In-situ Measurement of Damping Ratio Spectra from the Inversion of Phase Velocities of P and S Waves in Cross-hole Seismic Testing
Linear viscoelasticity is the simplest constitutive model able to capture the capacity exhibited by geomaterials to absorb and dissipate strain energy at low-strain dynamic excitations. An important result implied by this theory is the interdependency of phase velocity dispersion and damping ratio of P- and S-waves by the Kramers-Kronig dispersion relations which are nothing but a mathematical statement of the principle of physical causality. Recently obtained exact solutions of Kramers-Kronig relations establish a direct, functional relationship between material damping ratio and the speed of propagation of seismic waves which can be profitably used in experimental measurement of low-strain dynamic properties of geomaterials. Specifically, determination of material damping ratio spectra from phase velocity measurement of P and S waves through geophysical in-situ testing seems particularly attractive. This paper aims at providing a preliminary validation for an underway work of the authors whose ultimate goal is setting up a reliable methodology for the in-situ measurement of damping ratio from standard cross-hole seismic testing.
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Availability:
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Supplemental Notes:
- Abstract reprinted with permission from Taylor and Francis.
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Corporate Authors:
CRC Press/Balkema
P.O. Box 447
2300 AK Leiden, Netherlands -
Authors:
- Lai, C G
- Ozcebe, A G
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Conference:
- 2nd International Conference on Transportation Geotechnics (ICTG)
- Location: Hokkaido , Japan
- Date: 2012-9-10 to 2012-9-12
- Publication Date: 2012
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: pp 578-582
- Monograph Title: Advances in Transportation Geotechnics II
Subject/Index Terms
- TRT Terms: Damping (Physics); Earthquake resistant design; S waves; Seismicity; Strain measurement; Testing; Viscoelasticity
- Uncontrolled Terms: Kramers-Kronig relations; P waves
- Subject Areas: Bridges and other structures; Geotechnology; Highways; I42: Soil Mechanics;
Filing Info
- Accession Number: 01473229
- Record Type: Publication
- ISBN: 9780415621359
- Files: TRIS
- Created Date: Feb 19 2013 3:03PM