Show simple item record Bonal, Julien Donohue, Shane McNally, Ciaran 2010-08-26T15:21:37Z 2010-08-26T15:21:37Z 2010 Thomas Telford Publishing Ltd. en 2012-03-01
dc.identifier.citation Geotechnique en
dc.identifier.issn 0016-8505
dc.identifier.issn 0016-8505 en
dc.description.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. These may mask the first arrival of the shear wave, making its detection difficult in the time domain. This paper describes an approach for measuring the shear wave arrival time through analysis of the output signal in the time-scale domain using a multi-scale wavelet transform. The local maxima lines of the wavelet transform modulus are observed at different scales and all singularities are mathematically characterised, allowing subsequent detection of the singularity relating to the first arrival. Examples of the use of the approach on typical synthetic and experimental bender element signals are also supplied, and these results are compared to those from other time and frequency domain approaches. The wavelet approach is not affected by near field effects and instead is characterised by a relatively consistent singularity related to the shear wave arrival time, across a range of frequencies and noise levels. en
dc.description.sponsorship Not applicable en
dc.format.extent 739915 bytes
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Institution of Civil Engineers/Thomas Telford Publishing
dc.relation.requires Critical Infrastructure Group Research Collection en
dc.relation.uri Publisher's website
dc.subject Wavelet en
dc.subject Bender element en
dc.subject Signal processing en
dc.subject Singularity en
dc.subject.lcsh Wavelets (Mathematics) en
dc.subject.lcsh Signal processing en
dc.subject.lcsh Shear waves--Measurement en
dc.title Wavelet analysis of bender element signals en
dc.type Journal Article en
dc.internal.availability Full text available en
dc.internal.webversions en
dc.status Peer reviewed en
dc.identifier.volume 62 en
dc.identifier.issue 3 en
dc.identifier.startpage 243 en
dc.identifier.endpage 252 en
dc.identifier.doi 10.1680/geot.9.P.052 en
dc.neeo.contributor Bonal|Julien|aut| en
dc.neeo.contributor Donohue|Shane|aut| en
dc.neeo.contributor McNally|Ciaran|aut| en
dc.description.admin Due to be published in December 2010 (Volume 60 Issue 12?). Publisher requires that "Full acknowledgement to source and publisher must be given. Please link to website:". DG 29/07/10 ke - AL 26/08/2010 en

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