Inventors:
David J. Jenuwine - Utica MI
Jacob N. George - Sterling Heights MI
Assignee:
General Motors Corporation - Detroit MI
International Classification:
G01N 2914
B23K 2600
Abstract:
An on-line, non-destructive method and apparatus monitors a welding process and detects faulty welds by analyzing the average frequency of the airborne radiation emitted from a weld during the welding process. A sequence of measured average frequency values corresponding to sequential blocks of time during the weld are individually compared to a predetermined frequency threshold value. Overall weld integrity is discerned by comparing the number of average frequency values exceeding the threshold value to the number of average frequency values not exceeding the threshold value.