[{"conference":{"start_date":"2024-03-18","end_date":"2024-03-21"},"status":"public","has_accepted_license":"1","_id":"53824","page":"1113–1116","editor":[{"last_name":"Gesellschaft für Akustik e.V.","first_name":"Deutsche ","full_name":"Gesellschaft für Akustik e.V., Deutsche "}],"ddc":["620"],"user_id":"11829","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. <i>Fortschritte der Akustik - DAGA 2024</i>. ; 2024:1113–1116.","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} }","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.","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.","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.","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).","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."},"file_date_updated":"2024-05-02T14:06:28Z","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"}],"oa":"1","author":[{"last_name":"Koch","first_name":"Kevin","full_name":"Koch, Kevin"},{"id":"11829","full_name":"Claes, Leander","first_name":"Leander","last_name":"Claes","orcid":"0000-0002-4393-268X"},{"full_name":"Jurgelucks, Benjamin","last_name":"Jurgelucks","first_name":"Benjamin"},{"id":"24769","full_name":"Meihost, Lars","last_name":"Meihost","first_name":"Lars"},{"id":"213","last_name":"Henning","first_name":"Bernd","full_name":"Henning, Bernd"}],"year":"2024","title":"Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze","date_updated":"2026-01-05T07:56:42Z","language":[{"iso":"ger"}],"publication":"Fortschritte der Akustik - DAGA 2024","date_created":"2024-05-02T13:34:01Z","file":[{"creator":"leanderc","date_created":"2024-05-02T13:36:51Z","access_level":"open_access","file_size":365911,"file_name":"daga2024koch.pdf","date_updated":"2024-05-02T14:06:28Z","relation":"main_file","content_type":"application/pdf","file_id":"53825"}],"department":[{"_id":"49"}],"type":"conference"},{"oa":"1","project":[{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"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.","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>.","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>","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>","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} }","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>."},"volume":2822,"user_id":"11829","_id":"56834","publisher":"IOP Publishing","page":"012125","status":"public","department":[{"_id":"49"}],"type":"conference","date_created":"2024-10-31T07:59:01Z","publication":"2023 International Congress on Ultrasonics, Beijing, China","doi":"10.1088/1742-6596/2822/1/012125","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://iopscience.iop.org/article/10.1088/1742-6596/2822/1/012125","open_access":"1"}],"intvolume":"      2822","date_updated":"2026-01-05T07:58:55Z","author":[{"full_name":"Friesen, Olga","last_name":"Friesen","first_name":"Olga","id":"44026"},{"full_name":"Claes, Leander","last_name":"Claes","first_name":"Leander","orcid":"0000-0002-4393-268X","id":"11829"},{"full_name":"Scheidemann, Claus","last_name":"Scheidemann","first_name":"Claus","id":"38259"},{"full_name":"Feldmann, Nadine","first_name":"Nadine","last_name":"Feldmann","id":"23082"},{"id":"210","full_name":"Hemsel, Tobias","last_name":"Hemsel","first_name":"Tobias"},{"id":"213","last_name":"Henning","first_name":"Bernd","full_name":"Henning, Bernd"}],"publication_identifier":{"issn":["1742-6596"]},"year":"2024","title":"Estimation of temperature-dependent piezoelectric material parameters using ring-shaped specimens"},{"author":[{"full_name":"Koch, Kevin","first_name":"Kevin","last_name":"Koch"},{"id":"44026","last_name":"Friesen","first_name":"Olga","full_name":"Friesen, Olga"},{"id":"11829","orcid":"0000-0002-4393-268X","first_name":"Leander","last_name":"Claes","full_name":"Claes, Leander"}],"year":"2024","title":"Randomised material parameter impedance dataset of piezoelectric rings","status":"public","date_updated":"2026-01-05T07:57:46Z","_id":"55470","publisher":"Zenodo","doi":"10.5281/zenodo.13143680","user_id":"11829","citation":{"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} }","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.","short":"K. Koch, O. Friesen, L. Claes, Randomised Material Parameter Impedance Dataset of Piezoelectric Rings, 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>."},"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"}],"date_created":"2024-07-31T14:10:12Z","department":[{"_id":"49"}],"type":"research_data"},{"_id":"53662","publisher":"zenodo","user_id":"11829","doi":"10.5281/ZENODO.11064206","status":"public","title":"Randomised material parameter piezoelectric impedance dataset with structured electrodes","year":"2024","author":[{"first_name":"Kevin","last_name":"Koch","full_name":"Koch, Kevin"},{"last_name":"Claes","first_name":"Leander","orcid":"0000-0002-4393-268X","full_name":"Claes, Leander","id":"11829"}],"date_updated":"2026-01-05T07:56:58Z","date_created":"2024-04-25T13:54:49Z","type":"research_data","department":[{"_id":"49"}],"citation":{"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} }","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>","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>.","short":"K. Koch, L. Claes, Randomised Material Parameter Piezoelectric Impedance Dataset with Structured Electrodes, zenodo, 2024.","ieee":"K. Koch and L. Claes, <i>Randomised material parameter piezoelectric impedance dataset with structured electrodes</i>. zenodo, 2024.","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>"},"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"}],"type":"misc","date_created":"2024-07-29T12:34:21Z","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)"}],"citation":{"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.","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.","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.","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."},"user_id":"11829","language":[{"iso":"eng"}],"_id":"55416","date_updated":"2026-01-05T07:57:27Z","author":[{"full_name":"Claes, Leander","last_name":"Claes","first_name":"Leander","orcid":"0000-0002-4393-268X","id":"11829"},{"full_name":"Koch, Kevin","last_name":"Koch","first_name":"Kevin"},{"id":"44026","full_name":"Friesen, Olga","last_name":"Friesen","first_name":"Olga"},{"full_name":"Meihost, Lars","last_name":"Meihost","first_name":"Lars","id":"24769"}],"title":"Machine learning in inverse measurement problems: An application to piezoelectric material characterisation","status":"public","year":"2024"},{"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."}],"project":[{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"publication":"tm - Technisches Messen","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>.","short":"O. Friesen, L. Claes, N. Feldmann, B. Henning, Tm - Technisches Messen (2024).","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>.","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>"},"type":"journal_article","department":[{"_id":"49"}],"date_created":"2024-10-29T09:07:00Z","publication_status":"published","date_updated":"2026-01-05T07:59:24Z","title":"Estimation of piezoelectric material parameters of ring-shaped specimens","year":"2024","status":"public","publication_identifier":{"issn":["2196-7113"]},"author":[{"first_name":"Olga","last_name":"Friesen","full_name":"Friesen, Olga","id":"44026"},{"id":"11829","full_name":"Claes, Leander","orcid":"0000-0002-4393-268X","last_name":"Claes","first_name":"Leander"},{"id":"23082","last_name":"Feldmann","first_name":"Nadine","full_name":"Feldmann, Nadine"},{"full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning","id":"213"}],"user_id":"11829","doi":"https://doi.org/10.1515/teme-2024-0107","publisher":"De Gruyter","_id":"56777","language":[{"iso":"eng"}]},{"type":"journal_article","department":[{"_id":"49"}],"date_created":"2024-05-17T08:26:55Z","quality_controlled":"1","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"},{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"publication":"tm - Technisches Messen","citation":{"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} }","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>","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>.","short":"K. Koch, L. Claes, B. Jurgelucks, L. Meihost, Tm - Technisches Messen (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>.","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>"},"doi":"10.1515/teme-2024-0099","user_id":"11829","alternative_title":["Neural networks for initial value estimation in the identification of piezoelectric material parameters"],"main_file_link":[{"url":"https://www.degruyter.com/document/doi/10.1515/teme-2024-0099/html"}],"language":[{"iso":"eng"}],"_id":"54314","publisher":"Walter de Gruyter GmbH","date_updated":"2026-01-05T07:59:09Z","article_type":"original","title":"Neuronale Netze zur Startwertschätzung bei der Identifikation piezoelektrischer Materialparameter","status":"public","year":"2024","author":[{"last_name":"Koch","first_name":"Kevin","full_name":"Koch, Kevin"},{"full_name":"Claes, Leander","last_name":"Claes","first_name":"Leander","orcid":"0000-0002-4393-268X","id":"11829"},{"last_name":"Jurgelucks","first_name":"Benjamin","full_name":"Jurgelucks, Benjamin"},{"id":"24769","full_name":"Meihost, Lars","first_name":"Lars","last_name":"Meihost"}]},{"project":[{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"citation":{"chicago":"Nikolić, Vanja, and Michael Winkler. “L∞ Blow-up in the Jordan-Moore-Gibson-Thompson Equation.” <i>Nonlinear Analysis</i> 247 (2024). <a href=\"https://doi.org/10.1016/j.na.2024.113600\">https://doi.org/10.1016/j.na.2024.113600</a>.","ama":"Nikolić V, Winkler M. L∞ blow-up in the Jordan-Moore-Gibson-Thompson equation. <i>Nonlinear Analysis</i>. 2024;247. doi:<a href=\"https://doi.org/10.1016/j.na.2024.113600\">10.1016/j.na.2024.113600</a>","short":"V. Nikolić, M. Winkler, Nonlinear Analysis 247 (2024).","bibtex":"@article{Nikolić_Winkler_2024, title={L∞ blow-up in the Jordan-Moore-Gibson-Thompson equation}, volume={247}, DOI={<a href=\"https://doi.org/10.1016/j.na.2024.113600\">10.1016/j.na.2024.113600</a>}, number={113600}, journal={Nonlinear Analysis}, publisher={Elsevier BV}, author={Nikolić, Vanja and Winkler, Michael}, year={2024} }","mla":"Nikolić, Vanja, and Michael Winkler. “L∞ Blow-up in the Jordan-Moore-Gibson-Thompson Equation.” <i>Nonlinear Analysis</i>, vol. 247, 113600, Elsevier BV, 2024, doi:<a href=\"https://doi.org/10.1016/j.na.2024.113600\">10.1016/j.na.2024.113600</a>.","apa":"Nikolić, V., &#38; Winkler, M. (2024). L∞ blow-up in the Jordan-Moore-Gibson-Thompson equation. <i>Nonlinear Analysis</i>, <i>247</i>, Article 113600. <a href=\"https://doi.org/10.1016/j.na.2024.113600\">https://doi.org/10.1016/j.na.2024.113600</a>","ieee":"V. Nikolić and M. Winkler, “L∞ blow-up in the Jordan-Moore-Gibson-Thompson equation,” <i>Nonlinear Analysis</i>, vol. 247, Art. no. 113600, 2024, doi: <a href=\"https://doi.org/10.1016/j.na.2024.113600\">10.1016/j.na.2024.113600</a>."