Evaluation of Damage Depth Inside Concrete Using Surface Wave Tomography

Surface wave tomography using an elastic wave is one of the nondestructive testing methods used for evaluating internal soundness of concrete structures. This study experimentally investigated the depth of a defect detectable by the surface wave tomography, generating elastic waves with varied frequ...

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Bibliographic Details
Published inJournal of acoustic emission Vol. 36; p. S81
Main Authors Ogura, Norihiko, Konishi, Yuji, Shiotani, Tomoki
Format Journal Article
LanguageEnglish
Published Acoustic Emission Group 01.01.2019
Subjects
Concrete
Tomography
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Summary:Surface wave tomography using an elastic wave is one of the nondestructive testing methods used for evaluating internal soundness of concrete structures. This study experimentally investigated the depth of a defect detectable by the surface wave tomography, generating elastic waves with varied frequencies. The detectable damage depth was successfully determined for each frequency level of the elastic wave based on the obtained results. It was also found that internal damage evaluation layered in the depth direction was possible even with a single elastic wave by applying the wavelet transform and sorting the data by target frequency. Keywords: surface wave tomography, elastic wave, nondestructive testing, Rayleigh wave, wavelet transform
ISSN:0730-0050