IMPROVEMENTS IN OR RELATING TO ULTRASONIC METHODS OF TESTING
Patent
·
OSTI ID:4671766
An ultrasonic method of testing the grain refinement in the outer annular region of a metal bar is patented. The method is especially applicable to measuring the grain size of U bars for use in reactor fuel elements. A pulsed ultrasonic beam is directed through the bar, with the transmitter and receiver mounted on either side of the bar on a chord displaced from the diameter. The bar, transmitter, and receiver are totally immersed in a suitable liquid, such as water. In the absence of the bar, the beam would be transmitted directly from transmitter to receiver. The attenuation of the pulses transmitted through the outer annular region of the bar is measured, the attenuation being proportional to the grain size. (M.P.G.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-17-032263
- OSTI ID:
- 4671766
- Report Number(s):
- GB 930687
- Country of Publication:
- United Kingdom
- Language:
- English
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