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22 July 2003 Positional impact sensing with spatially shaded polyvinylidene fluoride film
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The work in this study develops a methodology for using Polyvinylidene Fluoride (PVDF) film for gathering impact information from a structure. The method can be employed on sensors that are deployed over rigid structures or those that are placed on top of compliant/viscoelastic structures. This method utilizes spatially shaded (etched) electrodes, which allow for selective charge collection and signal processing. This means that impact information, such as impact location and impact angle, can be directly related to the time varying measured output voltage. The basic equations describing charge collection are developed followed by the development of an experimental technique that can be used for charge collection. Results were validated on an experimental test stand and show acceptable performance with error ranging between 0.025 cm (0.01 in) and 0.635 cm (0.25 in).
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Brian C. Bray and Gregory N. Washington "Positional impact sensing with spatially shaded polyvinylidene fluoride film", Proc. SPIE 5050, Smart Structures and Materials 2003: Smart Sensor Technology and Measurement Systems, (22 July 2003);

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