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16 Publications
2024 | Conference Paper | LibreCat-ID: 54786 |

Claes, Leander, Tim Hetkämper, Henning Zeipert, and Bernd Henning. “Auswertung Der Modalen Dämpfung von Geführten Akustischen Wellen in Faserverstärkten Kunststoffplatten.” In 22. GMA/ITG-Fachtagung – Sensoren Und Messsysteme 2024, 300–305. VDE Verlag GmbH, 2024. https://doi.org/10.5162/sensoren2024/D1.2.
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2024 | Conference Paper | LibreCat-ID: 54788 |

Hetkämper, Tim, Tom Nellius, Leander Claes, and Bernd Henning. “Visualisierung Tomografischer Daten Aus Schlierenabbildungen Mittels 3D Gaussian Splatting.” In 22. GMA/ITG-Fachtagung – Sensoren Und Messsysteme 2024, 362–367. VDE Verlag GmbH, 2024. https://doi.org/10.5162/sensoren2024/D4.2.
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2024 | Journal Article | LibreCat-ID: 54962 |

Hetkämper, Tim, Leander Claes, and Bernd Henning. “Das Unhörbare Sehen - Ultraschall Mittels Schlierentechnik Visualisieren.” Akustik Journal 2 (2024): 18–25.
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2024 | Misc | LibreCat-ID: 55039
Hetkämper, Tim, and Lars Meihost. Bits Und Bytes - Mikrocontroller Verstehen Mit Modularer Hardware. Tag der Lehre, Universität Paderborn, 2024.
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2024 | Conference Paper | LibreCat-ID: 56835 |

Dreiling, Dmitrij, Dominik Itner, Tim Hetkämper, Carolin Birk, Hauke Gravenkamp, and Bernd Henning. “A Pulse-Echo Measurement Setup to Determine Viscoelastic Material Parameters.” In 2023 International Congress on Ultrasonics, Beijing, China, 2822:012169. IOP Publishing, 2024. https://doi.org/10.1088/1742-6596/2822/1/012169.
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2023 | Conference Paper | LibreCat-ID: 47138
Hetkämper, Tim, Kevin Koch, Manuel Webersen, and Leander Claes. “Application-Based Learning of Signal Analysis Methods with the Help of a Graphical Open-Source Software.” In SEFI 51th Annual Conference Proceedings - Engineering Education for Sustainability. SEFI, 2023. https://doi.org/10.21427/159K-G445.
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2023 | Journal Article | LibreCat-ID: 48053
Hetkämper, Tim, Leander Claes, and Bernd Henning. “Vorzeichenrichtige Tomographische Rekonstruktion von Ultraschallfeldern Mit Hilfe Der Schlierentechnik.” Tm - Technisches Messen 90, no. s1 (2023): 49–54. https://doi.org/10.1515/teme-2023-0069.
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2023 | Journal Article | LibreCat-ID: 37543
Hetkämper, Tim, Kevin Koch, Leander Claes, and Bernd Henning. “Phase-Preserving Methods to Visualise Ultrasonic Fields with Schlieren Imaging.” Tm - Technisches Messen 90, no. 2 (2023): 103–12. https://doi.org/10.1515/teme-2022-0112.
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2023 | Conference Paper | LibreCat-ID: 45205 |

Dreiling, Dmitrij, Dominik Itner, Tim Hetkämper, Carolin Birk, Hauke Gravenkamp, and Bernd Henning. “Improved Determination of Viscoelastic Material Parameters Using a Pulse-Echo Measurement Setup.” In SMSI 2023 Conference, 394–95. SMSI - Sensor and Measurement Science International. Nürnberg: AMA Association For Sensors And Measurement, 2023. https://doi.org/10.5162/SMSI2023/P59.
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2022 | Misc | LibreCat-ID: 6561
Hetkämper, Tim. Visualisierung von Ultraschallfeldern Mittels Schlierentechnik Und Fraktionaler Fouriertransformation. Workshop “Messtechnische Anwendungen von Ultraschall”, Drübeck, 2022.
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2022 | Conference Paper | LibreCat-ID: 31331
Hetkämper, Tim, Leander Claes, and Bernd Henning. “Schlieren Imaging with Fractional Fourier Transform to Visualise Ultrasonic Fields.” In Sensoren Und Messsysteme - Beiträge Der 21. ITG/GMA-Fachtagung. Berlin, Offenbach: VDE Verlag GmbH, 2022.
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2021 | Journal Article | LibreCat-ID: 22925
Claes, Leander, René Spencer Chatwell, Elmar Baumhögger, Tim Hetkämper, Henning Zeipert, Jadran Vrabec, and Bernd Henning. “Measurement Procedure for Acoustic Absorption and Bulk Viscosity of Liquids.” Measurement, 2021. https://doi.org/10.1016/j.measurement.2021.109919.
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2021 | Conference Paper | LibreCat-ID: 25880 |

Hetkämper, Tim, Dmitrij Dreiling, Leander Claes, and Bernd Henning. “Tomographie des Schallfelds von Ultraschallwandlern mittels Schlierentechnik.” In Fortschritte der Akustik - DAGA 2021, 2021.
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2020 | Conference Paper | LibreCat-ID: 19502 |

Hetkämper, Tim, Matthias Krumme, Dmitrij Dreiling, and Leander Claes. “A Modular, Scalable Open-Hardware Platform for Project-Based Laboratory Courses in Electrical Engineering Studies.” In SEFI 48th Annual Conference Proceedings - Engaging Engineering Education, 1309–13. SEFI, 2020.
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2020 | Misc | LibreCat-ID: 15489 |

Claes, Leander, Carolin Steidl, Tim Hetkämper, and Bernd Henning. Estimation of Acoustic Wave Non-Linearity in Ultrasonic Measurement Systems. Cornell University, 2020. https://doi.org/10.48550/arXiv.2001.05708.
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2019 | Conference Paper | LibreCat-ID: 16076
Hetkämper, Tim, Leander Claes, and Bernd Henning. “Evolutionary Algorithm for the Design of Passive Electric Matching Networks for Ultrasonic Transducers.” In 2019 International Congress on Ultrasonics, 2019. https://doi.org/10.1121/2.0001110.
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