--- _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: '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: '62296' author: - 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: Jonas full_name: Hölscher, Jonas id: '73952' last_name: Hölscher - 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: 'Spieker C, Förstner J, Hölscher J, Claes L, Henning B. Modeling and simulation of the behavior of piezoceramics with the discontinuous Galerkin method. In: 2025 International Congress on Ultrasonics. AMA Service GmbH; 2025:126–129. doi:10.5162/ultrasonic2025/a18-a1' apa: Spieker, C., Förstner, J., Hölscher, J., Claes, L., & Henning, B. (2025). Modeling and simulation of the behavior of piezoceramics with the discontinuous Galerkin method. 2025 International Congress on Ultrasonics, 126–129. https://doi.org/10.5162/ultrasonic2025/a18-a1 bibtex: '@inproceedings{Spieker_Förstner_Hölscher_Claes_Henning_2025, place={Paderborn}, title={Modeling and simulation of the behavior of piezoceramics with the discontinuous Galerkin method}, DOI={10.5162/ultrasonic2025/a18-a1}, booktitle={2025 International Congress on Ultrasonics}, publisher={AMA Service GmbH}, author={Spieker, Carsten and Förstner, Jens and Hölscher, Jonas and Claes, Leander and Henning, Bernd}, year={2025}, pages={126–129} }' chicago: 'Spieker, Carsten, Jens Förstner, Jonas Hölscher, Leander Claes, and Bernd Henning. “Modeling and Simulation of the Behavior of Piezoceramics with the Discontinuous Galerkin Method.” In 2025 International Congress on Ultrasonics, 126–129. Paderborn: AMA Service GmbH, 2025. https://doi.org/10.5162/ultrasonic2025/a18-a1.' ieee: 'C. Spieker, J. Förstner, J. Hölscher, L. Claes, and B. Henning, “Modeling and simulation of the behavior of piezoceramics with the discontinuous Galerkin method,” in 2025 International Congress on Ultrasonics, 2025, pp. 126–129, doi: 10.5162/ultrasonic2025/a18-a1.' mla: Spieker, Carsten, et al. “Modeling and Simulation of the Behavior of Piezoceramics with the Discontinuous Galerkin Method.” 2025 International Congress on Ultrasonics, AMA Service GmbH, 2025, pp. 126–129, doi:10.5162/ultrasonic2025/a18-a1. short: 'C. Spieker, J. Förstner, J. Hölscher, L. Claes, B. Henning, in: 2025 International Congress on Ultrasonics, AMA Service GmbH, Paderborn, 2025, pp. 126–129.' date_created: 2025-11-25T12:23:05Z date_updated: 2026-01-13T13:00:25Z department: - _id: '49' - _id: '61' doi: 10.5162/ultrasonic2025/a18-a1 language: - iso: eng page: 126–129 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: Modeling and simulation of the behavior of piezoceramics with the discontinuous Galerkin method 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: '59258' article_number: '44' author: - first_name: Michael full_name: Winkler, Michael id: '31496' last_name: Winkler citation: ama: Winkler M. Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity with Temperature-Dependent Parameters. Applied Mathematics & Optimization. 2025;91(2). doi:10.1007/s00245-025-10243-9 apa: Winkler, M. (2025). Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity with Temperature-Dependent Parameters. Applied Mathematics & Optimization, 91(2), Article 44. https://doi.org/10.1007/s00245-025-10243-9 bibtex: '@article{Winkler_2025, title={Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity with Temperature-Dependent Parameters}, volume={91}, DOI={10.1007/s00245-025-10243-9}, number={244}, journal={Applied Mathematics & Optimization}, publisher={Springer Science and Business Media LLC}, author={Winkler, Michael}, year={2025} }' chicago: Winkler, Michael. “Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity with Temperature-Dependent Parameters.” Applied Mathematics & Optimization 91, no. 2 (2025). https://doi.org/10.1007/s00245-025-10243-9. ieee: 'M. Winkler, “Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity