Automatic calibration for phased array inspection of girth weld
US9476859B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2013 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Nov 14, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2675
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A calibration method for calibrating a phased array probe that is used for testing girth welds for defects. The method utilizes a calibration device on which is defined a series of reflectors that correspond to a series of target zones. The phased array probe is placed via a wedge relative to the calibration device and the phased array probe is configured with an initial set of acoustic parameters which define at least a transmitting aperture, a receiving aperture and a beam steering angle. Using a Full Matrix Capture (FMC) acquisition process and a ray-tracing module, the values of the initial set of acoustic parameters are optimized to evolve a final set of acoustic parameters which the phased array probe utilizes for testing actual devices for weld defects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.