19 April 2007 Wireless piezoelectric acoustic-electric power feedthru
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There are numerous engineering applications where there is a need to transfer power and communication data thru the walls of a structure. A piezoelectric acoustic-electric power feedthru system was developed in this reported study allowing for wireless transfer of electric power through a metallic wall using elastic waves. The technology is applicable to the transfer of power for actuation, sensing and other tasks inside sealed containers and vacuum/pressure vessels. A network equivalent circuit including material damping loss was developed to analyze the performance of the devices. Experimental test devices were constructed and tested. The power transfer capability and the transfer efficiency were measured. A 100W feed though capability with 38 mm diameter device and 88% transmission efficiency were demonstrated. Both analytical and experimental results are presented and discussed in this paper.
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Xiaoqi Bao, Xiaoqi Bao, Benjamin J. Doty, Benjamin J. Doty, Stewart Sherrit, Stewart Sherrit, Mircea Badescu, Mircea Badescu, Yoseph Bar-Cohen, Yoseph Bar-Cohen, Jack Aldrich, Jack Aldrich, Zensheu Chang, Zensheu Chang, } "Wireless piezoelectric acoustic-electric power feedthru", Proc. SPIE 6529, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007, 652940 (19 April 2007); doi: 10.1117/12.716429; https://doi.org/10.1117/12.716429

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