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中文摘要：
通过自行研制的光纤传感器对不同黏度液体中材料靶后的力学作用进行研究,获得了液体黏度变化对等离子体烧蚀力、射流冲击力及空泡生存周期的影响.实验结果表明：液体黏度相同时,靶材所受冲击力幅值随作用激光能量的增加单调上升;液体黏度增加时,靶材所受的冲击力减小,靶材的空化空蚀程度亦减小;受液体黏度增大的影响,空泡膨胀或收缩过程减缓,相应的生存周期也增大.此外,对空泡溃灭周期公式进行修正,结果表明修正后的理论估算值与实验值的一致性较好.
英文摘要：
A novel force sensor based on optical beam deflection was developed to investigate the mechanical effects during the pulsed laser ablation of a metal in liquids with different viscosities.The experimental results show that the targets in viscous liquids are affected by laser-generated ablation force and high-speed liquid-jet impulse induced by bubble collapse.In the same liquid,the amplitudes of the three kinds of forces increase with the increase of laser energy.With the increase in viscosity,the amplitudes of all three forces decrease,and the cavitation erosion is reduced.Larger viscosities make the bubble expand or contract more slowly,and bubble life-time becomes larger.Besides,the Rayleigh equation was revised,and the results are in good agreement with the experimental data.
同期刊论文项目
同项目期刊论文
Experimental investigation of the collapse of laser-generated cavitation bubbles near a solid bounda
Influence of Liquid Viscosity on a Liquid-Jet Produced by the Collapse of a Laser-Induced Bubble nea
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