Stress detection in rail

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United States of America Patent

PATENT NO 9689760
SERIAL NO

14356615

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Methods and apparatus, including computer program products, are provided for determining rail stress. The method may include generating at least one ultrasonic guided wave to enable the at least one ultrasonic guided wave to propagate through a rail; detecting at least one of a fundamental frequency component of the at least one ultrasonic guided wave, one or more harmonics of the at least one ultrasonic guided wave, and/or a mixing component of the at least one ultrasonic guided wave; and determining a stress of the rail based on at least a nonlinearity parameter determined from the detected at least one of the fundamental frequency component, the one or more harmonics, and the mixing component. Related apparatus, systems, methods, and articles are also described.

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Patent Owner(s)

Patent OwnerAddress
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA1111 FRANKLIN STREET OAKLAND CA 94607-5200

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Coccia, Stefano Los Angeles, US 8 119
Lanza, di Scalea Francesco San Diego, US 4 105
Nucera, Claudio San Diego, US 2 64
Phillips, Robert El Cajon, US 57 1597

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