Real-time pavement profile sensing system using air-coupled surface wave
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United States of America Patent
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Mar 20, 2018
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app pub date -
Jan 20, 2012
filing date -
Jan 20, 2011
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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.
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