with Temperature-Dependent Parameters,” Applied Mathematics & Optimization, vol. 91, no. 2, Art. no. 44, 2025, doi: 10.1007/s00245-025-10243-9.' mla: Winkler, Michael. “Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity with Temperature-Dependent Parameters.” Applied Mathematics & Optimization, vol. 91, no. 2, 44, Springer Science and Business Media LLC, 2025, doi:10.1007/s00245-025-10243-9. short: M. Winkler, Applied Mathematics & Optimization 91 (2025). date_created: 2025-04-02T11:23:25Z date_updated: 2026-02-26T15:59:30Z department: - _id: '90' doi: 10.1007/s00245-025-10243-9 intvolume: ' 91' issue: '2' language: - iso: eng project: - _id: '245' name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)' publication: Applied Mathematics & Optimization publication_identifier: issn: - 0095-4616 - 1432-0606 publication_status: published publisher: Springer Science and Business Media LLC status: public title: Rough Data in an Evolution System Generalizing 1D Thermoviscoelasticity with Temperature-Dependent Parameters type: journal_article user_id: '11829' volume: 91 year: '2025' ... --- _id: '61755' 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: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: 'Scheidemann C, Hemsel T, Sextro W. Time dependent material characteristics of prestressed piezoelectric ceramics in langevin transducers. In: ; 2025.' apa: Scheidemann, C., Hemsel, T., & Sextro, W. (2025). Time dependent material characteristics of prestressed piezoelectric ceramics in langevin transducers. 22nd International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA), Vilnius, Lithuania. bibtex: '@inproceedings{Scheidemann_Hemsel_Sextro_2025, title={Time dependent material characteristics of prestressed piezoelectric ceramics in langevin transducers}, author={Scheidemann, Claus and Hemsel, Tobias and Sextro, Walter}, year={2025} }' chicago: Scheidemann, Claus, Tobias Hemsel, and Walter Sextro. “Time Dependent Material Characteristics of Prestressed Piezoelectric Ceramics in Langevin Transducers,” 2025. ieee: C. Scheidemann, T. Hemsel, and W. Sextro, “Time dependent material characteristics of prestressed piezoelectric ceramics in langevin transducers,” presented at the 22nd International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA), Vilnius, Lithuania, 2025. mla: Scheidemann, Claus, et al. Time Dependent Material Characteristics of Prestressed Piezoelectric Ceramics in Langevin Transducers. 2025. short: 'C. Scheidemann, T. Hemsel, W. Sextro, in: 2025.' conference: end_date: 2025-07-3 location: Vilnius, Lithuania name: 22nd International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA) start_date: 2025-07-1 date_created: 2025-10-08T14:22:32Z date_updated: 2026-03-02T10:59:53Z ddc: - '620' department: - _id: '151' file: - access_level: open_access content_type: application/pdf creator: hemsel date_created: 2026-01-30T11:07:48Z date_updated: 2026-03-02T10:59:53Z file_id: '63817' file_name: SHS25_IWPMA_2025.pdf file_size: 644147 relation: main_file file_date_updated: 2026-03-02T10:59:53Z 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: Time dependent material characteristics of prestressed piezoelectric ceramics in langevin transducers type: conference user_id: '210' year: '2025' ... --- _id: '61757' author: - first_name: Claus full_name: Scheidemann, Claus id: '38259' last_name: Scheidemann - first_name: Julius full_name: Porzenheim, Julius last_name: Porzenheim - first_name: Tobias full_name: Hemsel, Tobias id: '210' last_name: Hemsel - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: 'Scheidemann C, Porzenheim J, Hemsel T, Sextro W. Investigation of the Setting Behaviour of Mechanically Biased Piezoelectric Ultrasonic Transducers. In: ; 2025.' apa: Scheidemann, C., Porzenheim, J., Hemsel, T., & Sextro, W. (2025). Investigation of the Setting Behaviour of Mechanically Biased Piezoelectric Ultrasonic Transducers. 