| ultrasonic |
An electronic method of non destructive testing utilizing sound waves.
출처: www.steel-pipes-tubes.com/steel-pipe-glossary.html
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| ultrasonic |
Sound waves pitched above the upper limit of human hearing.
출처: www.pendred.com/huglos.htm
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| ultrasonic |
Signals that are just above the frequency range of human hearing of approximately 20 kHz.
출처: www.hobbyprojects.com/dictionary/u.html
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| ultrasonic |
An NDE technique which relies on an ultrasonic beam passing through a coating and substrate and providing a signal from the back wall which is then detected. The height of this backwall echo depends on the discontinuity in impedance from the sprayed coating to the substrate. Bonding flaws can be easily seen by the weakening of the back wall echo.
출처: www.poeton.co.uk/w1/glossary.htm
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