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Proceedings Paper

High-performance piezoelectric thin fibers and sheets as functional components for smart materials
Author(s): Andreas Schoenecker; Dieter Sporn; Winifred Watzka; Lutz Seffner; Kord Pannkoke; Peter Wierach
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Paper Abstract

Piezoceramic thin fibers and sheets of the same nominal chemical composition represent the active materials basis applied in the industrial research project 'Adaptronik' in Germany. Research activities and latest results concerning these Piezoceramic materials are discussed in the paper. Especially, progress has been attained in the PZT fiber technology. Fibers of complex chemical compositions have been prepared by a sol-gel process with diameters smaller than 20 micrometers showing a porefree microstructure with grains of 2-4 micrometers in diameter. The piezoelectric charge constant d33 was nearly doubled in comparison to the undoped PZT fibers. Ceramic sheets have been supplied by CeramTec AG. The integration of PZT-fibers and -sheets into light weight structures made of glass or carbon fiber reinforced composites, may be realized via functional modules, which are tailored as robust sensing, actuating or damping components. The effective properties of these modules are deduced to provide a reliable database in view of the design and the operation of adaptive structures. Additionally, the preparation of 1-3 composites consisting of PZT-fibers and epoxy polymer was successful. This step opens new potentials for the design of advanced ultrasonic transducers. An aspect ration of 30 of the PZT phase in the transducers represents one of the outstanding features.

Paper Details

Date Published: 12 June 2000
PDF: 6 pages
Proc. SPIE 3991, Smart Structures and Materials 2000: Industrial and Commercial Applications of Smart Structures Technologies, (12 June 2000); doi: 10.1117/12.388155
Show Author Affiliations
Andreas Schoenecker, Fraunhofer-Institut fuer Keramische Technologien und Sinterwerkstoffe (Germany)
Dieter Sporn, Fraunhofer-Institut fuer Silicatforschung (Germany)
Winifred Watzka, Fraunhofer-Institut fuer Silicatforschung (Germany)
Lutz Seffner, Fraunhofer-Institut fuer Keramische Technologien und Sinterwerkstoffe (Germany)
Kord Pannkoke, Fraunhofer-Institut fuer Fertigungstechnik und Angewandte Materialforschung (Germany)
Peter Wierach, Deutsches Zentrum fuer Luft- und Raumfahrt (Germany)


Published in SPIE Proceedings Vol. 3991:
Smart Structures and Materials 2000: Industrial and Commercial Applications of Smart Structures Technologies
Jack H. Jacobs, Editor(s)

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