---
_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: '62297'
author:
- 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: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- 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: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: 'Hölscher J, Friesen O, Claes L, Spieker C, Förstner J, Henning B. Multiscale
thermo-piezoelectric simulations using the finite element method. In: 2025
International Congress on Ultrasonics. AMA Service GmbH; 2025:130–133. doi:10.5162/ultrasonic2025/a18-a2'
apa: Hölscher, J., Friesen, O., Claes, L., Spieker, C., Förstner, J., & Henning,
B. (2025). Multiscale thermo-piezoelectric simulations using the finite element
method. 2025 International Congress on Ultrasonics, 130–133. https://doi.org/10.5162/ultrasonic2025/a18-a2
bibtex: '@inproceedings{Hölscher_Friesen_Claes_Spieker_Förstner_Henning_2025, place={Paderborn},
title={Multiscale thermo-piezoelectric simulations using the finite element method},
DOI={10.5162/ultrasonic2025/a18-a2},
booktitle={2025 International Congress on Ultrasonics}, publisher={AMA Service
GmbH}, author={Hölscher, Jonas and Friesen, Olga and Claes, Leander and Spieker,
Carsten and Förstner, Jens and Henning, Bernd}, year={2025}, pages={130–133} }'
chicago: 'Hölscher, Jonas, Olga Friesen, Leander Claes, Carsten Spieker, Jens Förstner,
and Bernd Henning. “Multiscale Thermo-Piezoelectric Simulations Using the Finite
Element Method.” In 2025 International Congress on Ultrasonics, 130–133.
Paderborn: AMA Service GmbH, 2025. https://doi.org/10.5162/ultrasonic2025/a18-a2.'
ieee: 'J. Hölscher, O. Friesen, L. Claes, C. Spieker, J. Förstner, and B. Henning,
“Multiscale thermo-piezoelectric simulations using the finite element method,”
in 2025 International Congress on Ultrasonics, 2025, pp. 130–133, doi:
10.5162/ultrasonic2025/a18-a2.'
mla: Hölscher, Jonas, et al. “Multiscale Thermo-Piezoelectric Simulations Using
the Finite Element Method.” 2025 International Congress on Ultrasonics,
AMA Service GmbH, 2025, pp. 130–133, doi:10.5162/ultrasonic2025/a18-a2.
short: 'J. Hölscher, O. Friesen, L. Claes, C. Spieker, J. Förstner, B. Henning,
in: 2025 International Congress on Ultrasonics, AMA Service GmbH, Paderborn, 2025,
pp. 130–133.'
date_created: 2025-11-25T12:23:06Z
date_updated: 2026-01-13T12:59:56Z
department:
- _id: '49'
- _id: '61'
doi: 10.5162/ultrasonic2025/a18-a2
language:
- iso: eng
page: 130–133
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: Multiscale thermo-piezoelectric simulations using the finite element method
type: conference
user_id: '11829'
year: '2025'
...
---
_id: '62000'
article_type: original
author:
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Kevin
full_name: Koch, Kevin
last_name: Koch
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- first_name: Lars
full_name: Meihost, Lars
id: '24769'
last_name: Meihost
citation:
ama: Claes L, Koch K, Friesen O, Meihost L. Machine Learning-Supported Inverse Measurement
Procedure for Broadband, Temperature Dependent Piezoelectric Material Parameters.
Acta Acustica. 2025;9(65). doi:10.1051/aacus/2025044
apa: Claes, L., Koch, K., Friesen, O., & Meihost, L. (2025). Machine Learning-Supported
Inverse Measurement Procedure for Broadband, Temperature Dependent Piezoelectric
Material Parameters. Acta Acustica, 9(65). https://doi.org/10.1051/aacus/2025044
bibtex: '@article{Claes_Koch_Friesen_Meihost_2025, title={Machine Learning-Supported
Inverse Measurement Procedure for Broadband, Temperature Dependent Piezoelectric
Material Parameters}, volume={9}, DOI={10.1051/aacus/2025044},
number={65}, journal={Acta Acustica}, publisher={EDP Sciences}, author={Claes,
Leander and Koch, Kevin and Friesen, Olga and Meihost, Lars}, year={2025} }'
chicago: Claes, Leander, Kevin Koch, Olga Friesen, and Lars Meihost. “Machine Learning-Supported
Inverse Measurement Procedure for Broadband, Temperature Dependent Piezoelectric
Material Parameters.” Acta Acustica 9, no. 65 (2025). https://doi.org/10.1051/aacus/2025044.
ieee: 'L. Claes, K. Koch, O. Friesen, and L. Meihost, “Machine Learning-Supported
Inverse Measurement Procedure for Broadband, Temperature Dependent Piezoelectric
Material Parameters,” Acta Acustica, vol. 9, no. 65, 2025, doi: 10.1051/aacus/2025044.'
