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《Opto-Electronic Engineering》 2017-07
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Development of laser shock peening equipment

Taiyou Hu;Hongchao Qiao;Jibin Zhao;Ying Lu;State Key Laboratory of Robotics, Shenyang Institute of Automation Chinese Academy of Sciences;School of Computer and Control Engineering, University of Chinese Academy of Sciences;  
In view of the issue that the present domestic industrialization of laser shock peening equipment is not high, a laser shock peening equipment has been developed by using fixed optical system structure and modular design method. The design scheme of laser shock peening equipment, the characteristics of laser optical path arrangement and the system control method are analyzed, and the technical specifications of laser shock peening equipment are tested. When the room temperature stables at(22 ± 2) ℃ and 20 minutes after the device is switched on, the technical parameters such as the maximum output single pulse energy up to 25 J, energy instability 3%, pulse width which can be continuously adjusted between 16 ns and 20 ns, pulse width instability (-1 ns~1 ns),beam divergence 2.5 mrad, beam points instability 50 μrad, the repetition rate of 0.5 Hz冾5 Hz are achieved, the transmission efficiency of the optical system is about 92%, the thickness of the constraint layer is uniform and the flow rate is continuously controlled. The test results show that the performance of the laser shock peening equipment is good enough for industrial applications.
【Key Words】: laser shock peening equipment laser control system optical system
【Fund】: 国家自然科学基金资助项目(51501219)
【CateGory Index】: TN249
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