[{"author":[{"id":"44026","full_name":"Friesen, Olga","last_name":"Friesen","first_name":"Olga"},{"id":"73952","last_name":"Hölscher","first_name":"Jonas","full_name":"Hölscher, Jonas"},{"last_name":"Siegmund","first_name":"Michael B. K.","full_name":"Siegmund, Michael B. K."},{"last_name":"Claes","orcid":"0000-0002-4393-268X","first_name":"Leander","full_name":"Claes, Leander","id":"11829"},{"last_name":"Henning","first_name":"Bernd","full_name":"Henning, Bernd","id":"213"}],"status":"public","title":"Experimental and Numerical Investigation of Jump Phenomena in the Frequency Response of Piezoelectric Systems","year":"2026","date_updated":"2026-05-13T14:25:54Z","language":[{"iso":"eng"}],"_id":"65625","user_id":"44026","citation":{"ama":"Friesen O, Hölscher J, Siegmund MBK, Claes L, Henning B. Experimental and Numerical Investigation of Jump Phenomena in the Frequency Response of Piezoelectric Systems. In: ; 2026.","bibtex":"@inproceedings{Friesen_Hölscher_Siegmund_Claes_Henning_2026, place={96th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM)}, title={Experimental and Numerical Investigation of Jump Phenomena in the Frequency Response of Piezoelectric Systems}, author={Friesen, Olga and Hölscher, Jonas and Siegmund, Michael B. K. and Claes, Leander and Henning, Bernd}, year={2026} }","mla":"Friesen, Olga, et al. <i>Experimental and Numerical Investigation of Jump Phenomena in the Frequency Response of Piezoelectric Systems</i>. 2026.","short":"O. Friesen, J. Hölscher, M.B.K. Siegmund, L. Claes, B. Henning, in: 96th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), 2026.","chicago":"Friesen, Olga, Jonas Hölscher, Michael B. K. Siegmund, Leander Claes, and Bernd Henning. “Experimental and Numerical Investigation of Jump Phenomena in the Frequency Response of Piezoelectric Systems.” 96th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), 2026.","apa":"Friesen, O., Hölscher, J., Siegmund, M. B. K., Claes, L., &#38; Henning, B. (2026). <i>Experimental and Numerical Investigation of Jump Phenomena in the Frequency Response of Piezoelectric Systems</i>.","ieee":"O. Friesen, J. Hölscher, M. B. K. Siegmund, L. Claes, and B. Henning, “Experimental and Numerical Investigation of Jump Phenomena in the Frequency Response of Piezoelectric Systems,” 2026."},"project":[{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"date_created":"2026-05-13T14:24:34Z","place":"96th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM)","department":[{"_id":"49"}],"type":"conference_abstract"},{"user_id":"158","publisher":"Walter de Gruyter GmbH","_id":"65785","status":"public","oa":"1","project":[{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"citation":{"mla":"Friesen, Olga, et al. “Measurement of Multiphysical Material Parameters of Piezoceramic Components for High-Power Ultrasonic Applications.” <i>Tm - Technisches Messen</i>, Walter de Gruyter GmbH, 2026, doi:<a href=\"https://doi.org/10.1515/teme-2026-0042\">10.1515/teme-2026-0042</a>.","ama":"Friesen O, Claes L, Hölscher J, et al. Measurement of multiphysical material parameters of piezoceramic components for high-power ultrasonic applications. <i>tm - Technisches Messen</i>. Published online 2026. doi:<a href=\"https://doi.org/10.1515/teme-2026-0042\">10.1515/teme-2026-0042</a>","bibtex":"@article{Friesen_Claes_Hölscher_Henning_Scheidemann_Hemsel_Kuess_Walther_Spieker_Förstner_2026, title={Measurement of multiphysical material parameters of piezoceramic components for high-power ultrasonic applications}, DOI={<a href=\"https://doi.org/10.1515/teme-2026-0042\">10.1515/teme-2026-0042</a>}, journal={tm - Technisches Messen}, publisher={Walter de Gruyter GmbH}, author={Friesen, Olga and Claes, Leander and Hölscher, Jonas and Henning, Bernd and Scheidemann, Claus and Hemsel, Tobias and Kuess, Raphael and Walther, Andrea and Spieker, Carsten and Förstner, Jens}, year={2026} }","apa":"Friesen, O., Claes, L., Hölscher, J., Henning, B., Scheidemann, C., Hemsel, T., Kuess, R., Walther, A., Spieker, C., &#38; Förstner, J. (2026). Measurement of multiphysical material parameters of piezoceramic components for high-power ultrasonic applications. <i>Tm - Technisches Messen</i>. <a href=\"https://doi.org/10.1515/teme-2026-0042\">https://doi.org/10.1515/teme-2026-0042</a>","ieee":"O. Friesen <i>et al.</i>, “Measurement of multiphysical material parameters of piezoceramic components for high-power ultrasonic applications,” <i>tm - Technisches Messen</i>, 2026, doi: <a href=\"https://doi.org/10.1515/teme-2026-0042\">10.1515/teme-2026-0042</a>.","short":"O. Friesen, L. Claes, J. Hölscher, B. Henning, C. Scheidemann, T. Hemsel, R. Kuess, A. Walther, C. Spieker, J. Förstner, Tm - Technisches Messen (2026).","chicago":"Friesen, Olga, Leander Claes, Jonas Hölscher, Bernd Henning, Claus Scheidemann, Tobias Hemsel, Raphael Kuess, Andrea Walther, Carsten Spieker, and Jens Förstner. “Measurement of Multiphysical Material Parameters of Piezoceramic Components for High-Power Ultrasonic Applications.” <i>Tm - Technisches Messen</i>, 2026. <a href=\"https://doi.org/10.1515/teme-2026-0042\">https://doi.org/10.1515/teme-2026-0042</a>."