Document Type

Thesis - University Access Only

Award Date


Degree Name

Master of Science (MS)

Department / School

Electrical Engineering

First Advisor

Lewis F. Brown


A necessary first step in the design of transducers is the characterization of the electromechanical properties of the transducer material. Piezoelectric polymers are gaining wide use as transducer materials in medical ultrasound transducers. These materials, however, are difficult to characterize with conventional techniques, because of their high internal mechanical and dielectric losses. A new curve-fitting technique was developed for the characterization of electromechanical properties of lossy piezoelectric materials. Accurate results were obtained when tested with both simulated and real sample measurement data. This new method was especially useful in characterizing Nylon-11 and Nylon-7 samples, which could not be characterized with prior techniques.

Library of Congress Subject Headings

Piezoelectric materials -- Electric properties -- Data processing
Piezoelectric materials -- Mechanical properties -- Data processing




South Dakota State University



Rights Statement

In Copyright