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24 August 2000 Design improvement of an embedded piezoceramic transducer in carbon/epoxy composite
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The objective was to determine design changes that reduce the risk of damage in an embedded piezoceramic transducer. Finite element analyses were performed to calculate stresses in embedded piezoceramic transducers. The model consisted of elements representing the piezoceramic, the interconnectors and the conductive adhesive, and also included the cross-ply laminate. The parameters chosen in the study were the thickness of the interconnector, the material properties, as well as the length and thickness of the conductive adhesive. The stress state in the transducer was determined for different parameter combinations to find a design with low damage risk. For the parameters studied, the lowest risk for damage initiation was obtained for a transducer with a compliant adhesive was a small thickness, and an adhesive that covered the entire piezoceramic element from edge to edge. The strain at failure in the transducer was estimated, and the position for damage initiation in the transducer was determined. The findings from the finite element analysis were supported by the experimental results.
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Christophe A. Paget, Rolf Jarlas, and Klas Levin "Design improvement of an embedded piezoceramic transducer in carbon/epoxy composite", Proc. SPIE 4073, Fifth European Conference on Smart Structures and Materials, (24 August 2000);

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