Miniaturized contactless sonic IR device for remote non-destructive inspection
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United States of America Patent
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Jun 4, 2002
Issued Date -
N/A
app pub date -
Sep 15, 2000
filing date -
Sep 16, 1999
priority date (Note) -
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Abstract
A thermal imaging system for detecting cracks and defects in a component. An electromagnetic acoustic transducer (EMAT) is coupled to the component, and introduces pulsed sound signals therein. The sound signals cause the defects to heat up. The IR radiation from the heated pulses is detected by a thermal camera. The amplitude of the pulsed signals are substantially constant, and the frequency of the pulsed signal can be changed within each pulse. A control unit is employed to provide timing and control for the operation of the EMAT and the camera.
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