mla: Claes, Leander, et al. “Machine Learning-Supported Inverse Measurement Procedure
for Broadband, Temperature Dependent Piezoelectric Material Parameters.” Acta
Acustica, vol. 9, no. 65, EDP Sciences, 2025, doi:10.1051/aacus/2025044.
short: L. Claes, K. Koch, O. Friesen, L. Meihost, Acta Acustica 9 (2025).
date_created: 2025-10-27T08:20:53Z
date_updated: 2026-01-05T08:00:05Z
department:
- _id: '49'
doi: 10.1051/aacus/2025044
intvolume: ' 9'
issue: '65'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://acta-acustica.edpsciences.org/articles/aacus/abs/2025/01/aacus250049/aacus250049.html
oa: '1'
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
publication: Acta Acustica
publication_identifier:
issn:
- 2681-4617
publication_status: published
publisher: EDP Sciences
status: public
title: Machine Learning-Supported Inverse Measurement Procedure for Broadband, Temperature
Dependent Piezoelectric Material Parameters
type: journal_article
user_id: '11829'
volume: 9
year: '2025'
...
---
_id: '62299'
author:
- 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: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- 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: 'Friesen O, Scheidemann C, Claes L, Hemsel T, Henning B. Sensitivity Analysis
and Material Parameter Estimation of a Pre-Stressed Langevin Transducer. In: 2025
International Congress on Ultrasonics. AMA Service GmbH; 2025:138–141. doi:10.5162/ultrasonic2025/a18-a4'
apa: Friesen, O., Scheidemann, C., Claes, L., Hemsel, T., & Henning, B. (2025).
Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed Langevin
Transducer. 2025 International Congress on Ultrasonics, 138–141. https://doi.org/10.5162/ultrasonic2025/a18-a4
bibtex: '@inproceedings{Friesen_Scheidemann_Claes_Hemsel_Henning_2025, place={Paderborn},
title={Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed
Langevin Transducer}, DOI={10.5162/ultrasonic2025/a18-a4},
booktitle={2025 International Congress on Ultrasonics}, publisher={AMA Service
GmbH}, author={Friesen, Olga and Scheidemann, Claus and Claes, Leander and Hemsel,
Tobias and Henning, Bernd}, year={2025}, pages={138–141} }'
chicago: 'Friesen, Olga, Claus Scheidemann, Leander Claes, Tobias Hemsel, and Bernd
Henning. “Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed
Langevin Transducer.” In 2025 International Congress on Ultrasonics, 138–141.
Paderborn: AMA Service GmbH, 2025. https://doi.org/10.5162/ultrasonic2025/a18-a4.'
ieee: 'O. Friesen, C. Scheidemann, L. Claes, T. Hemsel, and B. Henning, “Sensitivity
Analysis and Material Parameter Estimation of a Pre-Stressed Langevin Transducer,”
in 2025 International Congress on Ultrasonics, 2025, pp. 138–141, doi:
10.5162/ultrasonic2025/a18-a4.'
mla: Friesen, Olga, et al. “Sensitivity Analysis and Material Parameter Estimation
of a Pre-Stressed Langevin Transducer.” 2025 International Congress on Ultrasonics,
AMA Service GmbH, 2025, pp. 138–141, doi:10.5162/ultrasonic2025/a18-a4.
short: 'O. Friesen, C. Scheidemann, L. Claes, T. Hemsel, B. Henning, in: 2025 International
Congress on Ultrasonics, AMA Service GmbH, Paderborn, 2025, pp. 138–141.'
date_created: 2025-11-25T12:23:06Z
date_updated: 2026-01-05T08:00:48Z
department:
- _id: '49'
- _id: '151'
doi: 10.5162/ultrasonic2025/a18-a4
language:
- iso: eng
page: 138–141
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: Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed Langevin
Transducer
type: conference
user_id: '11829'
year: '2025'
...
---
_id: '62298'
author:
- first_name: Raphael
full_name: Kuess, Raphael
last_name: Kuess
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
- first_name: Andrea
full_name: Walther, Andrea
last_name: Walther
citation:
ama: 'Kuess R, Friesen O, Henning B, Walther A. Identification of temperature-dependent
material parameter functions in piezoelectricity. In: 2025 International Congress
on Ultrasonics. AMA Service GmbH; 2025:134–137. doi:10.5162/ultrasonic2025/a18-a3'
apa: Kuess, R., Friesen, O., Henning, B., & Walther, A. (2025). Identification
of temperature-dependent material parameter functions in piezoelectricity. 2025
International Congress on Ultrasonics, 134–137. https://doi.org/10.5162/ultrasonic2025/a18-a3
bibtex: '@inproceedings{Kuess_Friesen_Henning_Walther_2025, place={Germany}, title={Identification
of temperature-dependent material parameter functions in piezoelectricity}, DOI={10.5162/ultrasonic2025/a18-a3},
booktitle={2025 International Congress on Ultrasonics}, publisher={AMA Service
GmbH}, author={Kuess, Raphael and Friesen, Olga and Henning, Bernd and Walther,
Andrea}, year={2025}, pages={134–137} }'
chicago: 'Kuess, Raphael, Olga Friesen, Bernd Henning, and Andrea Walther. “Identification
of Temperature-Dependent Material Parameter Functions in Piezoelectricity.” In
2025 International Congress on Ultrasonics, 134–137. Germany: AMA Service
GmbH, 2025. https://doi.org/10.5162/ultrasonic2025/a18-a3.'