},"doi":"10.1515/teme-2026-0042","main_file_link":[{"open_access":"1"}],"language":[{"iso":"eng"}],"date_updated":"2026-06-08T17:54:45Z","publication_status":"published","year":"2026","title":"Measurement of multiphysical material parameters of piezoceramic components for high-power ultrasonic applications","author":[{"id":"44026","orcid":"0009-0007-5598-9484","first_name":"Olga","last_name":"Friesen","full_name":"Friesen, Olga"},{"orcid":"0000-0002-4393-268X","first_name":"Leander","last_name":"Claes","full_name":"Claes, Leander","id":"11829"},{"id":"73952","first_name":"Jonas","last_name":"Hölscher","full_name":"Hölscher, Jonas"},{"full_name":"Henning, Bernd","last_name":"Henning","first_name":"Bernd","id":"213"},{"full_name":"Scheidemann, Claus","last_name":"Scheidemann","first_name":"Claus","id":"38259"},{"id":"210","first_name":"Tobias","last_name":"Hemsel","full_name":"Hemsel, Tobias"},{"full_name":"Kuess, Raphael","first_name":"Raphael","last_name":"Kuess"},{"full_name":"Walther, Andrea","first_name":"Andrea","last_name":"Walther"},{"id":"67587","first_name":"Carsten","last_name":"Spieker","full_name":"Spieker, Carsten"},{"id":"158","first_name":"Jens","orcid":"0000-0001-7059-9862","last_name":"Förstner","full_name":"Förstner, Jens"}],"publication_identifier":{"issn":["0171-8096","2196-7113"]},"type":"journal_article","keyword":["tet_topic_piezo"],"department":[{"_id":"49"}],"date_created":"2026-06-08T05:44:09Z","abstract":[{"text":"Simulation-based design of high-power ultrasonic systems depends on the accurate modelling of the electromechanical behaviour of piezoceramic materials. In practical transducer applications, the relevant operating points are influenced by mechanical preload and heating, both of which give rise to changes in the elastic, dielectric, and piezoelectric material properties. Material parameters identified under idealised, unloaded conditions are therefore insufficient to represent piezoceramic material behaviour under realistic operating conditions. To overcome this limitation, experimental setups are developed that enable the measurement of electrical impedance spectra under controlled thermal and mechanical conditions. The acquired impedance data are used in an inverse identification procedure, in which the behaviour of a finite element forward model is iteratively fitted to the measurements using a block coordinate descent optimisation strategy guided by a sensitivity analysis. This yields effective linear material parameters as a function of temperature and mechanical stress at varying operating points. The identified temperature-dependent parameters, for instance, can be employed in a coupled thermo-electromechanical simulation framework to predict the temperature-dependent material behaviour during operation. The linear identification based on varying operation points provides an initial approximation of the nonlinear material response, establishing a basis for the development of corresponding nonlinear material models.","lang":"eng"}],"publication":"tm - Technisches Messen"},{"_id":"66604","language":[{"iso":"eng"}],"user_id":"44026","conference":{"end_date":"2026-07-24","start_date":"2026-07-19","name":"WCCM-ECCOMAS 2026","location":"München"},"author":[{"id":"44026","full_name":"Friesen, Olga","first_name":"Olga","orcid":"0009-0007-5598-9484","last_name":"Friesen"},{"id":"73952","last_name":"Hölscher","first_name":"Jonas","full_name":"Hölscher, Jonas"},{"first_name":"Carsten","last_name":"Spieker","full_name":"Spieker, Carsten","id":"67587"},{"last_name":"Förstner","first_name":"Jens","orcid":"0000-0001-7059-9862","full_name":"Förstner, Jens","id":"158"},{"id":"11829","full_name":"Claes, Leander","first_name":"Leander","orcid":"0000-0002-4393-268X","last_name":"Claes"}],"title":"Quantitative Modelling of Dynamic Nonlinearity in Piezoelectric Components","year":"2026","status":"public","date_updated":"2026-07-27T15:08:16Z","date_created":"2026-07-27T15:07:31Z","department":[{"_id":"49"}],"type":"conference_abstract","citation":{"bibtex":"@inproceedings{Friesen_Hölscher_Spieker_Förstner_Claes_2026, title={Quantitative Modelling of Dynamic Nonlinearity in Piezoelectric Components}, author={Friesen, Olga and Hölscher, Jonas and Spieker, Carsten and Förstner, Jens and Claes, Leander}, year={2026} }","ama":"Friesen O, Hölscher J, Spieker C, Förstner J, Claes L. Quantitative Modelling of Dynamic Nonlinearity in Piezoelectric Components. In: ; 2026.","mla":"Friesen, Olga, et al. <i>Quantitative Modelling of Dynamic Nonlinearity in Piezoelectric Components</i>. 2026.","short":"O. Friesen, J. Hölscher, C. Spieker, J. Förstner, L. Claes, in: 2026.","chicago":"Friesen, Olga, Jonas Hölscher, Carsten Spieker, Jens Förstner, and Leander Claes. “Quantitative Modelling of Dynamic Nonlinearity in Piezoelectric Components,” 2026.","ieee":"O. Friesen, J. Hölscher, C. Spieker, J. Förstner, and L. Claes, “Quantitative Modelling of Dynamic Nonlinearity in Piezoelectric Components,” presented at the WCCM-ECCOMAS 2026, München, 2026.","apa":"Friesen, O., Hölscher, J., Spieker, C., Förstner, J., &#38; Claes, L. (2026). <i>Quantitative Modelling of Dynamic Nonlinearity in Piezoelectric Components</i>. WCCM-ECCOMAS 2026, München."