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A model for heat generation by acoustic waves in piezoelectric materials: Global large-data solutions. <i>Mathematical Models and Methods in Applied Sciences</i>. 2025;35(11):2465-2512. doi:<a href=\"https://doi.org/10.1142/s0218202525500447\">10.1142/s0218202525500447</a>"},"intvolume":"        35","page":"2465-2512","user_id":"11829","department":[{"_id":"90"},{"_id":"49"}],"project":[{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"_id":"54837","type":"journal_article","status":"public"},{"publication":"2025 International Congress on Ultrasonics","type":"conference","status":"public","_id":"62299","project":[{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"department":[{"_id":"49"},{"_id":"151"}],"user_id":"11829","language":[{"iso":"eng"}],"year":"2025","place":"Paderborn","page":"138–141","citation":{"apa":"Friesen, O., Scheidemann, C., Claes, L., Hemsel, T., &#38; Henning, B. 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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>","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>."},"date_updated":"2026-01-05T08:00:48Z","publisher":"AMA Service GmbH","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"},{"full_name":"Claes, Leander","id":"11829","orcid":"0000-0002-4393-268X","last_name":"Claes","first_name":"Leander"},{"last_name":"Hemsel","id":"210","full_name":"Hemsel, Tobias","first_name":"Tobias"},{"last_name":"Henning","full_name":"Henning, Bernd","id":"213","first_name":"Bernd"}],"date_created":"2025-11-25T12:23:06Z","title":"Sensitivity Analysis and Material Parameter Estimation of a Pre-Stressed Langevin Transducer","doi":"10.5162/ultrasonic2025/a18-a4"},{"status":"public","type":"conference","publication":"2025 International Congress on Ultrasonics","language":[{"iso":"eng"}],"project":[{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"_id":"62298","user_id":"11829","department":[{"_id":"49"}],"place":"Germany","year":"2025","citation":{"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>","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} }","short":"R. Kuess, O. Friesen, B. Henning, A. Walther, in: 2025 International Congress on Ultrasonics, AMA Service GmbH, Germany, 2025, pp. 134–137.","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>.","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>.","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>.","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>"},"page":"134–137","title":"Identification of temperature-dependent material parameter functions in piezoelectricity","doi":"10.5162/ultrasonic2025/a18-a3","publisher":"AMA Service GmbH","date_updated":"2026-01-05T08:01:47Z","author":[{"last_name":"Kuess","full_name":"Kuess, Raphael","first_name":"Raphael"},{"id":"44026","full_name":"Friesen, Olga","last_name":"Friesen","first_name":"Olga"},{"last_name":"Henning","full_name":"Henning, Bernd","id":"213","first_name":"Bernd"},{"first_name":"Andrea","full_name":"Walther, Andrea","last_name":"Walther"}],"date_created":"2025-11-25T12:23:06Z"},{"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>","short":"O. Friesen, L. Meihost, K. Koch, L. Claes, B. Henning, in: 2025.","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} }","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>","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>."},"year":"2025","main_file_link":[{"open_access":"1"}],"doi":"10.71568/DASDAGA2025.078","conference":{"start_date":"2025-03-17","name":"DAS | DAGA 2025 - 51st Annual Meeting on Acoustics","location":"Copenhagen","end_date":"2025-03-20"},"title":"Estimation of piezoelectric material parameters under varying electric field conditions","date_created":"2025-04-25T08:51:32Z","author":[{"first_name":"Olga","full_name":"Friesen, Olga","id":"44026","last_name":"Friesen"},{"first_name":"Lars","id":"24769","full_name":"Meihost, Lars","last_name":"Meihost"},{"first_name":"Kevin","last_name":"Koch","full_name":"Koch, Kevin"},{"id":"11829","full_name":"Claes, Leander","last_name":"Claes","orcid":"0000-0002-4393-268X","first_name":"Leander"},{"first_name":"Bernd","id":"213","full_name":"Henning, Bernd","last_name":"Henning"}],"oa":"1","date_updated":"2026-01-05T08:02:20Z","status":"public","type":"conference","language":[{"iso":"eng"}],"user_id":"11829","department":[{"_id":"49"}],"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"}],"_id":"59689"},{"title":"Untersuchung piezoelektrischer Materialeigenschaften unter hydrostatischer Last","date_created":"2024-05-02T13:25:29Z","year":"2024","ddc":["620"],"language":[{"iso":"ger"}],"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."