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WELDING SYSTEM AND WELDING METHOD

  • US 20110284508A1
  • Filed: 05/19/2011
  • Published: 11/24/2011
  • Est. Priority Date: 05/21/2010
  • Status: Abandoned Application
First Claim
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1. A welding system comprising:

  • a welding mechanism that welds an object to be welded while moving along a welding line relative to the object to be welded;

    a transmission laser light source that generates transmission laser light;

    a transmission optical mechanism that transmits, during or after welding operation, the transmission laser light generated from the transmission laser light source to surface of the object to be welded for irradiation while moving, together with the welding mechanism, relative to the object to be welded so as to generate a transmission ultrasonic wave;

    a reception laser light source that generates reception laser light so as to irradiate the object to be welded with the reception laser light for the purpose of detecting a reflected ultrasonic wave obtained as a result of reflection of the transmission ultrasonic wave;

    a reception optical mechanism that transmits, during or after welding operation, the reception laser light generated from the reception laser light source to the surface of the object to be welded for irradiation while moving, together with the welding mechanism, relative to the object to be welded and collects laser light scattered/reflected at the surface of the object to be welded;

    an interferometer that performs interference measurement of the scattered/reflected laser light; and

    a data recording/analysis mechanism that measures and analyzes an ultrasonic signal obtained by the interferometer.

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