},"project":[{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}]},{"publication":"2025 International Congress on Ultrasonics","citation":{"apa":"Claes, L., Hölscher, J., Friesen, O., Scheidemann, C., Hemsel, T., &#38; Henning, B. (2025). Estimation of third order elastic constants of piezoceramics using DC biased impedance measurements. <i>2025 International Congress on Ultrasonics</i>, 142–145. <a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a6\">https://doi.org/10.5162/ultrasonic2025/a18-a6</a>","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 <i>2025 International Congress on Ultrasonics</i>, 2025, pp. 142–145, doi: <a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a6\">10.5162/ultrasonic2025/a18-a6</a>.","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.","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 <i>2025 International Congress on Ultrasonics</i>, 142–145. Paderborn: AMA Service GmbH, 2025. <a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a6\">https://doi.org/10.5162/ultrasonic2025/a18-a6</a>.","mla":"Claes, Leander, et al. “Estimation of Third Order Elastic Constants of Piezoceramics Using DC Biased Impedance Measurements.” <i>2025 International Congress on Ultrasonics</i>, AMA Service GmbH, 2025, pp. 142–145, doi:<a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a6\">10.5162/ultrasonic2025/a18-a6</a>.","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: <i>2025 International Congress on Ultrasonics</i>. AMA Service GmbH; 2025:142–145. doi:<a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a6\">10.5162/ultrasonic2025/a18-a6</a>","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={<a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a6\">10.5162/ultrasonic2025/a18-a6</a>}, 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} }"},"project":[{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"date_created":"2025-11-25T12:23:06Z","place":"Paderborn","type":"conference","department":[{"_id":"49"}],"title":"Estimation of third order elastic constants of piezoceramics using DC biased impedance measurements","status":"public","year":"2025","author":[{"id":"11829","full_name":"Claes, Leander","orcid":"0000-0002-4393-268X","first_name":"Leander","last_name":"Claes"},{"first_name":"Jonas","last_name":"Hölscher","full_name":"Hölscher, Jonas","id":"73952"},{"id":"44026","full_name":"Friesen, Olga","last_name":"Friesen","first_name":"Olga"},{"full_name":"Scheidemann, Claus","last_name":"Scheidemann","first_name":"Claus","id":"38259"},{"id":"210","full_name":"Hemsel, Tobias","first_name":"Tobias","last_name":"Hemsel"},{"id":"213","full_name":"Henning, Bernd","last_name":"Henning","first_name":"Bernd"}],"date_updated":"2026-01-13T13:00:31Z","page":"142–145","_id":"62300","language":[{"iso":"eng"}],"publisher":"AMA Service GmbH","user_id":"11829","doi":"10.5162/ultrasonic2025/a18-a6"},{"main_file_link":[{"open_access":"1","url":"https://acta-acustica.edpsciences.org/articles/aacus/abs/2025/01/aacus250049/aacus250049.html"}],"language":[{"iso":"eng"}],"doi":"10.1051/aacus/2025044","title":"Machine Learning-Supported Inverse Measurement Procedure for Broadband, Temperature Dependent Piezoelectric Material Parameters","year":"2025","author":[{"full_name":"Claes, Leander","last_name":"Claes","orcid":"0000-0002-4393-268X","first_name":"Leander","id":"11829"},{"full_name":"Koch, Kevin","last_name":"Koch","first_name":"Kevin"},{"id":"44026","full_name":"Friesen, Olga","first_name":"Olga","last_name":"Friesen"},{"id":"24769","first_name":"Lars","last_name":"Meihost","full_name":"Meihost, Lars"}],"publication_identifier":{"issn":["2681-4617"]},"publication_status":"published","date_updated":"2026-01-05T08:00:05Z","article_type":"original","intvolume":"         9","date_created":"2025-10-27T08:20:53Z","type":"journal_article","department":[{"_id":"49"}],"issue":"65","publication":"Acta Acustica","publisher":"EDP Sciences","_id":"62000","user_id":"11829","volume":9,"status":"public","oa":"1","citation":{"chicago":"Claes, Leander, Kevin Koch, Olga Friesen, and Lars Meihost. “Machine Learning-Supported Inverse Measurement Procedure for Broadband, Temperature Dependent Piezoelectric Material Parameters.” <i>Acta Acustica</i> 9, no. 65 (2025). <a href=\"https://doi.org/10.1051/aacus/2025044\">https://doi.org/10.1051/aacus/2025044</a>.","short":"L. Claes, K. Koch, O. Friesen, L. Meihost, Acta Acustica 9 (2025).","ieee":"L. Claes, K. Koch, O. Friesen, and L. Meihost, “Machine Learning-Supported Inverse Measurement Procedure for Broadband, Temperature Dependent Piezoelectric Material Parameters,” <i>Acta Acustica</i>, vol. 9, no. 65, 2025, doi: <a href=\"https://doi.org/10.1051/aacus/2025044\">10.1051/aacus/2025044</a>.","apa":"Claes, L., Koch, K., Friesen, O., &#38; Meihost, L. (2025). Machine Learning-Supported Inverse Measurement Procedure for Broadband, Temperature Dependent Piezoelectric Material Parameters. <i>Acta Acustica</i>, <i>9</i>(65). <a href=\"https://doi.org/10.1051/aacus/2025044\">https://doi.org/10.1051/aacus/2025044</a>","bibtex":"@article{Claes_Koch_Friesen_Meihost_2025, title={Machine Learning-Supported Inverse Measurement Procedure for Broadband, Temperature Dependent Piezoelectric Material Parameters}, volume={9}, DOI={<a href=\"https://doi.org/10.1051/aacus/2025044\">10.1051/aacus/2025044</a>}, number={65}, journal={Acta Acustica}, publisher={EDP Sciences}, author={Claes, Leander and Koch, Kevin and Friesen, Olga and Meihost, Lars}, year={2025} }","ama":"Claes L, Koch K, Friesen O, Meihost L. Machine Learning-Supported Inverse Measurement Procedure for Broadband, Temperature Dependent Piezoelectric Material Parameters. <i>Acta Acustica</i>. 