×

Method for detecting and identifying defects in a laser beam weld seam

  • US 20040032597A1
  • Filed: 12/30/2002
  • Published: 02/19/2004
  • Est. Priority Date: 07/06/2000
  • Status: Active Grant
First Claim
Patent Images

1. A method for detecting and identification of defects at the time of realizing a welding seam (6) by means of a laser beam (14) forming a plasma in a welding region, according to which at least tow measurement signals are acquired in real time, said signals being supplied by distinct optical sensors (C1 to C6) that detect the variations in luminous intensity of the plasma, characterized in that the measurement signals are combined by applying to them at least one mathematical operator suitable for detecting a corresponding defect, in order to obtain at least one combined signal;

  • each combined signal is compared to a predefined threshold and the presence or absence of a defect is diagnosed that corresponds to each mathematical operator according to the result of the comparison.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×