System for non-contact interrogation of railroad axles using laser-based ultrasonic inspection
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United States of America Patent
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Issued Date -
Sep 14, 2006
app pub date -
Mar 13, 2006
filing date -
Mar 14, 2005
priority date (Note) -
Abandoned
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Abstract
A system for ultrasonic inspection of railroad axles uses a laser to project a series of pulses onto the axle to create an ultrasonic signal propagating along the surface of the axle. An air-coupled detector detects the ultrasonic signal at a position on the axle spaced apart from the laser impact region. The ultrasonic signal can then be analyzed to detect the presence of a reflected wave indicating the presence of a defect in the axle.
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