2025;9(65). doi:<a href=\"https://doi.org/10.1051/aacus/2025044\">10.1051/aacus/2025044</a>","mla":"Claes, Leander, et al. “Machine Learning-Supported Inverse Measurement Procedure for Broadband, Temperature Dependent Piezoelectric Material Parameters.” <i>Acta Acustica</i>, vol. 9, no. 65, EDP Sciences, 2025, doi:<a href=\"https://doi.org/10.1051/aacus/2025044\">10.1051/aacus/2025044</a>."},"project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}]},{"date_updated":"2026-01-05T08:00:48Z","title":"Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed Langevin Transducer","status":"public","year":"2025","author":[{"last_name":"Friesen","first_name":"Olga","full_name":"Friesen, Olga","id":"44026"},{"full_name":"Scheidemann, Claus","last_name":"Scheidemann","first_name":"Claus","id":"38259"},{"last_name":"Claes","first_name":"Leander","orcid":"0000-0002-4393-268X","full_name":"Claes, Leander","id":"11829"},{"id":"210","full_name":"Hemsel, Tobias","first_name":"Tobias","last_name":"Hemsel"},{"id":"213","full_name":"Henning, Bernd","last_name":"Henning","first_name":"Bernd"}],"doi":"10.5162/ultrasonic2025/a18-a4","user_id":"11829","page":"138–141","_id":"62299","publisher":"AMA Service GmbH","language":[{"iso":"eng"}],"project":[{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"publication":"2025 International Congress on Ultrasonics","citation":{"mla":"Friesen, Olga, et al. “Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed Langevin Transducer.” <i>2025 International Congress on Ultrasonics</i>, AMA Service GmbH, 2025, pp. 138–141, doi:<a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a4\">10.5162/ultrasonic2025/a18-a4</a>.","ama":"Friesen O, Scheidemann C, Claes L, Hemsel T, Henning B. Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed Langevin Transducer. In: <i>2025 International Congress on Ultrasonics</i>. AMA Service GmbH; 2025:138–141. doi:<a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a4\">10.5162/ultrasonic2025/a18-a4</a>","bibtex":"@inproceedings{Friesen_Scheidemann_Claes_Hemsel_Henning_2025, place={Paderborn}, title={Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed Langevin Transducer}, DOI={<a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a4\">10.5162/ultrasonic2025/a18-a4</a>}, 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} }","apa":"Friesen, O., Scheidemann, C., Claes, L., Hemsel, T., &#38; Henning, B. (2025). Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed Langevin Transducer. <i>2025 International Congress on Ultrasonics</i>, 138–141. <a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a4\">https://doi.org/10.5162/ultrasonic2025/a18-a4</a>","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 <i>2025 International Congress on Ultrasonics</i>, 2025, pp. 138–141, doi: <a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a4\">10.5162/ultrasonic2025/a18-a4</a>.","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 <i>2025 International Congress on Ultrasonics</i>, 138–141. Paderborn: AMA Service GmbH, 2025. <a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a4\">https://doi.org/10.5162/ultrasonic2025/a18-a4</a>.","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."},"type":"conference","department":[{"_id":"49"},{"_id":"151"}],"place":"Paderborn","date_created":"2025-11-25T12:23:06Z"},{"page":"134–137","language":[{"iso":"eng"}],"_id":"62298","publisher":"AMA Service GmbH","user_id":"11829","doi":"10.5162/ultrasonic2025/a18-a3","status":"public","year":"2025","title":"Identification of temperature-dependent material parameter functions in piezoelectricity","author":[{"last_name":"Kuess","first_name":"Raphael","full_name":"Kuess, Raphael"},{"first_name":"Olga","last_name":"Friesen","full_name":"Friesen, Olga","id":"44026"},{"id":"213","full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning"},{"full_name":"Walther, Andrea","first_name":"Andrea","last_name":"Walther"}],"date_updated":"2026-01-05T08:01:47Z","date_created":"2025-11-25T12:23:06Z","place":"Germany","type":"conference","department":[{"_id":"49"}],"publication":"2025 International Congress on Ultrasonics","citation":{"ieee":"R. Kuess, O. Friesen, B. Henning, and A. Walther, “Identification of temperature-dependent material parameter functions in piezoelectricity,” in <i>2025 International Congress on Ultrasonics</i>, 2025, pp. 134–137, doi: <a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a3\">10.5162/ultrasonic2025/a18-a3</a>.","apa":"Kuess, R., Friesen, O., Henning, B., &#38; Walther, A. (2025). Identification of temperature-dependent material parameter functions in piezoelectricity. <i>2025 International Congress on Ultrasonics</i>, 134–137. <a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a3\">https://doi.org/10.5162/ultrasonic2025/a18-a3</a>","short":"R. Kuess, O. Friesen, B. Henning, A. Walther, in: 