| Issue |
EPJ Web Conf.
Volume 335, 2025
EOS Annual Meeting (EOSAM 2025)
|
|
|---|---|---|
| Article Number | 03018 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting - Applications of Optics and Photonics | |
| DOI | https://doi.org/10.1051/epjconf/202533503018 | |
| Published online | 22 September 2025 | |
https://doi.org/10.1051/epjconf/202533503018
Full field measurement of guided ultrasonic waves using lensless digital holography and structure function analysis
1 BIAS - Bremer Institut für Angewandte Strahltechnik, Klagenfurter Str. 5, 28359 Bremen, Germany
2 FIBRE - Faserinstitut Bremen e.V., Am Biologischen Garten 2, 28359 Bremen, Germany
3 Universität Bremen, Fachbereich 01: Physik/Elektrotechnik and MAPEX Center for Materials and Processes, 28359 Bremen, Germany
4 Universität Bremen, Fachbereich 04: Produktionstechnik and MAPEX Center for Materials and Processes, 28359 Bremen, Germany
* e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 22 September 2025
Abstract
This work discusses the full-field measurement and characterization of guided ultrasonic waves (GUWs) on technical surfaces. The measurement is realized by a lensless digital holography approach with stroboscopic coherent illumination. This approach ultimately yields the height distribution featuring the deformation caused by the GUWs, which is then statistically evaluated using the structure function. As a result, GUWs are captured single-shot and characterized regarding wavelength and amplitude.
© The Authors, published by EDP Sciences, 2025
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