---
_id: '55268'
author:
- first_name: Hendrik
full_name: Rose, Hendrik
id: '55958'
last_name: Rose
orcid: 0000-0002-3079-5428
- first_name: Polina R.
full_name: Sharapova, Polina R.
id: '60286'
last_name: Sharapova
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
citation:
ama: 'Rose H, Sharapova PR, Meier T. Microscopic simulations of the dynamics of
excitonic many-body correlations coupled to quantum light. In: Betz M, Elezzabi
AY, eds. Ultrafast Phenomena and Nanophotonics XXVIII. SPIE; 2024. doi:10.1117/12.2690245'
apa: Rose, H., Sharapova, P. R., & Meier, T. (2024). Microscopic simulations
of the dynamics of excitonic many-body correlations coupled to quantum light.
In M. Betz & A. Y. Elezzabi (Eds.), Ultrafast Phenomena and Nanophotonics
XXVIII. SPIE. https://doi.org/10.1117/12.2690245
bibtex: '@inproceedings{Rose_Sharapova_Meier_2024, title={Microscopic simulations
of the dynamics of excitonic many-body correlations coupled to quantum light},
DOI={10.1117/12.2690245}, booktitle={Ultrafast
Phenomena and Nanophotonics XXVIII}, publisher={SPIE}, author={Rose, Hendrik and
Sharapova, Polina R. and Meier, Torsten}, editor={Betz, Markus and Elezzabi, Abdulhakem
Y.}, year={2024} }'
chicago: Rose, Hendrik, Polina R. Sharapova, and Torsten Meier. “Microscopic Simulations
of the Dynamics of Excitonic Many-Body Correlations Coupled to Quantum Light.”
In Ultrafast Phenomena and Nanophotonics XXVIII, edited by Markus Betz
and Abdulhakem Y. Elezzabi. SPIE, 2024. https://doi.org/10.1117/12.2690245.
ieee: 'H. Rose, P. R. Sharapova, and T. Meier, “Microscopic simulations of the dynamics
of excitonic many-body correlations coupled to quantum light,” in Ultrafast
Phenomena and Nanophotonics XXVIII, 2024, doi: 10.1117/12.2690245.'
mla: Rose, Hendrik, et al. “Microscopic Simulations of the Dynamics of Excitonic
Many-Body Correlations Coupled to Quantum Light.” Ultrafast Phenomena and Nanophotonics
XXVIII, edited by Markus Betz and Abdulhakem Y. Elezzabi, SPIE, 2024, doi:10.1117/12.2690245.
short: 'H. Rose, P.R. Sharapova, T. Meier, in: M. Betz, A.Y. Elezzabi (Eds.), Ultrafast
Phenomena and Nanophotonics XXVIII, SPIE, 2024.'
date_created: 2024-07-15T10:26:04Z
date_updated: 2024-08-30T11:59:34Z
department:
- _id: '15'
- _id: '569'
- _id: '170'
- _id: '293'
- _id: '35'
- _id: '230'
- _id: '429'
- _id: '623'
doi: 10.1117/12.2690245
editor:
- first_name: Markus
full_name: Betz, Markus
last_name: Betz
- first_name: Abdulhakem Y.
full_name: Elezzabi, Abdulhakem Y.
last_name: Elezzabi
language:
- iso: eng
project:
- _id: '53'
grant_number: '231447078'
name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden
Konzepten zu funktionellen Strukturen'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '59'
grant_number: '231447078'
name: 'TRR 142 - A02: TRR 142 - Nichtlineare Spektroskopie von Halbleiter-Nanostrukturen
mit Quantenlicht (A02)'
publication: Ultrafast Phenomena and Nanophotonics XXVIII
publication_status: published
publisher: SPIE
status: public
title: Microscopic simulations of the dynamics of excitonic many-body correlations
coupled to quantum light
type: conference
user_id: '16199'
year: '2024'
...
---
_id: '56212'
abstract:
- lang: eng
text: AbstractTo increase the quality of computational
results for heterogeneous materials like fiber‐reinforced composites with Prandtl–Reuss‐type
material laws, goal‐oriented measures of the adaptive finite element method coupled
to model adaptivity is established. The former is an adaptive mesh refinement
on the macroscale, which allows to control the spatial discretization errors.
The latter is an efficient combination of a numerically low cost nonuniform transformation
field analysis (NTFA) and numerically high cost full‐field elasto‐plastic homogenization
methods on the microscale. The present contribution deals with the application
of the concept of downwind and upwind approximations to a goal‐oriented a posteriori
error estimator based on duality techniques by means of reduced order homogenization
schemes like NTFA, and with accuracy and numerical efficiency of the proposed
goal‐oriented adaptive framework. NTFA consists of an offline phase and an online
phase. During the offline phase, some relevant information of the micro system
under consideration is precomputed allowing a reduced set of equations to be solved
in the online phase. Thus, NTFA leads to a quite efficient homogenization method
but less accurate compared to the full‐field homogenization method which is characterized
with a high computational demand for accounting nonlinear microstructural mechanisms.
Due to nonlinearities and time‐dependency of plasticity, the estimation of error
transport and error generation are obtained with a backward‐in‐time dual method
despite a high demand on memory capacity. In this contribution, the dual problem
is solved with a forward‐in‐time dual method that allows estimating the full error
during the resolution of the primal problem without the need for extra memory
capacity. Several numerical examples illustrate the effectiveness of the proposed
adaptive approach based on downwind and upwind approximations.
author:
- first_name: Arnold
full_name: Tchomgue Simeu, Arnold
id: '83075'
last_name: Tchomgue Simeu
- first_name: Rolf
full_name: Mahnken, Rolf
last_name: Mahnken
citation:
ama: Tchomgue Simeu A, Mahnken R. Mesh‐ and model adaptivity for NTFA and full‐field
elasto‐plastic homogenization based on downwind and upwind approximations. PAMM.
Published online 2024. doi:10.1002/pamm.202400074
apa: Tchomgue Simeu, A., & Mahnken, R. (2024). Mesh‐ and model adaptivity for
NTFA and full‐field elasto‐plastic homogenization based on downwind and upwind
approximations. PAMM. https://doi.org/10.1002/pamm.202400074
bibtex: '@article{Tchomgue Simeu_Mahnken_2024, title={Mesh‐ and model adaptivity
for NTFA and full‐field elasto‐plastic homogenization based on downwind and upwind
approximations}, DOI={10.1002/pamm.202400074},
journal={PAMM}, publisher={Wiley}, author={Tchomgue Simeu, Arnold and Mahnken,
Rolf}, year={2024} }'
chicago: Tchomgue Simeu, Arnold, and Rolf Mahnken. “Mesh‐ and Model Adaptivity for
NTFA and Full‐field Elasto‐plastic Homogenization Based on Downwind and Upwind
Approximations.” PAMM, 2024. https://doi.org/10.1002/pamm.202400074.
ieee: 'A. Tchomgue Simeu and R. Mahnken, “Mesh‐ and model adaptivity for NTFA and
full‐field elasto‐plastic homogenization based on downwind and upwind approximations,”
PAMM, 2024, doi: 10.1002/pamm.202400074.'
mla: Tchomgue Simeu, Arnold, and Rolf Mahnken. “Mesh‐ and Model Adaptivity for NTFA
and Full‐field Elasto‐plastic Homogenization Based on Downwind and Upwind Approximations.”
PAMM, Wiley, 2024, doi:10.1002/pamm.202400074.
short: A. Tchomgue Simeu, R. Mahnken, PAMM (2024).
date_created: 2024-09-23T11:23:21Z
date_updated: 2024-09-23T11:26:52Z
department:
- _id: '9'
- _id: '154'
- _id: '321'
doi: 10.1002/pamm.202400074
language:
- iso: eng
publication: PAMM
publication_identifier:
issn:
- 1617-7061
- 1617-7061
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Mesh‐ and model adaptivity for NTFA and full‐field elasto‐plastic homogenization
based on downwind and upwind approximations
type: journal_article
user_id: '85414'
year: '2024'
...
---
_id: '54279'
article_number: '126981'
author:
- first_name: Ayoub
full_name: Hamdoun, Ayoub
id: '57708'
last_name: Hamdoun
- first_name: Rolf
full_name: Mahnken, Rolf
id: '335'
last_name: Mahnken
citation:
ama: Hamdoun A, Mahnken R. Uniaxial and biaxial experimental investigation of glassy
polymers. Polymer. 2024;299. doi:10.1016/j.polymer.2024.126981
apa: Hamdoun, A., & Mahnken, R. (2024). Uniaxial and biaxial experimental investigation
of glassy polymers. Polymer, 299, Article 126981. https://doi.org/10.1016/j.polymer.2024.126981
bibtex: '@article{Hamdoun_Mahnken_2024, title={Uniaxial and biaxial experimental
investigation of glassy polymers}, volume={299}, DOI={10.1016/j.polymer.2024.126981},
number={126981}, journal={Polymer}, publisher={Elsevier BV}, author={Hamdoun,
Ayoub and Mahnken, Rolf}, year={2024} }'
chicago: Hamdoun, Ayoub, and Rolf Mahnken. “Uniaxial and Biaxial Experimental Investigation
of Glassy Polymers.” Polymer 299 (2024). https://doi.org/10.1016/j.polymer.2024.126981.
ieee: 'A. Hamdoun and R. Mahnken, “Uniaxial and biaxial experimental investigation
of glassy polymers,” Polymer, vol. 299, Art. no. 126981, 2024, doi: 10.1016/j.polymer.2024.126981.'
mla: Hamdoun, Ayoub, and Rolf Mahnken. “Uniaxial and Biaxial Experimental Investigation
of Glassy Polymers.” Polymer, vol. 299, 126981, Elsevier BV, 2024, doi:10.1016/j.polymer.2024.126981.
short: A. Hamdoun, R. Mahnken, Polymer 299 (2024).
date_created: 2024-05-14T09:05:05Z
date_updated: 2024-09-26T11:25:29Z
department:
- _id: '9'
- _id: '154'
- _id: '321'
doi: 10.1016/j.polymer.2024.126981
intvolume: ' 299'
language:
- iso: eng
publication: Polymer
publication_identifier:
issn:
- 0032-3861
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: Uniaxial and biaxial experimental investigation of glassy polymers
type: journal_article
user_id: '57708'
volume: 299
year: '2024'
...
---
_id: '54280'
abstract:
- lang: eng
text: AbstractCold forming of polycarbonate films
results in the formation of shear bands in the necking zone. The numerical results
obtained from standard viscoplastic material models exhibit mesh size dependency,
requiring mathematical regularization. For this purpose, we present in this work
a large deformation gradient theory for a viscoplastic isotropic material model
published before. We extend our model to a micromorphic model by introducing a
new micromorphic variable as an additional degree of freedom along with its first
gradient. This variable represents a microequivalent plastic strain. The relation
between the macroequivalent plastic strain and the micromorphic variable is accomplished
by a micromorphic coupling modulus. This coupling forces proximity between the
macro- and microvariables, leading to the targeted regularization effect. The
micromorphic model is implemented as a three-dimensional initial boundary value
problem in an in-house finite element tool. The analysis is performed for both
uniaxial and biaxial specimens. The provided numerical examples show the ability
of our model to regularize shear bands within the specimens and address the issue
of localization.
author:
- first_name: Ayoub
full_name: Hamdoun, Ayoub
id: '57708'
last_name: Hamdoun
- first_name: Rolf
full_name: Mahnken, Rolf
id: '335'
last_name: Mahnken
citation:
ama: Hamdoun A, Mahnken R. A large deformation gradient theory for glassy polymers
by means of micromorphic regularization. Archive of Applied Mechanics.
2024;94(5):1221-1242. doi:10.1007/s00419-024-02570-0
apa: Hamdoun, A., & Mahnken, R. (2024). A large deformation gradient theory
for glassy polymers by means of micromorphic regularization. Archive of Applied
Mechanics, 94(5), 1221–1242. https://doi.org/10.1007/s00419-024-02570-0
bibtex: '@article{Hamdoun_Mahnken_2024, title={A large deformation gradient theory
for glassy polymers by means of micromorphic regularization}, volume={94}, DOI={10.1007/s00419-024-02570-0},
number={5}, journal={Archive of Applied Mechanics}, publisher={Springer Science
and Business Media LLC}, author={Hamdoun, Ayoub and Mahnken, Rolf}, year={2024},
pages={1221–1242} }'
chicago: 'Hamdoun, Ayoub, and Rolf Mahnken. “A Large Deformation Gradient Theory
for Glassy Polymers by Means of Micromorphic Regularization.” Archive of Applied
Mechanics 94, no. 5 (2024): 1221–42. https://doi.org/10.1007/s00419-024-02570-0.'
ieee: 'A. Hamdoun and R. Mahnken, “A large deformation gradient theory for glassy
polymers by means of micromorphic regularization,” Archive of Applied Mechanics,
vol. 94, no. 5, pp. 1221–1242, 2024, doi: 10.1007/s00419-024-02570-0.'
mla: Hamdoun, Ayoub, and Rolf Mahnken. “A Large Deformation Gradient Theory for
Glassy Polymers by Means of Micromorphic Regularization.” Archive of Applied
Mechanics, vol. 94, no. 5, Springer Science and Business Media LLC, 2024,
pp. 1221–42, doi:10.1007/s00419-024-02570-0.
short: A. Hamdoun, R. Mahnken, Archive of Applied Mechanics 94 (2024) 1221–1242.
date_created: 2024-05-14T09:05:40Z
date_updated: 2024-09-26T11:25:44Z
department:
- _id: '9'
- _id: '154'
- _id: '321'
doi: 10.1007/s00419-024-02570-0
intvolume: ' 94'
issue: '5'
language:
- iso: eng
page: 1221-1242
publication: Archive of Applied Mechanics
publication_identifier:
issn:
- 0939-1533
- 1432-0681
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
status: public
title: A large deformation gradient theory for glassy polymers by means of micromorphic
regularization
type: journal_article
user_id: '57708'
volume: 94
year: '2024'
...
---
_id: '56606'
abstract:
- lang: eng
text: AbstractMost FPGA boards in the HPC domain
are well-suited for parallel scaling because of the direct integration of versatile
and high-throughput network ports. However, the utilization of their network capabilities is
often challenging and error-prone because the whole network stack and communication
patterns have to be implemented and managed on the FPGAs. Also, this approach
conceptually involves a trade-off between the performance potential of improved
communication and the impact of resource consumption for communication infrastructure,
since the utilized resources on the FPGAs could otherwise be used for computations.
In this work, we investigate this trade-off, firstly, by using synthetic benchmarks
to evaluate the different configuration options of the communication framework
ACCL and their impact on communication latency and throughput. Finally, we use
our findings to implement a shallow water simulation whose scalability heavily
depends on low-latency communication. With a suitable configuration of ACCL, good
scaling behavior can be shown to all 48 FPGAs installed in the system. Overall,
the results show that the availability of inter-FPGA communication frameworks
as well as the configurability of framework and network stack are crucial to achieve
the best application performance with low latency communication.
author:
- first_name: Marius
full_name: Meyer, Marius
last_name: Meyer
- first_name: Tobias
full_name: Kenter, Tobias
last_name: Kenter
- first_name: Lucian
full_name: Petrica, Lucian
last_name: Petrica
- first_name: Kenneth
full_name: O’Brien, Kenneth
last_name: O’Brien
- first_name: Michaela
full_name: Blott, Michaela
last_name: Blott
- first_name: Christian
full_name: Plessl, Christian
last_name: Plessl
citation:
ama: 'Meyer M, Kenter T, Petrica L, O’Brien K, Blott M, Plessl C. Optimizing Communication
for Latency Sensitive HPC Applications on up to 48 FPGAs Using ACCL. In: Lecture
Notes in Computer Science. Springer Nature Switzerland; 2024. doi:10.1007/978-3-031-69766-1_9'
apa: Meyer, M., Kenter, T., Petrica, L., O’Brien, K., Blott, M., & Plessl, C.
(2024). Optimizing Communication for Latency Sensitive HPC Applications on up
to 48 FPGAs Using ACCL. In Lecture Notes in Computer Science. Springer
Nature Switzerland. https://doi.org/10.1007/978-3-031-69766-1_9
bibtex: '@inbook{Meyer_Kenter_Petrica_O’Brien_Blott_Plessl_2024, place={Cham}, title={Optimizing
Communication for Latency Sensitive HPC Applications on up to 48 FPGAs Using ACCL},
DOI={10.1007/978-3-031-69766-1_9},
booktitle={Lecture Notes in Computer Science}, publisher={Springer Nature Switzerland},
author={Meyer, Marius and Kenter, Tobias and Petrica, Lucian and O’Brien, Kenneth
and Blott, Michaela and Plessl, Christian}, year={2024} }'
chicago: 'Meyer, Marius, Tobias Kenter, Lucian Petrica, Kenneth O’Brien, Michaela
Blott, and Christian Plessl. “Optimizing Communication for Latency Sensitive HPC
Applications on up to 48 FPGAs Using ACCL.” In Lecture Notes in Computer Science.
Cham: Springer Nature Switzerland, 2024. https://doi.org/10.1007/978-3-031-69766-1_9.'
ieee: 'M. Meyer, T. Kenter, L. Petrica, K. O’Brien, M. Blott, and C. Plessl, “Optimizing
Communication for Latency Sensitive HPC Applications on up to 48 FPGAs Using ACCL,”
in Lecture Notes in Computer Science, Cham: Springer Nature Switzerland,
2024.'
mla: Meyer, Marius, et al. “Optimizing Communication for Latency Sensitive HPC Applications
on up to 48 FPGAs Using ACCL.” Lecture Notes in Computer Science, Springer
Nature Switzerland, 2024, doi:10.1007/978-3-031-69766-1_9.
short: 'M. Meyer, T. Kenter, L. Petrica, K. O’Brien, M. Blott, C. Plessl, in: Lecture
Notes in Computer Science, Springer Nature Switzerland, Cham, 2024.'
date_created: 2024-10-14T07:51:51Z
date_updated: 2024-10-14T07:55:50Z
department:
- _id: '27'
- _id: '518'
doi: 10.1007/978-3-031-69766-1_9
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
place: Cham
publication: Lecture Notes in Computer Science
publication_identifier:
isbn:
- '9783031697654'
- '9783031697661'
issn:
- 0302-9743
- 1611-3349
publication_status: published
publisher: Springer Nature Switzerland
quality_controlled: '1'
status: public
title: Optimizing Communication for Latency Sensitive HPC Applications on up to 48
FPGAs Using ACCL
type: book_chapter
user_id: '3145'
year: '2024'
...
---
_id: '56605'
author:
- first_name: Jan-Oliver
full_name: Opdenhövel, Jan-Oliver
id: '73960'
last_name: Opdenhövel
orcid: 0000-0003-2314-2784
- first_name: Christoph
full_name: Alt, Christoph
id: '100625'
last_name: Alt
- first_name: Christian
full_name: Plessl, Christian
id: '16153'
last_name: Plessl
orcid: 0000-0001-5728-9982
- first_name: Tobias
full_name: Kenter, Tobias
id: '3145'
last_name: Kenter
citation:
ama: 'Opdenhövel J-O, Alt C, Plessl C, Kenter T. StencilStream: A SYCL-based Stencil
Simulation Framework Targeting FPGAs. In: 2024 34th International Conference
on Field-Programmable Logic and Applications (FPL). IEEE; 2024. doi:10.1109/fpl64840.2024.00023'
apa: 'Opdenhövel, J.-O., Alt, C., Plessl, C., & Kenter, T. (2024). StencilStream:
A SYCL-based Stencil Simulation Framework Targeting FPGAs. 2024 34th International
Conference on Field-Programmable Logic and Applications (FPL). https://doi.org/10.1109/fpl64840.2024.00023'
bibtex: '@inproceedings{Opdenhövel_Alt_Plessl_Kenter_2024, title={StencilStream:
A SYCL-based Stencil Simulation Framework Targeting FPGAs}, DOI={10.1109/fpl64840.2024.00023},
booktitle={2024 34th International Conference on Field-Programmable Logic and
Applications (FPL)}, publisher={IEEE}, author={Opdenhövel, Jan-Oliver and Alt,
Christoph and Plessl, Christian and Kenter, Tobias}, year={2024} }'
chicago: 'Opdenhövel, Jan-Oliver, Christoph Alt, Christian Plessl, and Tobias Kenter.
