Ultrasonic method and device for volumetric examination of aluminothermic rail welds
US9816964B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2014 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Apr 13, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8929
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic non-destructive testing method and device for rail applications uses a plurality of phased array transducers to inspect aluminothermit weld defects located in a head portion, a web portion, an ankle portion, and a toe portion of a weld of a rail section. The method includes: scanning the head portion of the weld including: a first phased array transducer positioned above the weld and a second phased array transducer positioned a distance from the first phased array transducer to provide inclined access to the weld; and scanning the toe portion of the weld including: positioning pairs of third, fourth, and fifth phased array transducers on a surface of the toe portion, such that the pairs of third, fourth and fifth phased array transducers are disposed symmetrically with one of the pair on each side of the toe portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.