Weld penetration monitored by detection of high-frequency acoustic emissions produced by advancing weld pool as it melts and solidifies in workpiece. Acoustic emission from TIG butt weld measured with 300-kHz resonant transducer. Rise in emission level coincides with cessation of weld penetration due to sudden reduction in welding current. Such monitoring applied to control of automated and robotic welders.
Acoustic-Emission Weld-Penetration Monitor
NASA Tech Briefs ; 10 , 1
1986-06-01
Sonstige
Keine Angabe
Englisch
Acoustic emission weld monitor system. Data acquisition and investigation
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