}],"file":[{"date_created":"2024-05-02T13:38:37Z","creator":"ofriesen","date_updated":"2024-05-02T14:07:24Z","file_id":"53826","file_name":"daga2024friesen.pdf","access_level":"open_access","file_size":453108,"content_type":"application/pdf","relation":"main_file"}],"publication":"Fortschritte der Akustik - DAGA 2024","conference":{"start_date":"2024-03-18","name":"DAGA 2024 - 50. JAHRESTAGUNG FÜR AKUSTIK","location":"Hannover","end_date":"2024-03-21"},"oa":"1","date_updated":"2026-01-05T07:56:21Z","author":[{"first_name":"Olga","last_name":"Friesen","full_name":"Friesen, Olga","id":"44026"},{"last_name":"Pasha","full_name":"Pasha, Muhammad Ahsan","first_name":"Muhammad Ahsan"},{"full_name":"Schwengelbeck, Max","last_name":"Schwengelbeck","first_name":"Max"},{"orcid":"0000-0002-4393-268X","last_name":"Claes","id":"11829","full_name":"Claes, Leander","first_name":"Leander"},{"last_name":"Baumhögger","id":"15164","full_name":"Baumhögger, Elmar","first_name":"Elmar"},{"full_name":"Henning, Bernd","id":"213","last_name":"Henning","first_name":"Bernd"}],"citation":{"ama":"Friesen O, Pasha MA, Schwengelbeck M, Claes L, Baumhögger E, Henning B. Untersuchung piezoelektrischer Materialeigenschaften unter hydrostatischer Last. In: <i>Fortschritte der Akustik - DAGA 2024</i>. ; 2024:1117–1120.","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.","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.","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.","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} }","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."},"page":"1117–1120","publication_status":"published","has_accepted_license":"1","file_date_updated":"2024-05-02T14:07:24Z","project":[{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"_id":"53822","user_id":"11829","status":"public","type":"conference"},{"ddc":["620"],"file_date_updated":"2024-05-02T14:06:28Z","language":[{"iso":"ger"}],"_id":"53824","project":[{"name":"ChaMP: Ein modellbasiertes Messverfahren zur Charakterisierung der frequenzabhängigen Materialeigenschaften von Piezokeramiken unter Verwendung eines einzelnen Probekörperindividuums","_id":"90"},{"_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)"}],"department":[{"_id":"49"}],"user_id":"11829","editor":[{"full_name":"Gesellschaft für Akustik e.V., Deutsche ","last_name":"Gesellschaft für Akustik e.V.","first_name":"Deutsche "}],"status":"public","file":[{"date_updated":"2024-05-02T14:06:28Z","creator":"leanderc","date_created":"2024-05-02T13:36:51Z","file_size":365911,"file_name":"daga2024koch.pdf","access_level":"open_access","file_id":"53825","content_type":"application/pdf","relation":"main_file"}],"publication":"Fortschritte der Akustik - DAGA 2024","type":"conference","title":"Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze","conference":{"start_date":"2024-03-18","end_date":"2024-03-21"},"date_updated":"2026-01-05T07:56:42Z","oa":"1","author":[{"full_name":"Koch, Kevin","last_name":"Koch","first_name":"Kevin"},{"first_name":"Leander","orcid":"0000-0002-4393-268X","last_name":"Claes","id":"11829","full_name":"Claes, Leander"},{"first_name":"Benjamin","full_name":"Jurgelucks, Benjamin","last_name":"Jurgelucks"},{"last_name":"Meihost","id":"24769","full_name":"Meihost, Lars","first_name":"Lars"},{"last_name":"Henning","id":"213","full_name":"Henning, Bernd","first_name":"Bernd"}],"date_created":"2024-05-02T13:34:01Z","year":"2024","page":"1113–1116","citation":{"apa":"Koch, K., Claes, L., Jurgelucks, B., Meihost, L., &#38; Henning, B. (2024). Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze. In D. Gesellschaft für Akustik e.V. (Ed.), <i>Fortschritte der Akustik - DAGA 2024</i> (pp. 1113–1116).","mla":"Koch, Kevin, et al. “Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze.” <i>Fortschritte der Akustik - DAGA 2024</i>, 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.","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} }","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. <i>Fortschritte der Akustik - DAGA 2024</i>. ; 2024:1113–1116.","ieee":"K. Koch, L. Claes, B. Jurgelucks, L. Meihost, and B. Henning, “Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze,” in <i>Fortschritte der Akustik - DAGA 2024</i>, 2024, pp. 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 <i>Fortschritte der Akustik - DAGA 2024</i>, edited by Deutsche  Gesellschaft für Akustik e.V., 1113–1116, 2024."},"has_accepted_license":"1"},{"volume":2822,"author":[{"first_name":"Olga","last_name":"Friesen","full_name":"Friesen, Olga","id":"44026"},{"first_name":"Leander","id":"11829","full_name":"Claes, Leander","orcid":"0000-0002-4393-268X","last_name":"Claes"},{"first_name":"Claus","last_name":"Scheidemann","id":"38259","full_name":"Scheidemann, Claus"},{"full_name":"Feldmann, Nadine","id":"23082","last_name":"Feldmann","first_name":"Nadine"},{"full_name":"Hemsel, Tobias","id":"210","last_name":"Hemsel","first_name":"Tobias"},{"full_name":"Henning, Bernd","id":"213","last_name":"Henning","first_name":"Bernd"}],"date_created":"2024-10-31T07:59:01Z","date_updated":"2026-01-05T07:58:55Z","publisher":"IOP Publishing","oa":"1","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"}],"title":"Estimation of temperature-dependent piezoelectric material parameters using ring-shaped specimens","publication_identifier":{"issn":["1742-6596"]},"intvolume":"      2822","page":"012125","citation":{"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.","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} }","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>","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>.","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>.","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>"},"year":"2024","department":[{"_id":"49"}],"user_id":"11829","_id":"56834","project":[{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"language":[{"iso":"eng"}],"publication":"2023 International Congress on Ultrasonics, Beijing, China","type":"conference","status":"public"},{"citation":{"short":"K. Koch, O. Friesen, L. Claes, Randomised Material Parameter Impedance Dataset of Piezoelectric Rings, Zenodo, 2024.","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} }","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>.","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>","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>.","ieee":"K. Koch, O. Friesen, and L. Claes, <i>Randomised material parameter impedance dataset of piezoelectric rings</i>. Zenodo, 2024.","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>"},"year":"2024","author":[{"last_name":"Koch","full_name":"Koch, Kevin","first_name":"Kevin"},{"first_name":"Olga","last_name":"Friesen","full_name":"Friesen, Olga","id":"44026"},{"full_name":"Claes, Leander","id":"11829","last_name":"Claes","orcid":"0000-0002-4393-268X","first_name":"Leander"}],"date_created":"2024-07-31T14:10:12Z","publisher":"Zenodo","date_updated":"2026-01-05T07:57:46Z","doi":"10.5281/zenodo.13143680","title":"Randomised material parameter impedance dataset of piezoelectric rings","type":"research_data","status":"public","department":[{"_id":"49"}],"user_id":"11829","_id":"55470","project":[{"name":"ChaMP: Ein modellbasiertes Messverfahren zur Charakterisierung der frequenzabhängigen Materialeigenschaften von Piezokeramiken unter Verwendung eines einzelnen Probekörperindividuums","_id":"90"},{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}]},{"_id":"53662","project":[{"name":"ChaMP: Ein modellbasiertes Messverfahren zur Charakterisierung