Acoustic emission test equipment and analysis technology for rock breaking
US11280762B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 29, 2019 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Jul 26, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0232
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for monitoring rock damage in deep engineering environment includes an acoustic emission sensor assembly and an acoustic emission amplifier assembly. The assemblies are mounted on a rock mechanics test system. The acoustic emission sensor clamp includes a coupling screw, as well as a clamp cover, a clamp cylinder, and a coupling panel threadedly connected in sequence. The acoustic emission amplifier assembly includes an acoustic emission amplifier, an upright column having a guide rail, a lifting support plate, and a support plate lifting oil cylinder. Additionally, an evaluation method based on acoustic emission tempo-spatial evolution laws is presented. According to the properties of acoustic emission, fractal characteristics of damage evolution processes of rock test pieces are analyzed and the relationship between stress, energy and fractal dimension in the whole process of tensile deformation damage of the rock test pieces is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.