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http://dx.doi.org/10.7234/composres.2017.30.1.015

Deflection Prediction of Piezo-composite Unimorph Actuator Considering Material Property Change of Piezoelectric Single Crystal for Compression Stress Variation  

Yoon, Bum-Soo (Department of Aerospace Information Engineering, Graduate School, Konkuk Univ.)
Park, Ji-Won (Department of Aerospace Information Engineering, Graduate School, Konkuk Univ.)
Yoon, Kwang-Joon (Department of Aerospace Information Engineering, Professor, Konkuk Univ.)
Choi, Hyun-Young (Agency of Defense Development)
Publication Information
Composites Research / v.30, no.1, 2017 , pp. 15-20 More about this Journal
Abstract
In this study, LIPCA-S2 actuator with a piezoelectric single crystal layer and a carbon/epoxy layer was designed and evaluated to increase actuation performance of piezo-composite unimorph actuator. A curvature change model generated by the induced strain of a piezoelectric layer was used to predict the tip displacement of the piezo-composite unimorph cantilever. However, we found that there was big difference between the predicted and the measured tip displacement of LIPCA-S2 cantilever actuator when we used the previous linear prediction model. A new prediction model considering the change of piezoelectric strain coefficient and elastic modulus for the compression stress variation of the PMN-29PT single crystal layer was used and it was found that the difference between the predicted and the measured tip displacement reduced considerably.
Keywords
Unimorph actuator; Piezoelectric single crystal; Smart structure;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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