Renau, H. Trautmann, and E. Hart, “Efficient Online Automated
Algorithm Selection in the Face of Data-Drift in Optimisation Problem Instances,”
in Proceedings of the 18th ACM/SIGEVO Conference on Foundations of Genetic
Algorithms, FOGA 2025, Leiden, The Netherlands, August 27-29, 2025, 2025,
pp. 262–272, doi: 10.1145/3729878.3746615.'
mla: Rook, Jeroen, et al. “Efficient Online Automated Algorithm Selection in the
Face of Data-Drift in Optimisation Problem Instances.” Proceedings of the 18th
ACM/SIGEVO Conference on Foundations of Genetic Algorithms, FOGA 2025, Leiden,
The Netherlands, August 27-29, 2025, ACM, 2025, pp. 262–272, doi:10.1145/3729878.3746615.
short: 'J. Rook, Q. Renau, H. Trautmann, E. Hart, in: Proceedings of the 18th ACM/SIGEVO
Conference on Foundations of Genetic Algorithms, FOGA 2025, Leiden, The Netherlands,
August 27-29, 2025, ACM, 2025, pp. 262–272.'
date_created: 2025-10-22T07:26:45Z
date_updated: 2026-02-25T14:31:18Z
department:
- _id: '819'
doi: 10.1145/3729878.3746615
language:
- iso: eng
page: 262–272
publication: Proceedings of the 18th ACM/SIGEVO Conference on Foundations of Genetic
Algorithms, FOGA 2025, Leiden, The Netherlands, August 27-29, 2025
publisher: ACM
status: public
title: Efficient Online Automated Algorithm Selection in the Face of Data-Drift in
Optimisation Problem Instances
type: conference
user_id: '15504'
year: '2025'
...
---
_id: '64658'
author:
- first_name: Moritz
full_name: Neukötter, Moritz
id: '45530'
last_name: Neukötter
orcid: 0000-0001-9101-8828
- first_name: Steffen
full_name: Jesinghausen, Steffen
id: '3959'
last_name: Jesinghausen
orcid: https://orcid.org/0000-0003-2611-5298
- first_name: Hans-Joachim
full_name: Schmid, Hans-Joachim
id: '464'
last_name: Schmid
orcid: 000-0001-8590-1921
citation:
ama: 'Neukötter M, Jesinghausen S, Schmid H-J. Die Möglichkeiten der Filament Extension
Atomization . In: ; 2025.'
apa: Neukötter, M., Jesinghausen, S., & Schmid, H.-J. (2025). Die Möglichkeiten
der Filament Extension Atomization . Jahrestreffen DECHEMA/VDI-Fachgruppe
Mehrphasenströmung, Hamburg.
bibtex: '@inproceedings{Neukötter_Jesinghausen_Schmid_2025, title={Die Möglichkeiten
der Filament Extension Atomization }, author={Neukötter, Moritz and Jesinghausen,
Steffen and Schmid, Hans-Joachim}, year={2025} }'
chicago: Neukötter, Moritz, Steffen Jesinghausen, and Hans-Joachim Schmid. “Die
Möglichkeiten Der Filament Extension Atomization ,” 2025.
ieee: M. Neukötter, S. Jesinghausen, and H.-J. Schmid, “Die Möglichkeiten der Filament
Extension Atomization ,” presented at the Jahrestreffen DECHEMA/VDI-Fachgruppe
Mehrphasenströmung, Hamburg, 2025.
mla: Neukötter, Moritz, et al. Die Möglichkeiten Der Filament Extension Atomization
. 2025.
short: 'M. Neukötter, S. Jesinghausen, H.-J. Schmid, in: 2025.'
conference:
end_date: 2025-03-21
location: Hamburg
name: Jahrestreffen DECHEMA/VDI-Fachgruppe Mehrphasenströmung
start_date: 2025-03-19
date_created: 2026-02-26T09:00:10Z
date_updated: 2026-02-26T09:05:06Z
department:
- _id: '9'
- _id: '150'
language:
- iso: eng
status: public
title: 'Die Möglichkeiten der Filament Extension Atomization '
type: conference_abstract
user_id: '45530'
year: '2025'
...
---
_id: '64659'
author:
- first_name: Moritz
full_name: Neukötter, Moritz
id: '45530'
last_name: Neukötter
orcid: 0000-0001-9101-8828
- first_name: Steffen
full_name: Jesinghausen, Steffen
id: '3959'
last_name: Jesinghausen
orcid: https://orcid.org/0000-0003-2611-5298
- first_name: Hans-Joachim
full_name: Schmid, Hans-Joachim
id: '464'
last_name: Schmid
orcid: 000-0001-8590-1921
citation:
ama: 'Neukötter M, Jesinghausen S, Schmid H-J. Flow around Particles in Uniaxially
Elongated Capillary Bridges. In: ; 2025.'
apa: Neukötter, M., Jesinghausen, S., & Schmid, H.-J. (2025). Flow around
Particles in Uniaxially Elongated Capillary Bridges. DRG Symposium & Nordic
Rheology Conference, Berlin.
bibtex: '@inproceedings{Neukötter_Jesinghausen_Schmid_2025, title={Flow around Particles
in Uniaxially Elongated Capillary Bridges}, author={Neukötter, Moritz and Jesinghausen,
Steffen and Schmid, Hans-Joachim}, year={2025} }'
chicago: Neukötter, Moritz, Steffen Jesinghausen, and Hans-Joachim Schmid. “Flow
around Particles in Uniaxially Elongated Capillary Bridges,” 2025.
