NDLI: An Analysis of Laminated Piezoelectric Infinite Plate for Broadband Biomedical Ultrasound Transducer Design

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Daniel, H. Cortes Sam, M. Mukdadi
Copyright Year	2007
Abstract	This work investigates the use of frequency spectrum analysis of waveguide propagation in multi-layered anisotropic piezoelectric transducers. A semi-analytical finite-element analysis (SAFE) is used to model the transducer as a piezoelectric infinite plate. Dispersion curves, group velocities and displacement frequency spectra can be obtained for any multilayered piezoelectric plate. Stress-free boundary conditions were assumed for all analyses. Results for open and closed circuit boundary conditions were analyzed. Zero-Group-Velocity (ZGV) frequencies of high-order waveguide modes were observed to provide multi-resonant displacement frequency spectrum. Comparison of numerical and experimental results shows a good agreement between peak and off-peak values of the displacement spectrum. Results showed that optimization of layered structure may provide an efficient means for generating multi-thickness (ZGV) waveguide modes, thus increasing the bandwidth of harmonic ultrasound transducers for contrast imaging.
Starting Page	337
Ending Page	340
Page Count	4
File Format	PDF
ISBN	0791842967
DOI	10.1115/IMECE2007-42289
e-ISBN	0791838129
Volume Number	Volume 2: Biomedical and Biotechnology Engineering
Conference Proceedings	ASME 2007 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2007-11-11
Publisher Place	Seattle, Washington, USA
Access Restriction	Subscribed
Subject Keyword	Biomedical ultrasonics Spectroscopy Transducers Emission spectroscopy Circuits Displacement Optimization Stress Design Ultrasonic transducers Spectra (spectroscopy) Anisotropy Piezoelectric transducers Imaging Waveguides Boundary-value problems Resonance Finite element analysis
Content Type	Text
Resource Type	Article

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