6 March 2015 Study on the detection of a cylindrical surface-breaking bore-hole reflector based on laser ultrasonic technology
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Proceedings Volume 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation; 94460P (2015) https://doi.org/10.1117/12.2180596
Event: International Symposium on Precision Engineering Measurement and Instrumentation, 2014, Changsha/Zhangjiajie, China
Abstract
In this paper, a visualization system was proposed based on ultrasound excitation from a Q-switched pulsed YAG laser. The ultrasonic wave was received by a piezoelectric transducer. The electrical time-domain signal was analyzed in the Fourier-domain in order to detect a hole-like reflector in an austenitic stainless steel specimen. At a given receiver position, a piezoelectric transducer received the ultrasonic wave signal. The electrical time-domain signal was analyzed in the Fourier-domain. The experimental research on the influence of the relative position distance between the laser excitation spot and the defect of the test specimen was conducted. The experimental results showed a significant geometrical imaging of the reflector shape with the scanned data. Therefore, a quantitative laser ultrasound visualization system was realized along with the spectral analysis. It will provide a new method of defects detection and sizing.
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Haitao Wang, Haitao Wang, Wei Zeng, Wei Zeng, Xianming Yang, Xianming Yang, GuiYun Tian, GuiYun Tian, Ruipeng Guo, Ruipeng Guo, Guoxing Hu, Guoxing Hu, Min Wan, Min Wan, } "Study on the detection of a cylindrical surface-breaking bore-hole reflector based on laser ultrasonic technology", Proc. SPIE 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation, 94460P (6 March 2015); doi: 10.1117/12.2180596; https://doi.org/10.1117/12.2180596
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