“StencilStream: A SYCL-Based Stencil Simulation Framework Targeting FPGAs.” In
2024 34th International Conference on Field-Programmable Logic and Applications
(FPL). IEEE, 2024. https://doi.org/10.1109/fpl64840.2024.00023.'
ieee: 'J.-O. Opdenhövel, C. Alt, C. Plessl, and T. Kenter, “StencilStream: A SYCL-based
Stencil Simulation Framework Targeting FPGAs,” 2024, doi: 10.1109/fpl64840.2024.00023.'
mla: 'Opdenhövel, Jan-Oliver, et al. “StencilStream: A SYCL-Based Stencil Simulation
Framework Targeting FPGAs.” 2024 34th International Conference on Field-Programmable
Logic and Applications (FPL), IEEE, 2024, doi:10.1109/fpl64840.2024.00023.'
short: 'J.-O. Opdenhövel, C. Alt, C. Plessl, T. Kenter, in: 2024 34th International
Conference on Field-Programmable Logic and Applications (FPL), IEEE, 2024.'
date_created: 2024-10-14T07:49:24Z
date_updated: 2024-10-14T07:56:26Z
department:
- _id: '27'
- _id: '518'
doi: 10.1109/fpl64840.2024.00023
language:
- iso: eng
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: 2024 34th International Conference on Field-Programmable Logic and Applications
(FPL)
publication_status: published
publisher: IEEE
quality_controlled: '1'
status: public
title: 'StencilStream: A SYCL-based Stencil Simulation Framework Targeting FPGAs'
type: conference
user_id: '3145'
year: '2024'
...
---
_id: '56607'
author:
- first_name: Abdul Rehman
full_name: Tareen, Abdul Rehman
id: '76938'
last_name: Tareen
- first_name: Marius
full_name: Meyer, Marius
id: '40778'
last_name: Meyer
- first_name: Christian
full_name: Plessl, Christian
id: '16153'
last_name: Plessl
orcid: 0000-0001-5728-9982
- first_name: Tobias
full_name: Kenter, Tobias
id: '3145'
last_name: Kenter
citation:
ama: 'Tareen AR, Meyer M, Plessl C, Kenter T. HiHiSpMV: Sparse Matrix Vector Multiplication
with Hierarchical Row Reductions on FPGAs with High Bandwidth Memory. In: 2024
IEEE 32nd Annual International Symposium on Field-Programmable Custom Computing
Machines (FCCM). Vol 35. IEEE; 2024. doi:10.1109/fccm60383.2024.00014'
apa: 'Tareen, A. R., Meyer, M., Plessl, C., & Kenter, T. (2024). HiHiSpMV: Sparse
Matrix Vector Multiplication with Hierarchical Row Reductions on FPGAs with High
Bandwidth Memory. 2024 IEEE 32nd Annual International Symposium on Field-Programmable
Custom Computing Machines (FCCM), 35. https://doi.org/10.1109/fccm60383.2024.00014'
bibtex: '@inproceedings{Tareen_Meyer_Plessl_Kenter_2024, title={HiHiSpMV: Sparse
Matrix Vector Multiplication with Hierarchical Row Reductions on FPGAs with High
Bandwidth Memory}, volume={35}, DOI={10.1109/fccm60383.2024.00014},
booktitle={2024 IEEE 32nd Annual International Symposium on Field-Programmable
Custom Computing Machines (FCCM)}, publisher={IEEE}, author={Tareen, Abdul Rehman
and Meyer, Marius and Plessl, Christian and Kenter, Tobias}, year={2024} }'
chicago: 'Tareen, Abdul Rehman, Marius Meyer, Christian Plessl, and Tobias Kenter.
“HiHiSpMV: Sparse Matrix Vector Multiplication with Hierarchical Row Reductions
on FPGAs with High Bandwidth Memory.” In 2024 IEEE 32nd Annual International
Symposium on Field-Programmable Custom Computing Machines (FCCM), Vol. 35.
IEEE, 2024. https://doi.org/10.1109/fccm60383.2024.00014.'
ieee: 'A. R. Tareen, M. Meyer, C. Plessl, and T. Kenter, “HiHiSpMV: Sparse Matrix
Vector Multiplication with Hierarchical Row Reductions on FPGAs with High Bandwidth
Memory,” in 2024 IEEE 32nd Annual International Symposium on Field-Programmable
Custom Computing Machines (FCCM), 2024, vol. 35, doi: 10.1109/fccm60383.2024.00014.'
mla: 'Tareen, Abdul Rehman, et al. “HiHiSpMV: Sparse Matrix Vector Multiplication
with Hierarchical Row Reductions on FPGAs with High Bandwidth Memory.” 2024
IEEE 32nd Annual International Symposium on Field-Programmable Custom Computing
Machines (FCCM), vol. 35, IEEE, 2024, doi:10.1109/fccm60383.2024.00014.'
short: 'A.R. Tareen, M. Meyer, C. Plessl, T. Kenter, in: 2024 IEEE 32nd Annual International
Symposium on Field-Programmable Custom Computing Machines (FCCM), IEEE, 2024.'
date_created: 2024-10-14T07:59:08Z
date_updated: 2024-10-14T12:27:55Z
department:
- _id: '27'
- _id: '518'
doi: 10.1109/fccm60383.2024.00014
intvolume: ' 35'
language:
- iso: eng
publication: 2024 IEEE 32nd Annual International Symposium on Field-Programmable Custom
Computing Machines (FCCM)
publication_status: published
publisher: IEEE
quality_controlled: '1'
status: public
title: 'HiHiSpMV: Sparse Matrix Vector Multiplication with Hierarchical Row Reductions
on FPGAs with High Bandwidth Memory'
type: conference
user_id: '3145'
volume: 35
year: '2024'
...
---
_id: '56609'
abstract:
- lang: eng
text: 'The computation of electron repulsion integrals (ERIs) is a key component
for quantum chemical methods. The intensive computation and bandwidth demand for
ERI evaluation presents a significant challenge for quantum-mechanics-based atomistic
simulations with hybrid density functional theory: due to the tens of trillions
of ERI computations in each time step, practical applications are usually limited
to thousands of atoms. In this work, we propose SERI, a high-throughput streaming
accelerator for ERI computation on HBM-based FPGAs. In contrast to prior buffer-based
designs, SERI proposes a novel streaming architecture to address the on-chip buffer
limitation and the floorplanning challenge, and leverages the high-bandwidth memory
to overcome the bandwidth bottleneck in prior designs. Moreover, to meet the varying
computation, bandwidth, and floorplanning requirements between the 55 canonical
quartet classes in ERI calculation, we design an automation tool, together with
an accurate performance model, to automatically customize the architecture and
floorplanning strategy for each canonical quartet class to maximize their throughput.
Our performance evaluation on the AMD/Xilinx Alveo U280 FPGA board shows that,
SERI achieves an average speedup of 9.80 x over the previous best-performing FPGA
design, a 3.21x speedup over a 64-core AMD EPYC 7713 CPU, and a 15.64x speedup
over an Nvidia A40 GPU. It reaches a peak throughput of 23.8 GERIS ($10^9$ ERIs
per second) on one Alveo U280 FPGA. SERI will be released soon at https://github.com/SFU-HiAccel/SERI.'
author:
- first_name: Philip
full_name: Stachura, Philip
last_name: Stachura
- first_name: Guanyu
full_name: Li, Guanyu
last_name: Li
- first_name: Xin
full_name: Wu, Xin
id: '77439'
last_name: Wu
- first_name: Christian
full_name: Plessl, Christian
id: '16153'
last_name: Plessl
orcid: 0000-0001-5728-9982
- first_name: Zhenman
full_name: Fang, Zhenman
last_name: Fang
citation:
ama: 'Stachura P, Li G, Wu X, Plessl C, Fang Z. SERI: High-Throughput Streaming
Acceleration of Electron Repulsion Integral Computation in Quantum Chemistry using
HBM-based FPGAs. In: 2024 34th International Conference on Field-Programmable
Logic and Applications (FPL). IEEE; 2024:60-68. doi:10.1109/fpl64840.2024.00018'
apa: 'Stachura, P., Li, G., Wu, X., Plessl, C., & Fang, Z. (2024). SERI: High-Throughput
Streaming Acceleration of Electron Repulsion Integral Computation in Quantum Chemistry
using HBM-based FPGAs. 2024 34th International Conference on Field-Programmable
Logic and Applications (FPL), 60–68. https://doi.org/10.1109/fpl64840.2024.00018'
bibtex: '@inproceedings{Stachura_Li_Wu_Plessl_Fang_2024, title={SERI: High-Throughput
Streaming Acceleration of Electron Repulsion Integral Computation in Quantum Chemistry
using HBM-based FPGAs}, DOI={10.1109/fpl64840.2024.00018},
booktitle={2024 34th International Conference on Field-Programmable Logic and
Applications (FPL)}, publisher={IEEE}, author={Stachura, Philip and Li, Guanyu
and Wu, Xin and Plessl, Christian and Fang, Zhenman}, year={2024}, pages={60–68}
}'
chicago: 'Stachura, Philip, Guanyu Li, Xin Wu, Christian Plessl, and Zhenman Fang.
“SERI: High-Throughput Streaming Acceleration of Electron Repulsion Integral Computation
in Quantum Chemistry Using HBM-Based FPGAs.” In 2024 34th International Conference
on Field-Programmable Logic and Applications (FPL), 60–68. IEEE, 2024. https://doi.org/10.1109/fpl64840.2024.00018.'
ieee: 'P. Stachura, G. Li, X. Wu, C. Plessl, and Z. Fang, “SERI: High-Throughput
Streaming Acceleration of Electron Repulsion Integral Computation in Quantum Chemistry
using HBM-based FPGAs,” in 2024 34th International Conference on Field-Programmable
Logic and Applications (FPL), 2024, pp. 60–68, doi: 10.1109/fpl64840.2024.00018.'
mla: 'Stachura, Philip, et al. “SERI: High-Throughput Streaming Acceleration of
Electron Repulsion Integral Computation in Quantum Chemistry Using HBM-Based FPGAs.”
2024 34th International Conference on Field-Programmable Logic and Applications
(FPL), IEEE, 2024, pp. 60–68, doi:10.1109/fpl64840.2024.00018.'
short: 'P. Stachura, G. Li, X. Wu, C. Plessl, Z. Fang, in: 2024 34th International
Conference on Field-Programmable Logic and Applications (FPL), IEEE, 2024, pp.
60–68.'
date_created: 2024-10-14T08:44:44Z
date_updated: 2024-10-15T08:37:27Z
department:
- _id: '27'
- _id: '518'
doi: 10.1109/fpl64840.2024.00018
language:
- iso: eng
main_file_link:
- url: https://ieeexplore.ieee.org/document/10705609
page: 60-68
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: 2024 34th International Conference on Field-Programmable Logic and Applications
(FPL)
publication_status: published
publisher: IEEE
quality_controlled: '1'
status: public
title: 'SERI: High-Throughput Streaming Acceleration of Electron Repulsion Integral
Computation in Quantum Chemistry using HBM-based FPGAs'
type: conference
user_id: '77439'
year: '2024'
...
