Automatic ultrasonic testing method
US4799387A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1987 |
| Grant date | Jan 24, 1989 |
| Priority date | — |
| Expiry date | Dec 1, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/044
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an automatic ultrasonic testing method for automatically detecting an internal flaw of articles such as a solid-core station post insulator and a long-rod insulator in which ultrasonic noises are liable to be generated in ultrasonic testing waveform, use is made of a standard waveform having a plurality of maximum peak hold data in predetermined intervals at all the detecting points and obtained by detecting the normal article including the ultrasonic noises, with which ultrasonic testing waveforms of an article to be tested are compared. Therefore, it is possible to eliminate an instability of the ultrasonic testing waveform and to detect a flaw echo having a level lower than that of the ultrasonic noises.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.