---
_id: '63800'
abstract:
- lang: eng
text: In this contribution, we address the estimation of the frequency-dependent
elastic parameters of polymers in the ultrasound range, which is formulated as
an inverse problem. This inverse problem is implemented as a nonlinear regression-type
optimization problem, in which the simulation signals are fitted to the measurement
signals. These signals consist of displacement responses in waveguides, focusing
on hollow cylindrical geometries to enhance the simulation efficiency. To accelerate
the optimization and reduce the number of model evaluations and wait times, we
propose two novel methods. First, we introduce an adaptation of the Levenberg–Marquardt
method derived from a geometrical interpretation of the least-squares optimization
problem. Second, we introduce an improved objective function based on the autocorrelated
envelopes of the measurement and simulation signals. Given that this study primarily
relies on simulation data to quantify optimization convergence, we aggregate the
expected ranges of realistic material parameters and derive their distributions
to ensure the reproducibility of optimizations with proper measurements. We demonstrate
the effectiveness of our objective function modification and step adaptation for
various materials with isotropic material symmetry by comparing them with the
Broyden–Fletcher–Goldfarb–Shanno method. In all cases, our method reduces the
total number of model evaluations, thereby shortening the time to identify the
material parameters.
author:
- first_name: Dominik
full_name: Itner, Dominik
last_name: Itner
- first_name: Dmitrij
full_name: Dreiling, Dmitrij
id: '32616'
last_name: Dreiling
- first_name: Hauke
full_name: Gravenkamp, Hauke
last_name: Gravenkamp
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
- first_name: Carolin
full_name: Birk, Carolin
last_name: Birk
citation:
ama: Itner D, Dreiling D, Gravenkamp H, Henning B, Birk C. A modified Levenberg–Marquardt
method for estimating the elastic material parameters of polymer waveguides using
residuals between autocorrelated frequency responses. Mechanical Systems and
Signal Processing. 2026;247:113904. doi:https://doi.org/10.1016/j.ymssp.2026.113904
apa: Itner, D., Dreiling, D., Gravenkamp, H., Henning, B., & Birk, C. (2026).
A modified Levenberg–Marquardt method for estimating the elastic material parameters
of polymer waveguides using residuals between autocorrelated frequency responses.
Mechanical Systems and Signal Processing, 247, 113904. https://doi.org/10.1016/j.ymssp.2026.113904
bibtex: '@article{Itner_Dreiling_Gravenkamp_Henning_Birk_2026, title={A modified
Levenberg–Marquardt method for estimating the elastic material parameters of polymer
waveguides using residuals between autocorrelated frequency responses}, volume={247},
DOI={https://doi.org/10.1016/j.ymssp.2026.113904},
journal={Mechanical Systems and Signal Processing}, author={Itner, Dominik and
Dreiling, Dmitrij and Gravenkamp, Hauke and Henning, Bernd and Birk, Carolin},
year={2026}, pages={113904} }'
chicago: 'Itner, Dominik, Dmitrij Dreiling, Hauke Gravenkamp, Bernd Henning, and
Carolin Birk. “A Modified Levenberg–Marquardt Method for Estimating the Elastic
Material Parameters of Polymer Waveguides Using Residuals between Autocorrelated
Frequency Responses.” Mechanical Systems and Signal Processing 247 (2026):
113904. https://doi.org/10.1016/j.ymssp.2026.113904.'
ieee: 'D. Itner, D. Dreiling, H. Gravenkamp, B. Henning, and C. Birk, “A modified
Levenberg–Marquardt method for estimating the elastic material parameters of polymer
waveguides using residuals between autocorrelated frequency responses,” Mechanical
Systems and Signal Processing, vol. 247, p. 113904, 2026, doi: https://doi.org/10.1016/j.ymssp.2026.113904.'
mla: Itner, Dominik, et al. “A Modified Levenberg–Marquardt Method for Estimating
the Elastic Material Parameters of Polymer Waveguides Using Residuals between
Autocorrelated Frequency Responses.” Mechanical Systems and Signal Processing,
vol. 247, 2026, p. 113904, doi:https://doi.org/10.1016/j.ymssp.2026.113904.
short: D. Itner, D. Dreiling, H. Gravenkamp, B. Henning, C. Birk, Mechanical Systems
and Signal Processing 247 (2026) 113904.
date_created: 2026-01-29T08:53:42Z
date_updated: 2026-02-02T12:44:47Z
department:
- _id: '49'
doi: https://doi.org/10.1016/j.ymssp.2026.113904
intvolume: ' 247'
keyword:
- Material parameter estimation
- Waveguide
- Nonlinear optimization
- Inverse problem
- Least squares
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sciencedirect.com/science/article/pii/S0888327026000610/pdfft?md5=16e8493b44527f4ab0a6d13f634a01c3&pid=1-s2.0-S0888327026000610-main.pdf
oa: '1'
page: '113904'
project:
- _id: '89'
name: Vollständige Bestimmung der akustischen Materialparameter von Polymeren
publication: Mechanical Systems and Signal Processing
publication_identifier:
issn:
- 0888-3270
publication_status: published
status: public
title: A modified Levenberg–Marquardt method for estimating the elastic material parameters
of polymer waveguides using residuals between autocorrelated frequency responses
type: journal_article
user_id: '32616'
volume: 247
year: '2026'
...
---
_id: '63435'
author:
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Michael
full_name: Winkler, Michael
id: '31496'
last_name: Winkler
citation:
ama: 'Claes L, Winkler M. Describing smooth small-data solutions to a quasilinear
hyperbolic-parabolic system by W 1,P energy analysis. Nonlinear Analysis: Real
World Applications. 2026;91:104580. doi:10.1016/j.nonrwa.2025.104580'
apa: 'Claes, L., & Winkler, M. (2026). Describing smooth small-data solutions
to a quasilinear hyperbolic-parabolic system by W 1,P energy analysis. Nonlinear
Analysis: Real World Applications, 91, 104580. https://doi.org/10.1016/j.nonrwa.2025.104580'
bibtex: '@article{Claes_Winkler_2026, title={Describing smooth small-data solutions
to a quasilinear hyperbolic-parabolic system by W 1,P energy analysis}, volume={91},
DOI={10.1016/j.nonrwa.2025.104580},
journal={Nonlinear Analysis: Real World Applications}, publisher={Elsevier BV},
author={Claes, Leander and Winkler, Michael}, year={2026}, pages={104580} }'
chicago: 'Claes, Leander, and Michael Winkler. “Describing Smooth Small-Data Solutions
to a Quasilinear Hyperbolic-Parabolic System by W 1,P Energy Analysis.” Nonlinear
Analysis: Real World Applications 91 (2026): 104580. https://doi.org/10.1016/j.nonrwa.2025.104580.'
ieee: 'L. Claes and M. Winkler, “Describing smooth small-data solutions to a quasilinear
hyperbolic-parabolic system by W 1,P energy analysis,” Nonlinear Analysis:
Real World Applications, vol. 91, p. 104580, 2026, doi: 10.1016/j.nonrwa.2025.104580.'
mla: 'Claes, Leander, and Michael Winkler. “Describing Smooth Small-Data Solutions
to a Quasilinear Hyperbolic-Parabolic System by W 1,P Energy Analysis.” Nonlinear
Analysis: Real World Applications, vol. 91, Elsevier BV, 2026, p. 104580,
doi:10.1016/j.nonrwa.2025.104580.'
short: 'L. Claes, M. Winkler, Nonlinear Analysis: Real World Applications 91 (2026)
104580.'
date_created: 2026-01-05T07:32:00Z
date_updated: 2026-01-05T07:40:49Z
department:
- _id: '49'
- _id: '90'
doi: 10.1016/j.nonrwa.2025.104580
intvolume: ' 91'
language:
- iso: eng
page: '104580'
project:
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
publication: 'Nonlinear Analysis: Real World Applications'
publication_identifier:
issn:
- 1468-1218
publisher: Elsevier BV
status: public
title: Describing smooth small-data solutions to a quasilinear hyperbolic-parabolic
system by W 1,P energy analysis
type: journal_article
user_id: '11829'
volume: 91
year: '2026'
...
