8 May 1995 Distributed transducer shading via spatial gradient electrodes
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A general means of shading, or spatial gain-weighting, induced-strain distributed transducers is developed using spatially-tailored electrode patterns to facilitate the modally-structured measurement and control of structural components over a wide bandwidth. The electrode patterns consist of an array of parallel rectangular `line' patches of unequal width and spacing. For panels, the pattern is 2D. A numerical optimization procedure is described for selecting the number, width, and pattern of these electrodes given a specification of desired modal coupling over a bandwidth of interest. The design method may be used to develop electrode patterns for large-area piezopolymer transducers for ASAC sensing, or for designing piezoceramic chip actuator arrays. Beam and plate examples are presented.
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Shawn Edward Burke, Shawn Edward Burke, Jeanne M. Sullivan, Jeanne M. Sullivan, } "Distributed transducer shading via spatial gradient electrodes", Proc. SPIE 2443, Smart Structures and Materials 1995: Smart Structures and Integrated Systems, (8 May 1995); doi: 10.1117/12.208308; https://doi.org/10.1117/12.208308

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