},"volume":247,"user_id":"11829","_id":"57820","publisher":"Elsevier BV","status":"public","department":[{"_id":"90"}],"type":"journal_article","date_created":"2024-12-18T07:13:19Z","publication":"Nonlinear Analysis","doi":"10.1016/j.na.2024.113600","language":[{"iso":"eng"}],"article_number":"113600","intvolume":"       247","publication_status":"published","date_updated":"2026-01-05T08:02:36Z","author":[{"full_name":"Nikolić, Vanja","first_name":"Vanja","last_name":"Nikolić"},{"full_name":"Winkler, Michael","last_name":"Winkler","first_name":"Michael","id":"31496"}],"publication_identifier":{"issn":["0362-546X"]},"year":"2024","title":"L∞ blow-up in the Jordan-Moore-Gibson-Thompson equation"},{"project":[{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"file_date_updated":"2026-03-02T11:00:13Z","citation":{"apa":"Scheidemann, C., Hemsel, T., &#38; Sextro, W. (2024). <i>Characteristic behavior of lead-free and lead-containing piezo ring ceramics in ultrasonic transducers</i>. 21nd International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA), Hannover, Germany.","ieee":"C. Scheidemann, T. Hemsel, and W. Sextro, “Characteristic behavior of lead-free and lead-containing piezo ring ceramics in ultrasonic transducers,” presented at the 21nd International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA), Hannover, Germany, 2024.","short":"C. Scheidemann, T. Hemsel, W. Sextro, in: 2024.","chicago":"Scheidemann, Claus, Tobias Hemsel, and Walter Sextro. “Characteristic Behavior of Lead-Free and Lead-Containing Piezo Ring Ceramics in Ultrasonic Transducers,” 2024.","mla":"Scheidemann, Claus, et al. <i>Characteristic Behavior of Lead-Free and Lead-Containing Piezo Ring Ceramics in Ultrasonic Transducers</i>. 2024.","ama":"Scheidemann C, Hemsel T, Sextro W. Characteristic behavior of lead-free and lead-containing piezo ring ceramics in ultrasonic transducers. In: ; 2024.","bibtex":"@inproceedings{Scheidemann_Hemsel_Sextro_2024, title={Characteristic behavior of lead-free and lead-containing piezo ring ceramics in ultrasonic transducers}, author={Scheidemann, Claus and Hemsel, Tobias and Sextro, Walter}, year={2024} }"},"type":"conference","department":[{"_id":"151"}],"oa":"1","file":[{"access_level":"open_access","file_size":1984385,"file_name":"IWPMA_2024_Scheidemann.pdf","date_updated":"2026-03-02T11:00:13Z","relation":"main_file","content_type":"application/pdf","file_id":"63820","creator":"hemsel","date_created":"2026-01-30T14:50:06Z"}],"date_created":"2025-10-08T14:28:33Z","date_updated":"2026-04-15T11:16:18Z","has_accepted_license":"1","status":"public","title":"Characteristic behavior of lead-free and lead-containing piezo ring ceramics in ultrasonic transducers","year":"2024","author":[{"id":"38259","last_name":"Scheidemann","first_name":"Claus","full_name":"Scheidemann, Claus"},{"full_name":"Hemsel, Tobias","first_name":"Tobias","last_name":"Hemsel","id":"210"},{"first_name":"Walter","last_name":"Sextro","full_name":"Sextro, Walter","id":"21220"}],"conference":{"end_date":"2024-07-26","start_date":"2024-07-22","name":"21nd International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA)","location":"Hannover, Germany"},"user_id":"210","ddc":["620"],"_id":"61756","language":[{"iso":"eng"}]},{"title":"Untersuchung piezoelektrischer Materialeigenschaften unter hydrostatischer Last","year":"2024","author":[{"full_name":"Friesen, Olga","first_name":"Olga","last_name":"Friesen","orcid":"0009-0007-5598-9484","id":"44026"},{"full_name":"Pasha, Muhammad Ahsan","last_name":"Pasha","first_name":"Muhammad Ahsan"},{"first_name":"Max","last_name":"Schwengelbeck","full_name":"Schwengelbeck, Max"},{"id":"11829","last_name":"Claes","first_name":"Leander","orcid":"0000-0002-4393-268X","full_name":"Claes, Leander"},{"id":"15164","last_name":"Baumhögger","first_name":"Elmar","full_name":"Baumhögger, Elmar"},{"id":"213","first_name":"Bernd","last_name":"Henning","full_name":"Henning, Bernd"}],"date_updated":"2026-06-18T12:04:01Z","publication_status":"published","language":[{"iso":"ger"}],"publication":"Fortschritte der Akustik - DAGA 2024","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"}],"file":[{"creator":"ofriesen","date_created":"2024-05-02T13:38:37Z","file_name":"daga2024friesen.pdf","access_level":"open_access","file_size":453108,"relation":"main_file","date_updated":"2024-05-02T14:07:24Z","file_id":"53826","content_type":"application/pdf"}],"date_created":"2024-05-02T13:25:29Z","type":"conference","status":"public","conference":{"name":"DAGA 2024 - 50. JAHRESTAGUNG FÜR AKUSTIK","start_date":"2024-03-18","location":"Hannover","end_date":"2024-03-21"},"has_accepted_license":"1","page":"1117–1120","_id":"53822","ddc":["620"],"user_id":"15164","file_date_updated":"2024-05-02T14:07:24Z","citation":{"mla":"Friesen, Olga, et al. “Untersuchung piezoelektrischer Materialeigenschaften unter hydrostatischer Last.” <i>Fortschritte der Akustik - DAGA 2024</i>, 2024, pp. 1117–1120.","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.","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} }","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.","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.","short":"O. Friesen, M.A. Pasha, M. Schwengelbeck, L. Claes, E. Baumhögger, B. Henning, in: Fortschritte der Akustik - DAGA 2024, 2024, pp. 1117–1120."},"project":[{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"oa":"1"},{"ddc":["620"],"user_id":"210","language":[{"iso":"eng"}],"_id":"51117","has_accepted_license":"1","date_updated":"2026-03-02T10:59:13Z","conference":{"end_date":"2023-11-03","location":"Jeju, Korea","name":"7th International Conference on Advanced Electromaterials (ICAE 2023)","start_date":"2023-10-31"},"author":[{"id":"38259","first_name":"Claus","last_name":"Scheidemann","full_name":"Scheidemann, Claus"},{"id":"210","first_name":"Tobias","last_name":"Hemsel","full_name":"Hemsel, Tobias"},{"first_name":"Olga","last_name":"Friesen","full_name":"Friesen, Olga","id":"44026"},{"first_name":"Leander","orcid":"0000-0002-4393-268X","last_name":"Claes","full_name":"Claes, Leander","id":"11829"},{"id":"21220","full_name":"Sextro, Walter","first_name":"Walter","last_name":"Sextro"}],"title":"Influence of Temperature and Pre-Stress on the Piezoelectric Material Behavior of Ring-Shaped Ceramics","status":"public","year":"2023","oa":"1","department":[{"_id":"151"},{"_id":"49"}],"type":"conference","date_created":"2024-02-01T15:55:44Z","file":[{"access_level":"open_access","file_size":608243,"file_name":"Sch23_ICAE_2023.pdf","date_updated":"2026-03-02T10:59:13Z","relation":"main_file","content_type":"application/pdf","file_id":"63815","creator":"hemsel","date_created":"2026-01-30T07:15:31Z"}],"project":[{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"citation":{"mla":"Scheidemann, Claus, et al. <i>Influence of Temperature and Pre-Stress on the Piezoelectric Material Behavior of Ring-Shaped Ceramics</i>. 