Development and application of LSP micro shock driver

LSP微震驱动器的研制与应用

基本信息

批准号：
18560153
负责人：
HIRAHARA Hiroyuki
金额：
$ 2.49万
依托单位：
Saitama University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18560153/
关键词：
Micro shock wave Laser irradiation Optical measurement Metal ablation plasma Self similar Energy conversion coe3fficient Laser shock peening 圧縮・非圧縮流衝撃波マイクロ流れピーニングマイクロデバイス

项目摘要

When we irradiated a laser on the solid surface (a surface of metal), a solid is excited by light energy of a laser and plasma will be induced at the surface, so as a result, a shock wave is formed in an ambient gas by plasma. The present study performed a study to utilize this shock wave effectively. We performed an experiment measurement of a shock wave to occur by collection of light of a laser. The shock wave generated it by irradiating a laser to various kinds of metal plates. I used aluminum, stainless steel, brass, titanium for a metal plate. We performed an experiment the limit around that shock wave outbreak was confirmed for 2006 having enforced the irradiation strength with comparatively big energy strength in 2007 laser. With this strength, I observed a shock wave or a state to occur by shadow graphology and BOS method optically in an observation domain of 1mm around * 1mm and demanded a time change of a Mach number of a shock wave. The measurement of a shock wave demanded a position of a shock wave every 20 ns. Measurement range several of this case were full of the measurement neighbor by a unit of ten μm, difficulty, but reliable data were acquired by many experiment accomplishment. I was located between spread characteristics of a spherical surface wave and plane wave when it pursued the degree for a function of time by position data of a provided shock wave, and it became clear to be considerably near in a spread characteristic of a spherical surface wave. A Mach number just after shock wave outbreak was considerable high speed, and it was shown that a thing of around 15 was provided in a Mach number. A Mach number of a shock wave did not show dependence for metal properties of matter, and the result that was against an original prediction was provided.

当我们用激光照射固体表面（金属表面）时，固体被激光的光能激发，并在表面感应出等离子体，从而在周围气体中形成冲击波本研究对通过激光照射各种金属板而产生的冲击波进行了有效利用的研究。我用过铝、不锈钢、黄铜、我们在2006年进行了实验，在2006年确认了冲击波爆发的极限，并在2007年加强了具有较大能量强度的照射强度，以该强度观察了冲击波或发生的状态。阴影笔迹学和BOS方法以光学方式在1mm×1mm周围的观察范围内要求冲击波的马赫数的时间变化冲击波的测量要求每20个冲击波的位置。本例中的几个测量范围都充满了以十μm为单位的测量邻居，但通过多次实验的成果，我在追求时位于球面波和平面波的传播特性之间，获得了可靠的数据。根据所提供的冲击波的位置数据来求出时间函数的程度，可知冲击波爆发后的马赫数相当高，与球面波的传播特性相当接近。显示提供了大约 15 个东西在马赫数中，冲击波的马赫数没有表现出对物质金属性质的依赖性，并且提供了与原始预测相反的结果。