ieee: 'R. Kuess, O. Friesen, B. Henning, and A. Walther, “Identification of temperature-dependent
material parameter functions in piezoelectricity,” in 2025 International Congress
on Ultrasonics, 2025, pp. 134–137, doi: 10.5162/ultrasonic2025/a18-a3.'
mla: Kuess, Raphael, et al. “Identification of Temperature-Dependent Material Parameter
Functions in Piezoelectricity.” 2025 International Congress on Ultrasonics,
AMA Service GmbH, 2025, pp. 134–137, doi:10.5162/ultrasonic2025/a18-a3.
short: 'R. Kuess, O. Friesen, B. Henning, A. Walther, in: 2025 International Congress
on Ultrasonics, AMA Service GmbH, Germany, 2025, pp. 134–137.'
date_created: 2025-11-25T12:23:06Z
date_updated: 2026-01-05T08:01:47Z
department:
- _id: '49'
doi: 10.5162/ultrasonic2025/a18-a3
language:
- iso: eng
page: 134–137
place: Germany
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: Identification of temperature-dependent material parameter functions in piezoelectricity
type: conference
user_id: '11829'
year: '2025'
...
---
_id: '59689'
author:
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- first_name: Lars
full_name: Meihost, Lars
id: '24769'
last_name: Meihost
- first_name: Kevin
full_name: Koch, Kevin
last_name: Koch
- 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, Meihost L, Koch K, Claes L, Henning B. Estimation of piezoelectric
material parameters under varying electric field conditions. In: ; 2025. doi:10.71568/DASDAGA2025.078'
apa: Friesen, O., Meihost, L., Koch, K., Claes, L., & Henning, B. (2025). Estimation
of piezoelectric material parameters under varying electric field conditions.
DAS | DAGA 2025 - 51st Annual Meeting on Acoustics, Copenhagen. https://doi.org/10.71568/DASDAGA2025.078
bibtex: '@inproceedings{Friesen_Meihost_Koch_Claes_Henning_2025, title={Estimation
of piezoelectric material parameters under varying electric field conditions},
DOI={10.71568/DASDAGA2025.078},
author={Friesen, Olga and Meihost, Lars and Koch, Kevin and Claes, Leander and
Henning, Bernd}, year={2025} }'
chicago: Friesen, Olga, Lars Meihost, Kevin Koch, Leander Claes, and Bernd Henning.
“Estimation of Piezoelectric Material Parameters under Varying Electric Field
Conditions,” 2025. https://doi.org/10.71568/DASDAGA2025.078.
ieee: 'O. Friesen, L. Meihost, K. Koch, L. Claes, and B. Henning, “Estimation of
piezoelectric material parameters under varying electric field conditions,” presented
at the DAS | DAGA 2025 - 51st Annual Meeting on Acoustics, Copenhagen, 2025, doi:
10.71568/DASDAGA2025.078.'
mla: Friesen, Olga, et al. Estimation of Piezoelectric Material Parameters under
Varying Electric Field Conditions. 2025, doi:10.71568/DASDAGA2025.078.
short: 'O. Friesen, L. Meihost, K. Koch, L. Claes, 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: 2025-04-25T08:51:32Z
date_updated: 2026-01-05T08:02:20Z
department:
- _id: '49'
doi: 10.71568/DASDAGA2025.078
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
status: public
title: Estimation of piezoelectric material parameters under varying electric field
conditions
type: conference
user_id: '11829'
year: '2025'
...
---
_id: '53822'
abstract:
- lang: ger
text: "Piezoelektrische Keramiken finden sowohl in Sensoren als auch in Aktoren
Anwendung. Bei Hochleistungs-Ultraschallanwendungen sind diese Komponenten erheblichen
elektrischen und mechanischen Belastungen ausgesetzt, was zum Auftreten nichtlinearer
Effekte führt. Um das nichtlineare Materialverhalten piezoelektrischer Keramiken
zu charakterisieren, kann eine statische mechanische Last aufgebracht werden,
die den mechanischen Arbeitspunkt verschiebt. Durch Variation dieser statischen
mechanischen Belastung kann das lineare Verhalten in jedem Betriebspunkt charakterisiert
werden, woraufhin die nichtlinearen Eigenschaften des Materials angenähert werden
können. Allerdings ist die Sicherstellung einer homogenen mechanischen Last anspruchsvoll.
Alternativ kann eine hydrostatische Belastung realisiert werden, indem die Probe
in einen Behälter gegeben wird, der mit unter Druck stehendem Fluid gefüllt ist.
