Coaxial monitoring of temperature field in selective pulsed laser melting

Che Liu; Zhongyun Chen; Hongzhong Cao; Jianhong Zhou

doi:10.1117/12.2286275

24 October 2017 Coaxial monitoring of temperature field in selective pulsed laser melting

Che Liu, Zhongyun Chen, Hongzhong Cao, Jianhong Zhou

Proceedings Volume 10457, AOPC 2017: Laser Components, Systems, and Applications; 104573G (2017) https://doi.org/10.1117/12.2286275
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China

Abstract

Selective Laser Melting is a rapid manufacturing technology which produces complex parts layer by layer. The presence of thermal stress and thermal strain in the forming process often leads to defects in the formed parts. In order to detect fabricate errors and avoid failure which caused by thermal gradient in time. An infrared thermal imager and a high speed CCD camera were applied to build a coaxial optical system for real-time monitoring the temperature distribution and changing trend of laser affected zone in SLM forming process. Molten tracks were fabricated by SLM under different laser parameters such as frequency, pulse width. And the relationship between the laser parameters and the temperature distribution were all obtained and analyzed.

Citation Download Citation

Che Liu, Zhongyun Chen, Hongzhong Cao, and Jianhong Zhou "Coaxial monitoring of temperature field in selective pulsed laser melting", Proc. SPIE 10457, AOPC 2017: Laser Components, Systems, and Applications, 104573G (24 October 2017); https://doi.org/10.1117/12.2286275

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