Fabrication of an in-plane SU-8 cantilever with integrated strain gauge for wall shear stress measurements in fluid flows

Allen, N. J., Wood, David, Rosamond, M. C. and Sims-Williams, D. B. (2009) Fabrication of an in-plane SU-8 cantilever with integrated strain gauge for wall shear stress measurements in fluid flows. Procedia Chemistry, 1 (1). pp. 923-926. ISSN 1876-6196

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Official URL: https://doi.org/10.1016/j.proche.2009.07.230

Abstract

We present a cantilever fabricated from the polymer SU-8 for the measurement of wall shear stress in fluid flows. The pressureinduced deflection of the cantilever, measured using an calibrated and integrated nichrome strain gauge, can be related to the wall shear stress on the surface. The initial degree of curvature of the cantilever can be controlled via the exposure dose, which allows a small positive deflection to be achieved, and so minimises the intrusion into the flow. Wind tunnel testing results show a sensitivity greater than 2.5 mV/Pa, with a shear stress of 0.38 Pa and excitation of 1V.

Item Type: Article
Uncontrolled Keywords: strain gauge, SU-8, shear stress, cantilever
Subjects: H900 Others in Engineering
Department: Faculties > Engineering and Environment > Geography and Environmental Sciences
Depositing User: Becky Skoyles
Date Deposited: 17 Apr 2018 10:30
Last Modified: 17 Apr 2018 10:57
URI: http://nrl.northumbria.ac.uk/id/eprint/34001

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