@misc{55302,
  author       = {{Claes, Leander and Wippermann, Mareen}},
  title        = {{{Analysis of guided acoustic waves in periodically structured plates}}},
  year         = {{2024}},
}

@article{55519,
  abstract     = {{Im Folgenden wird ein wellenleiterbasierter Ansatz zur Bestimmung von viskoelastischen Materialparametern für eine numerische Simulation der Schallausbreitung in transversal isotropen Polymeren vorgestellt. Ein hierfür entwickeltes Puls-Echo-Messverfahren liefert Messsignale, welche anschließend zur Schätzung der Materialparameter von absorbierenden, zylindrischen Polymerproben genutzt werden. Darüber hinaus kommen in dem Messaufbau Schallwandler zum Einsatz, die eine segmentierte ringförmige Anregung der Probe verursachen und die Sensitivität gegenüber Scherbewegungen erhöhen. Mithilfe einer ersten strahlentheoretischen Startwertschätzung werden eine multimodale, semianalytische Simulation der Schallausbreitung im Wellenleiter realisiert und schließlich die Materialparameter im inversen Ansatz geschätzt.}},
  author       = {{Dreiling, Dmitrij and Itner, Dominik and Gravenkamp, Hauke and Birk, Carolin and Henning, Bernd}},
  isbn         = {{2196-7113}},
  journal      = {{tm - Technisches Messen}},
  keywords     = {{Materialcharakterisierung, Puls-Echo Methode, inverse Verfahren}},
  number       = {{s1}},
  pages        = {{26--31}},
  publisher    = {{De Gruyter}},
  title        = {{{Die Bestimmung viskoelastischer Materialparameter von Polymeren mittels eines Puls-Echo-Messverfahrens}}},
  doi          = {{10.1515/teme-2024-0045}},
  volume       = {{91}},
  year         = {{2024}},
}

@inproceedings{56836,
  author       = {{Claes, Leander and Johannesmann, Sarah and Zeipert, Henning and Henning, Bernd}},
  booktitle    = {{2023 International Congress on Ultrasonics, Beijing, China}},
  issn         = {{1742-6596}},
  pages        = {{012171}},
  publisher    = {{IOP Publishing}},
  title        = {{{Broadband acoustic waves in plate-like structures for acoustic material characterisation}}},
  doi          = {{10.1088/1742-6596/2822/1/012171}},
  volume       = {{2822}},
  year         = {{2024}},
}

@inproceedings{56835,
  author       = {{Dreiling, Dmitrij and Itner, Dominik and Hetkämper, Tim and Birk, Carolin and Gravenkamp, Hauke and Henning, Bernd}},
  booktitle    = {{2023 International Congress on Ultrasonics, Beijing, China}},
  issn         = {{1742-6596}},
  pages        = {{012169}},
  publisher    = {{IOP Publishing}},
  title        = {{{A pulse-echo measurement setup to determine viscoelastic material parameters}}},
  doi          = {{10.1088/1742-6596/2822/1/012169}},
  volume       = {{2822}},
  year         = {{2024}},
}

@misc{12950,
  author       = {{Claes, Leander and Webersen, Manuel}},
  publisher    = {{GitHub, Inc.}},
  title        = {{{pyfds 0.3.1 - modular field simulation tool}}},
  doi          = {{10.5281/ZENODO.2649826}},
  year         = {{2024}},
}

@inproceedings{53828,
  author       = {{Zeipert, Henning and Hölscher, Jonas and Claes, Leander and Henning, Bernd}},
  booktitle    = {{Fortschritte der Akustik - DAGA 2024}},
  editor       = {{Gesellschaft für Akustik e.V., Deutsche}},
  pages        = {{640–643}},
  title        = {{{Beschreibung des akustischen Verhaltens verklebter plattenförmiger Strukturen mittels Kopplungsmodellen}}},
  year         = {{2024}},
}

