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Piezoelectric Skin-Friction-Force Transducer

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1 Author(s)
Kahng, S.K. ; School of Electrical Engineering, College of Engineering, University of Oklahoma, Norman, Oklahoma

A two component piezoelectric skin-friction force transducer has been developed for a hypersonic flow tunnel which has a run time of approximately 70 milliseconds. Skin-friction forces acting on a sensing diaphragm are transferred to a transducer element which is constructed of lead zirconate titanate composition ceramic beams. The transducer converts a force into two charge signals which correspond to orthogonal components of the force parallel to the skin-friction force sensing diaphragm. The diameter of the sensing element is 0.940 inch and the overall transducer dimensions are 1 inch diameter and 0.625 inch high.

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Industrial Electronics and Control Instrumentation, IEEE Transactions on  (Volume:IECI-17 ,  Issue: 2 )