Dadurch wird eine gleichmäßige Lastverteilung über die Oberfläche der Probe erreicht.\r\n\r\nIn
diesem Beitrag wird ein Versuchsaufbau zur Durchführung elektrischer Impedanzmessungen
an piezoelektrischen Keramiken in einem Druckbehälter vorgestellt. Die Probe wird
im Inneren des Druckbehälters elektrisch kontaktiert. Unter Verwendung von unter
Druck stehendem Argon wird auf diese Weise die Messung der elektrischen Impedanz
unter hydrostatischer Last von bis zu 200 bar ermöglicht. Anschließend wird ein
inverses Verfahren angewendet, um die Materialparameter in Abhängigkeit von der
aufgebrachten Last zu ermitteln."
author:
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- first_name: Muhammad Ahsan
full_name: Pasha, Muhammad Ahsan
last_name: Pasha
- first_name: Max
full_name: Schwengelbeck, Max
last_name: Schwengelbeck
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Elmar
full_name: Baumhögger, Elmar
id: '15164'
last_name: Baumhögger
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: 'Friesen O, Pasha MA, Schwengelbeck M, Claes L, Baumhögger E, Henning B. Untersuchung
piezoelektrischer Materialeigenschaften unter hydrostatischer Last. In: Fortschritte
der Akustik - DAGA 2024. ; 2024:1117–1120.'
apa: Friesen, O., Pasha, M. A., Schwengelbeck, M., Claes, L., Baumhögger, E., &
Henning, B. (2024). Untersuchung piezoelektrischer Materialeigenschaften unter
hydrostatischer Last. Fortschritte der Akustik - DAGA 2024, 1117–1120.
bibtex: '@inproceedings{Friesen_Pasha_Schwengelbeck_Claes_Baumhögger_Henning_2024,
title={Untersuchung piezoelektrischer Materialeigenschaften unter hydrostatischer
Last}, booktitle={Fortschritte der Akustik - DAGA 2024}, author={Friesen, Olga
and Pasha, Muhammad Ahsan and Schwengelbeck, Max and Claes, Leander and Baumhögger,
Elmar and Henning, Bernd}, year={2024}, pages={1117–1120} }'
chicago: Friesen, Olga, Muhammad Ahsan Pasha, Max Schwengelbeck, Leander Claes,
Elmar Baumhögger, and Bernd Henning. “Untersuchung piezoelektrischer Materialeigenschaften
unter hydrostatischer Last.” In Fortschritte der Akustik - DAGA 2024, 1117–1120,
2024.
ieee: O. Friesen, M. A. Pasha, M. Schwengelbeck, L. Claes, E. Baumhögger, and B.
Henning, “Untersuchung piezoelektrischer Materialeigenschaften unter hydrostatischer
Last,” in Fortschritte der Akustik - DAGA 2024, Hannover, 2024, pp. 1117–1120.
mla: Friesen, Olga, et al. “Untersuchung piezoelektrischer Materialeigenschaften
unter hydrostatischer Last.” Fortschritte der Akustik - DAGA 2024, 2024,
pp. 1117–1120.
short: 'O. Friesen, M.A. Pasha, M. Schwengelbeck, L. Claes, E. Baumhögger, B. Henning,
in: Fortschritte der Akustik - DAGA 2024, 2024, pp. 1117–1120.'
conference:
end_date: 2024-03-21
location: Hannover
name: DAGA 2024 - 50. JAHRESTAGUNG FÜR AKUSTIK
start_date: 2024-03-18
date_created: 2024-05-02T13:25:29Z
date_updated: 2026-01-05T07:56:21Z
ddc:
- '620'
file:
- access_level: open_access
content_type: application/pdf
creator: ofriesen
date_created: 2024-05-02T13:38:37Z
date_updated: 2024-05-02T14:07:24Z
file_id: '53826'
file_name: daga2024friesen.pdf
file_size: 453108
relation: main_file
file_date_updated: 2024-05-02T14:07:24Z
has_accepted_license: '1'
language:
- iso: ger
oa: '1'
page: 1117–1120
project:
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
publication: Fortschritte der Akustik - DAGA 2024
publication_status: published
status: public
title: Untersuchung piezoelektrischer Materialeigenschaften unter hydrostatischer
Last
type: conference
user_id: '11829'
year: '2024'
...
---
_id: '56834'
author:
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Claus
full_name: Scheidemann, Claus
id: '38259'
last_name: Scheidemann
- first_name: Nadine
full_name: Feldmann, Nadine
id: '23082'
last_name: Feldmann
- 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: 'Friesen O, Claes L, Scheidemann C, Feldmann N, Hemsel T, Henning B. Estimation
of temperature-dependent piezoelectric material parameters using ring-shaped specimens.
In: 2023 International Congress on Ultrasonics, Beijing, China. Vol 2822.
