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Title: Measuring p and s wave velocities of unsaturated soils
Authors: Cheng, Zhuoyuan.
Keywords: DRNTU::Engineering::Civil engineering::Geotechnical
Issue Date: 2011
Abstract: The propagation of Primary (P) and Secondary (S) waves has garnered increasing interest due to its applicability in areas such as geo-prospecting, site investigation and the determination of geo-material properties like degree of saturation (Sr) and stiffness. In this project, the effect of frequency on P and S wave velocities and the relationship of P wave velocity with degree of saturation are investigated. This report consists of both experimental and modeling aspects.The experimental aspect attempts to understand the propagation of P and S waves. The effect of frequency on the P wave velocity (Vp) is important because while many laboratory experiments and in-situ seismic survey have been conducted to measure them, the data from different sources should strictly not be used interchangeably as different P waves may be measured at different frequencies. Experiments were conducted on sand to determine the effects of frequency on P wave velocity. It was found that there were two P waves (slow and fast) propagating through the specimen at any one time.
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:CEE Student Reports (FYP/IA/PA/PI)

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