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    Influence of Source and Receiver Geometry on the Testing of Pavements by the Surface Waves Method

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    The spectral analysis of surface waves (SASW) method is a nondestructive testing procedure under development for determining the elastic modulus profile of pavement systems in situ. The ultimate goal in the development of the SASW method is a totally automated, moveable test rig for conducting the investigation. An important step toward this objective is the development of a multiple transducer testing procedure. A significant variable with respect to a multiple transducer testing procedure is the choice of source and receiver geometry. A series of tests were conducted on an asphaltic concrete pavement to study the influence of source and receiver geometry. It was found that the results obtained from two different geometries, the common receivers midpoint (CRMP) geometry and the common source (CS) geometry, were nearly identical. The common source (CS) geometry was concluded to be preferable because of its practical advantage of a fixed source location.


    dispersion curve, elastic modulus, inversion, nondestructive testing, Rayleigh wave, shear wave, spectral analysis

    Author Information:

    Hiltunen, DR
    Assistant professor, The Pennsylvania State University, University Park, PA

    Woods, RD
    Professor, University of Michigan, Ann Arbor, MI

    Committee/Subcommittee: D04.39

    DOI: 10.1520/STP19804S