---
_id: '56832'
author:
- first_name: David
full_name: Scharwald, David
last_name: Scharwald
citation:
ama: 'Scharwald D. Intumeszierende Flammschutzmittel Im Lasersinter-Verfahren:
Optimierung Des Brandschutzes, Der Mechanischen Eigenschaften Und Analyse Der
Recyclingfähigkeit (Studienarbeit).; 2024.'
apa: 'Scharwald, D. (2024). Intumeszierende Flammschutzmittel im Lasersinter-Verfahren:
Optimierung des Brandschutzes, der mechanischen Eigenschaften und Analyse der
Recyclingfähigkeit (Studienarbeit).'
bibtex: '@book{Scharwald_2024, title={Intumeszierende Flammschutzmittel im Lasersinter-Verfahren:
Optimierung des Brandschutzes, der mechanischen Eigenschaften und Analyse der
Recyclingfähigkeit (Studienarbeit)}, author={Scharwald, David}, year={2024} }'
chicago: 'Scharwald, David. Intumeszierende Flammschutzmittel Im Lasersinter-Verfahren:
Optimierung Des Brandschutzes, Der Mechanischen Eigenschaften Und Analyse Der
Recyclingfähigkeit (Studienarbeit), 2024.'
ieee: 'D. Scharwald, Intumeszierende Flammschutzmittel im Lasersinter-Verfahren:
Optimierung des Brandschutzes, der mechanischen Eigenschaften und Analyse der
Recyclingfähigkeit (Studienarbeit). 2024.'
mla: 'Scharwald, David. Intumeszierende Flammschutzmittel Im Lasersinter-Verfahren:
Optimierung Des Brandschutzes, Der Mechanischen Eigenschaften Und Analyse Der
Recyclingfähigkeit (Studienarbeit). 2024.'
short: 'D. Scharwald, Intumeszierende Flammschutzmittel Im Lasersinter-Verfahren:
Optimierung Des Brandschutzes, Der Mechanischen Eigenschaften Und Analyse Der
Recyclingfähigkeit (Studienarbeit), 2024.'
date_created: 2024-10-31T07:37:16Z
date_updated: 2024-10-31T07:37:26Z
department:
- _id: '150'
- _id: '624'
- _id: '9'
language:
- iso: eng
status: public
supervisor:
- first_name: Hans-Joachim
full_name: Schmid, Hans-Joachim
id: '464'
last_name: Schmid
orcid: 000-0001-8590-1921
- first_name: Steffen
full_name: Jesinghausen, Steffen
id: '3959'
last_name: Jesinghausen
orcid: https://orcid.org/0000-0003-2611-5298
- first_name: Fabian
full_name: Neitzel, Fabian
id: '72307'
last_name: Neitzel
orcid: '0009-0004-8412-3645 '
title: 'Intumeszierende Flammschutzmittel im Lasersinter-Verfahren: Optimierung des
Brandschutzes, der mechanischen Eigenschaften und Analyse der Recyclingfähigkeit
(Studienarbeit)'
type: mastersthesis
user_id: '72307'
year: '2024'
...
---
_id: '56193'
abstract:
- lang: eng
text: 'Dielectric slab waveguides made of thin-film-lithium-niobate (TFLN) media
are consid-ered, for operation in the linear regime. We outline and implement
a largely analytic procedure forrigorous modal analysis of three-layer slabs with
birefringent, anisotropic core. For Z-cut wave-guides, the slab eigenmode problem
separates into uncoupled sets of scalar equations for TE andTM modes. Slabs in
X-cut configuration support mostly mildly hybrid eigenmodes, with clear pre-dominant
TE or TM polarization, and with effective indices that depend on the propagation
directionof the modes, relative to the crystal axes. Strong hybridization can
be observed for near degeneratemodes in singular configurations without vertical
symmetry, or in symmetric slabs where two nearlydegenerate modes are of the same
symmetry class. Dispersion curves for slab thickness and propa-gation angle are
discussed, for slabs with oxide and air cover. '
author:
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Henna
full_name: Farheen, Henna
id: '53444'
last_name: Farheen
orcid: 0000-0001-7730-3489
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Hammer M, Farheen H, Förstner J. Guided modes of thin-film lithium niobate
slabs. Optics Continuum. Published online 2024:532822. doi:10.1364/optcon.532822
apa: Hammer, M., Farheen, H., & Förstner, J. (2024). Guided modes of thin-film
lithium niobate slabs. Optics Continuum, 532822. https://doi.org/10.1364/optcon.532822
bibtex: '@article{Hammer_Farheen_Förstner_2024, title={Guided modes of thin-film
lithium niobate slabs}, DOI={10.1364/optcon.532822},
journal={Optics Continuum}, publisher={Optica Publishing Group}, author={Hammer,
Manfred and Farheen, Henna and Förstner, Jens}, year={2024}, pages={532822} }'
chicago: Hammer, Manfred, Henna Farheen, and Jens Förstner. “Guided Modes of Thin-Film
Lithium Niobate Slabs.” Optics Continuum, 2024, 532822. https://doi.org/10.1364/optcon.532822.
ieee: 'M. Hammer, H. Farheen, and J. Förstner, “Guided modes of thin-film lithium
niobate slabs,” Optics Continuum, p. 532822, 2024, doi: 10.1364/optcon.532822.'
mla: Hammer, Manfred, et al. “Guided Modes of Thin-Film Lithium Niobate Slabs.”
Optics Continuum, Optica Publishing Group, 2024, p. 532822, doi:10.1364/optcon.532822.
short: M. Hammer, H. Farheen, J. Förstner, Optics Continuum (2024) 532822.
date_created: 2024-09-21T09:17:16Z
date_updated: 2024-11-04T17:07:27Z
ddc:
- '530'
department:
- _id: '61'
- _id: '230'
- _id: '429'
doi: 10.1364/optcon.532822
file:
- access_level: closed
content_type: application/pdf
creator: fossie
date_created: 2024-11-04T17:05:30Z
date_updated: 2024-11-04T17:05:30Z
file_id: '56864'
file_name: 2024-11 Hammer - Optics Continuum - Guided modes of thin-film lithium
niobate slabs.pdf
file_size: 4399685
relation: main_file
success: 1
file_date_updated: 2024-11-04T17:05:30Z
has_accepted_license: '1'
keyword:
- tet_topic_waveguide
language:
- iso: eng
page: '532822'
project:
- _id: '266'
grant_number: PROFILNRW-2020-067
name: 'PhoQC: PhoQC: Photonisches Quantencomputing'
- _id: '167'
grant_number: '231447078'
name: 'TRR 142 - B06: TRR 142 - Ultraschnelle kohärente opto-elektronische Kontrolle
eines photonischen Quantensystems (B06*)'
- _id: '53'
grant_number: '231447078'
name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden
Konzepten zu funktionellen Strukturen'
publication: Optics Continuum
publication_identifier:
issn:
- 2770-0208
publication_status: published
publisher: Optica Publishing Group
status: public
title: Guided modes of thin-film lithium niobate slabs
type: journal_article
user_id: '158'
year: '2024'
...
---
_id: '56721'
article_number: '117277'
author:
- first_name: Rolf
full_name: Mahnken, Rolf
last_name: Mahnken
- first_name: Arnold
full_name: Tchomgue Simeu, Arnold
id: '83075'
last_name: Tchomgue Simeu
citation:
ama: Mahnken R, Tchomgue Simeu A. Downwind and upwind approximations for primal
and dual problems of elasto-plasticity with Prandtl–Reuss type material laws.
Computer Methods in Applied Mechanics and Engineering. 2024;432. doi:10.1016/j.cma.2024.117277
apa: Mahnken, R., & Tchomgue Simeu, A. (2024). Downwind and upwind approximations
for primal and dual problems of elasto-plasticity with Prandtl–Reuss type material
laws. Computer Methods in Applied Mechanics and Engineering, 432,
Article 117277. https://doi.org/10.1016/j.cma.2024.117277
bibtex: '@article{Mahnken_Tchomgue Simeu_2024, title={Downwind and upwind approximations
for primal and dual problems of elasto-plasticity with Prandtl–Reuss type material
laws}, volume={432}, DOI={10.1016/j.cma.2024.117277},
number={117277}, journal={Computer Methods in Applied Mechanics and Engineering},
publisher={Elsevier BV}, author={Mahnken, Rolf and Tchomgue Simeu, Arnold}, year={2024}
}'
chicago: Mahnken, Rolf, and Arnold Tchomgue Simeu. “Downwind and Upwind Approximations
for Primal and Dual Problems of Elasto-Plasticity with Prandtl–Reuss Type Material
Laws.” Computer Methods in Applied Mechanics and Engineering 432 (2024).
https://doi.org/10.1016/j.cma.2024.117277.
ieee: 'R. Mahnken and A. Tchomgue Simeu, “Downwind and upwind approximations for
primal and dual problems of elasto-plasticity with Prandtl–Reuss type material
laws,” Computer Methods in Applied Mechanics and Engineering, vol. 432,
Art. no. 117277, 2024, doi: 10.1016/j.cma.2024.117277.'
mla: Mahnken, Rolf, and Arnold Tchomgue Simeu. “Downwind and Upwind Approximations
for Primal and Dual Problems of Elasto-Plasticity with Prandtl–Reuss Type Material
Laws.” Computer Methods in Applied Mechanics and Engineering, vol. 432,
117277, Elsevier BV, 2024, doi:10.1016/j.cma.2024.117277.
short: R. Mahnken, A. Tchomgue Simeu, Computer Methods in Applied Mechanics and
Engineering 432 (2024).
date_created: 2024-10-22T10:44:02Z
date_updated: 2024-11-08T08:54:41Z
department:
- _id: '321'
- _id: '154'
- _id: '321'
doi: 10.1016/j.cma.2024.117277
intvolume: ' 432'
language:
- iso: eng
project:
- _id: '1218'
grant_number: 'Geschäftszeichen: MA 1979/30-2'
name: Hier20 - Zielorientierte Adaptivität für nichtlineare Homogenisierungen mittels
hierarchischer Modelle
publication: Computer Methods in Applied Mechanics and Engineering
publication_identifier:
issn:
- 0045-7825
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: Downwind and upwind approximations for primal and dual problems of elasto-plasticity
with Prandtl–Reuss type material laws
type: journal_article
user_id: '85414'
volume: 432
year: '2024'
...
