Method and Apparatus for Real Time Weld Monitoring
  • Release Date : 21 September 1997
  • Publisher : Unknown
  • Genre : Uncategorized
  • Pages : 122 pages
  • ISBN 13 : OCLC:873759690
Ratings: 4
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Download or read book entitled Method and Apparatus for Real Time Weld Monitoring by author: Anonim which was release on 21 September 1997 and published by Unknown with total page 122 pages . This book available in PDF, EPUB and Kindle Format. An improved method and apparatus are provided for real time weld monitoring. An infrared signature emitted by a hot weld surface during welding is detected and this signature is compared with an infrared signature emitted by the weld surface during steady state conditions. The result is correlated with weld penetration. The signal processing is simpler than for either UV or acoustic techniques. Changes in the weld process, such as changes in the transmitted laser beam power, quality or positioning of the laser beam, change the resulting weld surface features and temperature of the weld surface, thereby resulting in a change in the direction and amount of infrared emissions. This change in emissions is monitored by an IR sensitive detecting apparatus that is sensitive to the appropriate wavelength region for the hot weld surface.