der frequenzabhängigen Materialeigenschaften von Piezokeramiken unter Verwendung eines einzelnen Probekörperindividuums","_id":"90"},{"name":"PC2: 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)"}],"department":[{"_id":"49"}],"user_id":"11829","type":"research_data","status":"public","date_updated":"2026-01-05T07:56:58Z","publisher":"zenodo","author":[{"first_name":"Kevin","full_name":"Koch, Kevin","last_name":"Koch"},{"last_name":"Claes","orcid":"0000-0002-4393-268X","id":"11829","full_name":"Claes, Leander","first_name":"Leander"}],"date_created":"2024-04-25T13:54:49Z","title":"Randomised material parameter piezoelectric impedance dataset with structured electrodes","doi":"10.5281/ZENODO.11064206","year":"2024","citation":{"apa":"Koch, K., &#38; Claes, L. (2024). <i>Randomised material parameter piezoelectric impedance dataset with structured electrodes</i>. zenodo. <a href=\"https://doi.org/10.5281/ZENODO.11064206\">https://doi.org/10.5281/ZENODO.11064206</a>","bibtex":"@book{Koch_Claes_2024, title={Randomised material parameter piezoelectric impedance dataset with structured electrodes}, DOI={<a href=\"https://doi.org/10.5281/ZENODO.11064206\">10.5281/ZENODO.11064206</a>}, publisher={zenodo}, author={Koch, Kevin and Claes, Leander}, year={2024} }","short":"K. Koch, L. Claes, Randomised Material Parameter Piezoelectric Impedance Dataset with Structured Electrodes, zenodo, 2024.","mla":"Koch, Kevin, and Leander Claes. <i>Randomised Material Parameter Piezoelectric Impedance Dataset with Structured Electrodes</i>. zenodo, 2024, doi:<a href=\"https://doi.org/10.5281/ZENODO.11064206\">10.5281/ZENODO.11064206</a>.","chicago":"Koch, Kevin, and Leander Claes. <i>Randomised Material Parameter Piezoelectric Impedance Dataset with Structured Electrodes</i>. zenodo, 2024. <a href=\"https://doi.org/10.5281/ZENODO.11064206\">https://doi.org/10.5281/ZENODO.11064206</a>.","ieee":"K. Koch and L. Claes, <i>Randomised material parameter piezoelectric impedance dataset with structured electrodes</i>. zenodo, 2024.","ama":"Koch K, Claes L. <i>Randomised Material Parameter Piezoelectric Impedance Dataset with Structured Electrodes</i>. zenodo; 2024. doi:<a href=\"https://doi.org/10.5281/ZENODO.11064206\">10.5281/ZENODO.11064206</a>"}},{"citation":{"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>.","mla":"Claes, Leander, et al. <i>Machine Learning in Inverse Measurement Problems: An Application to Piezoelectric Material Characterisation</i>. 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.","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. <i>Machine Learning in Inverse Measurement Problems: An Application to Piezoelectric Material Characterisation</i>. International Workshop on Piezoelectric Materials and Applications (IWPMA), 2024.","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."},"place":"International Workshop on Piezoelectric Materials and Applications (IWPMA)","year":"2024","title":"Machine learning in inverse measurement problems: An application to piezoelectric material characterisation","date_created":"2024-07-29T12:34:21Z","author":[{"first_name":"Leander","orcid":"0000-0002-4393-268X","last_name":"Claes","full_name":"Claes, Leander","id":"11829"},{"full_name":"Koch, Kevin","last_name":"Koch","first_name":"Kevin"},{"first_name":"Olga","last_name":"Friesen","id":"44026","full_name":"Friesen, Olga"},{"last_name":"Meihost","full_name":"Meihost, Lars","id":"24769","first_name":"Lars"}],"date_updated":"2026-01-05T07:57:27Z","status":"public","type":"misc","language":[{"iso":"eng"}],"user_id":"11829","department":[{"_id":"49"}],"project":[{"name":"PC2: 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)"}],"_id":"55416"},{"title":"Estimation of piezoelectric material parameters of ring-shaped specimens","doi":"https://doi.org/10.1515/teme-2024-0107","date_updated":"2026-01-05T07:59:24Z","publisher":"De