2025 International Congress on Ultrasonics, AMA Service GmbH, Germany, 2025, pp. 134–137.","chicago":"Kuess, Raphael, Olga Friesen, Bernd Henning, and Andrea Walther. “Identification of Temperature-Dependent Material Parameter Functions in Piezoelectricity.” In <i>2025 International Congress on Ultrasonics</i>, 134–137. Germany: AMA Service GmbH, 2025. <a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a3\">https://doi.org/10.5162/ultrasonic2025/a18-a3</a>.","mla":"Kuess, Raphael, et al. “Identification of Temperature-Dependent Material Parameter Functions in Piezoelectricity.” <i>2025 International Congress on Ultrasonics</i>, AMA Service GmbH, 2025, pp. 134–137, doi:<a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a3\">10.5162/ultrasonic2025/a18-a3</a>.","bibtex":"@inproceedings{Kuess_Friesen_Henning_Walther_2025, place={Germany}, title={Identification of temperature-dependent material parameter functions in piezoelectricity}, DOI={<a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a3\">10.5162/ultrasonic2025/a18-a3</a>}, 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} }","ama":"Kuess R, Friesen O, Henning B, Walther A. Identification of temperature-dependent material parameter functions in piezoelectricity. In: <i>2025 International Congress on Ultrasonics</i>. AMA Service GmbH; 2025:134–137. doi:<a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a3\">10.5162/ultrasonic2025/a18-a3</a>"},"project":[{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}]},{"user_id":"11829","doi":"10.71568/DASDAGA2025.078","main_file_link":[{"open_access":"1"}],"_id":"59689","language":[{"iso":"eng"}],"date_updated":"2026-01-05T08:02:20Z","title":"Estimation of piezoelectric material parameters under varying electric field conditions","status":"public","year":"2025","author":[{"full_name":"Friesen, Olga","first_name":"Olga","last_name":"Friesen","id":"44026"},{"id":"24769","full_name":"Meihost, Lars","first_name":"Lars","last_name":"Meihost"},{"full_name":"Koch, Kevin","first_name":"Kevin","last_name":"Koch"},{"id":"11829","last_name":"Claes","first_name":"Leander","orcid":"0000-0002-4393-268X","full_name":"Claes, Leander"},{"id":"213","first_name":"Bernd","last_name":"Henning","full_name":"Henning, Bernd"}],"conference":{"end_date":"2025-03-20","location":"Copenhagen","start_date":"2025-03-17","name":"DAS | DAGA 2025 - 51st Annual Meeting on Acoustics"},"type":"conference","department":[{"_id":"49"}],"oa":"1","date_created":"2025-04-25T08:51:32Z","project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"citation":{"apa":"Friesen, O., Meihost, L., Koch, K., Claes, L., &#38; Henning, B. (2025). <i>Estimation of piezoelectric material parameters under varying electric field conditions</i>. DAS | DAGA 2025 - 51st Annual Meeting on Acoustics, Copenhagen. <a href=\"https://doi.org/10.71568/DASDAGA2025.078\">https://doi.org/10.71568/DASDAGA2025.078</a>","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: <a href=\"https://doi.org/10.71568/DASDAGA2025.078\">10.71568/DASDAGA2025.078</a>.","chicago":"Friesen, Olga, Lars Meihost, Kevin Koch, Leander Claes, and Bernd Henning. “Estimation of Piezoelectric Material Parameters under Varying Electric Field Conditions,” 2025. <a href=\"https://doi.org/10.71568/DASDAGA2025.078\">https://doi.org/10.71568/DASDAGA2025.078</a>.","short":"O. Friesen, L. Meihost, K. Koch, L. Claes, B. Henning, in: 2025.","mla":"Friesen, Olga, et al. <i>Estimation of Piezoelectric Material Parameters under Varying Electric Field Conditions</i>. 2025, doi:<a href=\"https://doi.org/10.71568/DASDAGA2025.078\">10.71568/DASDAGA2025.078</a>.","ama":"Friesen O, Meihost L, Koch K, Claes L, Henning B. Estimation of piezoelectric material parameters under varying electric field conditions. In: ; 2025. doi:<a href=\"https://doi.org/10.71568/DASDAGA2025.078\">10.71568/DASDAGA2025.078</a>","bibtex":"@inproceedings{Friesen_Meihost_Koch_Claes_Henning_2025, title={Estimation of piezoelectric material parameters under varying electric field conditions}, DOI={<a href=\"https://doi.org/10.71568/DASDAGA2025.078\">10.71568/DASDAGA2025.078</a>}, author={Friesen, Olga and Meihost, Lars and Koch, Kevin and Claes, Leander and Henning, Bernd}, year={2025} }"}},{"date_created":"2025-11-25T12:23:06Z","place":"Paderborn","type":"conference","keyword":["tet_topic_piezo"],"department":[{"_id":"49"},{"_id":"61"}],"publication":"2025 International Congress on Ultrasonics","citation":{"bibtex":"@inproceedings{Hölscher_Friesen_Claes_Spieker_Förstner_Henning_2025, place={Paderborn}, title={Multiscale thermo-piezoelectric simulations using the finite element method}, DOI={<a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a2\">10.5162/ultrasonic2025/a18-a2</a>}, 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} }","ama":"Hölscher J, Friesen O, Claes L, Spieker C, Förstner J, Henning B. Multiscale thermo-piezoelectric simulations using the finite element method. In: <i>2025 International Congress on Ultrasonics</i>. AMA Service GmbH; 2025:130–133. doi:<a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a2\">10.5162/ultrasonic2025/a18-a2</a>","mla":"Hölscher, Jonas, et al. “Multiscale Thermo-Piezoelectric Simulations Using