Real-time pavement profile sensing system using air-coupled surface wave
US9921187B2 · kind B2 · utility
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12References
22Claims
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Key dates
| Filing date | Jan 20, 2012 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Oct 30, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/044
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A non-contact testing system and method using acoustic sensors and a mobile sensing system using this system and method is disclosed. The leaky surface wave is recorded with directional microphones. A fast inversion analysis algorithm is introduced to estimate the shear velocity profile and elastic modulus for the subsurface layers of pavement structures, using the dispersion curves obtained from the acoustic signals. An electrical hammer is used to produce impact impulses automatically. A mobile sensing system is integrated on a mobile cart to perform the mobile subsurface sensing for pavement structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.