Pressure Mapping Using PVDF Film

Benjamin Timothy Nash

Abstract


The aim of this thesis is to evaluate the viability of implementing Polyvinylidene Fluoride (PVDF) as a pressure mapping method. This commercially available piezo-electric film is to be applied to a standard airfoil wing section and a pressure distribution be developed through wind tunnel testing. PVDF is generally coated with a conductive material on both sides. By using standard etching techniques complex electrode patterns can be installed on the film. The mechanical stain that is induced in the PVDF by the dynamic air pressure produces a proportional electrical charge that generates a signal from the sensor. It is proposed that this method will supersede the current pressure tapping technique due to an increased resolution, reduced cost and its negligible flow interaction.

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