NASA NTRS · 19720000593
Spark ultrasonic transducer
Abstract
Nondestructive testing by spark transducer induces ultrasonic pulses in materials without physical contact. High power pulse generator connected to step up transformer produces sparking between two tungsten rods and ultrasonic energy pulses in test samples placed between rods.
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Hoop, J. M.. 1972-12-01. Spark ultrasonic transducer. https://ntrs.nasa.gov/citations/19720000593
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