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Proceedings Paper

A piezoelectric shear stress sensor
Author(s): Taeyang Kim; Aditya Saini; Jinwook Kim; Ashok Gopalarathnam; Yong Zhu; Frank L. Palmieri; Christopher J. Wohl; Xiaoning Jiang
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Paper Abstract

In this paper, a piezoelectric sensor with a floating element was developed for shear stress measurement. The piezoelectric sensor was designed to detect the pure shear stress, suppressing effects of normal stress components, by applying opposite poling vectors to the piezoelectric elements. The sensor was first calibrated in the lab by applying shear forces where it demonstrated high sensitivity to shear stress (91.3 ± 2.1 pC/Pa) due to the high piezoelectric coefficients of 0.67Pb(Mg1∕3Nb2∕3)O3-0.33PbTiO3 (PMN-33%PT, d31=-1330 pC/N). The sensor also exhibited negligible sensitivity to normal stress (less than 1.2 pC/Pa) because of the electromechanical symmetry of the device. The usable frequency range of the sensor is up to 800 Hz.

Paper Details

Date Published: 20 April 2016
PDF: 7 pages
Proc. SPIE 9803, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016, 98032S (20 April 2016); doi: 10.1117/12.2219185
Show Author Affiliations
Taeyang Kim, North Carolina State Univ. (United States)
Aditya Saini, North Carolina State Univ. (United States)
Jinwook Kim, North Carolina State Univ. (United States)
Ashok Gopalarathnam, North Carolina State Univ. (United States)
Yong Zhu, North Carolina State Univ. (United States)
Frank L. Palmieri, NASA Langley Research Ctr. (United States)
Christopher J. Wohl, NASA Langley Research Ctr. (United States)
Xiaoning Jiang, North Carolina State Univ. (United States)


Published in SPIE Proceedings Vol. 9803:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016
Jerome P. Lynch, Editor(s)

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