---
_id: '65426'
abstract:
- lang: ger
text: In diesem Forschungsprojekt wurde ein Messverfahren zur Bestimmung akustischer
Materialparameter von Polymeren im Ultraschallfrequenzbereich entwickelt. Das
Verfahrens sollte, die üblichen standardisierten Prüfmethoden erweitern, die bislang
primär im quasistatischen oder niederfrequenten Bereich eingesetzt wurden. Im
Gegensatz zu bestehenden Verfahren wie dem Zeitstandversuch oder der Dynamisch
Mechanischen Analyse (DMA) nach [DIN6721] sollte die neue Methode eine nicht-invasive
Charakterisierung der (visko-)elastischen Materialparameter im Frequenzbereich
von 0,75 MHz bis 2,5 MHz ermöglichen. Das entwickelte Ultraschallmesssystem arbeitet
nach dem Puls Echo-Prinzip und kann eine räumlich segmentierte, ringförmige Anregung
erzeugen. Die Bestimmung der frequenzabhängigen Materialparameter geschieht hierbei
über ein inverses Verfahren. Die Ergebnisse des Projekts zeigen, dass die Segmentierung
der Anregung, die Geometrie der Probe sowie das Puls-Echo-Messprinzip die Messergebnisse
sowie die Sensitivität gegenüber Scherparametern wesentlich beeinflussen. Im Rahmen
des Projektes wurde auch eine statistische Auswertung des Optimierungsverfahrens
hinsichtlich transversal-isotroper Materialsymmetrie mit Rayleigh-Dämpfung durchgeführt.
Die Ergebnisse zeigen, dass das entwickelte Verfahren gute Konvergenzeigenschaften
aufweist und sich durch verbesserte Robustheit auszeichnet.
- lang: eng
text: This research project involved developing a measurement method to determine
the acoustic material parameters of polymers within the ultrasonic frequency range.
The aim of this method is to extend the range of standardised tests that operate
in the quasi-static or low-frequency range. In contrast to existing methods such
as the creep test or dynamic mechanical analysis according to [DIN6721], the developed
method is capable of non-invasive characterisation of the (visco-)elastic material
parameters in the frequency range of 0,75 MHz bis 2,5 MHz. The developed ultrasonic
measurement setup utilises the pulse-echo principle and can generate a spatially
segmented, ring-shaped excitation. The frequency-dependent material parameters
are determined using an inverse method. The final results of the project show
that the segmentation of the excitation, the geometry of the specimen and the
pulse-echo measurement principle have a significant influence on the measurement
results and the sensitivity to shear movements. As part of the project, a statistical
evaluation of the optimisation process was also carried out with regard to transversely
isotropic material symmetry with Rayleigh damping. The results show that the developed
process has good convergence properties and is characterised by improved robustness.
author:
- first_name: Dmitrij
full_name: Dreiling, Dmitrij
id: '32616'
last_name: Dreiling
- first_name: Dominik
full_name: Itner, Dominik
last_name: Itner
- first_name: Carolin
full_name: Birk, Carolin
last_name: Birk
- first_name: Hauke
full_name: Gravenkamp, Hauke
last_name: Gravenkamp
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: 'Dreiling D, Itner D, Birk C, Gravenkamp H, Henning B. Vollständige Bestimmung
der akustischen Materialparameter von Polymeren II. Hannover : Technische
Informationsbibliothek; 2026. doi:https://doi.org/10.34657/33602'
apa: 'Dreiling, D., Itner, D., Birk, C., Gravenkamp, H., & Henning, B. (2026).
Vollständige Bestimmung der akustischen Materialparameter von Polymeren II.
Hannover : Technische Informationsbibliothek. https://doi.org/10.34657/33602'
bibtex: '@book{Dreiling_Itner_Birk_Gravenkamp_Henning_2026, title={Vollständige
Bestimmung der akustischen Materialparameter von Polymeren II}, DOI={https://doi.org/10.34657/33602},
publisher={Hannover : Technische Informationsbibliothek}, author={Dreiling, Dmitrij
and Itner, Dominik and Birk, Carolin and Gravenkamp, Hauke and Henning, Bernd},
year={2026} }'
chicago: 'Dreiling, Dmitrij, Dominik Itner, Carolin Birk, Hauke Gravenkamp, and
Bernd Henning. Vollständige Bestimmung der akustischen Materialparameter von
Polymeren II. Hannover : Technische Informationsbibliothek, 2026. https://doi.org/10.34657/33602.'
ieee: 'D. Dreiling, D. Itner, C. Birk, H. Gravenkamp, and B. Henning, Vollständige
Bestimmung der akustischen Materialparameter von Polymeren II. Hannover :
Technische Informationsbibliothek, 2026.'
mla: 'Dreiling, Dmitrij, et al. Vollständige Bestimmung der akustischen Materialparameter
von Polymeren II. Hannover : Technische Informationsbibliothek, 2026, doi:https://doi.org/10.34657/33602.'
short: 'D. Dreiling, D. Itner, C. Birk, H. Gravenkamp, B. Henning, Vollständige
Bestimmung der akustischen Materialparameter von Polymeren II, Hannover : Technische
Informationsbibliothek, 2026.'
date_created: 2026-04-14T06:43:03Z
date_updated: 2026-04-17T07:18:16Z
department:
- _id: '49'
doi: https://doi.org/10.34657/33602
keyword:
- Materialcharakterisierung
- Polymer
- Inverses Problem
- Ultraschall
- Optimierung
language:
- iso: ger
license: https://creativecommons.org/licenses/by/3.0/
main_file_link:
- open_access: '1'
url: https://oa.tib.eu/renate/handle/123456789/34534
oa: '1'
page: '12'
project:
- _id: '89'
name: Vollständige Bestimmung der akustischen Materialparameter von Polymeren
publication_status: published
publisher: 'Hannover : Technische Informationsbibliothek'
report_number: '409779252'
status: public
title: Vollständige Bestimmung der akustischen Materialparameter von Polymeren II
type: report
user_id: '32616'
year: '2026'
...
---
_id: '65586'
author:
- first_name: Henning
full_name: Zeipert, Henning
id: '32580'
last_name: Zeipert
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Jonas
full_name: Hölscher, Jonas
id: '73952'
last_name: Hölscher
- first_name: Mareen
full_name: Wippermann, Mareen
id: '74624'
last_name: Wippermann
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: 'Zeipert H, Claes L, Hölscher J, Wippermann M, Henning B. An Approach for the
Efficient Solution of Eigenvalue-based Inverse Problems for the Material Characterisation
Using Guided Acoustic Waves. In: Deutsche Gesellschaft für Akustik e.V., ed. Fortschritte
Der Akustik - DAGA 2026. ; 2026:1566–1569. doi:10.71568/DAGA2026.043'
apa: Zeipert, H., Claes, L., Hölscher, J., Wippermann, M., & Henning, B. (2026).
An Approach for the Efficient Solution of Eigenvalue-based Inverse Problems for
the Material Characterisation Using Guided Acoustic Waves. In Deutsche Gesellschaft
für Akustik e.V. (Ed.), Fortschritte der Akustik - DAGA 2026 (pp. 1566–1569).
https://doi.org/10.71568/DAGA2026.043
bibtex: '@inproceedings{Zeipert_Claes_Hölscher_Wippermann_Henning_2026, place={Dresden},
title={An Approach for the Efficient Solution of Eigenvalue-based Inverse Problems
for the Material Characterisation Using Guided Acoustic Waves}, DOI={10.71568/DAGA2026.043},
booktitle={Fortschritte der Akustik - DAGA 2026}, author={Zeipert, Henning and
Claes, Leander and Hölscher, Jonas and Wippermann, Mareen and Henning, Bernd},
editor={Deutsche Gesellschaft für Akustik e.V.}, year={2026}, pages={1566–1569}
}'
chicago: Zeipert, Henning, Leander Claes, Jonas Hölscher, Mareen Wippermann, and
Bernd Henning. “An Approach for the Efficient Solution of Eigenvalue-Based Inverse
Problems for the Material Characterisation Using Guided Acoustic Waves.” In Fortschritte
Der Akustik - DAGA 2026, edited by Deutsche Gesellschaft für Akustik e.V.,
1566–1569. Dresden, 2026. https://doi.org/10.71568/DAGA2026.043.
ieee: 'H. Zeipert, L. Claes, J. Hölscher, M. Wippermann, and B. Henning, “An Approach
for the Efficient Solution of Eigenvalue-based Inverse Problems for the Material
Characterisation Using Guided Acoustic Waves,” in Fortschritte der Akustik
- DAGA 2026, 2026, pp. 1566–1569, doi: 10.71568/DAGA2026.043.'
mla: Zeipert, Henning, et al. “An Approach for the Efficient Solution of Eigenvalue-Based
Inverse Problems for the Material Characterisation Using Guided Acoustic Waves.”
Fortschritte Der Akustik - DAGA 2026, edited by Deutsche Gesellschaft für
Akustik e.V., 2026, pp. 1566–1569, doi:10.71568/DAGA2026.043.
short: 'H. Zeipert, L. Claes, J. Hölscher, M. Wippermann, B. Henning, in: Deutsche
Gesellschaft für Akustik e.V. (Ed.), Fortschritte Der Akustik - DAGA 2026, Dresden,
2026, pp. 1566–1569.'
corporate_editor:
- Deutsche Gesellschaft für Akustik e.V.
date_created: 2026-05-08T12:29:43Z
date_updated: 2026-05-08T12:32:54Z
department:
- _id: '49'
doi: 10.71568/DAGA2026.043
language:
- iso: eng
page: 1566–1569
place: Dresden
project:
- _id: '105'
name: Vermiedene Kreuzungen von Lamb-Wellenmoden in mehrlagigen Strukturen
publication: Fortschritte der Akustik - DAGA 2026
status: public
title: An Approach for the Efficient Solution of Eigenvalue-based Inverse Problems
for the Material Characterisation Using Guided Acoustic Waves
type: conference
user_id: '11829'
year: '2026'
...
