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Start Over Resource Type Report Partner UNT Libraries Government Documents Department Collection Office of Scientific & Technical Information Technical Reports Year 1982 Month February Day 11th

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Detection and sizing of underbead cracks using ultrasonic nondestructive examination (open access)

Detection and sizing of underbead cracks using ultrasonic nondestructive examination

Ultrasonic nondestructive examination (NDE) will detect three mil deep underbead cracks in welds joining thin walled iridium hemishells. A correlation was developed to relate the amplitude of the signal reflected from the crack with crack wall area. The observed cracks occur in the weld underbead in the arc taper area during encapsulation of /sup 238/PuO/sub 2/ pellets for thermoelectric generators used in deep space exploration.
Date: February 11, 1982
Creator: Scarbrough, J.D. & Wierzbicki, W.M.
System: The UNT Digital Library