2023.","bibtex":"@inproceedings{Scheidemann_Hemsel_Friesen_Claes_Sextro_2023, title={Influence of Temperature and Pre-Stress on the Piezoelectric Material Behavior of Ring-Shaped Ceramics}, author={Scheidemann, Claus and Hemsel, Tobias and Friesen, Olga and Claes, Leander and Sextro, Walter}, year={2023} }","ama":"Scheidemann C, Hemsel T, Friesen O, Claes L, Sextro W. Influence of Temperature and Pre-Stress on the Piezoelectric Material Behavior of Ring-Shaped Ceramics. In: ; 2023.","ieee":"C. Scheidemann, T. Hemsel, O. Friesen, L. Claes, and W. Sextro, “Influence of Temperature and Pre-Stress on the Piezoelectric Material Behavior of Ring-Shaped Ceramics,” presented at the 7th International Conference on Advanced Electromaterials (ICAE 2023), Jeju, Korea, 2023.","apa":"Scheidemann, C., Hemsel, T., Friesen, O., Claes, L., &#38; Sextro, W. (2023). <i>Influence of Temperature and Pre-Stress on the Piezoelectric Material Behavior of Ring-Shaped Ceramics</i>. 7th International Conference on Advanced Electromaterials (ICAE 2023), Jeju, Korea.","short":"C. Scheidemann, T. Hemsel, O. Friesen, L. Claes, W. Sextro, in: 2023.","chicago":"Scheidemann, Claus, Tobias Hemsel, Olga Friesen, Leander Claes, and Walter Sextro. “Influence of Temperature and Pre-Stress on the Piezoelectric Material Behavior of Ring-Shaped Ceramics,” 2023."},"file_date_updated":"2026-03-02T10:59:13Z"},{"date_created":"2023-06-01T12:55:43Z","department":[{"_id":"49"}],"type":"journal_article","publication":"Journal of Sensors and Sensor Systems","issue":"1","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://jsss.copernicus.org/articles/12/163/2023/jsss-12-163-2023.pdf","open_access":"1"}],"doi":"10.5194/jsss-12-163-2023","author":[{"id":"11829","first_name":"Leander","orcid":"0000-0002-4393-268X","last_name":"Claes","full_name":"Claes, Leander"},{"full_name":"Feldmann, Nadine","first_name":"Nadine","last_name":"Feldmann","id":"23082"},{"first_name":"Veronika","last_name":"Schulze","full_name":"Schulze, Veronika"},{"id":"24769","first_name":"Lars","last_name":"Meihost","full_name":"Meihost, Lars"},{"full_name":"Kuhlmann, Henrik","last_name":"Kuhlmann","first_name":"Henrik"},{"full_name":"Jurgelucks, Benjamin","first_name":"Benjamin","last_name":"Jurgelucks"},{"full_name":"Walther, Andrea","last_name":"Walther","first_name":"Andrea"},{"id":"213","full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning"}],"title":"Inverse procedure for measuring piezoelectric material parameters using a single multi-electrode sample","year":"2023","intvolume":"        12","date_updated":"2026-01-05T07:57:13Z","publication_status":"published","oa":"1","citation":{"short":"L. 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Claes <i>et al.</i>, “Inverse procedure for measuring piezoelectric material parameters using a single multi-electrode sample,” <i>Journal of Sensors and Sensor Systems</i>, vol. 12, no. 1, pp. 163–173, 2023, doi: <a href=\"https://doi.org/10.5194/jsss-12-163-2023\">10.5194/jsss-12-163-2023</a>.","ama":"Claes L, Feldmann N, Schulze V, et al. Inverse procedure for measuring piezoelectric material parameters using a single multi-electrode sample. <i>Journal of Sensors and Sensor Systems</i>. 2023;12(1):163–173. doi:<a href=\"https://doi.org/10.5194/jsss-12-163-2023\">10.5194/jsss-12-163-2023</a>","bibtex":"@article{Claes_Feldmann_Schulze_Meihost_Kuhlmann_Jurgelucks_Walther_Henning_2023, title={Inverse procedure for measuring piezoelectric material parameters using a single multi-electrode sample}, volume={12}, DOI={<a href=\"https://doi.org/10.5194/jsss-12-163-2023\">10.5194/jsss-12-163-2023</a>}, number={1}, journal={Journal of Sensors and Sensor Systems}, author={Claes, Leander and Feldmann, Nadine and Schulze, Veronika and Meihost, Lars and Kuhlmann, Henrik and Jurgelucks, Benjamin and Walther, Andrea and Henning, Bernd}, year={2023}, pages={163–173} }","mla":"Claes, Leander, et al. “Inverse Procedure for Measuring Piezoelectric Material Parameters Using a Single Multi-Electrode Sample.” <i>Journal of Sensors and Sensor Systems</i>, vol. 12, no. 1, 2023, pp. 163–173, doi:<a href=\"https://doi.org/10.5194/jsss-12-163-2023\">10.5194/jsss-12-163-2023</a>."},"project":[{"name":"ChaMP: Ein modellbasiertes Messverfahren zur Charakterisierung der frequenzabhängigen Materialeigenschaften von Piezokeramiken unter Verwendung eines einzelnen Probekörperindividuums","_id":"90"},{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"_id":"45445","page":"163–173","volume":12,"user_id":"11829","status":"public"},{"place":"GAMM Annual Meeting, Dresden","date_created":"2023-06-05T07:24:38Z","type":"misc","department":[{"_id":"49"}],"citation":{"chicago":"Claes, Leander, Lars Meihost, and Benjamin Jurgelucks. <i>Inverse Procedure for the Identification of Piezoelectric Material Parameters Supported by Dense Neural Networks</i>. GAMM Annual Meeting, Dresden, 2023.","short":"L. Claes, L. Meihost, B. Jurgelucks, Inverse Procedure for the Identification of Piezoelectric Material Parameters Supported by Dense Neural Networks, GAMM Annual Meeting, Dresden, 2023.","ieee":"L. Claes, L. Meihost, and B. Jurgelucks, <i>Inverse procedure for the identification of piezoelectric material parameters supported by dense neural networks</i>. GAMM Annual Meeting, Dresden, 2023.","apa":"Claes, L., Meihost, L., &#38; Jurgelucks, B. 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Jurgelucks, Parameter Identification of Piezoelectrics Improved by Neural Networks, GAMM Annual Meeting, Dresden, 2023.","chicago":"Jurgelucks, Benjamin. <i>Parameter Identification of Piezoelectrics Improved by Neural Networks</i>. GAMM Annual Meeting, Dresden, 2023.","ieee":"B. Jurgelucks, <i>Parameter Identification of Piezoelectrics improved by Neural Networks</i>. GAMM Annual Meeting, Dresden, 2023.","apa":"Jurgelucks, B. (2023). <i>Parameter Identification of Piezoelectrics improved by Neural Networks</i>."},"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"},{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"place":"GAMM Annual Meeting, Dresden","date_created":"2023-06-05T07:27:42Z","type":"misc","title":"Parameter Identification of Piezoelectrics improved by Neural Networks","status":"public","year":"2023","author":[{"first_name":"Benjamin","last_name":"Jurgelucks","full_name":"Jurgelucks, Benjamin"}],"date_updated":"2026-01-05T07:58:17Z","_id":"45456","language":[{"iso":"eng"}],"user_id":"11829"},{"type":"misc","place":"GAMM Annual Meeting, Dresden","date_created":"2023-06-05T07:30:26Z","project":[{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"citation":{"apa":"Kuess, R. (2023). <i>Parameter identification in piezoelectricity based on all-at-once and reduced regularization</i>.","ieee":"R. Kuess, <i>Parameter identification in piezoelectricity based on all-at-once and reduced regularization</i>. GAMM Annual Meeting, Dresden, 2023.","chicago":"Kuess, Raphael. <i>Parameter Identification in Piezoelectricity Based on All-at-Once and Reduced Regularization</i>. GAMM Annual Meeting, Dresden, 2023.","short":"R. Kuess, Parameter Identification in Piezoelectricity Based on All-at-Once and Reduced Regularization, GAMM Annual Meeting, Dresden, 2023.","mla":"Kuess, Raphael. <i>Parameter Identification in Piezoelectricity Based on All-at-Once and Reduced Regularization</i>. 2023.","ama":"Kuess R. <i>Parameter Identification in Piezoelectricity Based on All-at-Once and Reduced Regularization</i>.; 2023.","bibtex":"@book{Kuess_2023, place={GAMM Annual Meeting, Dresden}, title={Parameter identification in piezoelectricity based on all-at-once and reduced regularization}, author={Kuess, Raphael}, year={2023} }"},"user_id":"11829","language":[{"iso":"eng"}],"_id":"45457","date_updated":"2026-01-05T07:58:32Z","author":[{"last_name":"Kuess","first_name":"Raphael","full_name":"Kuess, Raphael"}],"status":"public","title":"Parameter identification in piezoelectricity based on all-at-once and reduced regularization","year":"2023"},{"conference":{"start_date":"2022-03-21","name":"DAGA 2022 - 48. Jahrestagung für Akustik","location":"Stuttgart","end_date":"2022-03-24"},"author":[{"full_name":"Claes, Leander","last_name":"Claes","first_name":"Leander","orcid":"0000-0002-4393-268X","id":"11829"},{"id":"23082","full_name":"Feldmann, Nadine","first_name":"Nadine","last_name":"Feldmann"},{"full_name":"Schulze, Veronika","last_name":"Schulze","first_name":"Veronika"},{"full_name":"Jurgelucks, Benjamin","first_name":"Benjamin","last_name":"Jurgelucks"},{"full_name":"Walther, Andrea","last_name":"Walther","first_name":"Andrea"},{"first_name":"Bernd","last_name":"Henning","full_name":"Henning, Bernd","id":"213"}],"status":"public","year":"2022","title":"Identification of piezoelectric material parameters using optimised multi-electrode specimens","has_accepted_license":"1","date_updated":"2026-01-05T07:52:51Z","language":[{"iso":"eng"}],"_id":"6553","page":"1326-1329","ddc":["620"],"user_id":"11829","citation":{"mla":"Claes, Leander, et al. “Identification of Piezoelectric Material Parameters Using Optimised Multi-Electrode Specimens.” <i>Fortschritte Der Akustik - DAGA 2022</i>, 2022, pp. 1326–29.","bibtex":"@inproceedings{Claes_Feldmann_Schulze_Jurgelucks_Walther_Henning_2022, title={Identification of piezoelectric material parameters using optimised multi-electrode specimens}, booktitle={Fortschritte der Akustik - DAGA 2022}, author={Claes, Leander and Feldmann, Nadine and Schulze, Veronika and Jurgelucks, Benjamin and Walther, Andrea and Henning, Bernd}, year={2022}, pages={1326–1329} }","ama":"Claes L, Feldmann N, Schulze V, Jurgelucks B, Walther A, Henning B. Identification of piezoelectric material parameters using optimised multi-electrode specimens. In: <i>Fortschritte Der Akustik - DAGA 2022</i>. ; 2022:1326-1329.","ieee":"L. Claes, N. Feldmann, V. Schulze, B. Jurgelucks, A. Walther, and B. Henning, “Identification of piezoelectric material parameters using optimised multi-electrode specimens,” in <i>Fortschritte der Akustik - DAGA 2022</i>, Stuttgart, 2022, pp. 1326–1329.","apa":"Claes, L., Feldmann, N., Schulze, V., Jurgelucks, B., Walther, A., &#38; Henning, B. (2022). Identification of piezoelectric material parameters using optimised multi-electrode specimens. <i>Fortschritte Der Akustik - DAGA 2022</i>, 1326–1329.","short":"L. Claes, N. Feldmann, V. Schulze, B. Jurgelucks, A. Walther, B. Henning, in: Fortschritte Der Akustik - DAGA 2022, 2022, pp. 1326–1329.","chicago":"Claes, Leander, Nadine Feldmann, Veronika Schulze, Benjamin Jurgelucks, Andrea Walther, and Bernd Henning. “Identification of Piezoelectric Material Parameters Using Optimised Multi-Electrode Specimens.” In <i>Fortschritte Der Akustik - DAGA 2022</i>, 1326–29, 2022."