ieee: M. Neukötter, S. Jesinghausen, and H.-J. Schmid, “Flow around Particles in
Uniaxially Elongated Capillary Bridges,” presented at the DRG Symposium &
Nordic Rheology Conference, Berlin, 2025.
mla: Neukötter, Moritz, et al. Flow around Particles in Uniaxially Elongated
Capillary Bridges. 2025.
short: 'M. Neukötter, S. Jesinghausen, H.-J. Schmid, in: 2025.'
conference:
end_date: 2025-06-12
location: Berlin
name: DRG Symposium & Nordic Rheology Conference
start_date: 2025-06-10
date_created: 2026-02-26T09:03:07Z
date_updated: 2026-02-26T09:05:00Z
department:
- _id: '9'
- _id: '150'
language:
- iso: eng
status: public
title: Flow around Particles in Uniaxially Elongated Capillary Bridges
type: conference_abstract
user_id: '45530'
year: '2025'
...
---
_id: '64657'
author:
- first_name: 'Julian '
full_name: 'Neudorf, Julian '
last_name: Neudorf
- first_name: Moritz
full_name: Neukötter, Moritz
id: '45530'
last_name: Neukötter
orcid: 0000-0001-9101-8828
citation:
ama: Neudorf J, Neukötter M. Fließverhalten von unterschiedlichen Fluiden im
Filament Extension Atomizer.; 2025.
apa: Neudorf, J., & Neukötter, M. (2025). Fließverhalten von unterschiedlichen
Fluiden im Filament Extension Atomizer.
bibtex: '@book{Neudorf_Neukötter_2025, title={Fließverhalten von unterschiedlichen
Fluiden im Filament Extension Atomizer}, author={Neudorf, Julian and Neukötter,
Moritz}, year={2025} }'
chicago: Neudorf, Julian , and Moritz Neukötter. Fließverhalten von unterschiedlichen
Fluiden im Filament Extension Atomizer, 2025.
ieee: J. Neudorf and M. Neukötter, Fließverhalten von unterschiedlichen Fluiden
im Filament Extension Atomizer. 2025.
mla: Neudorf, Julian, and Moritz Neukötter. Fließverhalten von unterschiedlichen
Fluiden im Filament Extension Atomizer. 2025.
short: J. Neudorf, M. Neukötter, Fließverhalten von unterschiedlichen Fluiden im
Filament Extension Atomizer, 2025.
date_created: 2026-02-26T08:48:05Z
date_updated: 2026-02-26T08:48:33Z
department:
- _id: '9'
- _id: '150'
language:
- iso: ger
status: public
supervisor:
- first_name: Moritz
full_name: Neukötter, Moritz
id: '45530'
last_name: Neukötter
orcid: 0000-0001-9101-8828
- first_name: Steffen
full_name: Jesinghausen, Steffen
id: '3959'
last_name: Jesinghausen
orcid: https://orcid.org/0000-0003-2611-5298
- first_name: Hans-Joachim
full_name: Schmid, Hans-Joachim
id: '464'
last_name: Schmid
orcid: 000-0001-8590-1921
title: Fließverhalten von unterschiedlichen Fluiden im Filament Extension Atomizer
type: bachelorsthesis
user_id: '45530'
year: '2025'
...
---
_id: '64662'
abstract:
- lang: eng
text: "\r\n In this study, we investigate the impact
of chromium-induced point defects on the nonlinear optical properties and electric-field-induced
second harmonic generation (EFISH) in rutile titanium dioxide (TiO\r\n 2\r\n
\ ). Chromium thin films were deposited by electron beam evaporation
on (001)-oriented bulk TiO\r\n 2\r\n substrates
and subsequently diffused into the lattice in a tube furnace under a nitrogen
atmosphere at 900 °C. The introduction of chromium significantly enhanced the
third harmonic generation (THG) of a 1560 nm laser, with an amplification factor
of up to 8.3, indicative of an enhanced third-order nonlinear susceptibility,\r\n
\ χ\r\n (3)\r\n
\ . Moreover, the application of an external voltage induced
a pronounced EFISH signal in the chromium-doped samples, further confirming the
enhanced nonlinear response. These results demonstrate that defect engineering
via chromium doping in rutile TiO\r\n 2\r\n
\ offers a promising pathway for the development of high-performance
nonlinear optical devices.\r\n "
article_number: '54320'
author:
- first_name: Marius
full_name: Brinkmann, Marius
last_name: Brinkmann
- first_name: Falco
full_name: Meier, Falco
last_name: Meier
- first_name: Vladimir
full_name: Spedt, Vladimir
last_name: Spedt
- first_name: Cedrik
full_name: Meier, Cedrik
id: '20798'
last_name: Meier
orcid: https://orcid.org/0000-0002-3787-3572
citation:
ama: Brinkmann M, Meier F, Spedt V, Meier C. Boosting third-order nonlinearities
in rutile TiO2 by chromium doping. Optics Express. 2025;33(26).