2025 International Congress on Ultrasonics (ICU), Paderborn, Germany. bibtex: '@inproceedings{Scheidemann_Porzenheim_Hemsel_Sextro_2025, title={Investigation of the Setting Behaviour of Mechanically Biased Piezoelectric Ultrasonic Transducers}, author={Scheidemann, Claus and Porzenheim, Julius and Hemsel, Tobias and Sextro, Walter}, year={2025} }' chicago: Scheidemann, Claus, Julius Porzenheim, Tobias Hemsel, and Walter Sextro. “Investigation of the Setting Behaviour of Mechanically Biased Piezoelectric Ultrasonic Transducers,” 2025. ieee: C. Scheidemann, J. Porzenheim, T. Hemsel, and W. Sextro, “Investigation of the Setting Behaviour of Mechanically Biased Piezoelectric Ultrasonic Transducers,” presented at the 2025 International Congress on Ultrasonics (ICU), Paderborn, Germany, 2025. mla: Scheidemann, Claus, et al. Investigation of the Setting Behaviour of Mechanically Biased Piezoelectric Ultrasonic Transducers. 2025. short: 'C. Scheidemann, J. Porzenheim, T. Hemsel, W. Sextro, in: 2025.' conference: end_date: 2025-09-25 location: Paderborn, Germany name: 2025 International Congress on Ultrasonics (ICU) start_date: 2025-09-21 date_created: 2025-10-08T14:33:44Z date_updated: 2026-03-02T10:59:36Z ddc: - '620' department: - _id: '151' file: - access_level: open_access content_type: application/pdf creator: hemsel date_created: 2026-01-30T07:30:44Z date_updated: 2026-03-02T10:59:36Z file_id: '63816' file_name: Sch25_ICU_2025.pdf file_size: 783790 relation: main_file file_date_updated: 2026-03-02T10:59:36Z 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: Investigation of the Setting Behaviour of Mechanically Biased Piezoelectric Ultrasonic Transducers type: conference user_id: '210' 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: '54837' author: - first_name: Leander full_name: Claes, Leander id: '11829' last_name: Claes orcid: 0000-0002-4393-268X - first_name: Johannes full_name: Lankeit, Johannes last_name: Lankeit - first_name: Michael full_name: Winkler, Michael id: '31496' last_name: Winkler citation: ama: 'Claes L, Lankeit J, Winkler M. A model for heat generation by acoustic waves in piezoelectric materials: Global large-data solutions. Mathematical Models and Methods in Applied Sciences. 2025;35(11):2465-2512. doi:10.1142/s0218202525500447' apa: 'Claes, L., Lankeit, J., & Winkler, M. (2025). A model for heat generation by acoustic waves in piezoelectric materials: Global large-data solutions. Mathematical Models and Methods in Applied Sciences, 35(11), 2465–2512. https://doi.org/10.1142/s0218202525500447' bibtex: '@article{Claes_Lankeit_Winkler_2025, title={A model for heat generation by acoustic waves in piezoelectric materials: Global large-data solutions}, volume={35}, DOI={10.1142/s0218202525500447}, number={11}, journal={Mathematical Models and Methods in Applied Sciences}, publisher={World Scientific Pub Co Pte Ltd}, author={Claes, Leander and Lankeit, Johannes and Winkler, Michael}, year={2025}, pages={2465–2512} }' chicago: 'Claes, Leander, Johannes Lankeit, and Michael Winkler. “A Model for Heat Generation by Acoustic Waves in Piezoelectric Materials: Global Large-Data Solutions.” Mathematical Models and Methods in Applied Sciences 35, no. 11 (2025): 2465–2512. https://doi.org/10.1142/s0218202525500447.' ieee: 'L. Claes, J. Lankeit, and M. Winkler, “A model for heat generation by acoustic waves in piezoelectric materials: Global large-data solutions,” Mathematical Models and Methods in Applied Sciences, vol. 35, no. 11, pp. 2465–2512, 2025, doi: 10.1142/s0218202525500447.' mla: 'Claes, Leander, et al. “A Model for Heat Generation by Acoustic Waves in Piezoelectric Materials: Global Large-Data Solutions.” Mathematical Models and Methods in Applied Sciences, vol. 35, no. 11, World Scientific Pub Co Pte Ltd, 2025, pp. 