激光诱导空化泡动态特性及强化机制的实验研究
Experimental investigation on dynamic characteristics and strengthening mechanism of laser-induced cavitation bubbles.
作者信息
Ren X D, He H, Tong Y Q, Ren Y P, Yuan S Q, Liu R, Zuo C Y, Wu K, Sui S, Wang D S
机构信息
Department of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
Department of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
出版信息
Ultrason Sonochem. 2016 Sep;32:218-223. doi: 10.1016/j.ultsonch.2016.03.012. Epub 2016 Mar 10.
The dynamic features of nanosecond laser-induced cavitation bubbles near the light alloy boundary were investigated with the high-speed photography. The shock-waves and the dynamic characteristics of the cavitation bubbles generated by the laser were detected using the hydrophone. The dynamic features and strengthening mechanism of cavitation bubbles were studied. The strengthening mechanisms of cavitation bubble were discussed when the relative distance parameter γ was within the range of 0.5-2.5. It showed that the strengthening mechanisms caused by liquid jet or shock-waves depended on γ much. The research results provided a new strengthening method based on laser-induced cavitation shotless peening (CSP).
采用高速摄影技术研究了轻合金边界附近纳秒激光诱导空化泡的动态特性。利用水听器检测激光产生的冲击波和空化泡的动态特性。研究了空化泡的动态特性和强化机制。讨论了相对距离参数γ在0.5 - 2.5范围内时空化泡的强化机制。结果表明，液体射流或冲击波引起的强化机制很大程度上取决于γ。该研究结果提供了一种基于激光诱导无冲击空化喷丸（CSP）的新型强化方法。
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