Ultrasonic inspection of articles
US4068524A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1976 |
| Grant date | Jan 17, 1978 |
| Priority date | — |
| Expiry date | May 11, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N29/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of ultrasonically inspecting an article comprises the following steps: transmitting a succession of ultrasonic pulses into the article; for each transmitted pulse, detecting and registering electrically the reflected pulse from the front surface of the article; detecting and registering electrically, with a predetermined gain, any reflected pulses indicative of faults or discontinuities within the article; detecting and registering electrically, again with a predetermined gain, at least the first reflected pulse from the rear surface of the article; monitoring the amplitudes of the registered reflected pulse from the front surface and at least the first reflected pulse from the rear surface of the article; and continuously controlling gains for succeeding pulses in dependence on the amplitude of the reflected pulse from the front surface of the article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.