Method and apparatus for nondestructive testing of cement
US4259868A · kind A · utility
45Cited by
1References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1979 |
| Grant date | Apr 7, 1981 |
| Priority date | — |
| Expiry date | Oct 1, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/02872
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus for the nondestructive testing of cement slurry samples as a function of time are disclosed. A sample placed in a temperature and pressure controlled autoclave is coupled to transducer means under computer control. Ultrasonic energy is propagated through the sample and the transit time is measured. A predetermined relationship relating transit time to compressive strength is employed and enables the determination of compressive strength. The measurements are repetitively performed on up to eight samples simultaneously and the time history of the development of compressive strength is recorded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.