---
_id: '55762'
abstract:
- lang: eng
text: The corrosion behavior of a hybrid laminate consisting of laser-structured
aluminum EN AW-6082 ∪ carbon fiber-reinforced polymer was investigated. Specimens
were corroded in aqueous NaCl electrolyte (0.1 mol/L) over a period of up to 31
days and characterized continuously by means of scanning electron and light microscopy,
supplemented by energy dispersive X-ray spectroscopy. Comparative linear sweep
voltammetry was employed on the first and seventh day of the corrosion experiment.
The influence of different laser morphologies and production process parameters
on corrosion behavior was compared. The corrosion reaction mainly arises from
the aluminum component and shows distinct differences in long-term corrosion morphology
between pure EN AW-6082 and the hybrid laminate. Compared to short-term investigations,
a strong influence of galvanic corrosion on the interface is assumed. No distinct
influences of different laser structuring and process parameters on the corrosion
behavior were detected. Weight measurements suggest a continuous loss of mass
attributed to the detachment of corrosion products.
article_number: '1907'
article_type: original
author:
- first_name: Alexander
full_name: Delp, Alexander
last_name: Delp
- first_name: Shuang
full_name: Wu, Shuang
id: '48039'
last_name: Wu
orcid: 0000-0001-8645-9952
- first_name: Jonathan
full_name: Freund, Jonathan
last_name: Freund
- first_name: Ronja
full_name: Scholz, Ronja
last_name: Scholz
- first_name: Miriam
full_name: Löbbecke, Miriam
last_name: Löbbecke
- first_name: Thomas
full_name: Tröster, Thomas
id: '553'
last_name: Tröster
- first_name: Jan
full_name: Haubrich, Jan
last_name: Haubrich
- first_name: Frank
full_name: Walther, Frank
last_name: Walther
citation:
ama: Delp A, Wu S, Freund J, et al. Characterization of Interfacial Corrosion Behavior
of Hybrid Laminate EN AW-6082 ∪ CFRP. Materials. 2024;17(8). doi:10.3390/ma17081907
apa: Delp, A., Wu, S., Freund, J., Scholz, R., Löbbecke, M., Tröster, T., Haubrich,
J., & Walther, F. (2024). Characterization of Interfacial Corrosion Behavior
of Hybrid Laminate EN AW-6082 ∪ CFRP. Materials, 17(8), Article
1907. https://doi.org/10.3390/ma17081907
bibtex: '@article{Delp_Wu_Freund_Scholz_Löbbecke_Tröster_Haubrich_Walther_2024,
title={Characterization of Interfacial Corrosion Behavior of Hybrid Laminate EN
AW-6082 ∪ CFRP}, volume={17}, DOI={10.3390/ma17081907},
number={81907}, journal={Materials}, publisher={MDPI AG}, author={Delp, Alexander
and Wu, Shuang and Freund, Jonathan and Scholz, Ronja and Löbbecke, Miriam and
Tröster, Thomas and Haubrich, Jan and Walther, Frank}, year={2024} }'
chicago: Delp, Alexander, Shuang Wu, Jonathan Freund, Ronja Scholz, Miriam Löbbecke,
Thomas Tröster, Jan Haubrich, and Frank Walther. “Characterization of Interfacial
Corrosion Behavior of Hybrid Laminate EN AW-6082 ∪ CFRP.” Materials 17,
no. 8 (2024). https://doi.org/10.3390/ma17081907.
ieee: 'A. Delp et al., “Characterization of Interfacial Corrosion Behavior
of Hybrid Laminate EN AW-6082 ∪ CFRP,” Materials, vol. 17, no. 8, Art.
no. 1907, 2024, doi: 10.3390/ma17081907.'
mla: Delp, Alexander, et al. “Characterization of Interfacial Corrosion Behavior
of Hybrid Laminate EN AW-6082 ∪ CFRP.” Materials, vol. 17, no. 8, 1907,
MDPI AG, 2024, doi:10.3390/ma17081907.
short: A. Delp, S. Wu, J. Freund, R. Scholz, M. Löbbecke, T. Tröster, J. Haubrich,
F. Walther, Materials 17 (2024).
date_created: 2024-08-26T10:48:30Z
date_updated: 2025-01-30T12:31:13Z
department:
- _id: '321'
- _id: '149'
- _id: '9'
doi: 10.3390/ma17081907
intvolume: ' 17'
issue: '8'
language:
- iso: eng
publication: Materials
publication_identifier:
issn:
- 1996-1944
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Characterization of Interfacial Corrosion Behavior of Hybrid Laminate EN AW-6082
∪ CFRP
type: journal_article
user_id: '48039'
volume: 17
year: '2024'
...
---
_id: '49652'
abstract:
- lang: eng
text: Broadband coherent anti-Stokes Raman scattering (BCARS) is a powerful spectroscopy
method combining high signal intensity with spectral sensitivity, enabling rapid
imaging of heterogeneous samples in biomedical research and, more recently, in
crystalline materials. However, BCARS encounters spectral distortion due to a
setup-dependent non-resonant background (NRB). This study assesses BCARS reproducibility
through a round robin experiment using two distinct BCARS setups and crystalline
materials with varying structural complexity, including diamond, 6H-SiC, KDP,
and KTP. The analysis compares setup-specific NRB correction procedures, detected
and NRB-removed spectra, and mode assignment. We determine the influence of BCARS
setup parameters like pump wavelength, pulse width, and detection geometry and
provide a practical guide for optimizing BCARS setups for solid-state applications.
article_number: '112'
article_type: original
author:
- first_name: Franz
full_name: Hempel, Franz
last_name: Hempel
- first_name: Federico
full_name: Vernuccio, Federico
last_name: Vernuccio
- first_name: Lukas
full_name: König, Lukas
last_name: König
- first_name: Robin
full_name: Buschbeck, Robin
last_name: Buschbeck
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Giulio
full_name: Cerullo, Giulio
last_name: Cerullo
- first_name: Dario
full_name: Polli, Dario
last_name: Polli
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
citation:
ama: 'Hempel F, Vernuccio F, König L, et al. Comparing transmission- and epi-BCARS:
a round robin on solid-state materials. Applied Optics. 2024;63(1). doi:10.1364/ao.505374'
apa: 'Hempel, F., Vernuccio, F., König, L., Buschbeck, R., Rüsing, M., Cerullo,
G., Polli, D., & Eng, L. M. (2024). Comparing transmission- and epi-BCARS:
a round robin on solid-state materials. Applied Optics, 63(1), Article
112. https://doi.org/10.1364/ao.505374'
bibtex: '@article{Hempel_Vernuccio_König_Buschbeck_Rüsing_Cerullo_Polli_Eng_2024,
title={Comparing transmission- and epi-BCARS: a round robin on solid-state materials},
volume={63}, DOI={10.1364/ao.505374},
number={1112}, journal={Applied Optics}, publisher={Optica Publishing Group},
author={Hempel, Franz and Vernuccio, Federico and König, Lukas and Buschbeck,
Robin and Rüsing, Michael and Cerullo, Giulio and Polli, Dario and Eng, Lukas
M.}, year={2024} }'
chicago: 'Hempel, Franz, Federico Vernuccio, Lukas König, Robin Buschbeck, Michael
Rüsing, Giulio Cerullo, Dario Polli, and Lukas M. Eng. “Comparing Transmission-
and Epi-BCARS: A Round Robin on Solid-State Materials.” Applied Optics
63, no. 1 (2024). https://doi.org/10.1364/ao.505374.'
ieee: 'F. Hempel et al., “Comparing transmission- and epi-BCARS: a round
robin on solid-state materials,” Applied Optics, vol. 63, no. 1, Art. no.
112, 2024, doi: 10.1364/ao.505374.'
mla: 'Hempel, Franz, et al. “Comparing Transmission- and Epi-BCARS: A Round Robin
on Solid-State Materials.” Applied Optics, vol. 63, no. 1, 112, Optica
Publishing Group, 2024, doi:10.1364/ao.505374.'
short: F. Hempel, F. Vernuccio, L. König, R. Buschbeck, M. Rüsing, G. Cerullo, D.
Polli, L.M. Eng, Applied Optics 63 (2024).
date_created: 2023-12-15T07:32:38Z
date_updated: 2025-04-03T12:36:01Z
department:
- _id: '15'
- _id: '288'
- _id: '623'
doi: 10.1364/ao.505374
intvolume: ' 63'
issue: '1'
keyword:
- Atomic and Molecular Physics
- and Optics
- Engineering (miscellaneous)
- Electrical and Electronic Engineering
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/pdf/2306.09701.pdf
oa: '1'
publication: Applied Optics
publication_identifier:
issn:
- 1559-128X
- 2155-3165
publication_status: published
publisher: Optica Publishing Group
quality_controlled: '1'
related_material:
link:
- relation: confirmation
url: https://arxiv.org/abs/2306.09701
status: public
title: 'Comparing transmission- and epi-BCARS: a round robin on solid-state materials'
type: journal_article
user_id: '22501'
volume: 63
year: '2024'
...
---
_id: '49430'
abstract:
- lang: eng
text: Within the current energy and environmental crisis, new material- and energy-saving
processes are needed. For this reason, this study focuses on the development of
a new forming technology for Ti-6Al-4V sheet metal. It is based on combination
of solution treatment by resistive heating with rapid tool-based quenching and
subsequent annealing. This new “TISTRAQ” process is comparable with press-hardening
already known for steels and hot die quenching known for aluminium alloys. One
of the main influencing factors for this process is the heat transfer coefficient
(HTC). It is an important driver for adjustment of basic parameters, as selection
of tool material or the forming speed but also plays an important role while elaborating
temperature distribution in the numerical model. Therefore, a new and unique test
rig was developed to determine the HTC and to perform tool-based heat treatment
at specimen level under laboratory conditions. The test rig was used to investigate
the influence of the titanium-tool-lubricant system on HTC and cooling rate. Further
the effect of heat treatment in the test rig and tool-based quenching on microstructure
and mechanical properties was studied. To improve the prediction of the temperature
distribution of the titanium during cooling, the HTC was integrated into the numerical
process simulation
author:
- first_name: Maximilian Alexander
full_name: Kaiser, Maximilian Alexander
id: '72351'
last_name: Kaiser
orcid: 0009-0008-1333-3396
- first_name: Fabian
full_name: Höschen, Fabian
last_name: Höschen
- first_name: Nina
full_name: Pfeffer, Nina
last_name: Pfeffer
- first_name: Mathias
full_name: Merten, Mathias
last_name: Merten
- first_name: Thomas
full_name: Meyer, Thomas
last_name: Meyer
- first_name: Thorsten
full_name: Marten, Thorsten
id: '338'
last_name: Marten
orcid: 0009-0001-6433-7839
- first_name: Pawel
full_name: Rockicki, Pawel
last_name: Rockicki
- first_name: Heinz Werner
full_name: Höppel, Heinz Werner
last_name: Höppel
- first_name: Thomas
full_name: Tröster, Thomas
id: '553'
last_name: Tröster
citation:
ama: 'Kaiser MA, Höschen F, Pfeffer N, et al. The new TISTRAQ process: Solution
treatment with rapid quenching and annealing for Ti-6Al-4V sheet metal part forming
- investigation on heat transfer coefficient and influence on cooling rates. In:
IOM3. Chapter 14: Forming, Machining & Joining [Version 1; Not Peer Reviewed].
