Test cell for applying directionally variable three dimensional stress fields to a test specimen
US5379645A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1993 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | Jul 23, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0256
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a test cell 1 suitable for use in applying directionally variable three dimensional stress fields to cylindrical test specimens 6 normally obtained by conventional coring techniques used for sample recovery. The test cell 1 comprises a cell body 2 having a barrel 4 extending therethrough for receiving a test specimen 6. The barrel 4 has an array 8 of elongate tubes 10 mounted side-by-side so as to line the inside wall 12 of the barrel. The tubes 10 have flexible side walls 14 and are formed and arranged for connection to a pressurized fluid supply 16. The test cell 1 also includes a control system 15 so that at least one tube 10a can be supplied with pressurized fluid at a different pressure to that in another tube 10b so as to provide an angularly variable radial pressure loading on the test specimen 6 mounted in the barrel 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.