the Finite Element Method.” <i>2025 International Congress on Ultrasonics</i>, AMA Service GmbH, 2025, pp. 130–133, doi:<a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a2\">10.5162/ultrasonic2025/a18-a2</a>.","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.","chicago":"Hölscher, Jonas, Olga Friesen, Leander Claes, Carsten Spieker, Jens Förstner, and Bernd Henning. “Multiscale Thermo-Piezoelectric Simulations Using the Finite Element Method.” In <i>2025 International Congress on Ultrasonics</i>, 130–133. Paderborn: AMA Service GmbH, 2025. <a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a2\">https://doi.org/10.5162/ultrasonic2025/a18-a2</a>.","ieee":"J. Hölscher, O. Friesen, L. Claes, C. Spieker, J. Förstner, and B. Henning, “Multiscale thermo-piezoelectric simulations using the finite element method,” in <i>2025 International Congress on Ultrasonics</i>, 2025, pp. 130–133, doi: <a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a2\">10.5162/ultrasonic2025/a18-a2</a>.","apa":"Hölscher, J., Friesen, O., Claes, L., Spieker, C., Förstner, J., &#38; Henning, B. (2025). Multiscale thermo-piezoelectric simulations using the finite element method. <i>2025 International Congress on Ultrasonics</i>, 130–133. <a href=\"https://doi.org/10.5162/ultrasonic2025/a18-a2\">https://doi.org/10.5162/ultrasonic2025/a18-a2</a>"},"project":[{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"page":"130–133","_id":"62297","publisher":"AMA Service GmbH","language":[{"iso":"eng"}],"user_id":"158","doi":"10.5162/ultrasonic2025/a18-a2","status":"public","title":"Multiscale thermo-piezoelectric simulations using the finite element method","year":"2025","author":[{"id":"73952","first_name":"Jonas","last_name":"Hölscher","full_name":"Hölscher, Jonas"},{"id":"44026","full_name":"Friesen, Olga","last_name":"Friesen","orcid":"0009-0007-5598-9484","first_name":"Olga"},{"id":"11829","full_name":"Claes, Leander","orcid":"0000-0002-4393-268X","last_name":"Claes","first_name":"Leander"},{"full_name":"Spieker, Carsten","first_name":"Carsten","last_name":"Spieker","id":"67587"},{"id":"158","orcid":"0000-0001-7059-9862","first_name":"Jens","last_name":"Förstner","full_name":"Förstner, Jens"},{"id":"213","full_name":"Henning, Bernd","last_name":"Henning","first_name":"Bernd"}],"date_updated":"2026-06-08T17:55:35Z"},{"status":"public","user_id":"11829","volume":2822,"page":"012125","publisher":"IOP Publishing","_id":"56834","project":[{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"citation":{"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 <i>2023 International Congress on Ultrasonics, Beijing, China</i>, 2024, vol. 2822, p. 012125, doi: <a href=\"https://doi.org/10.1088/1742-6596/2822/1/012125\">10.1088/1742-6596/2822/1/012125</a>.","apa":"Friesen, O., Claes, L., Scheidemann, C., Feldmann, N., Hemsel, T., &#38; Henning, B. (2024). Estimation of temperature-dependent piezoelectric material parameters using ring-shaped specimens. <i>2023 International Congress on Ultrasonics, Beijing, China</i>, <i>2822</i>, 012125. <a href=\"https://doi.org/10.1088/1742-6596/2822/1/012125\">https://doi.org/10.1088/1742-6596/2822/1/012125</a>","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.","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 <i>2023 International Congress on Ultrasonics, Beijing, China</i>, 2822:012125. IOP Publishing, 2024. <a href=\"https://doi.org/10.1088/1742-6596/2822/1/012125\">https://doi.org/10.1088/1742-6596/2822/1/012125</a>.","mla":"Friesen, Olga, et al. “Estimation of Temperature-Dependent Piezoelectric Material Parameters Using Ring-Shaped Specimens.” <i>2023 International Congress on Ultrasonics, Beijing, China</i>, vol. 2822, IOP Publishing, 2024, p. 012125, doi:<a href=\"https://doi.org/10.1088/1742-6596/2822/1/012125\">10.1088/1742-6596/2822/1/012125</a>.","bibtex":"@inproceedings{Friesen_Claes_Scheidemann_Feldmann_Hemsel_Henning_2024, title={Estimation of temperature-dependent piezoelectric material parameters using ring-shaped specimens}, volume={2822}, DOI={<a href=\"https://doi.org/10.1088/1742-6596/2822/1/012125\">10.1088/1742-6596/2822/1/012125</a>}, 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} }","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: <i>2023 International Congress on Ultrasonics, Beijing, China</i>. Vol 2822. IOP Publishing; 2024:012125. doi:<a href=\"https://doi.org/10.1088/1742-6596/2822/1/012125\">10.1088/1742-6596/2822/1/012125</a>"},"oa":"1","date_updated":"2026-01-05T07:58:55Z","intvolume":"      2822","year":"2024","title":"Estimation of temperature-dependent piezoelectric material parameters using ring-shaped specimens","author":[{"first_name":"Olga","last_name":"Friesen","full_name":"Friesen, Olga","id":"44026"},{"id":"11829","full_name":"Claes, Leander","last_name":"Claes","first_name":"Leander","orcid":"0000-0002-4393-268X"},{"first_name":"Claus","last_name":"Scheidemann","full_name":"Scheidemann, Claus","id":"38259"},{"id":"23082","first_name":"Nadine","last_name":"Feldmann","full_name":"Feldmann, Nadine"},{"first_name":"Tobias","last_name":"Hemsel","full_name":"Hemsel, Tobias","id":"210"},{"full_name":"Henning, Bernd","last_name":"Henning","first_name":"Bernd","id":"213"}],"publication_identifier":{"issn":["1742-6596"]},"doi":"10.1088/1742-6596/2822/1/012125","main_file_link":[{"url":"https://iopscience.iop.org/article/10.1088/1742-6596/2822/1/012125","open_access":"1"}],"language":[{"iso":"eng"}],"publication":"2023 