; 2024. doi:doi.org/10.7490/f1000research.1119929.1'
apa: 'Kaiser, M. A., Höschen, F., Pfeffer, N., Merten, M., Meyer, T., Marten, T.,
Rockicki, P., Höppel, H. W., & Tröster, T. (2024). The new TISTRAQ process:
Solution treatment with rapid quenching and annealing for Ti-6Al-4V sheet metal
part forming - investigation on heat transfer coefficient and influence on cooling
rates. IOM3. Chapter 14: Forming, Machining & Joining [Version 1; Not Peer
Reviewed]. 15th World Conference on Titanium, Edinburgh. https://doi.org/doi.org/10.7490/f1000research.1119929.1'
bibtex: '@inproceedings{Kaiser_Höschen_Pfeffer_Merten_Meyer_Marten_Rockicki_Höppel_Tröster_2024,
title={The new TISTRAQ process: Solution treatment with rapid quenching and annealing
for Ti-6Al-4V sheet metal part forming - investigation on heat transfer coefficient
and influence on cooling rates}, DOI={doi.org/10.7490/f1000research.1119929.1},
booktitle={IOM3. Chapter 14: Forming, Machining & Joining [version 1; not
peer reviewed]}, author={Kaiser, Maximilian Alexander and Höschen, Fabian and
Pfeffer, Nina and Merten, Mathias and Meyer, Thomas and Marten, Thorsten and Rockicki,
Pawel and Höppel, Heinz Werner and Tröster, Thomas}, year={2024} }'
chicago: 'Kaiser, Maximilian Alexander, Fabian Höschen, Nina Pfeffer, Mathias Merten,
Thomas Meyer, Thorsten Marten, Pawel Rockicki, Heinz Werner Höppel, and Thomas
Tröster. “The New TISTRAQ Process: Solution Treatment with Rapid Quenching and
Annealing for Ti-6Al-4V Sheet Metal Part Forming - Investigation on Heat Transfer
Coefficient and Influence on Cooling Rates.” In IOM3. Chapter 14: Forming,
Machining & Joining [Version 1; Not Peer Reviewed], 2024. https://doi.org/doi.org/10.7490/f1000research.1119929.1.'
ieee: 'M. A. Kaiser et al., “The new TISTRAQ process: Solution treatment
with rapid quenching and annealing for Ti-6Al-4V sheet metal part forming - investigation
on heat transfer coefficient and influence on cooling rates,” presented at the
15th World Conference on Titanium, Edinburgh, 2024, doi: doi.org/10.7490/f1000research.1119929.1.'
mla: 'Kaiser, Maximilian Alexander, et al. “The New TISTRAQ Process: Solution Treatment
with Rapid Quenching and Annealing for Ti-6Al-4V Sheet Metal Part Forming - Investigation
on Heat Transfer Coefficient and Influence on Cooling Rates.” IOM3. Chapter
14: Forming, Machining & Joining [Version 1; Not Peer Reviewed], 2024,
doi:doi.org/10.7490/f1000research.1119929.1.'
short: 'M.A. Kaiser, F. Höschen, N. Pfeffer, M. Merten, T. Meyer, T. Marten, P.
Rockicki, H.W. Höppel, T. Tröster, in: IOM3. Chapter 14: Forming, Machining &
Joining [Version 1; Not Peer Reviewed], 2024.'
conference:
end_date: 2023-06-16
location: Edinburgh
name: 15th World Conference on Titanium
start_date: 2023-06-12
date_created: 2023-12-04T10:00:21Z
date_updated: 2025-05-19T11:46:47Z
department:
- _id: '9'
- _id: '321'
- _id: '149'
doi: doi.org/10.7490/f1000research.1119929.1
keyword:
- Interfacial heat transfer coefficient
- Ti-6Al-4V
- nonisothermal forming
- thermomechanical processing
- TISTRAQ process
language:
- iso: eng
publication: 'IOM3. Chapter 14: Forming, Machining & Joining [version 1; not peer
reviewed]'
publication_status: published
quality_controlled: '1'
status: public
title: 'The new TISTRAQ process: Solution treatment with rapid quenching and annealing
for Ti-6Al-4V sheet metal part forming - investigation on heat transfer coefficient
and influence on cooling rates'
type: conference
user_id: '72351'
year: '2024'
...
---
_id: '49437'
abstract:
- lang: eng
text: "The phase and TTT diagrams of the Ti-6Al-4V system allow the development
of a new forming process for a more energy- and materialefficient production of
sheet metal parts. This new “TISTRAQ” process is composed of two steps. In terms
of process technology, the first step is comparable to a direct press-hardening
process already well known for steels. In this step, the Ti-6Al-4V sheet material
is resistively heated to a temperature below β-transus Tβ and, after a very short
holding time, simultaneously formed and quenched by use of water cooled tools.
Thereby, the β phase undergoes a martensitic transformation. The second step is
a subsequent short-time annealing, which leads to a hardening of the material.
In this work, a new test rig using resistive heating technique was used in order
to produce\r\ndifferent solution treated and tool quenched (STQ) and subsequently
annealed (STA) states. In this paper, the effects of heating rate, solution treatment
temperature and holding time on microstructure and mechanical properties are addressed.
For the characterisation, tensile testing and scanning electron microscopy were
used. By the systematic variation of applied processing parameters, dominating
effects on microstructure and mechanical properties were evaluated. For example,
the solution treatment temperature was found to have a significant effect on microstructural
features and characteristic strength and strain values. The obtained results reveal
a high potential for future technical applications."
author:
- first_name: Nina
full_name: Pfeffer, Nina
last_name: Pfeffer
- first_name: Maximilian Alexander
full_name: Kaiser, Maximilian Alexander
id: '72351'
last_name: Kaiser
orcid: 0009-0008-1333-3396
- first_name: Thomas
full_name: Meyer, Thomas
last_name: Meyer
- first_name: Mathias
full_name: Göken, Mathias
last_name: Göken
- first_name: Heinz Werner
full_name: Höppel, Heinz Werner
last_name: Höppel
citation:
ama: 'Pfeffer N, Kaiser MA, Meyer T, Göken M, Höppel HW. The new TISTRAQ process:
Solution treatment with rapid quenching and annealing for Ti-6Al-4V sheet metal
part forming - the effect of processing parameters on microstructure and mechanical
properties. In: IOM3. Chapter 14: Forming, Machining & Joining [Version
1; Not Peer Reviewed]. doi:https://doi.org/10.7490/f1000research.1119929.1'
apa: 'Pfeffer, N., Kaiser, M. A., Meyer, T., Göken, M., & Höppel, H. W. (n.d.).
The new TISTRAQ process: Solution treatment with rapid quenching and annealing
for Ti-6Al-4V sheet metal part forming - the effect of processing parameters on
microstructure and mechanical properties. IOM3. Chapter 14: Forming, Machining
& Joining [Version 1; Not Peer Reviewed]. 15th World Conference on Titanium,
Edinburgh. https://doi.org/10.7490/f1000research.1119929.1'
bibtex: '@inproceedings{Pfeffer_Kaiser_Meyer_Göken_Höppel, title={The new TISTRAQ
process: Solution treatment with rapid quenching and annealing for Ti-6Al-4V sheet
metal part forming - the effect of processing parameters on microstructure and
mechanical properties}, DOI={https://doi.org/10.7490/f1000research.1119929.1},
booktitle={IOM3. Chapter 14: Forming, Machining & Joining [version 1; not
peer reviewed]}, author={Pfeffer, Nina and Kaiser, Maximilian Alexander and Meyer,
Thomas and Göken, Mathias and Höppel, Heinz Werner} }'
chicago: 'Pfeffer, Nina, Maximilian Alexander Kaiser, Thomas Meyer, Mathias Göken,
and Heinz Werner Höppel. “The New TISTRAQ Process: Solution Treatment with Rapid
Quenching and Annealing for Ti-6Al-4V Sheet Metal Part Forming - the Effect of
Processing Parameters on Microstructure and Mechanical Properties.” In IOM3.
Chapter 14: Forming, Machining & Joining [Version 1; Not Peer Reviewed],
n.d. https://doi.org/10.7490/f1000research.1119929.1.'
ieee: 'N. Pfeffer, M. A. Kaiser, T. Meyer, M. Göken, and H. W. Höppel, “The new
TISTRAQ process: Solution treatment with rapid quenching and annealing for Ti-6Al-4V
sheet metal part forming - the effect of processing parameters on microstructure
and mechanical properties,” presented at the 15th World Conference on Titanium,
Edinburgh, doi: https://doi.org/10.7490/f1000research.1119929.1.'
mla: 'Pfeffer, Nina, et al. “The New TISTRAQ Process: Solution Treatment with Rapid
Quenching and Annealing for Ti-6Al-4V Sheet Metal Part Forming - the Effect of
Processing Parameters on Microstructure and Mechanical Properties.” IOM3. Chapter
14: Forming, Machining & Joining [Version 1; Not Peer Reviewed], doi:https://doi.org/10.7490/f1000research.1119929.1.'
short: 'N. Pfeffer, M.A. Kaiser, T. Meyer, M. Göken, H.W. Höppel, in: IOM3. Chapter
14: Forming, Machining & Joining [Version 1; Not Peer Reviewed], n.d.'
conference:
end_date: 2023-06-16
location: Edinburgh
name: 15th World Conference on Titanium
start_date: 2023-06-12
date_created: 2023-12-04T11:08:49Z
date_updated: 2025-05-19T11:46:28Z
department:
- _id: '9'
- _id: '321'
- _id: '149'
doi: https://doi.org/10.7490/f1000research.1119929.1
keyword:
- Ti-6Al-4V
- thermomechanical processing
- resistive heating
- quench-forming
- process parameter-microstructure-properties relationship
language:
- iso: eng
publication: 'IOM3. Chapter 14: Forming, Machining & Joining [version 1; not peer
reviewed]'
publication_status: submitted
status: public
title: 'The new TISTRAQ process: Solution treatment with rapid quenching and annealing
for Ti-6Al-4V sheet metal part forming - the effect of processing parameters on
microstructure and mechanical properties'
type: conference
user_id: '72351'
year: '2024'
...
