Method for inspecting joined material interfaces
US7938007B2 · kind B2 · utility
5Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 2008 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Oct 4, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2675
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for inspecting joined material interfaces, such as butt fusion pipe joints of plastic pipes, using ultrasonic waveforms to discriminate between acceptable and unacceptable interfaces. The waveforms (amplitude vs time) having been transmitted to a material interface of interest are divided into a number of time zones and the amplitudes of the waveforms within the time zones compared against waveform amplitudes obtained from known acceptable joined material interfaces to determine the quality of the material interface of interest.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.