Method and apparatus for evaluating welds using stress-wave emission techniques
CA 1079843 A · Owner: Western Electric Company, Incorporated · Inventors: Vahaviolos, Sotirios J.; Saifi, Mansoor A.
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Abstract of the Disclosure Spot welds are evaluated using stress-wave emission techniques by measuring the stress-wave energy emitted from the weld area during n time intervals of the weld cycle, where n?4. Each of the time intervals corresponds to a different aspect of the weld cycle such as,for example, the initiation of heating the separate, solid-to-liquid phase transformation in each of the articles being welded, material combination within the weld nugget cooling stresses occurring during resolidification and, post-weld cracking. The energy values obtained for each of the time intervals can be compared with predetermined acceptable energy value ranges for corresponding ones of the …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
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- Granted June 17, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 17, 1997.
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