NEW PROGRESS IN THE INVESTIGATION OF PULSED LASER-INDUCED FAILURE MECHANISM
-
摘要: 当入射激光的波长、辐照时间、平均功率密度保持相同的条件下，改变激光的时。空结构会产生不同的破坏模式，在上述激光基本参数不变时，如何合理选择激光的时。空分布以便达到最佳的破坏效果，这类问题可称之为激光破坏机理研究中的反问题。迄今为止，人们对这一“反问题”的研究甚少。本文利用非高斯空间分布激光辐照黄铜薄片材料，产生了一种特殊的破坏模式──反冲塞效应，并对此进行了较系统的实验与理论分析，激光破坏反问题的提出和初步探索是研究激光破坏机理的一个新概念和新进展。Abstract: This paper reveals a new kind of pulsed laser-induced failure mode,which wasexperimentally observed in thin target plate of brass and was named as reverse plugging effect (RPE)by the authors previously.In the test,a pulsed Nd:Glaiss laser beam is used withduration 0.3ms,total energy 30-40J, spot size 2-5mm and particuldrily with a spdtialshape of non-Gaussian type,Theoretical analyses are presented for this newly-observed phenomenon,The present investigation confirms that the laser-induced failurfe mode c...
-
Key words:
- laser-induced failure /
- reverse plugging /
- non-Gaussian laser /
- inverse ploblem
-
点击查看大图
计量
- 文章访问数: 1907
- HTML全文浏览量: 61
- PDF下载量: 769
- 被引次数: 0
下载:
