e.h cayo - university of brasilia
s.c.a alfaro

the welding is a manufacture processes most used in the metallic building industry when the welding reached industrial scales the demands and quality requirements also were multiplying to guarantee the welding quality certain cares are taken as visual inspections non-destructive testing and destructive testing these inspections and tests are made after the welding process that increases the final production cost because the are necessary qualified technicians sophisticated equipment and working hours during the welding the electric are generates physical phenomenons as the infrared emission electromagnetic field luminosity acoustic pressure among others phenomenons some those phenomenons are noticed by experienced operators to monitor and to control the welding operations.

GMAW-S,emissions ,monitoring ,detecting,disturbances welding