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

Allen, N.J.; Wood, D.; Rosamond, M.C.; Sims-Williams, D.B.

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


Authors

N.J. Allen

D. Wood

M.C. Rosamond



Contributors

J. Brugger
Editor

D. Briand
Editor

Abstract

We present a cantilever fabricated from the polymer SU-8 for the measurement of wall shear stress in fluid flows. The pressure induced deflection of the cantilever, measured using a 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 1 V.

Citation

Allen, N., Wood, D., Rosamond, M., & Sims-Williams, D. (2009). Fabrication of an in-plane SU-8 cantilever with integrated strain gauge for wall shear stress measurements in fluid flows. In J. Brugger, & D. Briand (Eds.), Proceedings of the Eurosensors XXIII conference (923-926). https://doi.org/10.1016/j.proche.2009.07.230

Conference Name Eurosensors XXIII conference
Conference Location Lausanne, Switzerland
Online Publication Date Sep 4, 2009
Publication Date Sep 4, 2009
Deposit Date Oct 1, 2010
Publicly Available Date Apr 30, 2015
Volume 1
Pages 923-926
Series Title Procedia chemistry
Series Number 1
Series ISSN 1876-6196
Book Title Proceedings of the Eurosensors XXIII conference.
DOI https://doi.org/10.1016/j.proche.2009.07.230
Keywords Strain gauge, SU-8, Shear stress, Cantilever.
Public URL https://durham-repository.worktribe.com/output/1159721

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