},"publication":"Fortschritte der Akustik - DAGA 2022","file_date_updated":"2022-03-28T14:21:06Z","project":[{"_id":"90","name":"ChaMP: Ein modellbasiertes Messverfahren zur Charakterisierung der frequenzabhängigen Materialeigenschaften von Piezokeramiken unter Verwendung eines einzelnen Probekörperindividuums"},{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"date_created":"2019-01-09T14:36:59Z","file":[{"file_id":"30666","content_type":"application/pdf","success":1,"file_name":"daga2022 cla.pdf","access_level":"closed","file_size":1143917,"relation":"main_file","date_updated":"2022-03-28T14:21:06Z","date_created":"2022-03-28T14:21:06Z","creator":"leanderc"}],"department":[{"_id":"49"}],"type":"conference"},{"title":"Estimation of piezoelectric material parameters of ring-shaped specimens","year":"2022","status":"public","author":[{"first_name":"Olga","last_name":"Friesen","full_name":"Friesen, Olga","id":"44026"},{"full_name":"Claes, Leander","last_name":"Claes","first_name":"Leander","orcid":"0000-0002-4393-268X","id":"11829"},{"id":"23082","full_name":"Feldmann, Nadine","last_name":"Feldmann","first_name":"Nadine"},{"full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning","id":"213"}],"date_updated":"2026-01-05T08:02:08Z","language":[{"iso":"eng"}],"_id":"6558","user_id":"11829","citation":{"mla":"Friesen, Olga, et al. <i>Estimation of Piezoelectric Material Parameters of Ring-Shaped Specimens</i>. 2022.","ama":"Friesen O, Claes L, Feldmann N, Henning B. <i>Estimation of Piezoelectric Material Parameters of Ring-Shaped Specimens</i>.; 2022.","bibtex":"@book{Friesen_Claes_Feldmann_Henning_2022, place={International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA)}, title={Estimation of piezoelectric material parameters of ring-shaped specimens}, author={Friesen, Olga and Claes, Leander and Feldmann, Nadine and Henning, Bernd}, year={2022} }","apa":"Friesen, O., Claes, L., Feldmann, N., &#38; Henning, B. (2022). <i>Estimation of piezoelectric material parameters of ring-shaped specimens</i>.","ieee":"O. Friesen, L. Claes, N. Feldmann, and B. Henning, <i>Estimation of piezoelectric material parameters of ring-shaped specimens</i>. International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA), 2022.","short":"O. Friesen, L. Claes, N. Feldmann, B. Henning, Estimation of Piezoelectric Material Parameters of Ring-Shaped Specimens, International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA), 2022.","chicago":"Friesen, Olga, Leander Claes, Nadine Feldmann, and Bernd Henning. <i>Estimation of Piezoelectric Material Parameters of Ring-Shaped Specimens</i>. International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA), 2022."},"project":[{"name":"ChaMP: Ein modellbasiertes Messverfahren zur Charakterisierung der frequenzabhängigen Materialeigenschaften von Piezokeramiken unter Verwendung eines einzelnen Probekörperindividuums","_id":"90"},{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"place":"International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA)","date_created":"2019-01-09T14:37:05Z","type":"misc","department":[{"_id":"49"}]},{"user_id":"11829","doi":"10.17619/UNIPB/1-1264","page":"184","main_file_link":[{"url":"https://digital.ub.uni-paderborn.de/urn/urn:nbn:de:hbz:466:2-40232","open_access":"1"}],"_id":"6563","language":[{"iso":"ger"}],"publisher":"Universität Paderborn","date_updated":"2026-01-05T07:55:46Z","title":"\t Ein modellbasiertes Messverfahren zur Charakterisierung von Piezokeramiken unter Verwendung eines einzelnen scheibenförmigen Probekörpers","year":"2021","status":"public","author":[{"first_name":"Nadine","last_name":"Feldmann","full_name":"Feldmann, Nadine","id":"23082"}],"type":"dissertation","department":[{"_id":"49"}],"oa":"1","date_created":"2019-01-09T14:37:11Z","abstract":[{"lang":"ger","text":"Designprozesse von Schallwandlern werden durch zunehmende Rechenkapazitäten immer mehr durch simulative Betrachtungen unterstützt. Dabei ist vor allem die Wahl der Materialparameter der verwendeten Materialien wichtig für ein realitätsnahes Simulationsergebnis. Bei Schallwandlern werden häufig Piezokeramiken als aktive Elemente genutzt, welche sich durch eine Verkopplung mechanischer und elektrischer Eigenschaften auszeichnen. Zur Bestimmung ihrer Materialparameter stellt der IEEE Standard on Piezoelectricity ein standardisiertes Verfahren dar. Dazu sind fünf Impedanzmessungen an vier unterschiedlich gefertigten Probekörpergeometrien notwendig. Da an jedem einzelnen Probekörper nur eine Untermenge aller notwendigen Materialparameter bestimmt werden kann, werden diese dann zu einem kompletten Materialparametersatz zusammengefügt. Aufgrund der unterschiedlichen Prozessbedingungen, bei denen die jeweiligen Probekörper hergestellt werden, ist dieser Materialparametersatz jedoch inkonsistent und kann nie das Verhalten einer einzelnen Probe beschreiben. Daher wird in der vorliegenden Arbeit ein Messverfahren entwickelt, mit dem es möglich ist, alle relevanten Materialparameter unter besonderer Berücksichtigung von Dämpfung an einem einzelnen Probekörper allein durch Impedanzmessungen zu bestimmen. Als Probekörper wird dazu eine in der Anwendung häufig verwendete Scheibengeometrie verwendet. Um eine hinreichend hohe Sensitivität auf alle Materialparameter zu gewährleisten, wird diese mit einer optimierten Elektrodentopologie gefertigt. Da in diesem Fall keine analytische Betrachtung mehr möglich ist, wird das Messverfahren durch einen inversen Ansatz realisiert."