Shenyang Automation Institute successfully developed laser impact enhanced acoustic online detection system

[ Instrument Network Instrument Development ] In order to solve the problems of laser shock enhancement existing detection methods and promote large-scale industrial production of this technology, Shenyang Institute of Automation, Chinese Academy of Sciences has developed a laser impact enhanced acoustic online detection system, the relevant results were published in Optik - International Journal for Light and Electron Optics.

Laser shock enhanced acoustic online detection system

Laser shock peening is a surface modification technique that uses laser-induced plasma shock waves to strengthen metal materials. Surface roughness, microstructure changes, hardness, residual stress, etc. are important parameters for measuring the quality of laser shock strengthening. However, these parameters are Obtained, currently through offline testing methods, these methods are inefficient, can not change the process in time, and limit the large-scale industrial production of laser shock enhancement, so it is urgent to develop non-destructive online detection methods and systems.

In 2011, Shenyang Institute of Automation Technology Equipment and Intelligent Robotics successfully developed China's first integrated leaf disk laser impact enhancement system, which filled the gap in China. Based on the accumulation of previous technologies, the research team developed a laser impact enhanced acoustic online detection system. In actual industrial production, the self-developed signal acquisition system is used to collect the acoustic signals in the laser shock enhancement process by means of on-line detection, perform on-line analysis processing and extract the acoustic characteristic parameters of the materials, according to the obtained acoustic characteristic parameters. Predict and evaluate the quality of laser shock enhancement.

The research was supported by the NSFC-Liaoning Province Joint Fund, the National Natural Science Foundation, the National Key R&D Program, and the National Science and Technology Support Program.