---
_id: '60023'
author:
- first_name: Helene
full_name: Wetter, Helene
last_name: Wetter
- first_name: Wenlong
full_name: Gao, Wenlong
last_name: Gao
- first_name: Falk
full_name: Rehberg, Falk
last_name: Rehberg
- first_name: Jan
full_name: Wingenbach, Jan
id: '69187'
last_name: Wingenbach
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
citation:
ama: 'Wetter H, Gao W, Rehberg F, Wingenbach J, Schumacher S, Zentgraf T. Dielectric
metasurface for wave-vector variant and circular polarization dependent transmission.
In: Proceedings of The 14th International Conference on Metamaterials, Photonic
Crystals and Plasmonics. ; 2024.'
apa: Wetter, H., Gao, W., Rehberg, F., Wingenbach, J., Schumacher, S., & Zentgraf,
T. (2024). Dielectric metasurface for wave-vector variant and circular polarization
dependent transmission. Proceedings of The 14th International Conference on
Metamaterials, Photonic Crystals and Plasmonics. META 2024 - The 14th International
Conference on Metamaterials, Photonic Crystals and Plasmonics, Toyama, Japan.
bibtex: '@inproceedings{Wetter_Gao_Rehberg_Wingenbach_Schumacher_Zentgraf_2024,
title={Dielectric metasurface for wave-vector variant and circular polarization
dependent transmission}, booktitle={Proceedings of The 14th International Conference
on Metamaterials, Photonic Crystals and Plasmonics}, author={Wetter, Helene and
Gao, Wenlong and Rehberg, Falk and Wingenbach, Jan and Schumacher, Stefan and
Zentgraf, Thomas}, year={2024} }'
chicago: Wetter, Helene, Wenlong Gao, Falk Rehberg, Jan Wingenbach, Stefan Schumacher,
and Thomas Zentgraf. “Dielectric Metasurface for Wave-Vector Variant and Circular
Polarization Dependent Transmission.” In Proceedings of The 14th International
Conference on Metamaterials, Photonic Crystals and Plasmonics, 2024.
ieee: H. Wetter, W. Gao, F. Rehberg, J. Wingenbach, S. Schumacher, and T. Zentgraf,
“Dielectric metasurface for wave-vector variant and circular polarization dependent
transmission,” presented at the META 2024 - The 14th International Conference
on Metamaterials, Photonic Crystals and Plasmonics, Toyama, Japan, 2024.
mla: Wetter, Helene, et al. “Dielectric Metasurface for Wave-Vector Variant and
Circular Polarization Dependent Transmission.” Proceedings of The 14th International
Conference on Metamaterials, Photonic Crystals and Plasmonics, 2024.
short: 'H. Wetter, W. Gao, F. Rehberg, J. Wingenbach, S. Schumacher, T. Zentgraf,
in: Proceedings of The 14th International Conference on Metamaterials, Photonic
Crystals and Plasmonics, 2024.'
conference:
end_date: 2024-07-19
location: Toyama, Japan
name: META 2024 - The 14th International Conference on Metamaterials, Photonic Crystals
and Plasmonics
start_date: 2024-07-16
date_created: 2025-05-23T06:30:36Z
date_updated: 2025-05-23T06:34:16Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
- _id: '623'
language:
- iso: eng
project:
- _id: '53'
grant_number: '231447078'
name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden
Konzepten zu funktionellen Strukturen'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '164'
grant_number: '231447078'
name: 'TRR 142 - A09: TRR 142 - Erzeugung von Drei-Photonen-Zuständen mit On-Chip
Pumplichtunterdrückung in topologischen Wellenleitern (A09*)'
publication: Proceedings of The 14th International Conference on Metamaterials, Photonic
Crystals and Plasmonics
publication_identifier:
issn:
- 2429-1390
status: public
title: Dielectric metasurface for wave-vector variant and circular polarization dependent
transmission
type: conference
user_id: '30525'
year: '2024'
...
---
_id: '32101'
author:
- first_name: Tobias
full_name: Weich, Tobias
id: '49178'
last_name: Weich
orcid: 0000-0002-9648-6919
- first_name: Yannick
full_name: Guedes Bonthonneau, Yannick
last_name: Guedes Bonthonneau
- first_name: Colin
full_name: Guillarmou, Colin
last_name: Guillarmou
- first_name: Joachim
full_name: Hilgert, Joachim
id: '220'
last_name: Hilgert
citation:
ama: Weich T, Guedes Bonthonneau Y, Guillarmou C, Hilgert J. Ruelle-Taylor resonances
of Anosov actions. J Europ Math Soc. 2024;27(8):3085–3147. doi:https://doi.org/10.4171/JEMS/1428
apa: Weich, T., Guedes Bonthonneau, Y., Guillarmou, C., & Hilgert, J. (2024).
Ruelle-Taylor resonances of Anosov actions. J. Europ. Math. Soc., 27(8),
3085–3147. https://doi.org/10.4171/JEMS/1428
bibtex: '@article{Weich_Guedes Bonthonneau_Guillarmou_Hilgert_2024, title={Ruelle-Taylor
resonances of Anosov actions}, volume={27}, DOI={https://doi.org/10.4171/JEMS/1428},
number={8}, journal={J. Europ. Math. Soc.}, author={Weich, Tobias and Guedes Bonthonneau,
Yannick and Guillarmou, Colin and Hilgert, Joachim}, year={2024}, pages={3085–3147}
}'
chicago: 'Weich, Tobias, Yannick Guedes Bonthonneau, Colin Guillarmou, and Joachim
Hilgert. “Ruelle-Taylor Resonances of Anosov Actions.” J. Europ. Math. Soc.
27, no. 8 (2024): 3085–3147. https://doi.org/10.4171/JEMS/1428.'
ieee: 'T. Weich, Y. Guedes Bonthonneau, C. Guillarmou, and J. Hilgert, “Ruelle-Taylor
resonances of Anosov actions,” J. Europ. Math. Soc., vol. 27, no. 8, pp.
3085–3147, 2024, doi: https://doi.org/10.4171/JEMS/1428.'
mla: Weich, Tobias, et al. “Ruelle-Taylor Resonances of Anosov Actions.” J. Europ.
Math. Soc., vol. 27, no. 8, 2024, pp. 3085–3147, doi:https://doi.org/10.4171/JEMS/1428.
short: T. Weich, Y. Guedes Bonthonneau, C. Guillarmou, J. Hilgert, J. Europ. Math.
Soc. 27 (2024) 3085–3147.
date_created: 2022-06-22T09:56:51Z
date_updated: 2026-02-18T10:33:34Z
ddc:
- '510'
department:
- _id: '10'
- _id: '623'
- _id: '548'
- _id: '91'
doi: https://doi.org/10.4171/JEMS/1428
file:
- access_level: open_access
content_type: application/pdf
creator: weich
date_created: 2022-06-22T09:56:47Z
date_updated: 2022-06-22T09:56:47Z
file_id: '32102'
file_name: 2007.14275.pdf
file_size: 796410
relation: main_file
file_date_updated: 2022-06-22T09:56:47Z
has_accepted_license: '1'
intvolume: ' 27'
issue: '8'
language:
- iso: eng
oa: '1'
page: 3085–3147
publication: J. Europ. Math. Soc.
publication_status: published
status: public
title: Ruelle-Taylor resonances of Anosov actions
type: journal_article
user_id: '49178'
volume: 27
year: '2024'
...
---
_id: '57467'
abstract:
- lang: eng
text: Additive manufacturing of metallic components often results in the
formation of columnar grain structures aligned along the build direction. These
elongated grains can introduce anisotropy, negatively impacting the mechanical
properties of the components. This study aimed to achieve controlled solidification
with a fine-grained microstructure to enhance the mechanical performance of printed
parts. Stainless steel 316L was used as the test material. High-intensity ultrasound
was applied during the direct energy deposition (DED) process to inhibit the formation
of columnar grains. The investigation emphasized the importance of amplitude changes
of the ultrasound wave as the system’s geometry continuously evolves with the
addition of multiple layers and assessed how these changes influence the grain
size and distribution. Initial tests revealed significant amplitude fluctuations
during layer deposition, highlighting the impact of layer deposition on process
uniformity. The mechanical results demonstrated that the application of ultrasound
effectively refined the grain structure, leading to a 15% increase in tensile
strength compared to conventionally additively manufactured samples.
article_number: '1001'
author:
- first_name: Dennis
full_name: Lehnert, Dennis
id: '90491'
last_name: Lehnert
- first_name: Christian
full_name: Bödger, Christian
id: '93904'
last_name: Bödger
- first_name: Philipp
full_name: Pabel, Philipp
id: '67374'
last_name: Pabel
- first_name: Claus
full_name: Scheidemann, Claus
id: '38259'
last_name: Scheidemann
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Stefan
full_name: Gnaase, Stefan
id: '25730'
last_name: Gnaase
- first_name: David
full_name: Kostka, David
last_name: Kostka
- first_name: Thomas
full_name: Tröster, Thomas
id: '553'
last_name: Tröster
citation:
ama: Lehnert D, Bödger C, Pabel P, et al. The Influence of Ultrasonic Irradiation
of a 316L Weld Pool Produced by DED on the Mechanical Properties of the Produced
Component. Crystals. 2024;14(11). doi:10.3390/cryst14111001
apa: Lehnert, D., Bödger, C., Pabel, P., Scheidemann, C., Hemsel, T., Gnaase, S.,
Kostka, D., & Tröster, T. (2024). The Influence of Ultrasonic Irradiation
of a 316L Weld Pool Produced by DED on the Mechanical Properties of the Produced
Component. Crystals, 14(11), Article 1001. https://doi.org/10.3390/cryst14111001
bibtex: '@article{Lehnert_Bödger_Pabel_Scheidemann_Hemsel_Gnaase_Kostka_Tröster_2024,
title={The Influence of Ultrasonic Irradiation of a 316L Weld Pool Produced by
DED on the Mechanical Properties of the Produced Component}, volume={14}, DOI={10.3390/cryst14111001}, number={111001},
journal={Crystals}, publisher={MDPI AG}, author={Lehnert, Dennis and Bödger, Christian
and Pabel, Philipp and Scheidemann, Claus and Hemsel, Tobias and Gnaase, Stefan
and Kostka, David and Tröster, Thomas}, year={2024} }'
chicago: Lehnert, Dennis, Christian Bödger, Philipp Pabel, Claus Scheidemann, Tobias
Hemsel, Stefan Gnaase, David Kostka, and Thomas Tröster. “The Influence of Ultrasonic
Irradiation of a 316L Weld Pool Produced by DED on the Mechanical Properties of
the Produced Component.” Crystals 14, no. 11 (2024). https://doi.org/10.3390/cryst14111001.
ieee: 'D. Lehnert et al., “The Influence of Ultrasonic Irradiation of a 316L
Weld Pool Produced by DED on the Mechanical Properties of the Produced Component,”
Crystals, vol. 14, no. 11, Art. no. 1001, 2024, doi: 10.3390/cryst14111001.'
mla: Lehnert, Dennis, et al. “The Influence of Ultrasonic Irradiation of a 316L
Weld Pool Produced by DED on the Mechanical Properties of the Produced Component.”