---
_id: '65587'
author:
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
citation:
ama: 'Claes L. Simultaneous measurement of bulk and shear viscosity using guided
acoustic waves. In: Deutsche Gesellschaft für Akustik e.V., ed. Fortschritte
Der Akustik - DAGA 2026. ; 2026:1089–1092. doi:10.71568/DAGA2026.006'
apa: Claes, L. (2026). Simultaneous measurement of bulk and shear viscosity using
guided acoustic waves. In Deutsche Gesellschaft für Akustik e.V. (Ed.), Fortschritte
der Akustik - DAGA 2026 (pp. 1089–1092). https://doi.org/10.71568/DAGA2026.006
bibtex: '@inproceedings{Claes_2026, place={Dresden}, title={Simultaneous measurement
of bulk and shear viscosity using guided acoustic waves}, DOI={10.71568/DAGA2026.006},
booktitle={Fortschritte der Akustik - DAGA 2026}, author={Claes, Leander}, editor={Deutsche
Gesellschaft für Akustik e.V.}, year={2026}, pages={1089–1092} }'
chicago: Claes, Leander. “Simultaneous Measurement of Bulk and Shear Viscosity Using
Guided Acoustic Waves.” In Fortschritte Der Akustik - DAGA 2026, edited
by Deutsche Gesellschaft für Akustik e.V., 1089–1092. Dresden, 2026. https://doi.org/10.71568/DAGA2026.006.
ieee: 'L. Claes, “Simultaneous measurement of bulk and shear viscosity using guided
acoustic waves,” in Fortschritte der Akustik - DAGA 2026, 2026, pp. 1089–1092,
doi: 10.71568/DAGA2026.006.'
mla: Claes, Leander. “Simultaneous Measurement of Bulk and Shear Viscosity Using
Guided Acoustic Waves.” Fortschritte Der Akustik - DAGA 2026, edited by
Deutsche Gesellschaft für Akustik e.V., 2026, pp. 1089–1092, doi:10.71568/DAGA2026.006.
short: 'L. Claes, in: Deutsche Gesellschaft für Akustik e.V. (Ed.), Fortschritte
Der Akustik - DAGA 2026, Dresden, 2026, pp. 1089–1092.'
corporate_editor:
- Deutsche Gesellschaft für Akustik e.V.
date_created: 2026-05-08T12:30:37Z
date_updated: 2026-05-08T12:33:01Z
department:
- _id: '49'
doi: 10.71568/DAGA2026.006
language:
- iso: eng
page: 1089–1092
place: Dresden
publication: Fortschritte der Akustik - DAGA 2026
status: public
title: Simultaneous measurement of bulk and shear viscosity using guided acoustic
waves
type: conference
user_id: '11829'
year: '2026'
...
---
_id: '65625'
author:
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- first_name: Jonas
full_name: Hölscher, Jonas
id: '73952'
last_name: Hölscher
- first_name: Michael B. K.
full_name: Siegmund, Michael B. K.
last_name: Siegmund
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: 'Friesen O, Hölscher J, Siegmund MBK, Claes L, Henning B. Experimental and
Numerical Investigation of Jump Phenomena in the Frequency Response of Piezoelectric
Systems. In: ; 2026.'
apa: Friesen, O., Hölscher, J., Siegmund, M. B. K., Claes, L., & Henning, B.
(2026). Experimental and Numerical Investigation of Jump Phenomena in the Frequency
Response of Piezoelectric Systems.
bibtex: '@inproceedings{Friesen_Hölscher_Siegmund_Claes_Henning_2026, place={96th
Annual Meeting of the International Association of Applied Mathematics and Mechanics
(GAMM)}, title={Experimental and Numerical Investigation of Jump Phenomena in
the Frequency Response of Piezoelectric Systems}, author={Friesen, Olga and Hölscher,
Jonas and Siegmund, Michael B. K. and Claes, Leander and Henning, Bernd}, year={2026}
}'
chicago: Friesen, Olga, Jonas Hölscher, Michael B. K. Siegmund, Leander Claes, and
Bernd Henning. “Experimental and Numerical Investigation of Jump Phenomena in
the Frequency Response of Piezoelectric Systems.” 96th Annual Meeting of the International
Association of Applied Mathematics and Mechanics (GAMM), 2026.
ieee: O. Friesen, J. Hölscher, M. B. K. Siegmund, L. Claes, and B. Henning, “Experimental
and Numerical Investigation of Jump Phenomena in the Frequency Response of Piezoelectric
Systems,” 2026.
mla: Friesen, Olga, et al. Experimental and Numerical Investigation of Jump Phenomena
in the Frequency Response of Piezoelectric Systems. 2026.
short: 'O. Friesen, J. Hölscher, M.B.K. Siegmund, L. Claes, B. Henning, in: 96th
Annual Meeting of the International Association of Applied Mathematics and Mechanics
(GAMM), 2026.'
date_created: 2026-05-13T14:24:34Z
date_updated: 2026-05-13T14:25:54Z
department:
- _id: '49'
language:
- iso: eng
place: 96th Annual Meeting of the International Association of Applied Mathematics
and Mechanics (GAMM)
project:
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
status: public
title: Experimental and Numerical Investigation of Jump Phenomena in the Frequency
Response of Piezoelectric Systems
type: conference_abstract
user_id: '44026'
year: '2026'
...
---
_id: '65242'
abstract:
- lang: eng
text: With the growing demand for lightweight solutions to reduce emissions, especially
in the transportation, automotive and aerospace sectors, recyclable, continuous
fiber-reinforced plastic composite laminates with a thermoplastic matrix are of
rising interest. To achieve their maximum mechanical properties, the fiber-matrix
adhesion (FMA) is critical. In this work, continuous fiber-reinforced thermoplastic
laminates (CFRTPL) with a polypropylene (PP) matrix and twill woven glass fiber
fabrics are produced by film stacking. The films used contain different amounts
of maleic-anhydride-grafted PP (MA-g-PP) as a coupling agent to produce CFRTPL
of different mechanical strengths. To analyze the FMA, the CFRTPL are subjected
to Charpy-impact and tensile tests. Additionally, single fiber pull-out tests
(SFPT) are conducted to further investigate the effect of MA-g-PP on the FMA.
The results of the SFPT show an improvement in apparent interfacial shear strength
(AIFSS) when the MA-g-PP content is increased, which can be attributed to an increase
in FMA. However, the research shows that MA-g-PP has a low impact on the mechanical
properties if the force is applied parallel to the warp and weft threads during
tensile testing and the results of the Charpy-impact testing suffer from embrittlement
of the matrix material. Subsequently, the results of this study are compared to
three-point flexural tests conducted in a previous study. It can be concluded
that tensile and impact tests are not suited to investigate FMA on a macroscopic
scale, while SFPT and flexural tests provide a better alternative.
author:
- first_name: Elmar
full_name: Moritzer, Elmar
id: '20531'
last_name: Moritzer
- first_name: Philipp
full_name: Brandes, Philipp
id: '70091'
last_name: Brandes
orcid: 0009-0005-9707-0885
- first_name: Maurice
full_name: Wittler, Maurice
id: '76071'
last_name: Wittler
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Mareen
full_name: Wippermann, Mareen
id: '74624'
last_name: Wippermann
- first_name: Markus
full_name: Haag, Markus
last_name: Haag
- first_name: Thomas
full_name: Gries, Thomas
last_name: Gries
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: Moritzer E, Brandes P, Wittler M, et al. Fiber-matrix adhesion in glass fiber
reinforced thermoplastic composite laminates and its effect on mechanical properties.
