Ultrasonic inspection method and ultrasonic inspection apparatus
US8250923B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2009 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Dec 20, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2675
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic inspection method and ultrasonic inspection apparatus is capable of inspecting a weld line and of detecting a circumferential crack and an axial crack that are present in the weld line. An ultrasonic probe is placed on the surface of a structure and transmits an ultrasonic wave. The ultrasonic wave is transmitted at an angle in an X′-Z plane. The direction of a normal to the surface is defined as an X axis. The direction in which the weld line extends is defined as a Y axis. The direction perpendicular to the X axis and the Y axis is defined as a Z axis. An axis obtained by rotating the X axis around the Z axis is defined as an X′ axis. A control mechanism performs signal processing of signals reflected from the defect or defects to detect the defect or defects and to measure the length of the defect or defects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.