Abstract

To fully exploit the productivity and flexibility of laser beam welding unit, a reliable monitoring is necessary. Different physical phenomena like light emission and temperature are usually observed and evaluated for that purpose [1]. The aim of this paper is to extend the observed phenomenon to sound which is produced during welding and spread into surrounding air. We were encouraged to succeed by experienced welder who is usually able to distinguish between good and faulty welding procedures by simply listening to the process.

© 1996 IEEE