Micro-resolution ultrasonic nondestructive imaging method
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United States of America Patent
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Sep 1, 2020
Grant Date -
Dec 28, 2017
app pub date -
Jun 23, 2017
filing date -
Jun 24, 2016
priority date (Note) -
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Abstract
A system and methods of nondestructive testing are described. The system includes an immersion ultrasonic probe and a laser vibrometer. The immersion ultrasonic probe and a sample are immersed in a fluid contained in an immersion tank and the laser vibrometer is disposed outside of the immersion tank. A tightly focused ultrasonic beam from the immersion ultrasonic probe and a laser beam from the laser vibrometer are both transmitted upon a sample, the laser beam being transmitted through the wall of the immersion tank. Since the ultrasonic beam is tightly focused and the laser beam samples only a small area impinged by the ultrasonic beam, microscopic resolution is obtained.
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