Title :
Spectrum Analysis for the Detection of Multiple Cracks Using a Laser Ultrasonic Surface Wave
Author :
Park, Seung-Kyu ; Kim, Woon-Ill ; Baik, Sung-Hoon ; Jung, Hyun-Kyu ; Cha, Hyung-Ki ; Cheong, Yong-Moo
Author_Institution :
Korea Atomic Energy Res. Inst., Daejeon
Abstract :
Detailed information on micro surface cracks in a component is very important to prevent a severe system failure. In this paper, we have investigated the effects of laser surface waves according to the number and the depth of multiple surface cracks. Here, we describe the experimental results to detect multiple surface cracks by using a laser ultrasound.
Keywords :
crack detection; measurement by laser beam; microcracks; photoacoustic effect; spectral analysis; surface acoustic waves; surface cracks; ultrasonic materials testing; laser ultrasonic surface wave; microsurface crack detection; multiple crack detection; spectrum analysis; Frequency; Inspection; Optical pulse generation; Optical surface waves; Pulse measurements; Surface cracks; Surface emitting lasers; Surface waves; Ultrasonic imaging; Ultrasonic variables measurement;
Conference_Titel :
Lasers and Electro-Optics - Pacific Rim, 2007. CLEO/Pacific Rim 2007. Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-1173-3
Electronic_ISBN :
978-1-4244-1174-0
DOI :
10.1109/CLEOPR.2007.4391798
