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Frequency Signature of Damage Localization

  • E. Pasternak
  • A. V. DyskinEmail author
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG, volume 11)

Abstract

Spectral effect of temporal localization of acoustic events associated with their spatial localization is investigated. It is shown the temporal localization produces blue shift in the frequency spectrum as compared to non-localized (random) generation of acoustic events. This opens a possibility to detect localization on the basis of a single channel recording without the need of determining the pulse locations. This can be done by analyzing the difference between the spectra of registered acoustic pulses and their randomized series.

Keywords

Temporal localisation Arrival times Energy spectrum Frequency shift Blue shift indicator 

Notes

Acknowledgments

This research is supported by ARC Discovery Grants DP0988449, DP0773839 and WA Geothermal Centre of Excellence. We grateful to Chris Hellsten for discussions and suggestions.

References

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  2. D.A. Lockner, J.D. Byerlee, V. Kuksenko, A. Ponomarev, A. Sidorin, Observations of quasistatic fault growth from acoustic emissions, in Fault Mechanics and Transport Properties of Rocks, ed. by B. Evans, T.-F. Wong (Elsevier, London, 1992), pp. 3–31CrossRefGoogle Scholar
  3. J.W. Rudnicki, J.R. Rice, Conditions for the localization of deformation in pressure-sensitive dilatant materials. J. Mech. Phys. Solids 23, 371–394 (1975)Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.School of Mechanical EngineeringUniversity of Western AustraliaPerthAustralia
  2. 2.School of Civil and Resource EngineeringUniversity of Western AustraliaPerthAustralia

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