Jiangsu University

Chun Su

Shu Huang

Jianzhong Zhou

Xiankai Meng

Jie Sheng

Jing Li

Hansong Chen

Jiale Xu

Hongda Zhou

Xiangwei Yang

In a cryogenic workbench, a cryogenic laser peening system and a control method, a tapered surface gap d is adjusted, based on the electromagnetic principle, to control the gasification volume of liquid nitrogen, then the temperatures of the copious cooling workbench and the surface of a sample are precisely controlled by means of the adjustment of the heat absorption amount of liquid nitrogen gasification, the temperature adjustment range and the temperature rising/lowering rate of the cryogenic laser peening system are effectively extended, and the precision of the control of the surface temperature of the sample is increased in combination with a closed-loop control. Additionally, an intelligent control of a cryogenic laser peening process is realized by means of a computer and a PLC control unit, whereby the usage amount of liquid nitrogen in the experiment process is reduced and the processing efficiency is improved.

Cryogenic workbench, cryogenic laser peening experiment system and control method therefor

A method and a device for increasing a laser induced shock wave pressure. According to the method, plasmas () are generated by impinging an aluminium foil () using lasers; a high-voltage pulse electrode () discharges to the plasmas () to induce and form a photoelectric combined energy field and then high-temperature plasmas () having the characteristics of an ultra-high density and an ultra-high speed expansion are induced and generated; a surface to be processed is impacted by the high-temperature plasmas () in a restrained state; the laser induced shock wave pressure is increased substantially; the surface of a high-strength material is reinforced, and the strength, hardness, abrasion resistance and anti-fatigue performances of the high-strength material are improved. The device comprises a laser, the electrode (), a high-voltage power supply (), a discharging medium (), a moving platform, etc.

Method and device for increasing laser-induced shock wave pressure

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Jiangsu, China

Chun Su