@inproceedings{53824,
  author       = {{Koch, Kevin and Claes, Leander and Jurgelucks, Benjamin and Meihost, Lars and Henning, Bernd}},
  booktitle    = {{Fortschritte der Akustik - DAGA 2024}},
  editor       = {{Gesellschaft für Akustik e.V., Deutsche }},
  pages        = {{1113–1116}},
  title        = {{{Inverses Verfahren zur Identifikation piezoelektrischer Materialparameter unterstützt durch neuronale Netze}}},
  year         = {{2024}},
}

@inproceedings{56834,
  author       = {{Friesen, Olga and Claes, Leander and Scheidemann, Claus and Feldmann, Nadine and Hemsel, Tobias and Henning, Bernd}},
  booktitle    = {{2023 International Congress on Ultrasonics, Beijing, China}},
  issn         = {{1742-6596}},
  pages        = {{012125}},
  publisher    = {{IOP Publishing}},
  title        = {{{Estimation of temperature-dependent piezoelectric material parameters using ring-shaped specimens}}},
  doi          = {{10.1088/1742-6596/2822/1/012125}},
  volume       = {{2822}},
  year         = {{2024}},
}

@misc{55470,
  author       = {{Koch, Kevin and Friesen, Olga and Claes, Leander}},
  publisher    = {{Zenodo}},
  title        = {{{Randomised material parameter impedance dataset of piezoelectric rings}}},
  doi          = {{10.5281/zenodo.13143680}},
  year         = {{2024}},
}

@misc{53662,
  author       = {{Koch, Kevin and Claes, Leander}},
  publisher    = {{zenodo}},
  title        = {{{Randomised material parameter piezoelectric impedance dataset with structured electrodes}}},
  doi          = {{10.5281/ZENODO.11064206}},
  year         = {{2024}},
}

@misc{55416,
  author       = {{Claes, Leander and Koch, Kevin and Friesen, Olga and Meihost, Lars}},
  title        = {{{Machine learning in inverse measurement problems: An application to piezoelectric material characterisation}}},
  year         = {{2024}},
}

@article{56777,
  abstract     = {{The estimation of accurate piezoelectric material parameters is a fundamental prerequisite for simulation-driven design of piezoelectric actuators and sensors. Previous studies show that a full set of material parameters can be determined in an inverse procedure using a single disc-shaped specimen with an electrode structured for increased sensitivity with respect to all material parameters. However, in the case of high-power actuator applications, ring-shaped piezoelectric components are often employed, necessitating an adaptation of the previously developed method. The alteration in geometry introduces some advantages. Accordingly, there is no longer any requirement to modify the electrode structure in order to enhance sensitivity. The method to estimate the material parameters presented here consists of a total of three stages. An initial, approximate estimation of the material parameters is determined using analytical approximations for the resonance frequencies from the IEEE standard. These values are optimised in an inverse procedure that employs analytic expressions for the electrical impedance of piezoelectric rings as the forward model. Further refinement is achieved by using Finite Element (FE) simulations as the forward model again in an inverse procedure. The method is applied to electrical impedance measurement data, yielding material parameters for hard piezoelectric rings. The result shows a good agreement between the simulation and measurement results, indicating realistic material parameter values.}},
  author       = {{Friesen, Olga and Claes, Leander and Feldmann, Nadine and Henning, Bernd}},
  issn         = {{2196-7113}},
  journal      = {{tm - Technisches Messen}},
  publisher    = {{De Gruyter}},
  title        = {{{Estimation of piezoelectric material parameters of ring-shaped specimens}}},
  doi          = {{https://doi.org/10.1515/teme-2024-0107}},
  year         = {{2024}},
}

@article{54314,
  author       = {{Koch, Kevin and Claes, Leander and Jurgelucks, Benjamin and Meihost, Lars}},
  journal      = {{tm - Technisches Messen}},
  publisher    = {{Walter de Gruyter GmbH}},
  title        = {{{Neuronale Netze zur Startwertschätzung bei der Identifikation piezoelektrischer Materialparameter}}},
  doi          = {{10.1515/teme-2024-0099}},
  year         = {{2024}},
}

