The Seismic Cone Penetration Test (SCPT) is used to determine the variation with depth of the shear (and longitudinal) wave velocity at various sites in Belgium. The cross correlation technique together with a posteriori increase of the sampling frequency proves to be a reliable method to determine
Analyses of the cross-hole method for determining shear wave velocities and damping ratios
✍ Scribed by L. Hall; A. Bodare
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 581 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0267-7261
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✦ Synopsis
The cross-hole test is a common method used for determining shear wave velocities and, hence, to characterize the shear modulus. The determination of the shear wave velocities can be greatly improved by signal processing techniques. With further signal processing the damping ratios can also be determined. In this paper, the signal processing techniques to determine shear wave velocity and damping ratio is explained. The techniques are then applied to a actual cross-hole test, and also veri®ed in a ®nite element analysis.
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## Abstract ## Purpose To evaluate the reproducibility of a new multisite axial pulse wave velocity (PWV) measurement technique that makes use of 2D PCMR data and cross‐correlation analysis. ## Materials and Methods PWV was estimated with MRI in 13 healthy volunteers by a transit‐time technique