Articles | Volume 4, issue 1
J. Sens. Sens. Syst., 4, 217–227, 2015
J. Sens. Sens. Syst., 4, 217–227, 2015

Regular research article 12 Jun 2015

Regular research article | 12 Jun 2015

Increasing the sensitivity of electrical impedance to piezoelectric material parameters with non-uniform electrical excitation

K. Kulshreshtha et al.

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Cited articles

Helnwein, P.: Some remarks on the compressed matrix representation of symmetric second-order and fourth-order tensors, Computer methods in applied mechanics and engineering, 190, 2753–2770, 2001.
IEEE Std 176-1987: IEEE Standard on Piezoelectricity, The Institute of Electrical and Electronic Engineers, Inc., New York, IEEE Std 176-1987 edn., 1988.
Kaltenbacher, B., Lahmer, T., Mohr, M., and Kaltenbacher, M.: PDE based determination of piezoelectric material tensors, Eur. J. Appl. Math., 17, 383–416,, 2006.
Kaltenbacher, M.: Advanced simulation tool for the design of sensors and actuators, Procedia Engineering, 5, 597–600, 2010.
Kaltenbacher, M., Lahmer, T., Leder, E., Kaltenbacher, B., and Lerch, R.: FEM based determination of real and complex elastic, dielectric and piezoelectric moduli in piezoceramic materials, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 55, 465–475, 2008.
Short summary
In this paper we show that for radially symmetric piezoceramic disks non-zero sensitivity of the electrical impedance to the whole material parameter set can be computed using a system of 3-ring electrodes and non-uniform electrical excitation. We formulate an optimisation problem for increasing this sensitivity. However, the system displays multiple optimal configurations for the radii of said ring electrodes and we have shown some results from optimising such configurations using simulations.