Development and Performance Evaluation of Disk-Type Piezoelectric Transducer for Measurement of Shear and Compression Wave Velocities in Soil |
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| Authors: | Muhammad Irfan Taro Uchimura |
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| Institution: | 1. Department of Civil Engineering, University of Engineering &2. Technology Lahore, Lahore, Pakistan;3. Department of Civil Engineering, The University of Tokyo, Tokyo, Japan |
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| Abstract: | A piezoelectric transducer capable of measuring both shear and compression wave velocities in soil simultaneously in triaxial testing conditions is presented. Performance evaluation of disk transducer system showed that the use of low-noise coaxial cables, proper grounding, and high resolution wave recorder can significantly enhance signal quality and eliminates crosstalk deterioration. Distortions due to near-field effects were found to diminish by increasing input frequency and by using sinusoidal input waveform, compared to square input. Disk-type piezoelectric transducers show significant future potential for laboratory determination of shear, and compression modulus of soil because of their robustness and noninvasive nature. |
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| Keywords: | Shear Wave Velocity Compression Wave Velocity Piezoelectric Triaxial Test Shear Modulus Compression Modulus |
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