International Congress on Ultrasonics, Beijing, China","type":"conference","department":[{"_id":"49"}],"date_created":"2024-10-31T07:59:01Z"},{"citation":{"apa":"Koch, K., Friesen, O., &#38; Claes, L. (2024). <i>Randomised material parameter impedance dataset of piezoelectric rings</i>. Zenodo. <a href=\"https://doi.org/10.5281/zenodo.13143680\">https://doi.org/10.5281/zenodo.13143680</a>","ieee":"K. Koch, O. Friesen, and L. Claes, <i>Randomised material parameter impedance dataset of piezoelectric rings</i>. Zenodo, 2024.","chicago":"Koch, Kevin, Olga Friesen, and Leander Claes. <i>Randomised Material Parameter Impedance Dataset of Piezoelectric Rings</i>. Zenodo, 2024. <a href=\"https://doi.org/10.5281/zenodo.13143680\">https://doi.org/10.5281/zenodo.13143680</a>.","short":"K. Koch, O. Friesen, L. Claes, Randomised Material Parameter Impedance Dataset of Piezoelectric Rings, Zenodo, 2024.","mla":"Koch, Kevin, et al. <i>Randomised Material Parameter Impedance Dataset of Piezoelectric Rings</i>. Zenodo, 2024, doi:<a href=\"https://doi.org/10.5281/zenodo.13143680\">10.5281/zenodo.13143680</a>.","ama":"Koch K, Friesen O, Claes L. <i>Randomised Material Parameter Impedance Dataset of Piezoelectric Rings</i>. Zenodo; 2024. doi:<a href=\"https://doi.org/10.5281/zenodo.13143680\">10.5281/zenodo.13143680</a>","bibtex":"@book{Koch_Friesen_Claes_2024, title={Randomised material parameter impedance dataset of piezoelectric rings}, DOI={<a href=\"https://doi.org/10.5281/zenodo.13143680\">10.5281/zenodo.13143680</a>}, publisher={Zenodo}, author={Koch, Kevin and Friesen, Olga and Claes, Leander}, year={2024} }"},"project":[{"_id":"90","name":"ChaMP: Ein modellbasiertes Messverfahren zur Charakterisierung der frequenzabhängigen Materialeigenschaften von Piezokeramiken unter Verwendung eines einzelnen Probekörperindividuums"},{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"date_created":"2024-07-31T14:10:12Z","type":"research_data","department":[{"_id":"49"}],"title":"Randomised material parameter impedance dataset of piezoelectric rings","status":"public","year":"2024","author":[{"last_name":"Koch","first_name":"Kevin","full_name":"Koch, Kevin"},{"full_name":"Friesen, Olga","last_name":"Friesen","first_name":"Olga","id":"44026"},{"id":"11829","full_name":"Claes, Leander","first_name":"Leander","orcid":"0000-0002-4393-268X","last_name":"Claes"}],"date_updated":"2026-01-05T07:57:46Z","publisher":"Zenodo","_id":"55470","doi":"10.5281/zenodo.13143680","user_id":"11829"},{"date_updated":"2026-01-05T07:57:27Z","author":[{"id":"11829","full_name":"Claes, Leander","first_name":"Leander","orcid":"0000-0002-4393-268X","last_name":"Claes"},{"first_name":"Kevin","last_name":"Koch","full_name":"Koch, Kevin"},{"id":"44026","last_name":"Friesen","first_name":"Olga","full_name":"Friesen, Olga"},{"full_name":"Meihost, Lars","first_name":"Lars","last_name":"Meihost","id":"24769"}],"status":"public","year":"2024","title":"Machine learning in inverse measurement problems: An application to piezoelectric material characterisation","user_id":"11829","_id":"55416","language":[{"iso":"eng"}],"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)"}],"citation":{"chicago":"Claes, Leander, Kevin Koch, Olga Friesen, and Lars Meihost. <i>Machine Learning in Inverse Measurement Problems: An Application to Piezoelectric Material Characterisation</i>. International Workshop on Piezoelectric Materials and Applications (IWPMA), 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.","apa":"Claes, L., Koch, K., Friesen, O., &#38; Meihost, L. (2024). <i>Machine learning in inverse measurement problems: An application to piezoelectric material characterisation</i>.","ieee":"L. Claes, K. Koch, O. Friesen, and L. Meihost, <i>Machine learning in inverse measurement problems: An application to piezoelectric material characterisation</i>. International Workshop on Piezoelectric Materials and Applications (IWPMA), 2024.","ama":"Claes L, Koch K, Friesen O, Meihost L. <i>Machine Learning in Inverse Measurement Problems: An Application to Piezoelectric Material Characterisation</i>.; 2024.","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} }","mla":"Claes, Leander, et al. <i>Machine Learning in Inverse Measurement Problems: An Application to Piezoelectric Material Characterisation</i>. 2024."