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.

• Availability:
  • Find a library where document is available. Order URL: http://www.crcpress.com/product/isbn/9780415621359
• Supplemental Notes:
  • Abstract reprinted with permission from Taylor and Francis.
• Corporate Authors:

  CRC Press/Balkema

  P.O. Box 447
  2300 AK Leiden,   Netherlands 
• Authors:
  • Lai, C G
  • Ozcebe, A G
• 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