Work

Full field measurement of guided ultrasonic waves using lensless digital holography and structure function analysis

Year: 2025

Type: conference-paper

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.

Source: EPJ Web of Conferences

DOI: 10.1051/epjconf/202533503018

Authors: Beñat Gutiérrez-Cañas Pazos, Claas Falldorf, Michael Koerdt, David May, Ralf B. Bergmann

Institutions: Bremen Institute for Applied Beam Technology, Faserinstitut Bremen, University of Bremen

Language: English

Topic: Digital Holography and Microscopy

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funder: Deutsche Forschungsgemeinschaft

Award: Untersuchung der Strukturfunktion zur Analyse optisch gemessener Oberflächendaten (Strukturfunktion II)