IOP Publishing; 2024:012125. doi:10.1088/1742-6596/2822/1/012125'
apa: Friesen, O., Claes, L., Scheidemann, C., Feldmann, N., Hemsel, T., & Henning,
B. (2024). Estimation of temperature-dependent piezoelectric material parameters
using ring-shaped specimens. 2023 International Congress on Ultrasonics, Beijing,
China, 2822, 012125. https://doi.org/10.1088/1742-6596/2822/1/012125
bibtex: '@inproceedings{Friesen_Claes_Scheidemann_Feldmann_Hemsel_Henning_2024,
title={Estimation of temperature-dependent piezoelectric material parameters using
ring-shaped specimens}, volume={2822}, DOI={10.1088/1742-6596/2822/1/012125},
booktitle={2023 International Congress on Ultrasonics, Beijing, China}, publisher={IOP
Publishing}, author={Friesen, Olga and Claes, Leander and Scheidemann, Claus and
Feldmann, Nadine and Hemsel, Tobias and Henning, Bernd}, year={2024}, pages={012125}
}'
chicago: Friesen, Olga, Leander Claes, Claus Scheidemann, Nadine Feldmann, Tobias
Hemsel, and Bernd Henning. “Estimation of Temperature-Dependent Piezoelectric
Material Parameters Using Ring-Shaped Specimens.” In 2023 International Congress
on Ultrasonics, Beijing, China, 2822:012125. IOP Publishing, 2024. https://doi.org/10.1088/1742-6596/2822/1/012125.
ieee: 'O. Friesen, L. Claes, C. Scheidemann, N. Feldmann, T. Hemsel, and B. Henning,
“Estimation of temperature-dependent piezoelectric material parameters using ring-shaped
specimens,” in 2023 International Congress on Ultrasonics, Beijing, China,
2024, vol. 2822, p. 012125, doi: 10.1088/1742-6596/2822/1/012125.'
mla: Friesen, Olga, et al. “Estimation of Temperature-Dependent Piezoelectric Material
Parameters Using Ring-Shaped Specimens.” 2023 International Congress on Ultrasonics,
Beijing, China, vol. 2822, IOP Publishing, 2024, p. 012125, doi:10.1088/1742-6596/2822/1/012125.
short: 'O. Friesen, L. Claes, C. Scheidemann, N. Feldmann, T. Hemsel, B. Henning,
in: 2023 International Congress on Ultrasonics, Beijing, China, IOP Publishing,
2024, p. 012125.'
date_created: 2024-10-31T07:59:01Z
date_updated: 2026-01-05T07:58:55Z
department:
- _id: '49'
doi: 10.1088/1742-6596/2822/1/012125
intvolume: ' 2822'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://iopscience.iop.org/article/10.1088/1742-6596/2822/1/012125
oa: '1'
page: '012125'
project:
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
publication: 2023 International Congress on Ultrasonics, Beijing, China
publication_identifier:
issn:
- 1742-6596
publisher: IOP Publishing
status: public
title: Estimation of temperature-dependent piezoelectric material parameters using
ring-shaped specimens
type: conference
user_id: '11829'
volume: 2822
year: '2024'
...
---
_id: '55470'
author:
- first_name: Kevin
full_name: Koch, Kevin
last_name: Koch
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
citation:
ama: Koch K, Friesen O, Claes L. Randomised Material Parameter Impedance Dataset
of Piezoelectric Rings. Zenodo; 2024. doi:10.5281/zenodo.13143680
apa: Koch, K., Friesen, O., & Claes, L. (2024). Randomised material parameter
impedance dataset of piezoelectric rings. Zenodo. https://doi.org/10.5281/zenodo.13143680
bibtex: '@book{Koch_Friesen_Claes_2024, title={Randomised material parameter impedance
dataset of piezoelectric rings}, DOI={10.5281/zenodo.13143680},
publisher={Zenodo}, author={Koch, Kevin and Friesen, Olga and Claes, Leander},
year={2024} }'
chicago: Koch, Kevin, Olga Friesen, and Leander Claes. Randomised Material Parameter
Impedance Dataset of Piezoelectric Rings. Zenodo, 2024. https://doi.org/10.5281/zenodo.13143680.
ieee: K. Koch, O. Friesen, and L. Claes, Randomised material parameter impedance
dataset of piezoelectric rings. Zenodo, 2024.
mla: Koch, Kevin, et al. Randomised Material Parameter Impedance Dataset of Piezoelectric
Rings. Zenodo, 2024, doi:10.5281/zenodo.13143680.
short: K. Koch, O. Friesen, L. Claes, Randomised Material Parameter Impedance Dataset
of Piezoelectric Rings, Zenodo, 2024.
date_created: 2024-07-31T14:10:12Z
date_updated: 2026-01-05T07:57:46Z
department:
- _id: '49'
doi: 10.5281/zenodo.13143680
project:
- _id: '90'
name: 'ChaMP: Ein modellbasiertes Messverfahren zur Charakterisierung der frequenzabhängigen
Materialeigenschaften von Piezokeramiken unter Verwendung eines einzelnen Probekörperindividuums'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
publisher: Zenodo
status: public
title: Randomised material parameter impedance dataset of piezoelectric rings
type: research_data
user_id: '11829'
year: '2024'
...