},{"lang":"eng","text":"Design processes of ultrasonic transducers become increasingly simulation-driven due to rising computational capabilities. Therewithin, the choice of the material parameters for modelling the materials used is particularly important for a realistic simulation result. Piezoceramics, which couple mechanic and electrical properties, are often used as active elements in ultrasonic transducers.The IEEE Standard on Piezoelectricity is a standardised procedure for determining these parameters that requires five impedance measurements on four piezocermics of different geometry. Since only a subset of all necessary material parameters can be determined for each individual specimen, these are then combined to form a complete set of material parameters. Due to different processing conditions for each specimen, this set of material parameters is inconsistent and cannot describe the behaviour of a single specimen appropriately. Therefore, in the present thesis, a method is developed with enables the determination of all relevant material parameters including damping on a single piezocermic by means of electrical impedance measurements alone. A piezoelectric ceramic with disc-shaped geometry, which is frequently used in applications, is used as a specimen.In order to ensure a sufficiently high sensitivity to all material parameters, it is manufactured with an optimised electrode topology. Because in this case analytical solutions, which relate the measurement quantities to the material parameters, do not exist, the measurement method is implemented using an inverse approach."}],"project":[{"_id":"90","name":"ChaMP: Ein modellbasiertes Messverfahren zur Charakterisierung der frequenzabhängigen Materialeigenschaften von Piezokeramiken unter Verwendung eines einzelnen Probekörperindividuums"},{"name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)","_id":"245"}],"citation":{"mla":"Feldmann, Nadine. <i>  Ein modellbasiertes Messverfahren zur Charakterisierung von Piezokeramiken unter Verwendung eines einzelnen scheibenförmigen Probekörpers</i>. Universität Paderborn, 2021, doi:<a href=\"https://doi.org/10.17619/UNIPB/1-1264\">10.17619/UNIPB/1-1264</a>.","bibtex":"@book{Feldmann_2021, title={  Ein modellbasiertes Messverfahren zur Charakterisierung von Piezokeramiken unter Verwendung eines einzelnen scheibenförmigen Probekörpers}, DOI={<a href=\"https://doi.org/10.17619/UNIPB/1-1264\">10.17619/UNIPB/1-1264</a>}, publisher={Universität Paderborn}, author={Feldmann, Nadine}, year={2021} }","ama":"Feldmann N. <i>  Ein modellbasiertes Messverfahren zur Charakterisierung von Piezokeramiken unter Verwendung eines einzelnen scheibenförmigen Probekörpers</i>. Universität Paderborn; 2021. doi:<a href=\"https://doi.org/10.17619/UNIPB/1-1264\">10.17619/UNIPB/1-1264</a>","ieee":"N. Feldmann, <i>  Ein modellbasiertes Messverfahren zur Charakterisierung von Piezokeramiken unter Verwendung eines einzelnen scheibenförmigen Probekörpers</i>. Universität Paderborn, 2021.","apa":"Feldmann, N. (2021). <i>  Ein modellbasiertes Messverfahren zur Charakterisierung von Piezokeramiken unter Verwendung eines einzelnen scheibenförmigen Probekörpers</i>. Universität Paderborn. <a href=\"https://doi.org/10.17619/UNIPB/1-1264\">https://doi.org/10.17619/UNIPB/1-1264</a>","short":"N. Feldmann,   Ein modellbasiertes Messverfahren zur Charakterisierung von Piezokeramiken unter Verwendung eines einzelnen scheibenförmigen Probekörpers, Universität Paderborn, 2021.","chicago":"Feldmann, Nadine. <i>  Ein modellbasiertes Messverfahren zur Charakterisierung von Piezokeramiken unter Verwendung eines einzelnen scheibenförmigen Probekörpers</i>. Universität Paderborn, 2021. <a href=\"https://doi.org/10.17619/UNIPB/1-1264\">https://doi.org/10.17619/UNIPB/1-1264</a>."},"supervisor":[{"id":"213","last_name":"Henning","first_name":"Bernd","full_name":"Henning, Bernd"},{"first_name":"Andrea","last_name":"Walther","full_name":"Walther, Andrea"}]},{"publication_identifier":{"issn":["2196-7113","0171-8096"]},"author":[{"id":"23082","full_name":"Feldmann, Nadine","last_name":"Feldmann","first_name":"Nadine"},{"last_name":"Schulze","first_name":"Veronika","full_name":"Schulze, Veronika"},{"id":"11829","full_name":"Claes, Leander","last_name":"Claes","first_name":"Leander","orcid":"0000-0002-4393-268X"},{"last_name":"Jurgelucks","first_name":"Benjamin","full_name":"Jurgelucks, Benjamin"},{"full_name":"Meihost, Lars","first_name":"Lars","last_name":"Meihost","id":"24769"},{"first_name":"Andrea","last_name":"Walther","full_name":"Walther, Andrea"},{"id":"213","full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning"}],"year":"2021","title":"Modelling damping in piezoceramics: A comparative study","intvolume":"        88","date_updated":"2026-01-05T07:54:13Z","publication_status":"published","language":[{"iso":"eng"}],"doi":"10.1515/teme-2020-0096","issue":"5","publication":"tm - Technisches Messen","abstract":[{"text":"The progress in numerical methods and simulation tools promotes the use of inverse problems in material characterisation problems. A newly developed procedure can be used to identify the behaviour of piezoceramic discs over a wide frequency range using a single specimen via fitting simulated and measured impedances by optimising the underlying material parameters. Since there is no generally accepted damping model for piezoelectric ceramics, several mechanical damping models are examined for the material identification. Three models have been chosen and their ability to replicate the measured impedances is evaluated. On the one hand, the common Rayleigh model is considered as a reference. On the other hand, a Zener model and a model using complex constants are extended to model the transversely isotropic material. As the Rayleigh model is only valid for a limited frequency range, it fails to model the broadband behaviour of the material. The model using complex constants leads to the best fit over a wide frequency range while at the same time only adding three additional parameters for modelling damping. Thus, damping can be assumed approximately frequency-independent in