},"department":[{"_id":"49"}],"type":"misc","place":"International Workshop on Piezoelectric Materials and Applications (IWPMA)","date_created":"2024-07-29T12:34:21Z"},{"date_updated":"2026-01-05T07:59:24Z","publication_status":"published","author":[{"last_name":"Friesen","first_name":"Olga","full_name":"Friesen, Olga","id":"44026"},{"orcid":"0000-0002-4393-268X","last_name":"Claes","first_name":"Leander","full_name":"Claes, Leander","id":"11829"},{"first_name":"Nadine","last_name":"Feldmann","full_name":"Feldmann, Nadine","id":"23082"},{"full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning","id":"213"}],"publication_identifier":{"issn":["2196-7113"]},"status":"public","year":"2024","title":"Estimation of piezoelectric material parameters of ring-shaped specimens","doi":"https://doi.org/10.1515/teme-2024-0107","user_id":"11829","language":[{"iso":"eng"}],"_id":"56777","publisher":"De Gruyter","project":[{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"abstract":[{"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.","lang":"eng"}],"citation":{"bibtex":"@article{Friesen_Claes_Feldmann_Henning_2024, title={Estimation of piezoelectric material parameters of ring-shaped specimens}, DOI={<a href=\"https://doi.org/10.1515/teme-2024-0107\">https://doi.org/10.1515/teme-2024-0107</a>}, journal={tm - Technisches Messen}, publisher={De Gruyter}, author={Friesen, Olga and Claes, Leander and Feldmann, Nadine and Henning, Bernd}, year={2024} }","ama":"Friesen O, Claes L, Feldmann N, Henning B. Estimation of piezoelectric material parameters of ring-shaped specimens. <i>tm - Technisches Messen</i>. Published online 2024. doi:<a href=\"https://doi.org/10.1515/teme-2024-0107\">https://doi.org/10.1515/teme-2024-0107</a>","mla":"Friesen, Olga, et al. “Estimation of Piezoelectric Material Parameters of Ring-Shaped Specimens.” <i>Tm - Technisches Messen</i>, De Gruyter, 2024, doi:<a href=\"https://doi.org/10.1515/teme-2024-0107\">https://doi.org/10.1515/teme-2024-0107</a>.","chicago":"Friesen, Olga, Leander Claes, Nadine Feldmann, and Bernd Henning. “Estimation of Piezoelectric Material Parameters of Ring-Shaped Specimens.” <i>Tm - Technisches Messen</i>, 2024. <a href=\"https://doi.org/10.1515/teme-2024-0107\">https://doi.org/10.1515/teme-2024-0107</a>.","short":"O. Friesen, L. Claes, N. Feldmann, B. Henning, Tm - Technisches Messen (2024).","ieee":"O. Friesen, L. Claes, N. Feldmann, and B. Henning, “Estimation of piezoelectric material parameters of ring-shaped specimens,” <i>tm - Technisches Messen</i>, 2024, doi: <a href=\"https://doi.org/10.1515/teme-2024-0107\">https://doi.org/10.1515/teme-2024-0107</a>.","apa":"Friesen, O., Claes, L., Feldmann, N., &#38; Henning, B. (2024). Estimation of piezoelectric material parameters of ring-shaped specimens. <i>Tm - Technisches Messen</i>. <a href=\"https://doi.org/10.1515/teme-2024-0107\">https://doi.org/10.1515/teme-2024-0107</a>"},"publication":"tm - Technisches Messen","department":[{"_id":"49"}],"type":"journal_article","date_created":"2024-10-29T09:07:00Z"},{"abstract":[{"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.","lang":"ger"}],"publication":"Fortschritte der Akustik - DAGA 2024","type":"conference","date_created":"2024-05-02T13:25:29Z","file":[{"date_created":"2024-05-02T13:38:37Z","creator":"ofriesen","content_type":"application/pdf","file_id":"53826","file_size":453108,"access_level":"open_access","file_name":"daga2024friesen.pdf","date_updated":"2024-05-02T14:07:24Z","relation":"main_file"}],"date_updated":"2026-06-18T12:04:01Z","publication_status":"published","author":[{"first_name":"Olga","orcid":"0009-0007-5598-9484","last_name":"Friesen","full_name":"Friesen, Olga","id":"44026"},{"full_name":"Pasha, Muhammad Ahsan","last_name":"Pasha","first_name":"Muhammad Ahsan"},{"first_name":"Max","last_name":"Schwengelbeck","full_name":"Schwengelbeck, Max"},{"full_name":"Claes, Leander","last_name":"Claes","first_name":"Leander","orcid":"0000-0002-4393-268X","id":"11829"},{"id":"15164","first_name":"Elmar","last_name":"Baumhögger","full_name":"Baumhögger, Elmar"},{"full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning","id":"213"}],"title":"Untersuchung piezoelektrischer Materialeigenschaften unter hydrostatischer Last","year":"2024","language":[{"iso":"ger"}],"project":[{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"citation":{"ieee":"O. Friesen, M. A. Pasha, M. Schwengelbeck, L. Claes, E. Baumhögger, and B. Henning, “Untersuchung piezoelektrischer Materialeigenschaften unter hydrostatischer Last,” in <i>Fortschritte der Akustik - DAGA 2024</i>, Hannover, 2024, pp. 1117–1120.","apa":"Friesen, O., Pasha, M. A., Schwengelbeck, M., Claes, L., Baumhögger, E., &#38; Henning, B. (2024). Untersuchung piezoelektrischer Materialeigenschaften unter hydrostatischer Last. <i>Fortschritte der Akustik - DAGA 2024</i>, 1117–1120.","chicago":"Friesen, Olga, Muhammad Ahsan Pasha, Max Schwengelbeck, Leander Claes, Elmar Baumhögger, and Bernd Henning. “Untersuchung piezoelektrischer Materialeigenschaften unter hydrostatischer Last.” In <i>Fortschritte der Akustik - DAGA 2024</i>, 1117–1120, 2024.","short":"O. Friesen, M.A. Pasha, M. Schwengelbeck, L. Claes, E. Baumhögger, B. Henning, in: Fortschritte der Akustik - DAGA 2024, 2024, pp. 1117–1120.","mla":"Friesen, Olga, et al. “Untersuchung piezoelektrischer Materialeigenschaften unter hydrostatischer Last.” <i>Fortschritte der Akustik - DAGA 2024</i>, 2024, pp. 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} }","ama":"Friesen O, Pasha MA, Schwengelbeck M, Claes L, Baumhögger E, Henning B. Untersuchung piezoelektrischer Materialeigenschaften unter hydrostatischer Last. 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Influence of Temperature and Pre-Stress on the Piezoelectric Material Behavior of Ring-Shaped Ceramics. 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