doi:10.1364/oe.572063
apa: Brinkmann, M., Meier, F., Spedt, V., & Meier, C. (2025). Boosting third-order
nonlinearities in rutile TiO2 by chromium doping. Optics Express,
33(26), Article 54320. https://doi.org/10.1364/oe.572063
bibtex: '@article{Brinkmann_Meier_Spedt_Meier_2025, title={Boosting third-order
nonlinearities in rutile TiO2 by chromium doping}, volume={33}, DOI={10.1364/oe.572063}, number={2654320},
journal={Optics Express}, publisher={Optica Publishing Group}, author={Brinkmann,
Marius and Meier, Falco and Spedt, Vladimir and Meier, Cedrik}, year={2025} }'
chicago: Brinkmann, Marius, Falco Meier, Vladimir Spedt, and Cedrik Meier. “Boosting
Third-Order Nonlinearities in Rutile TiO2 by Chromium Doping.” Optics
Express 33, no. 26 (2025). https://doi.org/10.1364/oe.572063.
ieee: 'M. Brinkmann, F. Meier, V. Spedt, and C. Meier, “Boosting third-order nonlinearities
in rutile TiO2 by chromium doping,” Optics Express, vol. 33,
no. 26, Art. no. 54320, 2025, doi: 10.1364/oe.572063.'
mla: Brinkmann, Marius, et al. “Boosting Third-Order Nonlinearities in Rutile TiO2
by Chromium Doping.” Optics Express, vol. 33, no. 26, 54320, Optica Publishing
Group, 2025, doi:10.1364/oe.572063.
short: M. Brinkmann, F. Meier, V. Spedt, C. Meier, Optics Express 33 (2025).
date_created: 2026-02-26T09:43:53Z
date_updated: 2026-02-26T09:44:49Z
department:
- _id: '15'
doi: 10.1364/oe.572063
intvolume: ' 33'
issue: '26'
language:
- iso: eng
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: Boosting third-order nonlinearities in rutile TiO2 by chromium doping
type: journal_article
user_id: '20798'
volume: 33
year: '2025'
...
---
_id: '64720'
author:
- first_name: Carsten
full_name: Schulte, Carsten
last_name: Schulte
- first_name: Sue
full_name: Sentance, Sue
last_name: Sentance
- first_name: Sören
full_name: Sparmann, Sören
last_name: Sparmann
- first_name: Rukiye
full_name: Altin, Rukiye
last_name: Altin
- first_name: Mor
full_name: Friebroon-Yesharim, Mor
last_name: Friebroon-Yesharim
- first_name: Martina
full_name: Landman, Martina
last_name: Landman
- first_name: Michael T.
full_name: Rücker, Michael T.
last_name: Rücker
- first_name: Spruha
full_name: Satavlekar, Spruha
last_name: Satavlekar
- first_name: Angela
full_name: Siegel, Angela
last_name: Siegel
- first_name: Matti
full_name: Tedre, Matti
last_name: Tedre
- first_name: Laura
full_name: Tubino, Laura
last_name: Tubino
- first_name: Henriikka
full_name: Vartiainen, Henriikka
last_name: Vartiainen
- first_name: J. Ángel
full_name: VelÁzquez-Iturbide, J. Ángel
last_name: VelÁzquez-Iturbide
- first_name: Jane
full_name: Waite, Jane
last_name: Waite
- first_name: Zihan
full_name: Wu, Zihan
last_name: Wu
citation:
ama: 'Schulte C, Sentance S, Sparmann S, et al. What We Talk About When We Talk
About K-12 Computing Education. In: 2024 Working Group Reports on Innovation
and Technology in Computer Science Education. ACM; 2025. doi:10.1145/3689187.3709612'
apa: Schulte, C., Sentance, S., Sparmann, S., Altin, R., Friebroon-Yesharim, M.,
Landman, M., Rücker, M. T., Satavlekar, S., Siegel, A., Tedre, M., Tubino, L.,
Vartiainen, H., VelÁzquez-Iturbide, J. Á., Waite, J., & Wu, Z. (2025). What
We Talk About When We Talk About K-12 Computing Education. 2024 Working Group
Reports on Innovation and Technology in Computer Science Education. https://doi.org/10.1145/3689187.3709612
bibtex: '@inproceedings{Schulte_Sentance_Sparmann_Altin_Friebroon-Yesharim_Landman_Rücker_Satavlekar_Siegel_Tedre_et
al._2025, title={What We Talk About When We Talk About K-12 Computing Education},
DOI={10.1145/3689187.3709612},
booktitle={2024 Working Group Reports on Innovation and Technology in Computer
Science Education}, publisher={ACM}, author={Schulte, Carsten and Sentance, Sue
and Sparmann, Sören and Altin, Rukiye and Friebroon-Yesharim, Mor and Landman,
Martina and Rücker, Michael T. and Satavlekar, Spruha and Siegel, Angela and Tedre,
Matti and et al.}, year={2025} }'
chicago: Schulte, Carsten, Sue Sentance, Sören Sparmann, Rukiye Altin, Mor Friebroon-Yesharim,
Martina Landman, Michael T. Rücker, et al. “What We Talk About When We Talk About
K-12 Computing Education.” In 2024 Working Group Reports on Innovation and
Technology in Computer Science Education. ACM, 2025. https://doi.org/10.1145/3689187.3709612.
ieee: 'C. Schulte et al., “What We Talk About When We Talk About K-12 Computing
Education,” 2025, doi: 10.1145/3689187.3709612.'
mla: Schulte, Carsten, et al. “What We Talk About When We Talk About K-12 Computing
Education.” 2024 Working Group Reports on Innovation and Technology in Computer
Science Education, ACM, 2025, doi:10.1145/3689187.3709612.
short: 'C. Schulte, S. Sentance, S. Sparmann, R. Altin, M. Friebroon-Yesharim, M.