International Polymer Processing. Published online 2026. doi:10.1515/ipp-2025-0077
apa: Moritzer, E., Brandes, P., Wittler, M., Claes, L., Wippermann, M., Haag, M.,
Gries, T., & Henning, B. (2026). Fiber-matrix adhesion in glass fiber reinforced
thermoplastic composite laminates and its effect on mechanical properties. International
Polymer Processing. https://doi.org/10.1515/ipp-2025-0077
bibtex: '@article{Moritzer_Brandes_Wittler_Claes_Wippermann_Haag_Gries_Henning_2026,
title={Fiber-matrix adhesion in glass fiber reinforced thermoplastic composite
laminates and its effect on mechanical properties}, DOI={10.1515/ipp-2025-0077},
journal={International Polymer Processing}, publisher={Walter de Gruyter GmbH},
author={Moritzer, Elmar and Brandes, Philipp and Wittler, Maurice and Claes, Leander
and Wippermann, Mareen and Haag, Markus and Gries, Thomas and Henning, Bernd},
year={2026} }'
chicago: Moritzer, Elmar, Philipp Brandes, Maurice Wittler, Leander Claes, Mareen
Wippermann, Markus Haag, Thomas Gries, and Bernd Henning. “Fiber-Matrix Adhesion
in Glass Fiber Reinforced Thermoplastic Composite Laminates and Its Effect on
Mechanical Properties.” International Polymer Processing, 2026. https://doi.org/10.1515/ipp-2025-0077.
ieee: 'E. Moritzer et al., “Fiber-matrix adhesion in glass fiber reinforced
thermoplastic composite laminates and its effect on mechanical properties,” International
Polymer Processing, 2026, doi: 10.1515/ipp-2025-0077.'
mla: Moritzer, Elmar, et al. “Fiber-Matrix Adhesion in Glass Fiber Reinforced Thermoplastic
Composite Laminates and Its Effect on Mechanical Properties.” International
Polymer Processing, Walter de Gruyter GmbH, 2026, doi:10.1515/ipp-2025-0077.
short: E. Moritzer, P. Brandes, M. Wittler, L. Claes, M. Wippermann, M. Haag, T.
Gries, B. Henning, International Polymer Processing (2026).
date_created: 2026-03-30T14:14:33Z
date_updated: 2026-05-18T13:06:11Z
department:
- _id: '9'
- _id: '321'
- _id: '367'
- _id: '34'
- _id: '49'
doi: 10.1515/ipp-2025-0077
language:
- iso: eng
project:
- _id: '157'
grant_number: '495847374'
name: 'FaMOUS: Ein ultraschallbasiertes Messverfahren unter Berücksichtigung viskoelastischer
Eigenschaften zur Charakterisierung der Faser-Matrix-Haftung bei Organoblechen
sowie deren realitätsnahe Modellierung'
publication: International Polymer Processing
publication_identifier:
issn:
- 0930-777X
- 2195-8602
publication_status: published
publisher: Walter de Gruyter GmbH
quality_controlled: '1'
status: public
title: Fiber-matrix adhesion in glass fiber reinforced thermoplastic composite laminates
and its effect on mechanical properties
type: journal_article
user_id: '11829'
year: '2026'
...
---
_id: '65785'
abstract:
- lang: eng
text: Simulation-based design of high-power ultrasonic systems depends on the accurate
modelling of the electromechanical behaviour of piezoceramic materials. In practical
transducer applications, the relevant operating points are influenced by mechanical
preload and heating, both of which give rise to changes in the elastic, dielectric,
and piezoelectric material properties. Material parameters identified under idealised,
unloaded conditions are therefore insufficient to represent piezoceramic material
behaviour under realistic operating conditions. To overcome this limitation, experimental
setups are developed that enable the measurement of electrical impedance spectra
under controlled thermal and mechanical conditions. The acquired impedance data
are used in an inverse identification procedure, in which the behaviour of a finite
element forward model is iteratively fitted to the measurements using a block
coordinate descent optimisation strategy guided by a sensitivity analysis. This
yields effective linear material parameters as a function of temperature and mechanical
stress at varying operating points. The identified temperature-dependent parameters,
for instance, can be employed in a coupled thermo-electromechanical simulation
framework to predict the temperature-dependent material behaviour during operation.
The linear identification based on varying operation points provides an initial
approximation of the nonlinear material response, establishing a basis for the
development of corresponding nonlinear material models.
author:
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
orcid: 0009-0007-5598-9484
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Jonas
full_name: Hölscher, Jonas
id: '73952'
last_name: Hölscher
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
- 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: Raphael
full_name: Kuess, Raphael
last_name: Kuess
- first_name: Andrea
full_name: Walther, Andrea
last_name: Walther
- first_name: Carsten
full_name: Spieker, Carsten
id: '67587'
last_name: Spieker
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
citation:
ama: Friesen O, Claes L, Hölscher J, et al. Measurement of multiphysical material
parameters of piezoceramic components for high-power ultrasonic applications.
tm - Technisches Messen. Published online 2026. doi:10.1515/teme-2026-0042
apa: Friesen, O., Claes, L., Hölscher, J., Henning, B., Scheidemann, C., Hemsel,
T., Kuess, R., Walther, A., Spieker, C., & Förstner, J. (2026). Measurement
of multiphysical material parameters of piezoceramic components for high-power
ultrasonic applications. Tm - Technisches Messen. https://doi.org/10.1515/teme-2026-0042
bibtex: '@article{Friesen_Claes_Hölscher_Henning_Scheidemann_Hemsel_Kuess_Walther_Spieker_Förstner_2026,
title={Measurement of multiphysical material parameters of piezoceramic components
for high-power ultrasonic applications}, DOI={10.1515/teme-2026-0042},
journal={tm - Technisches Messen}, publisher={Walter de Gruyter GmbH}, author={Friesen,
Olga and Claes, Leander and Hölscher, Jonas and Henning, Bernd and Scheidemann,
Claus and Hemsel, Tobias and Kuess, Raphael and Walther, Andrea and Spieker, Carsten
and Förstner, Jens}, year={2026} }'
chicago: Friesen, Olga, Leander Claes, Jonas Hölscher, Bernd Henning, Claus Scheidemann,
Tobias Hemsel, Raphael Kuess, Andrea Walther, Carsten Spieker, and Jens Förstner.
“Measurement of Multiphysical Material Parameters of Piezoceramic Components for High-Power
Ultrasonic Applications.” Tm - Technisches Messen, 2026. https://doi.org/10.1515/teme-2026-0042.
ieee: 'O. Friesen et al., “Measurement of multiphysical material parameters
of piezoceramic components for high-power ultrasonic applications,” tm - Technisches
Messen, 2026, doi: 10.1515/teme-2026-0042.'
mla: Friesen, Olga, et al. “Measurement of Multiphysical Material Parameters of Piezoceramic
Components for High-Power Ultrasonic Applications.” Tm - Technisches Messen,
Walter de Gruyter GmbH, 2026, doi:10.1515/teme-2026-0042.
short: O. Friesen, L. Claes, J. Hölscher, B. Henning, C. Scheidemann, T. Hemsel,
R. Kuess, A. Walther, C. Spieker, J. Förstner, Tm - Technisches Messen (2026).
date_created: 2026-06-08T05:44:09Z
date_updated: 2026-06-08T17:54:45Z
department:
- _id: '49'
doi: 10.1515/teme-2026-0042
keyword:
- tet_topic_piezo
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
project:
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
publication: tm - Technisches Messen
publication_identifier:
issn:
- 0171-8096
- 2196-7113
publication_status: published
publisher: Walter de Gruyter GmbH
status: public
title: Measurement of multiphysical material parameters of piezoceramic components
for high-power ultrasonic applications
type: journal_article
user_id: '158'
year: '2026'
...
---
_id: '66060'
author:
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Michael
full_name: Winkler, Michael
id: '31496'
last_name: Winkler
citation:
ama: Claes L, Winkler M. Local strong solutions in a quasilinear Moore-Gibson-Thompson
type model for thermoviscoelastic evolution in a standard linear solid. Nonlinear
Differential Equations and Applications NoDEA. 2026;33(4). doi:10.1007/s00030-026-01239-7
apa: Claes, L., & Winkler, M. (2026). Local strong solutions in a quasilinear
Moore-Gibson-Thompson type model for thermoviscoelastic evolution in a standard
linear solid. Nonlinear Differential Equations and Applications NoDEA,
33(4). https://doi.org/10.1007/s00030-026-01239-7
bibtex: '@article{Claes_Winkler_2026, title={Local strong solutions in a quasilinear
Moore-Gibson-Thompson type model for thermoviscoelastic evolution in a standard
linear solid}, volume={33}, DOI={10.1007/s00030-026-01239-7},
number={4}, journal={Nonlinear Differential Equations and Applications NoDEA},
publisher={Springer Science and Business Media LLC}, author={Claes, Leander and
Winkler, Michael}, year={2026} }'
chicago: Claes, Leander, and Michael Winkler. “Local Strong Solutions in a Quasilinear
Moore-Gibson-Thompson Type Model for Thermoviscoelastic Evolution in a Standard
Linear Solid.” Nonlinear Differential Equations and Applications NoDEA
33, no. 4 (2026). https://doi.org/10.1007/s00030-026-01239-7.
ieee: 'L. Claes and M. Winkler, “Local strong solutions in a quasilinear Moore-Gibson-Thompson
type model for thermoviscoelastic evolution in a standard linear solid,” Nonlinear
Differential Equations and Applications NoDEA, vol. 33, no. 4, 2026, doi:
10.1007/s00030-026-01239-7.'
mla: Claes, Leander, and Michael Winkler. “Local Strong Solutions in a Quasilinear
Moore-Gibson-Thompson Type Model for Thermoviscoelastic Evolution in a Standard
Linear Solid.” Nonlinear Differential Equations and Applications NoDEA,
vol. 33, no. 4, Springer Science and Business Media LLC, 2026, doi:10.1007/s00030-026-01239-7.
short: L. Claes, M. Winkler, Nonlinear Differential Equations and Applications NoDEA
33 (2026).
date_created: 2026-06-26T09:21:21Z
date_updated: 2026-06-26T09:23:14Z
department:
- _id: '49'
- _id: '90'
doi: 10.1007/s00030-026-01239-7
intvolume: ' 33'
issue: '4'
language:
- iso: eng
project:
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
publication: Nonlinear Differential Equations and Applications NoDEA
publication_identifier:
issn:
- 1420-9004
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Local strong solutions in a quasilinear Moore-Gibson-Thompson type model for
thermoviscoelastic evolution in a standard linear solid
type: journal_article
user_id: '11829'
volume: 33
year: '2026'
...
