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Difficulties with phase spectrum unwrapping in spectral analysis of surface waves nondestructive testing of pavements

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.1139/t92-055
AuthorSearch for: 1
Affiliation
  1. National Research Council of Canada. NRC Institute for Research in Construction
FormatText, Article
SubjectPavements; Roads
Abstract
This paper presents the results of a case study for near-surface profiling of a pavement site using the SASW method. In this study, inconsistencies were observed in the dispersion curve of the site when the usual procedure of unfolding the relative phase spectrum was followed. A correction procedure to eliminate these inconsistencies is suggested and discussed. The thickness and wave velocities of the various layers obtained with the SASW method, after applying the correction procedure, matched closely those determined from cored samples and crosshole tests.
Publication date
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  • Canadian Geotechnical Journal 29, no. 3 (June 1992): 506–511.
LanguageEnglish
Peer reviewedYes
IdentifierIRC-P-1925
NRC numberNRCC 34150
NRC-IRC-2402
NPARC number20374212
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Record identifierdcb96730-6dba-49b6-9649-e4877538bab5
Record created2012-07-23
Record modified2020-06-06
Date modified: