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http://dx.doi.org/10.5050/KSNVE.2015.25.1.013

Measurements of Radial In-plane Vibration Characteristics of Piezoelectric Disk Transducers  

Kim, Dae Jong (Soongsil University)
Oh, Se Hwan (Soongsil University)
Kim, Jin Oh (Soongsil University)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.25, no.1, 2015 , pp. 13-23 More about this Journal
Abstract
The paper experimentally deals with the radial in-plane vibration characteristics of disk-shaped piezoelectric transducers. The radial in-plane motion, which is induced due to Poisson's ratio in the piezoelectric disk polarized in the thickness direction, was measured by using an in-plane laser vibrometer, and the natural frequencies were measured by using an impedance analyzer. The experimental results have been compared with theoretical predictions obtained by simplified theoretical and finite-element analyses. It appears that the fundamental mode of a piezoelectric disk transducer is a radial mode and its radial displacement distribution from the center to the perimeter is not monotonic but shows maximum slightly apart from the perimeter. The theoretically-calculated fundamental frequencies agree well with the finite-element results for small thickness-to-diameter ratio, and they are accurate within 7 % error for the ratio up to 0.4.
Keywords
Piezoelectricity; Transducer; Vibration; Resonance; Mode shape; In-plane;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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