---
_id: '66382'
author:
- first_name: Mareen
full_name: Wippermann, Mareen
id: '74624'
last_name: Wippermann
- first_name: Marlene Ingeborg
full_name: Rickert, Marlene Ingeborg
last_name: Rickert
- first_name: Finn
full_name: Gebauer, Finn
last_name: Gebauer
- first_name: Henning
full_name: Zeipert, Henning
id: '32580'
last_name: Zeipert
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
citation:
ama: Wippermann M, Rickert MI, Gebauer F, Zeipert H, Claes L. Characterisation
of Internal Periodic Structures in Additively Manufactured Components Using Guided
Acoustic Waves.; 2026.
apa: Wippermann, M., Rickert, M. I., Gebauer, F., Zeipert, H., & Claes, L. (2026).
Characterisation of Internal Periodic Structures in Additively Manufactured
Components Using Guided Acoustic Waves.
bibtex: '@book{Wippermann_Rickert_Gebauer_Zeipert_Claes_2026, place={Guided Ultrasonic
Waves: Emerging Methods (GUWEM) Workshop, Ottrtott, France}, series={Guided Ultrasonic
Waves: Emerging Methods (GUWEM) Workshop}, title={Characterisation of Internal
Periodic Structures in Additively Manufactured Components Using Guided Acoustic
Waves}, author={Wippermann, Mareen and Rickert, Marlene Ingeborg and Gebauer,
Finn and Zeipert, Henning and Claes, Leander}, year={2026}, collection={Guided
Ultrasonic Waves: Emerging Methods (GUWEM) Workshop} }'
chicago: 'Wippermann, Mareen, Marlene Ingeborg Rickert, Finn Gebauer, Henning Zeipert,
and Leander Claes. Characterisation of Internal Periodic Structures in Additively
Manufactured Components Using Guided Acoustic Waves. Guided Ultrasonic Waves:
Emerging Methods (GUWEM) Workshop. Guided Ultrasonic Waves: Emerging Methods (GUWEM)
Workshop, Ottrtott, France, 2026.'
ieee: 'M. Wippermann, M. I. Rickert, F. Gebauer, H. Zeipert, and L. Claes, Characterisation
of Internal Periodic Structures in Additively Manufactured Components Using Guided
Acoustic Waves. Guided Ultrasonic Waves: Emerging Methods (GUWEM) Workshop,
Ottrtott, France, 2026.'
mla: Wippermann, Mareen, et al. Characterisation of Internal Periodic Structures
in Additively Manufactured Components Using Guided Acoustic Waves. 2026.
short: 'M. Wippermann, M.I. Rickert, F. Gebauer, H. Zeipert, L. Claes, Characterisation
of Internal Periodic Structures in Additively Manufactured Components Using Guided
Acoustic Waves, Guided Ultrasonic Waves: Emerging Methods (GUWEM) Workshop, Ottrtott,
France, 2026.'
date_created: 2026-07-08T12:26:49Z
date_updated: 2026-07-08T12:29:17Z
department:
- _id: '49'
language:
- iso: eng
place: 'Guided Ultrasonic Waves: Emerging Methods (GUWEM) Workshop, Ottrtott, France'
series_title: 'Guided Ultrasonic Waves: Emerging Methods (GUWEM) Workshop'
status: public
title: Characterisation of Internal Periodic Structures in Additively Manufactured
Components Using Guided Acoustic Waves
type: misc
user_id: '74624'
year: '2026'
...
---
_id: '66381'
author:
- first_name: Mareen
full_name: Wippermann, Mareen
id: '74624'
last_name: Wippermann
- first_name: Marlene Ingeborg
full_name: Rickert, Marlene Ingeborg
last_name: Rickert
- first_name: Finn
full_name: Gebauer, Finn
last_name: Gebauer
citation:
ama: Wippermann M, Rickert MI, Gebauer F. Phononische Kristallographie Mittels
Geführter Akustischer Wellen.; 2026.
apa: Wippermann, M., Rickert, M. I., & Gebauer, F. (2026). Phononische Kristallographie
mittels geführter akustischer Wellen.
bibtex: '@book{Wippermann_Rickert_Gebauer_2026, place={Workshop “Messtechnische
Anwendungen von Ultraschall”, Drübeck}, title={Phononische Kristallographie mittels
geführter akustischer Wellen}, author={Wippermann, Mareen and Rickert, Marlene
Ingeborg and Gebauer, Finn}, year={2026} }'
chicago: Wippermann, Mareen, Marlene Ingeborg Rickert, and Finn Gebauer. Phononische
Kristallographie Mittels Geführter Akustischer Wellen. Workshop “Messtechnische
Anwendungen von Ultraschall”, Drübeck, 2026.
ieee: M. Wippermann, M. I. Rickert, and F. Gebauer, Phononische Kristallographie
mittels geführter akustischer Wellen. Workshop “Messtechnische Anwendungen
von Ultraschall”, Drübeck, 2026.
mla: Wippermann, Mareen, et al. Phononische Kristallographie Mittels Geführter
Akustischer Wellen. 2026.
short: M. Wippermann, M.I. Rickert, F. Gebauer, Phononische Kristallographie Mittels
Geführter Akustischer Wellen, Workshop “Messtechnische Anwendungen von Ultraschall”,
Drübeck, 2026.
date_created: 2026-07-08T12:25:00Z
date_updated: 2026-07-08T12:29:14Z
department:
- _id: '49'
language:
- iso: eng
place: Workshop "Messtechnische Anwendungen von Ultraschall", Drübeck
status: public
title: Phononische Kristallographie mittels geführter akustischer Wellen
type: misc
user_id: '74624'
year: '2026'
...
---
_id: '66436'
author:
- first_name: Karl
full_name: Dören, Karl
last_name: Dören
- first_name: Tim
full_name: Hetkämper, Tim
id: '38123'
last_name: Hetkämper
citation:
ama: Dören K, Hetkämper T. Visualisierung von Schallausbreitungsphänomenen Mittels
Schlierentechnik.; 2026.
apa: Dören, K., & Hetkämper, T. (2026). Visualisierung von Schallausbreitungsphänomenen
mittels Schlierentechnik.
bibtex: '@book{Dören_Hetkämper_2026, place={Workshop “Messtechnische Anwendungen
von Ultraschall”, Drübeck}, title={Visualisierung von Schallausbreitungsphänomenen
mittels Schlierentechnik}, author={Dören, Karl and Hetkämper, Tim}, year={2026}
}'
chicago: Dören, Karl, and Tim Hetkämper. Visualisierung von Schallausbreitungsphänomenen
Mittels Schlierentechnik. Workshop “Messtechnische Anwendungen von Ultraschall”,
Drübeck, 2026.
ieee: K. Dören and T. Hetkämper, Visualisierung von Schallausbreitungsphänomenen
mittels Schlierentechnik. Workshop “Messtechnische Anwendungen von Ultraschall”,
Drübeck, 2026.
mla: Dören, Karl, and Tim Hetkämper. Visualisierung von Schallausbreitungsphänomenen
Mittels Schlierentechnik. 2026.
short: K. Dören, T. Hetkämper, Visualisierung von Schallausbreitungsphänomenen Mittels
Schlierentechnik, Workshop “Messtechnische Anwendungen von Ultraschall”, Drübeck,
2026.
date_created: 2026-07-10T09:13:17Z
date_updated: 2026-07-10T09:13:22Z
department:
- _id: '49'
language:
- iso: eng
place: Workshop "Messtechnische Anwendungen von Ultraschall", Drübeck
status: public
title: Visualisierung von Schallausbreitungsphänomenen mittels Schlierentechnik
type: misc
user_id: '74624'
year: '2026'
...