Gruyter","date_created":"2024-10-29T09:07:00Z","author":[{"first_name":"Olga","last_name":"Friesen","full_name":"Friesen, Olga","id":"44026"},{"first_name":"Leander","full_name":"Claes, Leander","id":"11829","last_name":"Claes","orcid":"0000-0002-4393-268X"},{"first_name":"Nadine","last_name":"Feldmann","id":"23082","full_name":"Feldmann, Nadine"},{"first_name":"Bernd","last_name":"Henning","full_name":"Henning, Bernd","id":"213"}],"year":"2024","citation":{"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>","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>.","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>.","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>.","short":"O. Friesen, L. Claes, N. Feldmann, B. Henning, Tm - Technisches Messen (2024).","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} }","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_status":"published","publication_identifier":{"issn":["2196-7113"]},"language":[{"iso":"eng"}],"project":[{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"_id":"56777","user_id":"11829","department":[{"_id":"49"}],"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"}],"status":"public","type":"journal_article","publication":"tm - Technisches Messen"},{"doi":"10.1515/teme-2024-0099","main_file_link":[{"url":"https://www.degruyter.com/document/doi/10.1515/teme-2024-0099/html"}],"title":"Neuronale Netze zur Startwertschätzung bei der Identifikation piezoelektrischer Materialparameter","date_created":"2024-05-17T08:26:55Z","author":[{"first_name":"Kevin","full_name":"Koch, Kevin","last_name":"Koch"},{"first_name":"Leander","orcid":"0000-0002-4393-268X","last_name":"Claes","full_name":"Claes, Leander","id":"11829"},{"first_name":"Benjamin","last_name":"Jurgelucks","full_name":"Jurgelucks, Benjamin"},{"first_name":"Lars","id":"24769","full_name":"Meihost, Lars","last_name":"Meihost"}],"publisher":"Walter de Gruyter GmbH","date_updated":"2026-01-05T07:59:09Z","citation":{"apa":"Koch, K., Claes, L., Jurgelucks, B., &#38; Meihost, L. (2024). Neuronale Netze zur Startwertschätzung bei der Identifikation piezoelektrischer Materialparameter. <i>Tm - Technisches Messen</i>. <a href=\"https://doi.org/10.1515/teme-2024-0099\">https://doi.org/10.1515/teme-2024-0099</a>","short":"K. Koch, L. Claes, B. Jurgelucks, L. Meihost, Tm - Technisches Messen (2024).","mla":"Koch, Kevin, et al. “Neuronale Netze Zur Startwertschätzung Bei Der Identifikation Piezoelektrischer Materialparameter.” <i>Tm - Technisches Messen</i>, Walter de Gruyter GmbH, 2024, doi:<a href=\"https://doi.org/10.1515/teme-2024-0099\">10.1515/teme-2024-0099</a>.","bibtex":"@article{Koch_Claes_Jurgelucks_Meihost_2024, title={Neuronale Netze zur Startwertschätzung bei der Identifikation piezoelektrischer Materialparameter}, DOI={<a href=\"https://doi.org/10.1515/teme-2024-0099\">10.1515/teme-2024-0099</a>}, 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.” <i>Tm - Technisches Messen</i>, 2024. <a href=\"https://doi.org/10.1515/teme-2024-0099\">https://doi.org/10.1515/teme-2024-0099</a>.","ieee":"K. Koch, L. Claes, B. Jurgelucks, and L. Meihost, “Neuronale Netze zur Startwertschätzung bei der Identifikation piezoelektrischer Materialparameter,” <i>tm - Technisches Messen</i>, 2024, doi: <a href=\"https://doi.org/10.1515/teme-2024-0099\">10.1515/teme-2024-0099</a>.","ama":"Koch K, Claes L, Jurgelucks B, Meihost L. Neuronale Netze zur Startwertschätzung bei der Identifikation piezoelektrischer Materialparameter. <i>tm - Technisches Messen</i>. Published online 2024. doi:<a href=\"https://doi.org/10.1515/teme-2024-0099\">10.1515/teme-2024-0099</a>"},"year":"2024","quality_controlled":"1","language":[{"iso":"eng"}],"alternative_title":["Neural networks for initial value estimation in the identification of piezoelectric material parameters"],"article_type":"original","department":[{"_id":"49"}],"user_id":"11829","_id":"54314","project":[{"name":"ChaMP: Ein modellbasiertes Messverfahren zur Charakterisierung der frequenzabhängigen Materialeigenschaften von Piezokeramiken unter Verwendung eines einzelnen Probekörperindividuums","_id":"90"},{"name":"PC2: 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)"}],"status":"public","publication":"tm - Technisches Messen","type":"journal_article"}]