Seminar - AKM Mohsin - Estimating Gmax using Bender Elements

Wednesday, August 13, 2003, 1.10 - 1.50 pm
Civil Engineering Lecture Room 3

Abstract

A method for automating the measurement of shear wave velocity from triaxial tests, and hence of determining Gmax the shear modulus at very small strains is presented. The method makes use of bender elements and cross correlation between input and output signals. Provided the correct peak in the cross correlation signal is identified and the frequency is above some critical level this method provides a robust and simple approach that is relatively independent of waveform and frequency. The approach is easy to integrate into existing test control programs, and offers potential as a relatively low cost method for estimating Gmax.