---
_id: '66434'
author:
- first_name: Jonas
full_name: Hölscher, Jonas
id: '73952'
last_name: Hölscher
citation:
ama: Hölscher J. Effiziente Simulation Nichtlinearer, Elastodynamischer Prozesse.;
2026.
apa: Hölscher, J. (2026). Effiziente Simulation nichtlinearer, elastodynamischer
Prozesse.
bibtex: '@book{Hölscher_2026, place={Workshop “Messtechnische Anwendungen von Ultraschall”,
Drübeck}, title={Effiziente Simulation nichtlinearer, elastodynamischer Prozesse},
author={Hölscher, Jonas}, year={2026} }'
chicago: Hölscher, Jonas. Effiziente Simulation Nichtlinearer, Elastodynamischer
Prozesse. Workshop “Messtechnische Anwendungen von Ultraschall”, Drübeck,
2026.
ieee: J. Hölscher, Effiziente Simulation nichtlinearer, elastodynamischer Prozesse.
Workshop “Messtechnische Anwendungen von Ultraschall”, Drübeck, 2026.
mla: Hölscher, Jonas. Effiziente Simulation Nichtlinearer, Elastodynamischer
Prozesse. 2026.
short: J. Hölscher, Effiziente Simulation Nichtlinearer, Elastodynamischer Prozesse,
Workshop “Messtechnische Anwendungen von Ultraschall”, Drübeck, 2026.
date_created: 2026-07-10T09:11:43Z
date_updated: 2026-07-10T09:12:00Z
department:
- _id: '49'
language:
- iso: eng
place: Workshop "Messtechnische Anwendungen von Ultraschall", Drübeck
status: public
title: Effiziente Simulation nichtlinearer, elastodynamischer Prozesse
type: misc
user_id: '74624'
year: '2026'
...
---
_id: '66604'
author:
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
orcid: 0009-0007-5598-9484
- first_name: Jonas
full_name: Hölscher, Jonas
id: '73952'
last_name: Hölscher
- first_name: Carsten
full_name: Spieker, Carsten
id: '67587'
last_name: Spieker
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
citation:
ama: 'Friesen O, Hölscher J, Spieker C, Förstner J, Claes L. Quantitative Modelling
of Dynamic Nonlinearity in Piezoelectric Components. In: ; 2026.'
apa: Friesen, O., Hölscher, J., Spieker, C., Förstner, J., & Claes, L. (2026).
Quantitative Modelling of Dynamic Nonlinearity in Piezoelectric Components.
WCCM-ECCOMAS 2026, München.
bibtex: '@inproceedings{Friesen_Hölscher_Spieker_Förstner_Claes_2026, title={Quantitative
Modelling of Dynamic Nonlinearity in Piezoelectric Components}, author={Friesen,
Olga and Hölscher, Jonas and Spieker, Carsten and Förstner, Jens and Claes, Leander},
year={2026} }'
chicago: Friesen, Olga, Jonas Hölscher, Carsten Spieker, Jens Förstner, and Leander
Claes. “Quantitative Modelling of Dynamic Nonlinearity in Piezoelectric Components,”
2026.
ieee: O. Friesen, J. Hölscher, C. Spieker, J. Förstner, and L. Claes, “Quantitative
Modelling of Dynamic Nonlinearity in Piezoelectric Components,” presented at the
WCCM-ECCOMAS 2026, München, 2026.
mla: Friesen, Olga, et al. Quantitative Modelling of Dynamic Nonlinearity in
Piezoelectric Components. 2026.
short: 'O. Friesen, J. Hölscher, C. Spieker, J. Förstner, L. Claes, in: 2026.'
conference:
end_date: 2026-07-24
location: München
name: WCCM-ECCOMAS 2026
start_date: 2026-07-19
date_created: 2026-07-27T15:07:31Z
date_updated: 2026-07-27T15:08:16Z
department:
- _id: '49'
language:
- iso: eng
project:
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
status: public
title: Quantitative Modelling of Dynamic Nonlinearity in Piezoelectric Components
type: conference_abstract
user_id: '44026'
year: '2026'
...
---
_id: '59683'
abstract:
- lang: eng
text: "Woven fibre-reinforced polymers are used in a variety of application, especially
where a low mass to stiffness ratio is required. Of paramount importance for the
tailored mechanical properties these composite materials exhibit is the type and
geometry of the fibre weave. Especially continuous fibre-reinforced thermoplastic
composites are fabricated as laminates and subsequently exposed to forming processes
which alter the geometry of the fibres unit cell and thus the local mechanical
properties of the material. An approach utilising broadband ultrasonic waves is
proposed to non-destructively determine the geometry of the unit cell of the weave.\r\n\r\nThe
dispersive behaviour of woven fibre-reinforced sheets is described in accordance
with the Flouquet-Bloch theorem as a phononic crystal. In order to develop a model
for a description of these periodically structured waveguides, the smallest repeating
unit of the wave is modelled with periodic boundary conditions. The resulting
dispersion diagram exhibits similarities to that of a homogeneous plate, but additionally
displays a periodicity in the wavenumber regime, which correspond with the size
of the unit cell. Experimental studies of the dispersive behaviour of acoustic
waves in woven fibre-reinforced samples also show a periodicity in the wavenumber
regime, enabling a measurement procedure of the unit cell geometry."
author:
- first_name: Mareen
full_name: Wippermann, Mareen
id: '74624'
last_name: Wippermann
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Philipp
full_name: Brandes, Philipp
id: '70091'
last_name: Brandes
- first_name: Elmar
full_name: Moritzer, Elmar
id: '20531'
last_name: Moritzer
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: 'Wippermann M, Claes L, Brandes P, Moritzer E, Henning B. Determination of
the unit cell geometry in fibre-reinforced polymer sheets using guided acoustic
waves. In: ; 2025. doi:10.71568/DASDAGA2025.116'
apa: Wippermann, M., Claes, L., Brandes, P., Moritzer, E., & Henning, B. (2025).
Determination of the unit cell geometry in fibre-reinforced polymer sheets
using guided acoustic waves. DAS | DAGA 2025 - 51st Annual Meeting on Acoustics,
Copenhagen. https://doi.org/10.71568/DASDAGA2025.116
bibtex: '@inproceedings{Wippermann_Claes_Brandes_Moritzer_Henning_2025, title={Determination
of the unit cell geometry in fibre-reinforced polymer sheets using guided acoustic
waves}, DOI={10.71568/DASDAGA2025.116},
author={Wippermann, Mareen and Claes, Leander and Brandes, Philipp and Moritzer,
Elmar and Henning, Bernd}, year={2025} }'
chicago: Wippermann, Mareen, Leander Claes, Philipp Brandes, Elmar Moritzer, and
Bernd Henning. “Determination of the Unit Cell Geometry in Fibre-Reinforced Polymer
Sheets Using Guided Acoustic Waves,” 2025. https://doi.org/10.71568/DASDAGA2025.116.
ieee: 'M. Wippermann, L. Claes, P. Brandes, E. Moritzer, and B. Henning, “Determination
of the unit cell geometry in fibre-reinforced polymer sheets using guided acoustic
waves,” presented at the DAS | DAGA 2025 - 51st Annual Meeting on Acoustics, Copenhagen,
2025, doi: 10.71568/DASDAGA2025.116.'
mla: Wippermann, Mareen, et al. Determination of the Unit Cell Geometry in Fibre-Reinforced
Polymer Sheets Using Guided Acoustic Waves. 2025, doi:10.71568/DASDAGA2025.116.
short: 'M. Wippermann, L. Claes, P. Brandes, E. Moritzer, B. Henning, in: 2025.'
conference:
end_date: 2025-03-20
location: Copenhagen
name: DAS | DAGA 2025 - 51st Annual Meeting on Acoustics
start_date: 2025-03-17
date_created: 2025-04-25T06:46:31Z
date_updated: 2025-04-25T08:58:02Z
department:
- _id: '49'
- _id: '147'
doi: 10.71568/DASDAGA2025.116
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
project:
- _id: '157'
grant_number: '495847374'
name: 'FaMOUS: Ein ultraschallbasiertes Messverfahren unter Berücksichtigung viskoelastischer
Eigenschaften zur Charakterisierung der Faser-Matrix-Haftung bei Organoblechen
sowie deren realitätsnahe Modellierung'
status: public
title: Determination of the unit cell geometry in fibre-reinforced polymer sheets
using guided acoustic waves
type: conference
user_id: '11829'
year: '2025'
...
---
_id: '59688'
author:
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Henning
full_name: Zeipert, Henning
id: '32580'
last_name: Zeipert
- first_name: Philipp
full_name: Brandes, Philipp
id: '70091'
last_name: Brandes
- first_name: Elmar
full_name: Moritzer, Elmar
id: '20531'
last_name: Moritzer
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: 'Claes L, Zeipert H, Brandes P, Moritzer E, Henning B. Assessment of Fibre-Matrix
Adhesion in Reinforced Polymers by Modal Damping of Guided Acoustic Waves. In:
; 2025. doi:10.71568/DASDAGA2025.052'
apa: Claes, L., Zeipert, H., Brandes, P., Moritzer, E., & Henning, B. (2025).
