| 发明名称 |
STRESS DETECTION IN RAIL |
| 摘要 |
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. |
| 申请公布号 |
US2014316719(A1) |
申请公布日期 |
2014.10.23 |
| 申请号 |
US201214356615 |
申请日期 |
2012.10.30 |
| 申请人 |
The Regents of the University of California |
发明人 |
Lanza di Scalea Francesco;Nucera Claudio;Phillips Robert;Coccia Stefano |
| 分类号 |
G01L1/25 |
主分类号 |
G01L1/25 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method comprising:
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 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. |
| 地址 |
Oakland CA US |
