Transient elastic deformation detection on the metal surface induced by nanosecond laser pulse

Yanqun Tong; Jianyu Huang; Xiaoyi Wu; Lin Shi

doi:10.1117/12.2246986

19 October 2016 Transient elastic deformation detection on the metal surface induced by nanosecond laser pulse

Yanqun Tong, Jianyu Huang, Xiaoyi Wu, Lin Shi

Proceedings Volume 10153, Advanced Laser Manufacturing Technology; 1015310 (2016) https://doi.org/10.1117/12.2246986
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China

Abstract

It is difficult to detect the elastic deformation on the metal surface induced by nanosecond laser pulse. Optical fiber sensor system is suitable for detecting the elastic deformation, which has many advantages such as the high sensitivity, fast speed (GHz), non-contact, non-loss and point-measurement. We set up the measuring system to analyze the deformation mechanism firstly. Then, the elastic deformation on the metal surface was investigated. The relation between the shock-wave and elastic deformation was analyzed. The result of the present work implicated that as the nanosecond laser pulse radiated to the metal surface, elastic deformation had a delay time which was around 320ns. And the deformation presented the damped oscillation law. The data of laser-induced plasma shock wave were fitted and the fitting degree was 97.696%.The variation law of laser-induced plasma shock-wave was obtained. These results helped to make the laser removal applied to the manufacturing technique better.

Citation Download Citation

Yanqun Tong, Jianyu Huang, Xiaoyi Wu, and Lin Shi "Transient elastic deformation detection on the metal surface induced by nanosecond laser pulse", Proc. SPIE 10153, Advanced Laser Manufacturing Technology, 1015310 (19 October 2016); https://doi.org/10.1117/12.2246986

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