By Topic

Estimation of piezoelectric material properties by coupling theory and FEM

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Lu, X.M. ; GE Med. Syst., Milwaukee, WI, USA

The performance of the finite element method (FEM) used for modeling ultrasound transducers depends on the accuracy of material properties. In the case where piezoelectric ceramic parameters are not available, the application of FEM to transducer design is very limited. A curve fitting method of estimating ceramic properties by coupling theory and FEM is described. The impedance of ceramic samples with various aspect ratios (width over thickness) were measured. The ceramic constants were adjusted in the FEM model to fit the experimental data. To reduce the number of degrees of freedom, a few of the key parameters, e.g., c11, c13, and c33, were estimated from three samples by coupling theory. The sensitivity of the parameter variation to some special features of the impedance profile (e.g., fs, fp) were studied as a guideline for tuning the parameter value. Very good agreement between experiment and FEM over a wide range of aspect ratio (0.1-29) is obtained by this method

Published in:

Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE  (Volume:2 )

Date of Conference:

7-10 Nov 1995