SEDL / STP / STP223-EB / STP41998S

Ultrasonic Transmission Tester for Detection of Unbonded Areas

Ross, J. D.
Savannah River Laboratory, E. I. du Pont de Nemours and Co., Inc., Aiken, S. C.

Leep, R. W.
Savannah River Laboratory, E. I. du Pont de Nemours and Co., Inc., Aiken, S. C.

Pages: 8    Published: Jan 1958

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Abstract

Through-transmission of an ultrasonic beam is a convenient method of testing objects for internal flaws. An ultrasonic pulse is transmitted through the object under inspection and the received pulse is checked for abnormal attenuation. The abnormally attenuated pulses can be counted as the object is scanned, and the total count is a measure of the area over which the defect extends.