Landman, M.T. Rücker, S. Satavlekar, A. Siegel, M. Tedre, L. Tubino, H. Vartiainen,
J.Á. VelÁzquez-Iturbide, J. Waite, Z. Wu, in: 2024 Working Group Reports on Innovation
and Technology in Computer Science Education, ACM, 2025.'
date_created: 2026-02-26T13:00:09Z
date_updated: 2026-02-26T13:02:43Z
doi: 10.1145/3689187.3709612
publication: 2024 Working Group Reports on Innovation and Technology in Computer Science
Education
publication_status: published
publisher: ACM
status: public
title: What We Talk About When We Talk About K-12 Computing Education
type: conference
user_id: '63216'
year: '2025'
...
---
_id: '64719'
author:
- first_name: Sören
full_name: Sparmann, Sören
last_name: Sparmann
- first_name: Rukiye
full_name: Altin, Rukiye
last_name: Altin
- first_name: Andreas
full_name: Mühling, Andreas
last_name: Mühling
- first_name: Carsten
full_name: Schulte, Carsten
last_name: Schulte
citation:
ama: 'Sparmann S, Altin R, Mühling A, Schulte C. Surfacing Educational Traditions
in European K–12 Computing Curricula: A Large-Scale NLP-Based Comparison. In:
Proceedings of the 25th Koli Calling International Conference on Computing
Education Research. ACM; 2025. doi:10.1145/3769994.3770014'
apa: 'Sparmann, S., Altin, R., Mühling, A., & Schulte, C. (2025). Surfacing
Educational Traditions in European K–12 Computing Curricula: A Large-Scale NLP-Based
Comparison. Proceedings of the 25th Koli Calling International Conference on
Computing Education Research. https://doi.org/10.1145/3769994.3770014'
bibtex: '@inproceedings{Sparmann_Altin_Mühling_Schulte_2025, title={Surfacing Educational
Traditions in European K–12 Computing Curricula: A Large-Scale NLP-Based Comparison},
DOI={10.1145/3769994.3770014},
booktitle={Proceedings of the 25th Koli Calling International Conference on Computing
Education Research}, publisher={ACM}, author={Sparmann, Sören and Altin, Rukiye
and Mühling, Andreas and Schulte, Carsten}, year={2025} }'
chicago: 'Sparmann, Sören, Rukiye Altin, Andreas Mühling, and Carsten Schulte. “Surfacing
Educational Traditions in European K–12 Computing Curricula: A Large-Scale NLP-Based
Comparison.” In Proceedings of the 25th Koli Calling International Conference
on Computing Education Research. ACM, 2025. https://doi.org/10.1145/3769994.3770014.'
ieee: 'S. Sparmann, R. Altin, A. Mühling, and C. Schulte, “Surfacing Educational
Traditions in European K–12 Computing Curricula: A Large-Scale NLP-Based Comparison,”
2025, doi: 10.1145/3769994.3770014.'
mla: 'Sparmann, Sören, et al. “Surfacing Educational Traditions in European K–12
Computing Curricula: A Large-Scale NLP-Based Comparison.” Proceedings of the
25th Koli Calling International Conference on Computing Education Research,
ACM, 2025, doi:10.1145/3769994.3770014.'
short: 'S. Sparmann, R. Altin, A. Mühling, C. Schulte, in: Proceedings of the 25th
Koli Calling International Conference on Computing Education Research, ACM, 2025.'
date_created: 2026-02-26T12:59:47Z
date_updated: 2026-02-26T13:02:37Z
doi: 10.1145/3769994.3770014
publication: Proceedings of the 25th Koli Calling International Conference on Computing
Education Research
publication_status: published
publisher: ACM
status: public
title: 'Surfacing Educational Traditions in European K–12 Computing Curricula: A Large-Scale
NLP-Based Comparison'
type: conference
user_id: '63216'
year: '2025'
...
---
_id: '59258'
article_number: '44'
author:
- first_name: Michael
full_name: Winkler, Michael
id: '31496'
last_name: Winkler
citation:
ama: Winkler M. Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity
with Temperature-Dependent Parameters. Applied Mathematics & Optimization.
2025;91(2). doi:10.1007/s00245-025-10243-9
apa: Winkler, M. (2025). Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity
with Temperature-Dependent Parameters. Applied Mathematics & Optimization,
91(2), Article 44. https://doi.org/10.1007/s00245-025-10243-9
bibtex: '@article{Winkler_2025, title={Rough Data in an Evolution System Generalizing
1D Thermoviscoelasticity with Temperature-Dependent Parameters}, volume={91},
DOI={10.1007/s00245-025-10243-9},
number={244}, journal={Applied Mathematics & Optimization}, publisher={Springer
Science and Business Media LLC}, author={Winkler, Michael}, year={2025} }'
chicago: Winkler, Michael. “Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity
with Temperature-Dependent Parameters.” Applied Mathematics & Optimization
91, no. 2 (2025). https://doi.org/10.1007/s00245-025-10243-9.