2465–512, doi:10.1142/s0218202525500447.' short: L. Claes, J. Lankeit, M. Winkler, Mathematical Models and Methods in Applied Sciences 35 (2025) 2465–2512. date_created: 2024-06-20T13:43:42Z date_updated: 2026-01-05T07:59:41Z department: - _id: '90' - _id: '49' doi: 10.1142/s0218202525500447 external_id: arxiv: - '2411.14900' intvolume: ' 35' issue: '11' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/pdf/2411.14900 oa: '1' page: 2465-2512 project: - _id: '245' name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)' publication: Mathematical Models and Methods in Applied Sciences publication_identifier: issn: - 1793-6314 publisher: World Scientific Pub Co Pte Ltd status: public title: 'A model for heat generation by acoustic waves in piezoelectric materials: Global large-data solutions' type: journal_article user_id: '11829' volume: 35 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: '53824' author: - 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: Benjamin full_name: Jurgelucks, Benjamin last_name: Jurgelucks - first_name: Lars full_name: Meihost, Lars id: '24769' last_name: Meihost - first_name: Bernd full_name: Henning, Bernd id: '213' last_name: Henning citation: ama: 'Koch K, Claes L, Jurgelucks B, Meihost L, Henning B. Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze. In: Gesellschaft für Akustik e.V. D, ed. Fortschritte der Akustik - DAGA 2024. ; 2024:1113–1116.' apa: Koch, K., Claes, L., Jurgelucks, B., Meihost, L., & Henning, B. (2024). Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze. In D. Gesellschaft für Akustik e.V. (Ed.), Fortschritte der Akustik - DAGA 2024 (pp. 1113–1116). bibtex: '@inproceedings{Koch_Claes_Jurgelucks_Meihost_Henning_2024, title={Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze}, booktitle={Fortschritte der Akustik - DAGA 2024}, author={Koch, Kevin and Claes, Leander and Jurgelucks, Benjamin and Meihost, Lars and Henning, Bernd}, editor={Gesellschaft für Akustik e.V., Deutsche }, year={2024}, pages={1113–1116} }' chicago: Koch, Kevin, Leander Claes, Benjamin Jurgelucks, Lars Meihost, and Bernd Henning. “Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze.” In Fortschritte der Akustik - DAGA 2024, edited by Deutsche Gesellschaft für Akustik e.V., 1113–1116, 2024. ieee: K. Koch, L. Claes, B. Jurgelucks, L. Meihost, and B. Henning, “Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze,” in Fortschritte der Akustik - DAGA 2024, 2024, pp. 1113–1116. mla: Koch, Kevin, et al. “Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze.” Fortschritte der Akustik - DAGA 2024, edited by Deutsche Gesellschaft für Akustik e.V., 2024, pp. 1113–1116. short: 'K. Koch, L. Claes, B. Jurgelucks, L. Meihost, B. Henning, in: D. Gesellschaft für Akustik e.V. (Ed.), Fortschritte der Akustik - DAGA 2024, 2024, pp. 1113–1116.' conference: end_date: 2024-03-21 start_date: 2024-03-18 date_created: 2024-05-02T13:34:01Z date_updated: 2026-01-05T07:56:42Z ddc: - '620' department: - _id: '49' editor: - first_name: 'Deutsche ' full_name: 'Gesellschaft für Akustik e.V., Deutsche ' last_name: Gesellschaft für Akustik e.V. file: - access_level: open_access content_type: application/pdf creator: leanderc date_created: 2024-05-02T13:36:51Z date_updated: 2024-05-02T14:06:28Z file_id: '53825' file_name: daga2024koch.pdf file_size: 365911 relation: main_file file_date_updated: 2024-05-02T14:06:28Z has_accepted_license: '1' language: - iso: ger oa: '1' page: 1113–1116 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)' publication: Fortschritte der Akustik - DAGA 2024 status: public title: Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze 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: '53662' author: - 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 citation: ama: Koch K, Claes L. Randomised Material Parameter Piezoelectric Impedance Dataset with Structured