During a spot laser welding process, a correlation between the generated sound and the obtained welding characteristics can be observed by preliminary experimental studies. This paper aims at understanding and explaining this correlation through a numerical finite element approach. A thermal-hydraulic model predicting the size of the capillary and the melted zone has been coupled with a simplified model of the sound propagation in the surrounding air. Different assumptions are then discussed and validated by confronting the numerical predictions with experimental data.

Date Published: 9 March 2020
PDF
Proc. SPIE 11267, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXV, 1126711 (9 March 2020); doi: 10.1117/12.2544115

Published in SPIE Proceedings Vol. 11267:
Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXV
Gediminas Račiukaitis; Carlos Molpeceres; Jie Qiao; Aiko Narazaki, Editor(s)