ieee: 'M. Winkler, “Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity
with Temperature-Dependent Parameters,” Applied Mathematics & Optimization,
vol. 91, no. 2, Art. no. 44, 2025, doi: 10.1007/s00245-025-10243-9.'
mla: Winkler, Michael. “Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity
with Temperature-Dependent Parameters.” Applied Mathematics & Optimization,
vol. 91, no. 2, 44, Springer Science and Business Media LLC, 2025, doi:10.1007/s00245-025-10243-9.
short: M. Winkler, Applied Mathematics & Optimization 91 (2025).
date_created: 2025-04-02T11:23:25Z
date_updated: 2026-02-26T15:59:30Z
department:
- _id: '90'
doi: 10.1007/s00245-025-10243-9
intvolume: ' 91'
issue: '2'
language:
- iso: eng
project:
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
publication: Applied Mathematics & Optimization
publication_identifier:
issn:
- 0095-4616
- 1432-0606
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity with
Temperature-Dependent Parameters
type: journal_article
user_id: '11829'
volume: 91
year: '2025'
...
---
_id: '64736'
citation:
ama: Frahm J, Glöckner H, Hilgert J, Olafsson G, eds. Special Issue of Journal
of Lie Theory Dedicated to Karl-Hermann Neeb on the Occasion of His 60th Birthday.
Vol 35.; 2025.
apa: Special issue of Journal of Lie Theory dedicated to Karl-Hermann Neeb on the
occasion of his 60th birthday. (2025). In J. Frahm, H. Glöckner, J. Hilgert, &
G. Olafsson (Eds.), J. Lie Theory (Vol. 35, Issue 4).
bibtex: '@book{Frahm_Glöckner_Hilgert_Olafsson_2025, title={Special issue of Journal
of Lie Theory dedicated to Karl-Hermann Neeb on the occasion of his 60th birthday},
volume={35}, number={4}, journal={J. Lie Theory}, year={2025} }'
chicago: Frahm, Jan, Helge Glöckner, Joachim Hilgert, and Gestur Olafsson, eds.
Special Issue of Journal of Lie Theory Dedicated to Karl-Hermann Neeb on the
Occasion of His 60th Birthday. J. Lie Theory. Vol. 35, 2025.
ieee: J. Frahm, H. Glöckner, J. Hilgert, and G. Olafsson, Eds., Special issue
of Journal of Lie Theory dedicated to Karl-Hermann Neeb on the occasion of his
60th birthday, vol. 35, no. 4. 2025.
mla: Frahm, Jan, et al., editors. “Special Issue of Journal of Lie Theory Dedicated
to Karl-Hermann Neeb on the Occasion of His 60th Birthday.” J. Lie Theory,
vol. 35, no. 4, 2025.
short: J. Frahm, H. Glöckner, J. Hilgert, G. Olafsson, eds., Special Issue of Journal
of Lie Theory Dedicated to Karl-Hermann Neeb on the Occasion of His 60th Birthday,
2025.
date_created: 2026-02-26T17:42:01Z
date_updated: 2026-02-26T17:51:43Z
department:
- _id: '10'
- _id: '87'
- _id: '93'
editor:
- first_name: Jan
full_name: Frahm, Jan
last_name: Frahm
- first_name: Helge
full_name: Glöckner, Helge
id: '178'
last_name: Glöckner
- first_name: Joachim
full_name: Hilgert, Joachim
id: '220'
last_name: Hilgert
- first_name: Gestur
full_name: Olafsson, Gestur
last_name: Olafsson
intvolume: ' 35'
issue: '4'
language:
- iso: eng
publication: J. Lie Theory
quality_controlled: '1'
status: public
title: Special issue of Journal of Lie Theory dedicated to Karl-Hermann Neeb on the
occasion of his 60th birthday
type: journal_editor
user_id: '178'
volume: 35
year: '2025'
...
---
_id: '62079'
abstract:
- lang: eng
text: This paper investigates two modeling approaches for the simulation of the
deformation and decomposition behavior of preconsolidated rovings above the thermoplastic
matrix{\textquoteright} melting temperature. This is crucial for capturing the
local material structure after processes introducing highly localized deformation
such as mechanical joining processes between metal and fiber reinforced thermoplastics
(FRTP). A generic finite element (FE) model is developed, incorporating interfaces
discretized through either cohesive zone (CZ) elements or Coulomb friction-based
contacts. The material parameters for the FE elements are derived from the initial
stiffness of a statistical volume element (SVE) at micro scale modelled with an
Arbitrary-Lagrange-Eulerian method for three load cases. The CZ properties calculated
are based on the shear viscosity of the composite. The CZ and contact modelling
approaches are evaluated using three load cases of the SVE, comparing force-displacement
curves. Under simple loading conditions, such as normal pressure tension and bending,
both methods produce similar results; however, in complex load cases, the CZ approach
shows clear advantages in handling interface interactions and shows robust simulations.
