Proposed ultrasonic stimulator vibrates weld puddle without making contact. Vibration breaks up large grain clumps in solidifying puddle, creating more uniform, fine-grain microstructure. Resulting weld joint less susceptible to hot cracking and other stress-related forms of degradation.
Noncontact Ultrasonic Vibration Of Weld Puddles
NASA Tech Briefs ; 14 , 11
1990-11-01
Miscellaneous
No indication
English
Noncontact Electromagnetic Vibration Source
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