---
_id: '55416'
author:
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Kevin
full_name: Koch, Kevin
last_name: Koch
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- first_name: Lars
full_name: Meihost, Lars
id: '24769'
last_name: Meihost
citation:
ama: 'Claes L, Koch K, Friesen O, Meihost L. Machine Learning in Inverse Measurement
Problems: An Application to Piezoelectric Material Characterisation.; 2024.'
apa: 'Claes, L., Koch, K., Friesen, O., & Meihost, L. (2024). Machine learning
in inverse measurement problems: An application to piezoelectric material characterisation.'
bibtex: '@book{Claes_Koch_Friesen_Meihost_2024, place={International Workshop on
Piezoelectric Materials and Applications (IWPMA)}, title={Machine learning in
inverse measurement problems: An application to piezoelectric material characterisation},
author={Claes, Leander and Koch, Kevin and Friesen, Olga and Meihost, Lars}, year={2024}
}'
chicago: 'Claes, Leander, Kevin Koch, Olga Friesen, and Lars Meihost. Machine
Learning in Inverse Measurement Problems: An Application to Piezoelectric Material
Characterisation. International Workshop on Piezoelectric Materials and Applications
(IWPMA), 2024.'
ieee: 'L. Claes, K. Koch, O. Friesen, and L. Meihost, Machine learning in inverse
measurement problems: An application to piezoelectric material characterisation.
International Workshop on Piezoelectric Materials and Applications (IWPMA), 2024.'
mla: 'Claes, Leander, et al. Machine Learning in Inverse Measurement Problems:
An Application to Piezoelectric Material Characterisation. 2024.'
short: 'L. Claes, K. Koch, O. Friesen, L. Meihost, Machine Learning in Inverse Measurement
Problems: An Application to Piezoelectric Material Characterisation, International
Workshop on Piezoelectric Materials and Applications (IWPMA), 2024.'
date_created: 2024-07-29T12:34:21Z
date_updated: 2026-01-05T07:57:27Z
department:
- _id: '49'
language:
- iso: eng
place: International Workshop on Piezoelectric Materials and Applications (IWPMA)
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
status: public
title: 'Machine learning in inverse measurement problems: An application to piezoelectric
material characterisation'
type: misc
user_id: '11829'
year: '2024'
...
---
_id: '56777'
abstract:
- lang: eng
text: The estimation of accurate piezoelectric material parameters is a fundamental
prerequisite for simulation-driven design of piezoelectric actuators and sensors.
Previous studies show that a full set of material parameters can be determined
in an inverse procedure using a single disc-shaped specimen with an electrode
structured for increased sensitivity with respect to all material parameters.
However, in the case of high-power actuator applications, ring-shaped piezoelectric
components are often employed, necessitating an adaptation of the previously developed
method. The alteration in geometry introduces some advantages. Accordingly, there
is no longer any requirement to modify the electrode structure in order to enhance
sensitivity. The method to estimate the material parameters presented here consists
of a total of three stages. An initial, approximate estimation of the material
parameters is determined using analytical approximations for the resonance frequencies
from the IEEE standard. These values are optimised in an inverse procedure that
employs analytic expressions for the electrical impedance of piezoelectric rings
as the forward model. Further refinement is achieved by using Finite Element (FE)
simulations as the forward model again in an inverse procedure. The method is
applied to electrical impedance measurement data, yielding material parameters
for hard piezoelectric rings. The result shows a good agreement between the simulation
and measurement results, indicating realistic material parameter values.
author:
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Nadine
full_name: Feldmann, Nadine
id: '23082'
last_name: Feldmann
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: Friesen O, Claes L, Feldmann N, Henning B. Estimation of piezoelectric material
parameters of ring-shaped specimens. tm - Technisches Messen. Published
online 2024. doi:https://doi.org/10.1515/teme-2024-0107
apa: Friesen, O., Claes, L., Feldmann, N., & Henning, B. (2024). Estimation
of piezoelectric material parameters of ring-shaped specimens. Tm - Technisches
Messen. https://doi.org/10.1515/teme-2024-0107
bibtex: '@article{Friesen_Claes_Feldmann_Henning_2024, title={Estimation of piezoelectric
material parameters of ring-shaped specimens}, DOI={https://doi.org/10.1515/teme-2024-0107},
journal={tm - Technisches Messen}, publisher={De Gruyter}, author={Friesen, Olga
and Claes, Leander and Feldmann, Nadine and Henning, Bernd}, year={2024} }'
chicago: Friesen, Olga, Leander Claes, Nadine Feldmann, and Bernd Henning. “Estimation
of Piezoelectric Material Parameters of Ring-Shaped Specimens.” Tm - Technisches
Messen, 2024. https://doi.org/10.1515/teme-2024-0107.