The CZ approach thus presents a promising method for simulating roving decomposition
in FRTP-metal joining applications above the matrix{\textquoteright} melting temperature.
author:
- first_name: Benjamin
full_name: Gröger, Benjamin
last_name: Gröger
- first_name: Johannes
full_name: Gerritzen, Johannes
id: '105344'
last_name: Gerritzen
orcid: 0000-0002-0169-8602
- first_name: Andreas
full_name: Hornig, Andreas
last_name: Hornig
- first_name: Maik
full_name: Gude, Maik
last_name: Gude
citation:
ama: 'Gröger B, Gerritzen J, Hornig A, Gude M. Modeling approaches for the decomposition
behavior of preconsolidated rovings throughout local deformation processes. In:
Meschut G, Bobbert M, Duflou J, et al., eds. Sheet Metal 2025. Materials
Research Proceedings. Materials Research Forum LLC, Materials Research Foundations;
2025:268–275. doi:10.21741/9781644903551-33'
apa: Gröger, B., Gerritzen, J., Hornig, A., & Gude, M. (2025). Modeling approaches
for the decomposition behavior of preconsolidated rovings throughout local deformation
processes. In G. Meschut, M. Bobbert, J. Duflou, L. Fratini, H. Hagenah, P. Martins,
M. Merklein, & F. Micari (Eds.), Sheet Metal 2025 (pp. 268–275). Materials
Research Forum LLC, Materials Research Foundations. https://doi.org/10.21741/9781644903551-33
bibtex: '@inproceedings{Gröger_Gerritzen_Hornig_Gude_2025, series={Materials Research
Proceedings}, title={Modeling approaches for the decomposition behavior of preconsolidated
rovings throughout local deformation processes}, DOI={10.21741/9781644903551-33},
booktitle={Sheet Metal 2025}, publisher={Materials Research Forum LLC, Materials
Research Foundations}, author={Gröger, Benjamin and Gerritzen, Johannes and Hornig,
Andreas and Gude, Maik}, editor={Meschut, G. and Bobbert, M. and Duflou, J. and
Fratini, L. and Hagenah, H. and Martins, P. and Merklein, M. and Micari, F.},
year={2025}, pages={268–275}, collection={Materials Research Proceedings} }'
chicago: Gröger, Benjamin, Johannes Gerritzen, Andreas Hornig, and Maik Gude. “Modeling
Approaches for the Decomposition Behavior of Preconsolidated Rovings throughout
Local Deformation Processes.” In Sheet Metal 2025, edited by G. Meschut,
M. Bobbert, J. Duflou, L. Fratini, H. Hagenah, P. Martins, M. Merklein, and F.
Micari, 268–275. Materials Research Proceedings. Materials Research Forum LLC,
Materials Research Foundations, 2025. https://doi.org/10.21741/9781644903551-33.
ieee: 'B. Gröger, J. Gerritzen, A. Hornig, and M. Gude, “Modeling approaches for
the decomposition behavior of preconsolidated rovings throughout local deformation
processes,” in Sheet Metal 2025, 2025, pp. 268–275, doi: 10.21741/9781644903551-33.'
mla: Gröger, Benjamin, et al. “Modeling Approaches for the Decomposition Behavior
of Preconsolidated Rovings throughout Local Deformation Processes.” Sheet Metal
2025, edited by G. Meschut et al., Materials Research Forum LLC, Materials
Research Foundations, 2025, pp. 268–275, doi:10.21741/9781644903551-33.
short: 'B. Gröger, J. Gerritzen, A. Hornig, M. Gude, in: G. Meschut, M. Bobbert,
J. Duflou, L. Fratini, H. Hagenah, P. Martins, M. Merklein, F. Micari (Eds.),
Sheet Metal 2025, Materials Research Forum LLC, Materials Research Foundations,
2025, pp. 268–275.'
date_created: 2025-11-04T12:48:21Z
date_updated: 2026-02-27T06:43:19Z
doi: 10.21741/9781644903551-33
editor:
- first_name: G.
full_name: Meschut, G.
last_name: Meschut
- first_name: M.
full_name: Bobbert, M.
last_name: Bobbert
- first_name: J.
full_name: Duflou, J.
last_name: Duflou
- first_name: L.
full_name: Fratini, L.
last_name: Fratini
- first_name: H.
full_name: Hagenah, H.
last_name: Hagenah
- first_name: P.
full_name: Martins, P.
last_name: Martins
- first_name: M.
full_name: Merklein, M.
last_name: Merklein
- first_name: F.
full_name: Micari, F.
last_name: Micari
keyword:
- Finite Element Method (FEM)
- Process
- Thermoplastic Fiber Reinforced Plastic
language:
- iso: eng
page: 268–275
project:
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '137'
name: TRR 285 - Subproject A03
- _id: '131'
name: TRR 285 - Project Area A
publication: Sheet Metal 2025
publication_identifier:
isbn:
- 978-1-64490-354-4
publisher: Materials Research Forum LLC, Materials Research Foundations
series_title: Materials Research Proceedings
status: public
title: Modeling approaches for the decomposition behavior of preconsolidated rovings
throughout local deformation processes
type: conference
user_id: '105344'
year: '2025'
...
---
_id: '62080'
abstract:
- lang: eng
text: The failure behavior of fiber reinforced polymers (FRP) is strongly influenced
by their microstructure, i.e. fiber arrangement or local fiber volume content.