@inproceedings{47138,
  author       = {{Hetkämper, Tim and Koch, Kevin and Webersen, Manuel and Claes, Leander}},
  booktitle    = {{SEFI 51th Annual Conference Proceedings - Engineering Education for Sustainability}},
  publisher    = {{SEFI}},
  title        = {{{Application-based learning of signal analysis methods with the help of a graphical open-source software}}},
  doi          = {{10.21427/159K-G445}},
  year         = {{2023}},
}

@article{48053,
  author       = {{Hetkämper, Tim and Claes, Leander and Henning, Bernd}},
  issn         = {{2196-7113}},
  journal      = {{tm - Technisches Messen}},
  keywords     = {{Electrical and Electronic Engineering, Instrumentation}},
  number       = {{s1}},
  pages        = {{49--54}},
  publisher    = {{Walter de Gruyter GmbH}},
  title        = {{{Vorzeichenrichtige tomographische Rekonstruktion von Ultraschallfeldern mit Hilfe der Schlierentechnik}}},
  doi          = {{10.1515/teme-2023-0069}},
  volume       = {{90}},
  year         = {{2023}},
}

@inproceedings{43233,
  author       = {{Zeipert, Henning and von Germeten, Christian and Friesen, Olga and Claes, Leander and Johannesmann, Sarah and Henning, Bernd}},
  booktitle    = {{Fortschritte der Akustik - DAGA 2023}},
  location     = {{Hamburg}},
  pages        = {{819--822}},
  title        = {{{Investigation of change in dispersive behaviour during adhesive curing in multi-layered structures}}},
  year         = {{2023}},
}

@inproceedings{43229,
  author       = {{Claes, Leander}},
  booktitle    = {{Fortschritte der Akustik - DAGA 2023}},
  location     = {{Hamburg}},
  pages        = {{7--14}},
  title        = {{{Bestimmung der Volumenviskosität mittels akustischer Absorptionsmessung}}},
  year         = {{2023}},
}

@inproceedings{43234,
  author       = {{Nicolai, Marcel and Zeipert, Henning and Lugovtsova, Yevgeniya and Bulling, Jannis and Johannesmann, Sarah and Prager, Jens and Henning, Bernd}},
  booktitle    = {{Fortschritte der Akustik - DAGA 2023}},
  location     = {{Hamburg}},
  pages        = {{823--826}},
  title        = {{{Characterization of adhesion strength using guided ultrasonic waves}}},
  year         = {{2023}},
}

@article{37543,
  author       = {{Hetkämper, Tim and Koch, Kevin and Claes, Leander and Henning, Bernd}},
  journal      = {{tm - Technisches Messen}},
  keywords     = {{Schlierentechnik}},
  number       = {{2}},
  pages        = {{103--112}},
  publisher    = {{Walter de Gruyter GmbH}},
  title        = {{{Phase-preserving methods to visualise ultrasonic fields with schlieren imaging}}},
  doi          = {{10.1515/teme-2022-0112}},
  volume       = {{90}},
  year         = {{2023}},
}

@inproceedings{45205,
  author       = {{Dreiling, Dmitrij and Itner, Dominik and Hetkämper, Tim and Birk, Carolin and Gravenkamp, Hauke and Henning, Bernd}},
  booktitle    = {{SMSI 2023 Conference}},
  isbn         = {{978-3-9819376-8-8}},
  location     = {{Nürnberg}},
  pages        = {{394 -- 395}},
  publisher    = {{AMA Association For Sensors And Measurement}},
  title        = {{{Improved determination of viscoelastic material parameters using a pulse-echo measurement setup}}},
  doi          = {{10.5162/SMSI2023/P59}},
  year         = {{2023}},
}