ieee: 'O. Friesen, L. Claes, N. Feldmann, and B. Henning, “Estimation of piezoelectric
material parameters of ring-shaped specimens,” tm - Technisches Messen,
2024, doi: https://doi.org/10.1515/teme-2024-0107.'
mla: Friesen, Olga, et al. “Estimation of Piezoelectric Material Parameters of Ring-Shaped
Specimens.” Tm - Technisches Messen, De Gruyter, 2024, doi:https://doi.org/10.1515/teme-2024-0107.
short: O. Friesen, L. Claes, N. Feldmann, B. Henning, Tm - Technisches Messen (2024).
date_created: 2024-10-29T09:07:00Z
date_updated: 2026-01-05T07:59:24Z
department:
- _id: '49'
doi: https://doi.org/10.1515/teme-2024-0107
language:
- iso: eng
project:
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
publication: tm - Technisches Messen
publication_identifier:
issn:
- 2196-7113
publication_status: published
publisher: De Gruyter
status: public
title: Estimation of piezoelectric material parameters of ring-shaped specimens
type: journal_article
user_id: '11829'
year: '2024'
...
---
_id: '43233'
author:
- first_name: Henning
full_name: Zeipert, Henning
id: '32580'
last_name: Zeipert
- first_name: Christian
full_name: von Germeten, Christian
last_name: von Germeten
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Sarah
full_name: Johannesmann, Sarah
id: '29190'
last_name: Johannesmann
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: 'Zeipert H, von Germeten C, Friesen O, Claes L, Johannesmann S, Henning B.
Investigation of change in dispersive behaviour during adhesive curing in multi-layered
structures. In: Fortschritte Der Akustik - DAGA 2023. ; 2023:819-822.'
apa: Zeipert, H., von Germeten, C., Friesen, O., Claes, L., Johannesmann, S., &
Henning, B. (2023). Investigation of change in dispersive behaviour during adhesive
curing in multi-layered structures. Fortschritte Der Akustik - DAGA 2023,
819–822.
bibtex: '@inproceedings{Zeipert_von Germeten_Friesen_Claes_Johannesmann_Henning_2023,
title={Investigation of change in dispersive behaviour during adhesive curing
in multi-layered structures}, booktitle={Fortschritte der Akustik - DAGA 2023},
author={Zeipert, Henning and von Germeten, Christian and Friesen, Olga and Claes,
Leander and Johannesmann, Sarah and Henning, Bernd}, year={2023}, pages={819–822}
}'
chicago: Zeipert, Henning, Christian von Germeten, Olga Friesen, Leander Claes,
Sarah Johannesmann, and Bernd Henning. “Investigation of Change in Dispersive
Behaviour during Adhesive Curing in Multi-Layered Structures.” In Fortschritte
Der Akustik - DAGA 2023, 819–22, 2023.
ieee: H. Zeipert, C. von Germeten, O. Friesen, L. Claes, S. Johannesmann, and B.
Henning, “Investigation of change in dispersive behaviour during adhesive curing
in multi-layered structures,” in Fortschritte der Akustik - DAGA 2023,
Hamburg, 2023, pp. 819–822.
mla: Zeipert, Henning, et al. “Investigation of Change in Dispersive Behaviour during
Adhesive Curing in Multi-Layered Structures.” Fortschritte Der Akustik - DAGA
2023, 2023, pp. 819–22.
short: 'H. Zeipert, C. von Germeten, O. Friesen, L. Claes, S. Johannesmann, B. Henning,
in: Fortschritte Der Akustik - DAGA 2023, 2023, pp. 819–822.'
conference:
end_date: 2023-03-09
location: Hamburg
name: DAGA 2023 - 49. Jahrestagung für Akustik
start_date: 2023-03-06
date_created: 2023-03-30T14:10:39Z
date_updated: 2023-04-19T09:18:30Z
department:
- _id: '49'
language:
- iso: eng
page: 819-822
project:
- _id: '105'
grant_number: '449607253'
name: 'LaWaMoRe: Vermiedene Kreuzungen von Lamb-Wellenmoden in mehrlagigen Strukturen'
publication: Fortschritte der Akustik - DAGA 2023
status: public
title: Investigation of change in dispersive behaviour during adhesive curing in multi-layered
structures
type: conference
user_id: '11829'
year: '2023'
...
---
_id: '51117'
author:
- 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: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Scheidemann C, Hemsel T, Friesen O, Claes L, Sextro W. Influence of Temperature
and Pre-Stress on the Piezoelectric Material Behavior of Ring-Shaped Ceramics.
In: ; 2023.'
apa: Scheidemann, C., Hemsel, T., Friesen, O., Claes, L., & Sextro, W. (2023).
