METHOD FOR DETECTING AND IDENTIFYING DEFECTS IN A LASER BEAM WELD SEAM

摘要

The invention concerns a method for identifying defects in a laser beam weld seam, which consists in: acquiring in real time at least two measuring signals delivered by optical sensors (C1 to C6) detecting light intensity variations in the plasma formed by the laser beam (14); then, in combining said signals by applying thereto a mathematical operator; then comparing the resulting combined signal to a predetermined threshold and depending on the result of said comparison, diagnosing the presence or absence of a defect corresponding to the operator used.