However, this information cannot be directly used for structural analyses, since
it requires a discretization on micrometer level. Therefore, current failure theories
do not directly account for such effects, but describe the behavior averaged over
an entire specimen. This foundation in experimentally accessible loading conditions
leads to purely theory based extension to more complex stress states without direct
validation possibilities. This work aims at leveraging micro-scale simulations
to obtain failure information under arbitrary loading conditions. The results
are propagated to the meso-scale, enabling efficient structural analyses, by means
of machine learning (ML). It is shown that the ML model is capable of correctly
assessing previously unseen stress states and therefore poses an efficient tool
of exploiting information from the micro-scale in larger simulations.
author:
- first_name: Johannes
full_name: Gerritzen, Johannes
id: '105344'
last_name: Gerritzen
orcid: 0000-0002-0169-8602
- first_name: Andreas
full_name: Hornig, Andreas
last_name: Hornig
- first_name: Maik
full_name: Gude, Maik
last_name: Gude
citation:
ama: 'Gerritzen J, Hornig A, Gude M. Efficient failure information propagation under
complex stress states in fiber reinforced polymers: From micro- to meso-scale
using machine learning. In: Meschut G, Bobbert M, Duflou J, et al., eds. Sheet
Metal 2025. Materials Research Proceedings. Materials Research Forum LLC,
Materials Research Foundations; 2025:260–267. doi:10.21741/9781644903551-32'
apa: 'Gerritzen, J., Hornig, A., & Gude, M. (2025). Efficient failure information
propagation under complex stress states in fiber reinforced polymers: From micro-
to meso-scale using machine learning. In G. Meschut, M. Bobbert, J. Duflou, L.
Fratini, H. Hagenah, P. Martins, M. Merklein, & F. Micari (Eds.), Sheet
Metal 2025 (pp. 260–267). Materials Research Forum LLC, Materials Research
Foundations. https://doi.org/10.21741/9781644903551-32'
bibtex: '@inproceedings{Gerritzen_Hornig_Gude_2025, series={Materials Research Proceedings},
title={Efficient failure information propagation under complex stress states in
fiber reinforced polymers: From micro- to meso-scale using machine learning},
DOI={10.21741/9781644903551-32},
booktitle={Sheet Metal 2025}, publisher={Materials Research Forum LLC, Materials
Research Foundations}, author={Gerritzen, Johannes and Hornig, Andreas and Gude,
Maik}, editor={Meschut, G. and Bobbert, M. and Duflou, J. and Fratini, L. and
Hagenah, H. and Martins, P. and Merklein, M. and Micari, F.}, year={2025}, pages={260–267},
collection={Materials Research Proceedings} }'
chicago: 'Gerritzen, Johannes, Andreas Hornig, and Maik Gude. “Efficient Failure
Information Propagation under Complex Stress States in Fiber Reinforced Polymers:
From Micro- to Meso-Scale Using Machine Learning.” In Sheet Metal 2025,
edited by G. Meschut, M. Bobbert, J. Duflou, L. Fratini, H. Hagenah, P. Martins,
M. Merklein, and F. Micari, 260–267. Materials Research Proceedings. Materials
Research Forum LLC, Materials Research Foundations, 2025. https://doi.org/10.21741/9781644903551-32.'
ieee: 'J. Gerritzen, A. Hornig, and M. Gude, “Efficient failure information propagation
under complex stress states in fiber reinforced polymers: From micro- to meso-scale
using machine learning,” in Sheet Metal 2025, 2025, pp. 260–267, doi: 10.21741/9781644903551-32.'
mla: 'Gerritzen, Johannes, et al. “Efficient Failure Information Propagation under
Complex Stress States in Fiber Reinforced Polymers: From Micro- to Meso-Scale
Using Machine Learning.” Sheet Metal 2025, edited by G. Meschut et al.,
Materials Research Forum LLC, Materials Research Foundations, 2025, pp. 260–267,
doi:10.21741/9781644903551-32.'
short: 'J. Gerritzen, A. Hornig, M. Gude, in: G. Meschut, M. Bobbert, J. Duflou,
L. Fratini, H. Hagenah, P. Martins, M. Merklein, F. Micari (Eds.), Sheet Metal
2025, Materials Research Forum LLC, Materials Research Foundations, 2025, pp.
260–267.'
date_created: 2025-11-04T12:48:37Z
date_updated: 2026-02-27T06:43:37Z
doi: 10.21741/9781644903551-32
editor:
- first_name: G.
full_name: Meschut, G.
last_name: Meschut
- first_name: M.
full_name: Bobbert, M.
last_name: Bobbert
- first_name: J.
full_name: Duflou, J.
last_name: Duflou
- first_name: L.
full_name: Fratini, L.
last_name: Fratini
- first_name: H.
full_name: Hagenah, H.
last_name: Hagenah
- first_name: P.
full_name: Martins, P.
last_name: Martins
- first_name: M.
full_name: Merklein, M.
last_name: Merklein
- first_name: F.
full_name: Micari, F.
last_name: Micari
keyword:
- Failure
- Fiber Reinforced Plastic
- Machine Learning
language:
- iso: eng
page: 260–267
project:
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '137'
name: TRR 285 - Subproject A03
- _id: '131'
name: TRR 285 - Project Area A
publication: Sheet Metal 2025
publication_identifier:
isbn:
- 978-1-64490-354-4
publisher: Materials Research Forum LLC, Materials Research Foundations
series_title: Materials Research Proceedings
status: public
title: 'Efficient failure information propagation under complex stress states in fiber
reinforced polymers: From micro- to meso-scale using machine learning'
type: conference
user_id: '105344'
year: '2025'
...