Electrodes. zenodo; 2024. doi:10.5281/ZENODO.11064206 apa: Koch, K., & Claes, L. (2024). Randomised material parameter piezoelectric impedance dataset with structured electrodes. zenodo. https://doi.org/10.5281/ZENODO.11064206 bibtex: '@book{Koch_Claes_2024, title={Randomised material parameter piezoelectric impedance dataset with structured electrodes}, DOI={10.5281/ZENODO.11064206}, publisher={zenodo}, author={Koch, Kevin and Claes, Leander}, year={2024} }' chicago: Koch, Kevin, and Leander Claes. Randomised Material Parameter Piezoelectric Impedance Dataset with Structured Electrodes. zenodo, 2024. https://doi.org/10.5281/ZENODO.11064206. ieee: K. Koch and L. Claes, Randomised material parameter piezoelectric impedance dataset with structured electrodes. zenodo, 2024. mla: Koch, Kevin, and Leander Claes. Randomised Material Parameter Piezoelectric Impedance Dataset with Structured Electrodes. zenodo, 2024, doi:10.5281/ZENODO.11064206. short: K. Koch, L. Claes, Randomised Material Parameter Piezoelectric Impedance Dataset with Structured Electrodes, zenodo, 2024. date_created: 2024-04-25T13:54:49Z date_updated: 2026-01-05T07:56:58Z department: - _id: '49' doi: 10.5281/ZENODO.11064206 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 piezoelectric impedance dataset with structured electrodes 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: '54314' alternative_title: - Neural networks for initial value estimation in the identification of piezoelectric material parameters article_type: original author: - 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: Benjamin full_name: Jurgelucks, Benjamin last_name: Jurgelucks - first_name: Lars full_name: Meihost, Lars id: '24769' last_name: Meihost citation: ama: Koch K, Claes L, Jurgelucks B, Meihost L. Neuronale Netze zur Startwertschätzung bei der Identifikation piezoelektrischer Materialparameter. tm - Technisches Messen. Published online 2024. doi:10.1515/teme-2024-0099 apa: Koch, K., Claes, L., Jurgelucks, B., & Meihost, L. (2024). Neuronale Netze zur Startwertschätzung bei der Identifikation piezoelektrischer Materialparameter. Tm - Technisches Messen. https://doi.org/10.1515/teme-2024-0099 bibtex: '@article{Koch_Claes_Jurgelucks_Meihost_2024, title={Neuronale Netze zur Startwertschätzung bei der Identifikation piezoelektrischer Materialparameter}, DOI={10.1515/teme-2024-0099}, journal={tm - Technisches Messen}, publisher={Walter de Gruyter GmbH}, author={Koch, Kevin and Claes, Leander and Jurgelucks, Benjamin and Meihost, Lars}, year={2024} }' chicago: Koch, Kevin, Leander Claes, Benjamin Jurgelucks, and Lars Meihost. “Neuronale Netze Zur Startwertschätzung Bei Der Identifikation Piezoelektrischer Materialparameter.” Tm - Technisches Messen, 2024. https://doi.org/10.1515/teme-2024-0099. ieee: 'K. Koch, L. Claes, B. Jurgelucks, and L. Meihost, “Neuronale Netze zur Startwertschätzung bei der Identifikation piezoelektrischer Materialparameter,” tm - Technisches Messen, 2024, doi: 10.1515/teme-2024-0099.' mla: Koch, Kevin, et al. “Neuronale Netze Zur Startwertschätzung Bei Der Identifikation Piezoelektrischer Materialparameter.” Tm - Technisches Messen, Walter de Gruyter GmbH, 2024, doi:10.1515/teme-2024-0099. short: K. Koch, L. Claes, B. Jurgelucks, L. Meihost, Tm - Technisches Messen (2024). date_created: 2024-05-17T08:26:55Z date_updated: 2026-01-05T07:59:09Z department: - _id: '49' doi: 10.1515/teme-2024-0099 language: - iso: eng main_file_link: - url: https://www.degruyter.com/document/doi/10.1515/teme-2024-0099/html 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)' publication: tm - Technisches Messen publisher: Walter de Gruyter GmbH quality_controlled: '1' status: public title: Neuronale Netze zur Startwertschätzung bei der Identifikation piezoelektrischer Materialparameter type: journal_article user_id: '11829' year: '2024' ...