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http://dx.doi.org/10.5050/KSNVN.2006.16.1.089

Variation in the Vibration Characteristics of a Piezoelectric Transducer due to Pre-pressure  

Kim, Dae-Seung (숭실대학교 대학원 기계공학과)
Kim, Jin-Oh (숭실대학교 공과대학 기계공학과)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.16, no.1, 2006 , pp. 89-100 More about this Journal
Abstract
This paper presents an analytical approach to describe the variation in the vibration characteristics such as the natural frequency of a piezoelectric transducer under static pre-pressure. The transducer considered in this paper is a bolt-clamped Langevin-type transducer, which consists of a couple of piezoelectric discs, a couple of metal blocks for added mass effect, and a bolt to tighten them. A new analysis model for the transducer has been developed by taking into account the contact area between the piezoelectric ceramic disc and the metal block. The variation of the resonance frequency due to the pre-pressure has been calculated and compared with measured results reported earlier.
Keywords
Piezoelectric Transducer; Pre-pressure; Resonance Frequency; Characteristic Equation; Impedance;
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