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长短脉冲复合激光对铝材的损伤机制

Damage Mechanism of Aluminum by Long-Short Composite Pulsed Laser

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摘要

探索了长短脉冲复合激光在铝材损伤方面的应用。基于激光与材料相互作用的热效应原理, 讨论了材料表面反射率、激光与材料耦合系数等对损伤机制的影响, 数值计算了长脉冲激光辐照对2A12铝材的热效应、短脉冲激光对铝材的冲击压强及损伤时间。设计了长短脉冲复合激光辐照实验系统。结果表明, 设计的长短脉冲复合激光器能够实现对2A12铝材的有效快速损伤, 损伤效果好于单独的长脉冲或短脉冲作用, 有效降低了损伤时间。

Abstract

The application of a long-short composite pulsed laser in aluminum damage is explored. The influences of the reflectivity of material surface and the laser-material-coupling coefficient on damage mechanism are also discussed based on the thermal effect in laser-material interaction. The impact pressure and damage time of a short pulsed laser on aluminum and the thermal effect of a long pulsed laser irradiation on 2A12 aluminum are numerically calculated. A long-short composite pulsed laser irradiation experimental system is designed. The results show that the designed long-short composite pulsed laser can be used to damage 2A12 aluminum effectively and rapidly. Moreover, the damage effect is superior to that by the single long or short pulsed laser, and the damage time is effectively reduced.

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中图分类号:TN248.1;TN249;O432.1

DOI:10.3788/lop55.101404

所属栏目:激光器与激光光学

基金项目:航空科学基金(2016ZC25002)、陆航装备预研基金(30104031004)

收稿日期:2018-03-30

修改稿日期:2018-05-03

网络出版日期:2018-05-09

作者单位    点击查看

王秋实:中国航空制造技术研究院光电技术研究室, 北京 100024
庞博:中国航空制造技术研究院光电技术研究室, 北京 100024
张亦卓:中国航空制造技术研究院光电技术研究室, 北京 100024
胡文华:中国航空制造技术研究院光电技术研究室, 北京 100024
李忠建:中国航空制造技术研究院光电技术研究室, 北京 100024

联系人作者:李忠建(mylame@163.com); 王秋实(wangqiushi210@mails.ucas.ac.cn);

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引用该论文

Wang Qiushi,Pang Bo,Zhang Yizhuo,Hu Wenhua,Li Zhongjian. Damage Mechanism of Aluminum by Long-Short Composite Pulsed Laser[J]. Laser & Optoelectronics Progress, 2018, 55(10): 101404

王秋实,庞博,张亦卓,胡文华,李忠建. 长短脉冲复合激光对铝材的损伤机制[J]. 激光与光电子学进展, 2018, 55(10): 101404

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