D4.1 Optical microphone-based acoustic response analysis for non-contact non-destructive testing
- Event
- SMSI 2020
-
(did not take place because of Covid-19 virus pandemic) - Band
- SMSI 2020 - Measurement Science
- Chapter
- D4 Condition Monitoring
- Author(s)
- W. Rohringer, G. Kaniak, F. Lücking, N. Panzer, B. Fischer - XARION Laser Acoustics GmbH, Vienna (Austria)
- Pages
- 283 - 284
- DOI
- 10.5162/SMSI2020/D4.1
- ISBN
- 978-3-9819376-2-6
- Price
- free
Abstract
In this paper, we present a compact, non-contact non-destructive testing setup based on laser excita-tion and air-coupled detection of ultrasound within a 2 MHz acoustic bandwidth. The setup is com-prised of a miniaturized Optical Microphone as air-coupled ultrasound detector, and a compact excita-tion laser head, both of which are fibre-coupled. We show results from applying this setup to differenti-ate between production batches of small ceramic components with varying quality in terms of their acoustic response. We demonstrate that the acoustic data is well suited for AI-based data analysis.