Assessment of Fibre-Matrix Adhesion in Reinforced Polymers by Modal Damping
of Guided Acoustic Waves. DAS | DAGA 2025 - 51st Annual Meeting on Acoustics,
Copenhagen. https://doi.org/10.71568/DASDAGA2025.052
bibtex: '@inproceedings{Claes_Zeipert_Brandes_Moritzer_Henning_2025, title={Assessment
of Fibre-Matrix Adhesion in Reinforced Polymers by Modal Damping of Guided Acoustic
Waves}, DOI={10.71568/DASDAGA2025.052},
author={Claes, Leander and Zeipert, Henning and Brandes, Philipp and Moritzer,
Elmar and Henning, Bernd}, year={2025} }'
chicago: Claes, Leander, Henning Zeipert, Philipp Brandes, Elmar Moritzer, and Bernd
Henning. “Assessment of Fibre-Matrix Adhesion in Reinforced Polymers by Modal
Damping of Guided Acoustic Waves,” 2025. https://doi.org/10.71568/DASDAGA2025.052.
ieee: 'L. Claes, H. Zeipert, P. Brandes, E. Moritzer, and B. Henning, “Assessment
of Fibre-Matrix Adhesion in Reinforced Polymers by Modal Damping of Guided Acoustic
Waves,” presented at the DAS | DAGA 2025 - 51st Annual Meeting on Acoustics, Copenhagen,
2025, doi: 10.71568/DASDAGA2025.052.'
mla: Claes, Leander, et al. Assessment of Fibre-Matrix Adhesion in Reinforced
Polymers by Modal Damping of Guided Acoustic Waves. 2025, doi:10.71568/DASDAGA2025.052.
short: 'L. Claes, H. Zeipert, P. Brandes, E. Moritzer, B. Henning, in: 2025.'
conference:
end_date: 2025-03-20
location: Copenhagen
name: DAS | DAGA 2025 - 51st Annual Meeting on Acoustics
start_date: 2025-03-17
date_created: 2025-04-25T08:48:10Z
date_updated: 2025-04-25T08:50:11Z
department:
- _id: '49'
- _id: '147'
doi: 10.71568/DASDAGA2025.052
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
project:
- _id: '157'
grant_number: '495847374'
name: 'FaMOUS: Ein ultraschallbasiertes Messverfahren unter Berücksichtigung viskoelastischer
Eigenschaften zur Charakterisierung der Faser-Matrix-Haftung bei Organoblechen
sowie deren realitätsnahe Modellierung'
status: public
title: Assessment of Fibre-Matrix Adhesion in Reinforced Polymers by Modal Damping
of Guided Acoustic Waves
type: conference
user_id: '11829'
year: '2025'
...
---
_id: '59995'
abstract:
- lang: eng
text: "Abstract\r\n Ultrasonic transmission
measurements can be used for material characterization, as the propagation time
of sound waves and thus their velocity depends on the elastic material parameters.
Measurement results for the elastic material parameters are acquired non-destructively
using ultrasonic transmission measurements of hollow cylindrical polymer specimens.
To determine the material parameters, an inverse approach is used comparing measurements
with simulated data. Previous studies show that the procedure exhibits low sensitivity
with respect to the shear parameters of the material. In order to increase the
sensitivity, we propose to apply a spatially annular excitation on the base of
the specimen. As a measure to analyse the sensitivities with respect to all parameters
and their linear independence, we observe the volume of the parallelotope of the
sensitivity vectors. Here, a scaled boundary finite element formulation of wave
propagation in the specimen is expanded to yield derivative information directly,
and a sensitivity analysis can be carried out efficiently. Finally, the results
of this sensitivity analysis with regard to the annular excitation are also applied
to the measurement setup."
article_number: '6'
article_type: original
author:
- first_name: Dmitrij
full_name: Dreiling, Dmitrij
id: '32616'
last_name: Dreiling
- first_name: Dominik
full_name: Itner, Dominik
last_name: Itner
- first_name: Hauke
full_name: Gravenkamp, Hauke
last_name: Gravenkamp
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Carolin
full_name: Birk, Carolin
last_name: Birk
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: Dreiling D, Itner D, Gravenkamp H, Claes L, Birk C, Henning B. Increasing the
sensitivity of ultrasonic transmission measurements for elastic material parameter
estimation. Measurement Science and Technology. 2025;36. doi:10.1088/1361-6501/add9b6
apa: Dreiling, D., Itner, D., Gravenkamp, H., Claes, L., Birk, C., & Henning,
B. (2025). Increasing the sensitivity of ultrasonic transmission measurements
for elastic material parameter estimation. Measurement Science and Technology,
36, Article 6. https://doi.org/10.1088/1361-6501/add9b6
bibtex: '@article{Dreiling_Itner_Gravenkamp_Claes_Birk_Henning_2025, title={Increasing
the sensitivity of ultrasonic transmission measurements for elastic material parameter
estimation}, volume={36}, DOI={10.1088/1361-6501/add9b6},
number={6}, journal={Measurement Science and Technology}, publisher={IOP Publishing},
author={Dreiling, Dmitrij and Itner, Dominik and Gravenkamp, Hauke and Claes,
Leander and Birk, Carolin and Henning, Bernd}, year={2025} }'
chicago: Dreiling, Dmitrij, Dominik Itner, Hauke Gravenkamp, Leander Claes, Carolin
Birk, and Bernd Henning. “Increasing the Sensitivity of Ultrasonic Transmission
Measurements for Elastic Material Parameter Estimation.” Measurement Science
and Technology 36 (2025). https://doi.org/10.1088/1361-6501/add9b6.
ieee: 'D. Dreiling, D. Itner, H. Gravenkamp, L. Claes, C. Birk, and B. Henning,
“Increasing the sensitivity of ultrasonic transmission measurements for elastic
material parameter estimation,” Measurement Science and Technology, vol.
36, Art. no. 6, 2025, doi: 10.1088/1361-6501/add9b6.'
mla: Dreiling, Dmitrij, et al. “Increasing the Sensitivity of Ultrasonic Transmission
Measurements for Elastic Material Parameter Estimation.” Measurement Science
and Technology, vol. 36, 6, IOP Publishing, 2025, doi:10.1088/1361-6501/add9b6.
short: D. Dreiling, D. Itner, H. Gravenkamp, L. Claes, C. Birk, B. Henning, Measurement
Science and Technology 36 (2025).
date_created: 2025-05-19T13:30:39Z
date_updated: 2025-05-27T15:03:38Z
department:
- _id: '49'
doi: 10.1088/1361-6501/add9b6
funded_apc: '1'
intvolume: ' 36'
keyword:
- Sensitivity analysis
- Ultrasonic transducer
- Guided waves
- Polymers
- Gram determinant
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://iopscience.iop.org/article/10.1088/1361-6501/add9b6
oa: '1'
project:
- _id: '89'
grant_number: '409779252'
name: 'VaMP: Vollständige Bestimmung der akustischen Materialparameter von Polymeren'
publication: Measurement Science and Technology
publication_identifier:
issn:
- 0957-0233
- 1361-6501
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
status: public
title: Increasing the sensitivity of ultrasonic transmission measurements for elastic
material parameter estimation
type: journal_article
user_id: '32616'
volume: 36
year: '2025'
...
---
_id: '62300'
author:
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Jonas
full_name: Hölscher, Jonas
id: '73952'
last_name: Hölscher
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- 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: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: 'Claes L, Hölscher J, Friesen O, Scheidemann C, Hemsel T, Henning B. Estimation
of third order elastic constants of piezoceramics using DC biased impedance measurements.
