Methods and systems for ultrasonic rock bolt condition monitoring
US11619132B2 · kind B2 · utility
1Cited by
8References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 16, 2017 |
| Grant date | Apr 4, 2023 |
| Priority date | — |
| Expiry date | Aug 5, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0422
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A methods and systems for determining a change in condition of a rock bolt. Some methods may comprise, at a first point in time, propagating shear and longitudinal ultrasonic waves along the rock bolt to measure a first time of flight for each of the shear and longitudinal waves, at a second point in time after the first point in time, propagating shear and longitudinal ultrasonic waves along the rock bolt to measure a second time of flight for each of the shear and longitudinal waves, and using the relative changes of the first and second time of flights, determining the change in condition of the rock bolt section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.