Void detector for buried pipelines and conduits using acoustic resonance
US6386037B1 · kind B1 · utility
4Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2001 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Jun 6, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2636
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system are provided for detecting a void in backfill material such as soil surrounding a buried conduit such as a pipeline. The void is detected by monitoring an acoustic response from the conduit in response to acoustic excitation of the interior of the conduit. An analysis of changes in the acoustic response is then related to the presence or absence of a void in the backfill material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.