In: 2025 International Congress on Ultrasonics. AMA Service GmbH; 2025:142–145.
doi:10.5162/ultrasonic2025/a18-a6'
apa: Claes, L., Hölscher, J., Friesen, O., Scheidemann, C., Hemsel, T., & Henning,
B. (2025). Estimation of third order elastic constants of piezoceramics using
DC biased impedance measurements. 2025 International Congress on Ultrasonics,
142–145. https://doi.org/10.5162/ultrasonic2025/a18-a6
bibtex: '@inproceedings{Claes_Hölscher_Friesen_Scheidemann_Hemsel_Henning_2025,
place={Paderborn}, title={Estimation of third order elastic constants of piezoceramics
using DC biased impedance measurements}, DOI={10.5162/ultrasonic2025/a18-a6},
booktitle={2025 International Congress on Ultrasonics}, publisher={AMA Service
GmbH}, author={Claes, Leander and Hölscher, Jonas and Friesen, Olga and Scheidemann,
Claus and Hemsel, Tobias and Henning, Bernd}, year={2025}, pages={142–145} }'
chicago: 'Claes, Leander, Jonas Hölscher, Olga Friesen, Claus Scheidemann, Tobias
Hemsel, and Bernd Henning. “Estimation of Third Order Elastic Constants of Piezoceramics
Using DC Biased Impedance Measurements.” In 2025 International Congress on
Ultrasonics, 142–145. Paderborn: AMA Service GmbH, 2025. https://doi.org/10.5162/ultrasonic2025/a18-a6.'
ieee: 'L. Claes, J. Hölscher, O. Friesen, C. Scheidemann, T. Hemsel, and B. Henning,
“Estimation of third order elastic constants of piezoceramics using DC biased
impedance measurements,” in 2025 International Congress on Ultrasonics,
2025, pp. 142–145, doi: 10.5162/ultrasonic2025/a18-a6.'
mla: Claes, Leander, et al. “Estimation of Third Order Elastic Constants of Piezoceramics
Using DC Biased Impedance Measurements.” 2025 International Congress on Ultrasonics,
AMA Service GmbH, 2025, pp. 142–145, doi:10.5162/ultrasonic2025/a18-a6.
short: 'L. Claes, J. Hölscher, O. Friesen, C. Scheidemann, T. Hemsel, B. Henning,
in: 2025 International Congress on Ultrasonics, AMA Service GmbH, Paderborn, 2025,
pp. 142–145.'
date_created: 2025-11-25T12:23:06Z
date_updated: 2026-01-13T13:00:31Z
department:
- _id: '49'
doi: 10.5162/ultrasonic2025/a18-a6
language:
- iso: eng
page: 142–145
place: Paderborn
project:
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
publication: 2025 International Congress on Ultrasonics
publisher: AMA Service GmbH
status: public
title: Estimation of third order elastic constants of piezoceramics using DC biased
impedance measurements
type: conference
user_id: '11829'
year: '2025'
...
---
_id: '62295'
author:
- first_name: Mareen
full_name: Wippermann, Mareen
id: '74624'
last_name: Wippermann
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
citation:
ama: 'Wippermann M, Claes L. Phononic crystallography of fibre-reinforced polymers
using broadband acoustic waves. In: 2025 International Congress on Ultrasonics.
AMA Service GmbH; 2025:24--27. doi:10.5162/ultrasonic2025/a1-b2'
apa: Wippermann, M., & Claes, L. (2025). Phononic crystallography of fibre-reinforced
polymers using broadband acoustic waves. 2025 International Congress on Ultrasonics,
24--27. https://doi.org/10.5162/ultrasonic2025/a1-b2
bibtex: '@inproceedings{Wippermann_Claes_2025, place={Paderborn}, title={Phononic
crystallography of fibre-reinforced polymers using broadband acoustic waves},
DOI={10.5162/ultrasonic2025/a1-b2},
booktitle={2025 International Congress on Ultrasonics}, publisher={AMA Service
GmbH}, author={Wippermann, Mareen and Claes, Leander}, year={2025}, pages={24--27}
}'
chicago: 'Wippermann, Mareen, and Leander Claes. “Phononic Crystallography of Fibre-Reinforced
Polymers Using Broadband Acoustic Waves.” In 2025 International Congress on
Ultrasonics, 24--27. Paderborn: AMA Service GmbH, 2025. https://doi.org/10.5162/ultrasonic2025/a1-b2.'
ieee: 'M. Wippermann and L. Claes, “Phononic crystallography of fibre-reinforced
polymers using broadband acoustic waves,” in 2025 International Congress on
Ultrasonics, Paderborn, 2025, pp. 24--27, doi: 10.5162/ultrasonic2025/a1-b2.'
mla: Wippermann, Mareen, and Leander Claes. “Phononic Crystallography of Fibre-Reinforced
Polymers Using Broadband Acoustic Waves.” 2025 International Congress on Ultrasonics,
AMA Service GmbH, 2025, pp. 24--27, doi:10.5162/ultrasonic2025/a1-b2.
short: 'M. Wippermann, L. Claes, in: 2025 International Congress on Ultrasonics,
AMA Service GmbH, Paderborn, 2025, pp. 24--27.'
conference:
end_date: 2025-09-25
location: Paderborn
name: International Congress on Ultrasonics
start_date: 2025-09-21
date_created: 2025-11-25T10:23:09Z
date_updated: 2026-02-03T07:27:14Z
department:
- _id: '49'
doi: 10.5162/ultrasonic2025/a1-b2
language:
- iso: eng
page: 24--27
place: Paderborn
project:
- _id: '157'
grant_number: '495847374'
name: 'FaMOUS: Ein ultraschallbasiertes Messverfahren unter Berücksichtigung viskoelastischer
Eigenschaften zur Charakterisierung der Faser-Matrix-Haftung bei Organoblechen
sowie deren realitätsnahe Modellierung'
publication: 2025 International Congress on Ultrasonics
publication_status: published
publisher: AMA Service GmbH
status: public
title: Phononic crystallography of fibre-reinforced polymers using broadband acoustic
waves
type: conference
user_id: '11829'
year: '2025'
...
---
_id: '62301'
author:
- first_name: Dmitrij
full_name: Dreiling, Dmitrij
id: '32616'
last_name: Dreiling
- first_name: Dominik
full_name: Itner, Dominik
last_name: Itner
- first_name: Hauke
full_name: Gravenkamp, Hauke
last_name: Gravenkamp
- first_name: Carolin
full_name: Birk, Carolin
last_name: Birk
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: 'Dreiling D, Itner D, Gravenkamp H, Birk C, Henning B. A Measurement Setup
for the Determination of Temperature-Dependent Viscoelastic Material Parameters
Using an Ultrasonic Pulse-Echo Technique. In: 2025 International Congress on
Ultrasonics. AMA Service GmbH; 2025:102–105. doi:10.5162/ultrasonic2025/a12-c5'
apa: Dreiling, D., Itner, D., Gravenkamp, H., Birk, C., & Henning, B. (2025).
A Measurement Setup for the Determination of Temperature-Dependent Viscoelastic
Material Parameters Using an Ultrasonic Pulse-Echo Technique. 2025 International
Congress on Ultrasonics, 102–105. https://doi.org/10.5162/ultrasonic2025/a12-c5
bibtex: '@inproceedings{Dreiling_Itner_Gravenkamp_Birk_Henning_2025, place={Paderborn},
title={A Measurement Setup for the Determination of Temperature-Dependent Viscoelastic
Material Parameters Using an Ultrasonic Pulse-Echo Technique}, DOI={10.5162/ultrasonic2025/a12-c5},
booktitle={2025 International Congress on Ultrasonics}, publisher={AMA Service
GmbH}, author={Dreiling, Dmitrij and Itner, Dominik and Gravenkamp, Hauke and
Birk, Carolin and Henning, Bernd}, year={2025}, pages={102–105} }'
chicago: 'Dreiling, Dmitrij, Dominik Itner, Hauke Gravenkamp, Carolin Birk, and
Bernd Henning. “A Measurement Setup for the Determination of Temperature-Dependent
Viscoelastic Material Parameters Using an Ultrasonic Pulse-Echo Technique.” In
2025 International Congress on Ultrasonics, 102–105. Paderborn: AMA Service
GmbH, 2025. https://doi.org/10.5162/ultrasonic2025/a12-c5.'
ieee: 'D. Dreiling, D. Itner, H. Gravenkamp, C. Birk, and B. Henning, “A Measurement
Setup for the Determination of Temperature-Dependent Viscoelastic Material Parameters
Using an Ultrasonic Pulse-Echo Technique,” in 2025 International Congress on
Ultrasonics, 2025, pp. 102–105, doi: 10.5162/ultrasonic2025/a12-c5.'
mla: Dreiling, Dmitrij, et al. “A Measurement Setup for the Determination of Temperature-Dependent
Viscoelastic Material Parameters Using an Ultrasonic Pulse-Echo Technique.” 2025
International Congress on Ultrasonics, AMA Service GmbH, 2025, pp. 102–105,
doi:10.5162/ultrasonic2025/a12-c5.
short: 'D. Dreiling, D. Itner, H. Gravenkamp, C. Birk, B. Henning, in: 2025 International
Congress on Ultrasonics, AMA Service GmbH, Paderborn, 2025, pp. 102–105.'
date_created: 2025-11-25T12:23:07Z
date_updated: 2025-11-25T12:59:13Z
department:
- _id: '49'
doi: 10.5162/ultrasonic2025/a12-c5
language:
- iso: eng
page: 102–105
place: Paderborn
project:
- _id: '89'
name: Vollständige Bestimmung der akustischen Materialparameter von Polymeren
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: 2025 International Congress on Ultrasonics
publisher: AMA Service GmbH
status: public
title: A Measurement Setup for the Determination of Temperature-Dependent Viscoelastic
Material Parameters Using an Ultrasonic Pulse-Echo Technique
type: conference
user_id: '32616'
year: '2025'
...