Ultrasonic testing
US4611495A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 5, 1984 |
| Grant date | Sep 16, 1986 |
| Priority date | — |
| Expiry date | Sep 5, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N29/265
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In the ultrasonic testing of a casting for defects an ultrasonic probe is mounted in a tank of water and scans across a surface of the casting which faces downwards just below the surface of the water. A pantograph linkage interconnects the probe with a pointer that is movable by an operator over a facsimile of the surface scanned by the probe. The interconnection is such that each position of the probe is represented by a corresponding position of the pointer and as the pointer is moved over the facsimile of the surface the probe scans the surface of the casting. The water ensures that there is good acoustic coupling between the probe and casting and the pantograph linkage reduces the skill and concentration required by the operator. Conveniently, only anomalous signals arising from defects are passed on from the probe to the operator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.