Transducer health diagnostics for structural health monitoring (SHM) systems
US7487059B2 · kind B2 · utility
16Cited by
1References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2007 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Jun 21, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0258
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for diagnosing the health of a transducer may include transmitting a signal to a transducer to cause the transducer to transmit a stress wave into an object being monitored, wherein the signal has a predetermined frequency range or bandwidth. The method may also include receiving response data for the transducer and transforming the response data to data representative of an impedance curve of impedance versus frequency for the predetermined frequency range. The method may further include extracting selected parameters from the impedance curve to diagnose the health of the transducer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.