Ultrasonic transmission technique, using reflector plate, indicates resistance to corona formation. Technique is useful as tool for mapping specific panels to permit selecting best areas of laminate for circuit board use. Procedure is relatively safe, fast, inexpensive, and uses commercially-available equipment.
Ultrasonic evaluation of high-voltage circuit boards
NASA Tech Briefs ; 3 , 1
1978-06-01
Miscellaneous
No indication
English
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