@inproceedings{60504,
  author       = {{Nellius, Tom and Henne, Kevin and Hartinger, Maximilian and Meihost, Lars and Hetkämper, Tim and Zeipert, Henning and Claes, Leander and Henning, Bernd}},
  location     = {{Nürnberg}},
  title        = {{{Ultrasonic phased array interface using programmable I/O and microprocessor clock synchronisation}}},
  doi          = {{ 10.5162/SMSI2025/A5.4}},
  year         = {{2025}},
}

@inproceedings{54786,
  author       = {{Claes, Leander and Hetkämper, Tim and Zeipert, Henning and Henning, Bernd}},
  booktitle    = {{22. GMA/ITG-Fachtagung – Sensoren und Messsysteme 2024}},
  isbn         = {{978-3-910600-01-0}},
  pages        = {{300–305}},
  publisher    = {{VDE Verlag GmbH}},
  title        = {{{Auswertung der modalen Dämpfung von geführten akustischen Wellen in faserverstärkten Kunststoffplatten}}},
  doi          = {{10.5162/sensoren2024/D1.2}},
  year         = {{2024}},
}

@inproceedings{54788,
  author       = {{Hetkämper, Tim and Nellius, Tom and Claes, Leander and Henning, Bernd}},
  booktitle    = {{22. GMA/ITG-Fachtagung – Sensoren und Messsysteme 2024}},
  isbn         = {{978-3-910600-01-0}},
  pages        = {{362–367}},
  publisher    = {{VDE Verlag GmbH}},
  title        = {{{Visualisierung tomografischer Daten aus Schlierenabbildungen mittels 3D Gaussian Splatting}}},
  doi          = {{10.5162/sensoren2024/D4.2}},
  year         = {{2024}},
}

@article{54962,
  author       = {{Hetkämper, Tim and Claes, Leander and Henning, Bernd}},
  issn         = {{2569–1600}},
  journal      = {{Akustik Journal}},
  pages        = {{18 -- 25}},
  publisher    = {{Deutsche Gesellschaft für Akustik e.V. (DEGA)}},
  title        = {{{Das Unhörbare sehen - Ultraschall mittels Schlierentechnik visualisieren}}},
  volume       = {{2}},
  year         = {{2024}},
}

@misc{55039,
  author       = {{Hetkämper, Tim and Meihost, Lars}},
  title        = {{{Bits und Bytes - Mikrocontroller verstehen mit modularer Hardware}}},
  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}},
}

@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}},
}

@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}},
}

@misc{6561,
  author       = {{Hetkämper, Tim}},
  title        = {{{Visualisierung von Ultraschallfeldern mittels Schlierentechnik und fraktionaler Fouriertransformation}}},
  year         = {{2022}},
}

@inproceedings{31331,
  author       = {{Hetkämper, Tim and Claes, Leander and Henning, Bernd}},
  booktitle    = {{Sensoren und Messsysteme - Beiträge der 21. ITG/GMA-Fachtagung}},
  isbn         = {{978-3-8007-5835-7}},
  location     = {{Nürnberg}},
  publisher    = {{VDE Verlag GmbH}},
  title        = {{{Schlieren imaging with fractional Fourier transform to visualise ultrasonic fields}}},
  year         = {{2022}},
}

@article{22925,
  author       = {{Claes, Leander and Chatwell, René Spencer and Baumhögger, Elmar and Hetkämper, Tim and Zeipert, Henning and Vrabec, Jadran and Henning, Bernd}},
  issn         = {{0263-2241}},
  journal      = {{Measurement}},
  title        = {{{Measurement procedure for acoustic absorption and bulk viscosity of liquids}}},
  doi          = {{10.1016/j.measurement.2021.109919}},
  year         = {{2021}},
}

@inproceedings{25880,
  author       = {{Hetkämper, Tim and Dreiling, Dmitrij and Claes, Leander and Henning, Bernd}},
  booktitle    = {{Fortschritte der Akustik - DAGA 2021}},
  title        = {{{Tomographie des Schallfelds von Ultraschallwandlern mittels Schlierentechnik}}},
  year         = {{2021}},
}

@inproceedings{19502,
  author       = {{Hetkämper, Tim and Krumme, Matthias and Dreiling, Dmitrij and Claes, Leander}},
  booktitle    = {{SEFI 48th Annual Conference Proceedings - Engaging Engineering Education}},
  location     = {{Enschede}},
  pages        = {{1309--1313}},
  publisher    = {{SEFI}},
  title        = {{{A modular, scalable open-hardware platform for project-based laboratory courses in electrical engineering studies}}},
  year         = {{2020}},
}

@misc{15489,
  author       = {{Claes, Leander and Steidl, Carolin and Hetkämper, Tim and Henning, Bernd}},
  publisher    = {{Cornell University}},
  title        = {{{Estimation of acoustic wave non-linearity in ultrasonic measurement systems}}},
  doi          = {{10.48550/arXiv.2001.05708}},
  year         = {{2020}},
}

@inproceedings{16076,
  author       = {{Hetkämper, Tim and Claes, Leander and Henning, Bernd}},
  booktitle    = {{2019 International Congress on Ultrasonics}},
  location     = {{Bruges}},
  title        = {{{Evolutionary algorithm for the design of passive electric matching networks for ultrasonic transducers}}},
  doi          = {{10.1121/2.0001110}},
  year         = {{2019}},
}