piezoceramics.","lang":"eng"}],"date_created":"2021-03-01T14:49:51Z","department":[{"_id":"49"}],"type":"journal_article","status":"public","_id":"21341","page":"294 - 302","volume":88,"user_id":"11829","citation":{"short":"N. Feldmann, V. Schulze, L. Claes, B. Jurgelucks, L. Meihost, A. Walther, B. Henning, Tm - Technisches Messen 88 (2021) 294–302.","chicago":"Feldmann, Nadine, Veronika Schulze, Leander Claes, Benjamin Jurgelucks, Lars Meihost, Andrea Walther, and Bernd Henning. “Modelling Damping in Piezoceramics: A Comparative Study.” <i>Tm - Technisches Messen</i> 88, no. 5 (2021): 294–302. <a href=\"https://doi.org/10.1515/teme-2020-0096\">https://doi.org/10.1515/teme-2020-0096</a>.","apa":"Feldmann, N., Schulze, V., Claes, L., Jurgelucks, B., Meihost, L., Walther, A., &#38; Henning, B. (2021). Modelling damping in piezoceramics: A comparative study. <i>Tm - Technisches Messen</i>, <i>88</i>(5), 294–302. <a href=\"https://doi.org/10.1515/teme-2020-0096\">https://doi.org/10.1515/teme-2020-0096</a>","ieee":"N. Feldmann <i>et al.</i>, “Modelling damping in piezoceramics: A comparative study,” <i>tm - Technisches Messen</i>, vol. 88, no. 5, pp. 294–302, 2021, doi: <a href=\"https://doi.org/10.1515/teme-2020-0096\">10.1515/teme-2020-0096</a>.","ama":"Feldmann N, Schulze V, Claes L, et al. Modelling damping in piezoceramics: A comparative study. <i>tm - Technisches Messen</i>. 2021;88(5):294-302. doi:<a href=\"https://doi.org/10.1515/teme-2020-0096\">10.1515/teme-2020-0096</a>","bibtex":"@article{Feldmann_Schulze_Claes_Jurgelucks_Meihost_Walther_Henning_2021, title={Modelling damping in piezoceramics: A comparative study}, volume={88}, DOI={<a href=\"https://doi.org/10.1515/teme-2020-0096\">10.1515/teme-2020-0096</a>}, number={5}, journal={tm - Technisches Messen}, author={Feldmann, Nadine and Schulze, Veronika and Claes, Leander and Jurgelucks, Benjamin and Meihost, Lars and Walther, Andrea and Henning, Bernd}, year={2021}, pages={294–302} }","mla":"Feldmann, Nadine, et al. “Modelling Damping in Piezoceramics: A Comparative Study.” <i>Tm - Technisches Messen</i>, vol. 88, no. 5, 2021, pp. 294–302, doi:<a href=\"https://doi.org/10.1515/teme-2020-0096\">10.1515/teme-2020-0096</a>."},"project":[{"_id":"90","name":"Ein modellbasiertes Messverfahren zur Charakterisierung der frequenzabhängigen Materialeigenschaften von Piezokeramiken unter Verwendung eines einzelnen Probekörperindividuums"},{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"quality_controlled":"1"},{"citation":{"apa":"Claes, L., Feldmann, N., Jurgelucks, B., Schulze, V., Schmidt, S., Walther, A., &#38; Henning, B. (2021). <i>Optimised Multi-Electrode Topology for Piezoelectric Material Characterisation</i>. 237–238. <a href=\"https://doi.org/10.5162/SMSI2021/A10.1\">https://doi.org/10.5162/SMSI2021/A10.1</a>","mla":"Claes, Leander, et al. <i>Optimised Multi-Electrode Topology for Piezoelectric Material Characterisation</i>. 2021, pp. 237–38, doi:<a href=\"https://doi.org/10.5162/SMSI2021/A10.1\">10.5162/SMSI2021/A10.1</a>.","ieee":"L. Claes <i>et al.</i>, “Optimised Multi-Electrode Topology for Piezoelectric Material Characterisation,” Nürnberg, 2021, pp. 237–238, doi: <a href=\"https://doi.org/10.5162/SMSI2021/A10.1\">10.5162/SMSI2021/A10.1</a>.","chicago":"Claes, Leander, Nadine Feldmann, Benjamin Jurgelucks, Veronika Schulze, Stephan Schmidt, Andrea Walther, and Bernd Henning. “Optimised Multi-Electrode Topology for Piezoelectric Material Characterisation,” 237–38, 2021. <a href=\"https://doi.org/10.5162/SMSI2021/A10.1\">https://doi.org/10.5162/SMSI2021/A10.1</a>.","short":"L. Claes, N. Feldmann, B. Jurgelucks, V. Schulze, S. Schmidt, A. Walther, B. Henning, in: 2021, pp. 237–238.","ama":"Claes L, Feldmann N, Jurgelucks B, et al. Optimised Multi-Electrode Topology for Piezoelectric Material Characterisation. In: ; 2021:237-238. doi:<a href=\"https://doi.org/10.5162/SMSI2021/A10.1\">10.5162/SMSI2021/A10.1</a>","bibtex":"@inproceedings{Claes_Feldmann_Jurgelucks_Schulze_Schmidt_Walther_Henning_2021, title={Optimised Multi-Electrode Topology for Piezoelectric Material Characterisation}, DOI={<a href=\"https://doi.org/10.5162/SMSI2021/A10.1\">10.5162/SMSI2021/A10.1</a>}, author={Claes, Leander and Feldmann, Nadine and Jurgelucks, Benjamin and Schulze, Veronika and Schmidt, Stephan and Walther, Andrea and Henning, Bernd}, year={2021}, pages={237–238} }"},"project":[{"name":"Ein modellbasiertes Messverfahren zur Charakterisierung der frequenzabhängigen Materialeigenschaften von Piezokeramiken unter Verwendung eines einzelnen Probekörperindividuums","_id":"90"},{"_id":"245","name":"FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)"}],"date_created":"2021-05-06T16:25:42Z","department":[{"_id":"49"}],"type":"conference","author":[{"first_name":"Leander","orcid":"0000-0002-4393-268X","last_name":"Claes","full_name":"Claes, Leander","id":"11829"},{"id":"23082","first_name":"Nadine","last_name":"Feldmann","full_name":"Feldmann, Nadine"},{"last_name":"Jurgelucks","first_name":"Benjamin","full_name":"Jurgelucks, Benjamin"},{"last_name":"Schulze","first_name":"Veronika","full_name":"Schulze, Veronika"},{"last_name":"Schmidt","first_name":"Stephan","full_name":"Schmidt, Stephan"},{"first_name":"Andrea","last_name":"Walther","full_name":"Walther, Andrea"},{"full_name":"Henning, Bernd","first_name":"Bernd","last_name":"Henning","id":"213"}],"publication_identifier":{"unknown":["978-3-9819376-4-0"]},"conference":{"name":"Sensor and Measurement Science International","location":"Nürnberg"},"status":"public","title":"Optimised Multi-Electrode Topology for Piezoelectric Material Characterisation","year":"2021","date_updated":"2026-01-05T07:54:28Z","_id":"22012","language":[{"iso":"eng"}],"page":"237-238","user_id":"11829","doi":"10.5162/SMSI2021/A10.1"}]