Defect detection method of turbine generator end ring
US8091424B2 · kind B2 · utility
1Cited by
10References
2Claims
0Family size
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Key dates
| Filing date | Sep 22, 2008 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Sep 23, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2693
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A defect detection method of a turbine generator end ring includes a first ultrasonic testing step of conducting ultrasonic testing by an angle beam technique to the turbine generator end ring, a second ultrasonic testing step of conducting, when an indication echo is detected by the first ultrasonic testing step, ultrasonic testing by a focusing straight beam technique to a portion of the turbine generator end ring from which an indication echo is detected and an interpretation step of interpreting whether the indication echo is a defect echo or a false echo based on a testing result by the second ultrasonic testing step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.