激光冲击处理是小孔表面强化处理的一项新技术，其关键是激光冲击处理工艺参数的选择。本文提出了小孔激光冲击强化处理工艺参数的选择方法，在此基础上，利用调Q钕玻璃激光器对小孔试俘进行了激光冲击强化试验。试验结果表明采用该方法可以显著提高小孔的疲劳寿命。小孔激光冲击强化处理后的疲劳寿命是处理前的2.2倍。
Abstract
Laser shock processing is a new technique for surface strengthening of small holes. In this procedure，the choice of laser parameters is the critical factor. The paper investigates a method for optimizing the laser parameters used. Based upon the method，a series of laser shocking experi?ments were performed on a Q-switched neodymium glass laser. Fatigue test results show that the fa?tigue life of small holes has been greatly increased after processing ： the average fatigue life of laser- shocked holes being 2. 2 times that of unprocessed ones.
关键词
激光冲击处理 /
小孔 /
疲劳寿命 /
铝合金
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Key words
laser shock processing /
small hole /
fatigue life /
aluminum alloy
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参考文献
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脚注
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