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4 May 2015 Characteristics and detecting of laser-induced single bubble collapse noise
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Proceedings Volume 9543, Third International Symposium on Laser Interaction with Matter; 95430L (2015) https://doi.org/10.1117/12.2181398
Event: Third International Symposium on Laser Interaction with Matter, 2014, Jiangsu, China
Abstract
Shock waves emission after collapse of a laser-induced bubble in the liquid was studied experimentally by using a PTZ hydrophone. An experimental method and a Cavitation detection system was designed to investigate bubble collapse noise in this article. When a focused short laser pulse was focused in a liquid near a solid wall, it induced optical breakdown, the emission of shock waves and the generation of cavitation bubbles. A PZT hydrophone was used to detect the shock wave emitted during bubble oscillations. In addition, a software based on MATLAB was designed for analyzing cavitation noise. The software system had multiple functionalities, namely signal reading, noise reduction, signal analysis in frequency domain, and display. The results showed that the software can not only reflect the spectral characteristics of the noise quickly but also can interpret the current cavitation station according to the changing rules of different cavitation station. The results of the research have strong implications for cavitation phenomena analysis and cavitation warning systems in turbines, propellers, and other irrigation machinery.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Xiumei Liu, Jie He, Wenhua Li, Mingli Jiao, Xiaochen Liu, Haibing Wang, Bingyang Wang, and Beibei Li "Characteristics and detecting of laser-induced single bubble collapse noise", Proc. SPIE 9543, Third International Symposium on Laser Interaction with Matter, 95430L (4 May 2015); https://doi.org/10.1117/12.2181398
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