Influence of Temperature and Pre-Stress on the Piezoelectric Material Behavior
of Ring-Shaped Ceramics. 7th International Conference on Advanced Electromaterials
(ICAE 2023), Jeju, Korea.
bibtex: '@inproceedings{Scheidemann_Hemsel_Friesen_Claes_Sextro_2023, title={Influence
of Temperature and Pre-Stress on the Piezoelectric Material Behavior of Ring-Shaped
Ceramics}, author={Scheidemann, Claus and Hemsel, Tobias and Friesen, Olga and
Claes, Leander and Sextro, Walter}, year={2023} }'
chicago: Scheidemann, Claus, Tobias Hemsel, Olga Friesen, Leander Claes, and Walter
Sextro. “Influence of Temperature and Pre-Stress on the Piezoelectric Material
Behavior of Ring-Shaped Ceramics,” 2023.
ieee: C. Scheidemann, T. Hemsel, O. Friesen, L. Claes, and W. Sextro, “Influence
of Temperature and Pre-Stress on the Piezoelectric Material Behavior of Ring-Shaped
Ceramics,” presented at the 7th International Conference on Advanced Electromaterials
(ICAE 2023), Jeju, Korea, 2023.
mla: Scheidemann, Claus, et al. Influence of Temperature and Pre-Stress on the
Piezoelectric Material Behavior of Ring-Shaped Ceramics. 2023.
short: 'C. Scheidemann, T. Hemsel, O. Friesen, L. Claes, W. Sextro, in: 2023.'
conference:
end_date: 2023-11-03
location: Jeju, Korea
name: 7th International Conference on Advanced Electromaterials (ICAE 2023)
start_date: 2023-10-31
date_created: 2024-02-01T15:55:44Z
date_updated: 2026-03-02T10:59:13Z
ddc:
- '620'
department:
- _id: '151'
- _id: '49'
file:
- access_level: open_access
content_type: application/pdf
creator: hemsel
date_created: 2026-01-30T07:15:31Z
date_updated: 2026-03-02T10:59:13Z
file_id: '63815'
file_name: Sch23_ICAE_2023.pdf
file_size: 608243
relation: main_file
file_date_updated: 2026-03-02T10:59:13Z
has_accepted_license: '1'
language:
- iso: eng
oa: '1'
project:
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
status: public
title: Influence of Temperature and Pre-Stress on the Piezoelectric Material Behavior
of Ring-Shaped Ceramics
type: conference
user_id: '210'
year: '2023'
...
---
_id: '6558'
author:
- first_name: Olga
full_name: Friesen, Olga
id: '44026'
last_name: Friesen
- first_name: Leander
full_name: Claes, Leander
id: '11829'
last_name: Claes
orcid: 0000-0002-4393-268X
- first_name: Nadine
full_name: Feldmann, Nadine
id: '23082'
last_name: Feldmann
- first_name: Bernd
full_name: Henning, Bernd
id: '213'
last_name: Henning
citation:
ama: Friesen O, Claes L, Feldmann N, Henning B. Estimation of Piezoelectric Material
Parameters of Ring-Shaped Specimens.; 2022.
apa: Friesen, O., Claes, L., Feldmann, N., & Henning, B. (2022). Estimation
of piezoelectric material parameters of ring-shaped specimens.
bibtex: '@book{Friesen_Claes_Feldmann_Henning_2022, place={International Workshop
on Piezoelectric Materials and Applications in Actuators (IWPMA)}, title={Estimation
of piezoelectric material parameters of ring-shaped specimens}, author={Friesen,
Olga and Claes, Leander and Feldmann, Nadine and Henning, Bernd}, year={2022}
}'
chicago: Friesen, Olga, Leander Claes, Nadine Feldmann, and Bernd Henning. Estimation
of Piezoelectric Material Parameters of Ring-Shaped Specimens. International
Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA), 2022.
ieee: O. Friesen, L. Claes, N. Feldmann, and B. Henning, Estimation of piezoelectric
material parameters of ring-shaped specimens. International Workshop on Piezoelectric
Materials and Applications in Actuators (IWPMA), 2022.
mla: Friesen, Olga, et al. Estimation of Piezoelectric Material Parameters of
Ring-Shaped Specimens. 2022.
short: O. Friesen, L. Claes, N. Feldmann, B. Henning, Estimation of Piezoelectric
Material Parameters of Ring-Shaped Specimens, International Workshop on Piezoelectric
Materials and Applications in Actuators (IWPMA), 2022.
date_created: 2019-01-09T14:37:05Z
date_updated: 2026-01-05T08:02:08Z
department:
- _id: '49'
language:
- iso: eng
place: International Workshop on Piezoelectric Materials and Applications in Actuators
(IWPMA)
project:
- _id: '90'
name: 'ChaMP: Ein modellbasiertes Messverfahren zur Charakterisierung der frequenzabhängigen
Materialeigenschaften von Piezokeramiken unter Verwendung eines einzelnen Probekörperindividuums'
- _id: '245'
name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken
für Leistungsschallanwendungen (NEPTUN)'
status: public
title: Estimation of piezoelectric material parameters of ring-shaped specimens
type: misc
user_id: '11829'
year: '2022'
...