Ultrasonic test system
US5339691A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1993 |
| Grant date | Aug 23, 1994 |
| Priority date | — |
| Expiry date | Oct 13, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H5/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic system for determining the quality of concrete under water hout inaccuracies caused by electromagnetic interference from the ultrasonic generator. An ultrasonic generator applies pulses to the concrete. An ultrasonic detector detects the ultrasonic pulses and produces corresponding signals that are indicative of ultrasonic pulses that have passed through the material. Signal processing circuitry processes the signals to determine the transit time of the ultrasonic pulses through the material. The signal processing circuitry is disabled for a predetermined time after application of each ultrasonic pulse to the material to prevent noise produced by the means for applying ultrasonic pulses to the material from entering the signal processing circuitry and causing spurious measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.