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Type: Conference paper
Title: Evaluation of signal processing schemes in guided wave damage identification
Author: Ng, C.
Citation: Proceedings of the Fourth International Symposium on Life-Cycle Civil Engineering, as published in Life-Cycle of Structural Systems: Design, Assessment, Maintenance and Management, 2014 / Furuta, H., Frangopol, D., Akiyama, M. (ed./s), pp.1043-1050
Publisher: CRC Press
Issue Date: 2014
ISBN: 1138001201
ISSN: 2211-7903
Conference Name: Fourth International Symposium on Life-Cycle Civil Engineering (16 Nov 2014 - 19 Nov 2014 : Tokyo, Japan)
Editor: Furuta, H.
Frangopol, D.
Akiyama, M.
Statement of
C.T. Ng
Abstract: This paper presents an evaluation of the performance of signal processing schemes in guided wave damage identification. A Bayesian probabilistic approach is proposed to not only provide quantitative identification results. The levels of accuracy and degree of uncertainty associated with the damage identification results using data extracted by four signal processing schemes, Hilbert transform, Fast Fourier transform, Gabor wavelet transform and discrete wavelet decomposition, were compared in detail. The guided wave signals used in this study were experimentally measured from beams with a single damage. Two damage cases were considered in the study and the results shows that a suitable signal processing scheme produces more robust identification of damage in a structure.
Rights: © Taylor & Francis Group
DOI: 10.1201/b17618-153
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Appears in Collections:Aurora harvest 8
Civil and Environmental Engineering publications

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