A study of weld monitoring using light emission in Aluminum 6K31 laser welding

알루미늄 6K31의 레이저 용접에서 Light Emission을 이용한 용접부 모니터링에 관한 연구

In automotive industry, light weight vehicle is one of issues because of air pollution. Therefore, automotive manufacturers have tried to apply light materials such as aluminum to car body. Welding aluminum using laser has some advantages good weld quality and high productivity. In this study, light emission which is generated in aluminum 6k21 welding with laser is measured using photodiodes. Analysis of relationship between sensor signals of welding variables and formation of keyhole and plasma is performed.