---
_id: '62081'
article_number: '114969'
author:
- first_name: Johannes
full_name: Gerritzen, Johannes
id: '105344'
last_name: Gerritzen
orcid: 0000-0002-0169-8602
- first_name: Benjamin
full_name: Gröger, Benjamin
last_name: Gröger
- first_name: Matthias
full_name: Zscheyge, Matthias
last_name: Zscheyge
- first_name: Andreas
full_name: Hornig, Andreas
last_name: Hornig
- first_name: Maik
full_name: Gude, Maik
last_name: Gude
citation:
ama: Gerritzen J, Gröger B, Zscheyge M, Hornig A, Gude M. 3D viscoelastic plastic
model coupled with a continuum damage formulation for fiber reinforced polymers.
Materials & Design. 2025;260. doi:10.1016/j.matdes.2025.114969
apa: Gerritzen, J., Gröger, B., Zscheyge, M., Hornig, A., & Gude, M. (2025).
3D viscoelastic plastic model coupled with a continuum damage formulation for
fiber reinforced polymers. Materials & Design, 260, Article
114969. https://doi.org/10.1016/j.matdes.2025.114969
bibtex: '@article{Gerritzen_Gröger_Zscheyge_Hornig_Gude_2025, title={3D viscoelastic
plastic model coupled with a continuum damage formulation for fiber reinforced
polymers}, volume={260}, DOI={10.1016/j.matdes.2025.114969},
number={114969}, journal={Materials & Design}, publisher={Elsevier BV},
author={Gerritzen, Johannes and Gröger, Benjamin and Zscheyge, Matthias and Hornig,
Andreas and Gude, Maik}, year={2025} }'
chicago: Gerritzen, Johannes, Benjamin Gröger, Matthias Zscheyge, Andreas Hornig,
and Maik Gude. “3D Viscoelastic Plastic Model Coupled with a Continuum Damage
Formulation for Fiber Reinforced Polymers.” Materials & Design
260 (2025). https://doi.org/10.1016/j.matdes.2025.114969.
ieee: 'J. Gerritzen, B. Gröger, M. Zscheyge, A. Hornig, and M. Gude, “3D viscoelastic
plastic model coupled with a continuum damage formulation for fiber reinforced
polymers,” Materials & Design, vol. 260, Art. no. 114969, 2025,
doi: 10.1016/j.matdes.2025.114969.'
mla: Gerritzen, Johannes, et al. “3D Viscoelastic Plastic Model Coupled with a Continuum
Damage Formulation for Fiber Reinforced Polymers.” Materials & Design,
vol. 260, 114969, Elsevier BV, 2025, doi:10.1016/j.matdes.2025.114969.
short: J. Gerritzen, B. Gröger, M. Zscheyge, A. Hornig, M. Gude, Materials &
Design 260 (2025).
date_created: 2025-11-04T12:49:13Z
date_updated: 2026-02-27T06:43:55Z
doi: 10.1016/j.matdes.2025.114969
intvolume: ' 260'
language:
- iso: eng
project:
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '137'
name: TRR 285 - Subproject A03
- _id: '131'
name: TRR 285 - Project Area A
publication: Materials & Design
publication_identifier:
issn:
- 0264-1275
publication_status: published
publisher: Elsevier BV
status: public
title: 3D viscoelastic plastic model coupled with a continuum damage formulation for
fiber reinforced polymers
type: journal_article
user_id: '105344'
volume: 260
year: '2025'
...
---
_id: '64770'
author:
- first_name: Matthieu
full_name: Pinaud, Matthieu
last_name: Pinaud
citation:
ama: Pinaud M. Manifold of Mappings and Regularity Properties of Half-Lie Groups.;
2025. doi:10.17619/UNIPB/1-2211
apa: Pinaud, M. (2025). Manifold of mappings and regularity properties of half-Lie
groups. https://doi.org/10.17619/UNIPB/1-2211
bibtex: '@book{Pinaud_2025, title={Manifold of mappings and regularity properties
of half-Lie groups}, DOI={10.17619/UNIPB/1-2211},
author={Pinaud, Matthieu}, year={2025} }'
chicago: Pinaud, Matthieu. Manifold of Mappings and Regularity Properties of
Half-Lie Groups, 2025. https://doi.org/10.17619/UNIPB/1-2211.
ieee: M. Pinaud, Manifold of mappings and regularity properties of half-Lie groups.
2025.
mla: Pinaud, Matthieu. Manifold of Mappings and Regularity Properties of Half-Lie
Groups. 2025, doi:10.17619/UNIPB/1-2211.
short: M. Pinaud, Manifold of Mappings and Regularity Properties of Half-Lie Groups,
2025.
date_created: 2026-02-26T21:58:22Z
date_updated: 2026-02-26T21:58:36Z
department:
- _id: '10'
- _id: '87'
- _id: '93'
doi: 10.17619/UNIPB/1-2211
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://nbn-resolving.org/urn:nbn:de:hbz:466:2-54221
oa: '1'
status: public
supervisor:
- first_name: Helge
full_name: Glöckner, Helge
id: '178'
last_name: Glöckner
title: Manifold of mappings and regularity properties of half-Lie groups
type: dissertation
user_id: '178'
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: 2026-02-27T06:45:17Z
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: '105344'
year: '2025'
...