Examination of a novel wavelet based approach for bender element testing

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Title: Examination of a novel wavelet based approach for bender element testing
Authors: Bonal, Julien
Donohue, Shane
McNally, Ciaran
Permanent link: http://hdl.handle.net/10197/2284
Date: Dec-2008
Abstract: Accurate determination of shear wave arrival time using bender elements may be severely affected by a combination of near field effects and reflected waves. In most cases, the nearfield effect masks the first arrival and it makes its detection difficult in the time domain. Nevertheless the arrival of a shear wave creates a detectable singular point. This paper tests a recent approach for the assessment of shear wave arrival time by analysing the output signal in the time-scale domain using a multi-scale wavelet transform. Indeed, one can follow the local maxima lines of the wavelet transform modulus across scales, to detect the location of all singularities leading to detection of the first arrival.
Funding Details: Not applicable
Type of material: Conference Publication
Keywords: Bender elements;Shear wave velocity;Wavelet
Subject LCSH: Shear waves--Measurement
Wavelets (Mathematics)
Language: en
Status of Item: Peer reviewed
Is part of: E. Cannon, R. West and P. Fanning (eds.). Proceedings of 4th Symposium on Bridge and Infrastructure Research in Ireland
Conference Details: Presented at the 4th Symposium on Bridge & Infrastructure Research in Ireland, 4-5 December 2008, Galway, Ireland
Appears in Collections:Critical Infrastructure Group Research Collection
Civil Engineering Research Collection

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