Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2007.05a
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- Pages.1294-1298
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- 2007
Coaxial Monitoring during Laser Lap Welding
겹치기 이음부의 레이저용접 동축 모니터링
- Published : 2007.05.30
Abstract
Welding process monitoring is advantageous for maintaining weld quality and numerous sensing techniques have been developed for laser welding. Coaxial image monitoring enables direct monitoring of the weld pool shape and keyhole behavior, but requires the complex optical system and the image processing technique. In this study, we coaxially acquired the weld pool images during laser lap welding by using the camera and special illumination. The welding characteristics - pool width and length, keyhole shape, etc - were extracted by using image processing and the relationship between these characteristics and the penetration depth were investigated.