Crystals, vol. 14, no. 11, 1001, MDPI AG, 2024, doi:10.3390/cryst14111001.
short: D. Lehnert, C. Bödger, P. Pabel, C. Scheidemann, T. Hemsel, S. Gnaase, D.
Kostka, T. Tröster, Crystals 14 (2024).
date_created: 2024-11-28T08:45:06Z
date_updated: 2026-02-23T08:07:37Z
ddc:
- '670'
department:
- _id: '149'
- _id: '321'
- _id: '9'
doi: 10.3390/cryst14111001
file:
- access_level: closed
content_type: application/pdf
creator: dlehnert
date_created: 2024-11-28T08:52:48Z
date_updated: 2024-11-28T08:52:48Z
file_id: '57470'
file_name: crystals-14-01001-v2 (4).pdf
file_size: 5779744
relation: main_file
success: 1
file_date_updated: 2024-11-28T08:52:48Z
has_accepted_license: '1'
intvolume: ' 14'
issue: '11'
language:
- iso: eng
publication: Crystals
publication_identifier:
issn:
- 2073-4352
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: The Influence of Ultrasonic Irradiation of a 316L Weld Pool Produced by DED
on the Mechanical Properties of the Produced Component
type: journal_article
user_id: '93904'
volume: 14
year: '2024'
...
---
_id: '55638'
abstract:
- lang: eng
text: Abstract. Traditionally, joints are cylindrical and rotationally symmetric.
In the present study, non-rotationally symmetric joints are used for joining steel
and Glass mat-reinforced thermoplastic sheets (GMT). In addition, the study also
analyzes the impact of non-rotational symmetric joint rotation on the load-bearing
capacity. Single lap joint specimens were fabricated using the In-Mold assembly
technique for joining steel sheets with GMT. Tensile shear tests were performed
on different orientations of the joint geometry, and it was observed that changing
the joint orientation influences the load-bearing capacity. The joints are constitutively
modeled using beam elements and the influence of joint rotation on load distribution
is examined through a static simulation study.
author:
- first_name: Deekshith Reddy
full_name: Devulapally, Deekshith Reddy
id: '76837'
last_name: Devulapally
- first_name: Sven
full_name: Martin, Sven
id: '38177'
last_name: Martin
- first_name: Thomas
full_name: Tröster, Thomas
id: '553'
last_name: Tröster
citation:
ama: 'Devulapally DR, Martin S, Tröster T. Non-rotationally symmetric joints – Mechanisms
and load bearing capacity. In: Materials Research Proceedings. Materials
Research Forum LLC; 2024. doi:10.21741/9781644903131-183'
apa: Devulapally, D. R., Martin, S., & Tröster, T. (2024). Non-rotationally
symmetric joints – Mechanisms and load bearing capacity. Materials Research
Proceedings. https://doi.org/10.21741/9781644903131-183
bibtex: '@inproceedings{Devulapally_Martin_Tröster_2024, title={Non-rotationally
symmetric joints – Mechanisms and load bearing capacity}, DOI={10.21741/9781644903131-183},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Devulapally, Deekshith Reddy and Martin, Sven and Tröster, Thomas},
year={2024} }'
chicago: Devulapally, Deekshith Reddy, Sven Martin, and Thomas Tröster. “Non-Rotationally
Symmetric Joints – Mechanisms and Load Bearing Capacity.” In Materials Research
Proceedings. Materials Research Forum LLC, 2024. https://doi.org/10.21741/9781644903131-183.
ieee: 'D. R. Devulapally, S. Martin, and T. Tröster, “Non-rotationally symmetric
joints – Mechanisms and load bearing capacity,” 2024, doi: 10.21741/9781644903131-183.'
mla: Devulapally, Deekshith Reddy, et al. “Non-Rotationally Symmetric Joints – Mechanisms
and Load Bearing Capacity.” Materials Research Proceedings, Materials Research
Forum LLC, 2024, doi:10.21741/9781644903131-183.
short: 'D.R. Devulapally, S. Martin, T. Tröster, in: Materials Research Proceedings,
Materials Research Forum LLC, 2024.'
date_created: 2024-08-19T08:29:22Z
date_updated: 2026-02-27T10:50:30Z
department:
- _id: '149'
- _id: '321'
- _id: '9'
doi: 10.21741/9781644903131-183
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
project:
- _id: '140'
name: 'TRR 285 – B01: TRR 285 - Subproject B01'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
status: public
title: Non-rotationally symmetric joints – Mechanisms and load bearing capacity
type: conference
user_id: '76837'
year: '2024'
...
---
_id: '57028'
abstract:
- lang: eng
text: Lithium niobate and lithium tantalate are among the most widespread
materials for nonlinear, integrated photonics. Mixed crystals with arbitrary Nb–Ta
ratios provide an additional degree of freedom to not only tune materials properties,
such as the birefringence but also leverage the advantages of the singular compounds,
for example, by combining the thermal stability of lithium tantalate with the
larger nonlinear or piezoelectric constants of lithium niobate. Periodic poling
allows to achieve phase-matching independent of waveguide geometry and is, therefore,
one of the commonly used methods in integrated nonlinear optics. For mixed crystals,
periodic poling has been challenging so far due to the lack of homogeneous, mono-domain
crystals, which severely inhibit domain growth and nucleation. In this work, we
investigate surface-near (<1μm depth) domain inversion on x-cut lithium
niobate tantalate mixed crystals via electric field poling and lithographically
structured electrodes. We find that naturally occurring head-to-head or tail-to-tail
domain walls in the as-grown crystal inhibit domain inversion at a larger scale.
However, periodic poling is possible if the gap size between the poling electrodes
is of the same order of magnitude or smaller than the average size of naturally
occurring domains. This work provides the basis for the nonlinear optical application
of lithium niobate tantalate mixed crystals.
author:
- first_name: Laura
full_name: Bollmers, Laura
id: '61375'
last_name: Bollmers
- first_name: Tobias
full_name: Babai-Hemati, Tobias
last_name: Babai-Hemati
- first_name: Boris
full_name: Koppitz, Boris
last_name: Koppitz
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Bollmers L, Babai-Hemati T, Koppitz B, et al. Surface-near domain engineering
in multi-domain x-cut lithium niobate tantalate mixed crystals. Applied Physics
Letters. 2024;125(15). doi:10.1063/5.0210972
apa: Bollmers, L., Babai-Hemati, T., Koppitz, B., Eigner, C., Padberg, L., Rüsing,
M., Eng, L. M., & Silberhorn, C. (2024). Surface-near domain engineering in
multi-domain x-cut lithium niobate tantalate mixed crystals. Applied Physics
Letters, 125(15). https://doi.org/10.1063/5.0210972
bibtex: '@article{Bollmers_Babai-Hemati_Koppitz_Eigner_Padberg_Rüsing_Eng_Silberhorn_2024,
title={Surface-near domain engineering in multi-domain x-cut lithium niobate tantalate
mixed crystals}, volume={125}, DOI={10.1063/5.0210972},
number={15}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Bollmers,
Laura and Babai-Hemati, Tobias and Koppitz, Boris and Eigner, Christof and Padberg,
Laura and Rüsing, Michael and Eng, Lukas M. and Silberhorn, Christine}, year={2024}
}'
chicago: Bollmers, Laura, Tobias Babai-Hemati, Boris Koppitz, Christof Eigner, Laura
Padberg, Michael Rüsing, Lukas M. Eng, and Christine Silberhorn. “Surface-near
Domain Engineering in Multi-Domain x-Cut Lithium Niobate Tantalate Mixed Crystals.”
Applied Physics Letters 125, no. 15 (2024). https://doi.org/10.1063/5.0210972.
ieee: 'L. Bollmers et al., “Surface-near domain engineering in multi-domain
x-cut lithium niobate tantalate mixed crystals,” Applied Physics Letters,
vol. 125, no. 15, 2024, doi: 10.1063/5.0210972.'
mla: Bollmers, Laura, et al. “Surface-near Domain Engineering in Multi-Domain x-Cut
Lithium Niobate Tantalate Mixed Crystals.” Applied Physics Letters, vol.
125, no. 15, AIP Publishing, 2024, doi:10.1063/5.0210972.
short: L. Bollmers, T. Babai-Hemati, B. Koppitz, C. Eigner, L. Padberg, M. Rüsing,
L.M. Eng, C. Silberhorn, Applied Physics Letters 125 (2024).
date_created: 2024-11-13T08:06:59Z
date_updated: 2024-11-15T09:15:08Z
department:
- _id: '15'
- _id: '623'
- _id: '230'
- _id: '288'
doi: 10.1063/5.0210972
intvolume: ' 125'
issue: '15'
language:
- iso: eng
project:
- _id: '168'
grant_number: '231447078'
name: 'TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften
von Lithiumniobat (B07*)'
publication: Applied Physics Letters
publication_identifier:
issn:
- 0003-6951
- 1077-3118
publication_status: published
publisher: AIP Publishing
status: public
title: Surface-near domain engineering in multi-domain x-cut lithium niobate tantalate
mixed crystals
type: journal_article
user_id: '61375'
volume: 125
year: '2024'
...