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Non-destructive testing of slab-like structures including pavements using Lamb and Rayleigh waves-based dispersion analysis

Kumar, J and Gohil, RR (2023) Non-destructive testing of slab-like structures including pavements using Lamb and Rayleigh waves-based dispersion analysis. In: International Journal of Pavement Engineering, 24 (1).

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Official URL: https://10.1080/10298436.2023.2180147


Lamb and Rayleigh waves-based dispersion analysis has been carried out for non-destructive surface wave testing of different slab-like structures involving a concrete roof slab, a concrete floor, a concrete pavement, and an asphaltic pavement. An impact was generated by gently striking the slab’s free surface with a hammer. A method has also been given to generate the governing (predominant) dispersion mode in the case of Rayleigh wave propagation considering the complex nature of the dispersion function (Formula presented.); (Formula presented.) and (Formula presented.) refer to phase velocity and wavenumber, respectively. The theoretical dispersion plots generated from the inversion analysis by varying the values of different input parameters were subsequently closely matched with the corresponding obtained field dispersion images for different cases in order to back compute the elastic profile of the slab/pavement. For developing the dispersion images, the Park’s wavefield transformation method was employed. For checking the thicknesses of the different layers, cylindrical cores were also extracted. The study is expected to be useful for evaluating different slab-like structures, including pavements, by using surface wave-based non-destructive tests. © 2023 Informa UK Limited, trading as Taylor & Francis Group.

Item Type: Journal Article
Publication: International Journal of Pavement Engineering
Publisher: Taylor and Francis Ltd.
Additional Information: The copyright of this article belongs to Taylor and Francis Ltd.
Keywords: dispersion; Lamb waves; MASW technique; Non-destructive testing; pavements; Rayleigh waves
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 10 Mar 2023 10:36
Last Modified: 10 Mar 2023 10:36
URI: https://eprints.iisc.ac.in/id/eprint/80912

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