多脉冲激光支持爆轰波的机理与实验研究
[Abstract]:Laser supported detonation wave is one of the phenomena of interaction between laser and matter. It can be applied to the fabrication of silicon based microstructures. The solidification of space fasteners has a wide application prospect in the fields of space propulsion and laser micromachining. Therefore, it is of great significance to study the correlation of laser support detonation wave. The related theory of interaction between light and metal target is studied. The mechanism of the generation of detonation wave by laser, the physical change process of laser bombardment and the behavior of plasma are analyzed. Based on this, the theory model of the multi pulse laser to support detonation wave is given. Based on this model, the related experimental flat is set up. The development of the Q part of the three pulse laser power supply is completed through the analysis of the multi pulse laser generation scheme, after debugging and the applicability experiment. The detonation wave acoustic signal is detected by the experimental platform and the surface morphology of the sample is scanned. The signal obtained in the bombardment experiment of the target is analyzed and verified. It is concluded that the acoustic signal obtained by the bombardment in the experiment is strong, and the characteristic of the frequency distribution of the acoustic wave is consistent with the frequency characteristic of the detonation wave, so the three pulse laser can effectively stimulate the detonation wave. In addition, the frequency range found in the frequency distribution of the signal frequency of the aluminum target is strong, and the amplitude of the frequency range of the silicon material is more than that of the three. According to the theoretical expectation, the related experiments of the multi pulse laser support the detonation wave show that the multi pulse laser ablated the aluminum material, produced hollow structure, erupted a large number of debris and turned to hollow structure, spread and deposited all around, and the effect of damage to the target was obvious.
【学位授予单位】：长春理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN249
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