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Proceedings Paper

Fiber composite materials with integrated piezoceramic plates
Author(s): Volker Krajenski; Gerhard Mook; Peter Wierach; Holger Hanselka
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Paper Abstract

In contrast to conventional lightweight material like aluminum or titanium, fiber composites offer the possibility to integrate functional elements directly into the material. Thus, multifunctional materials are developed which have the ability to serve more than the load-carrying function. As there is extensive work on the field of integration of thin piezoceramic platse and foils into carbon fiber reinforced polymeres, this will be focused on in this paper. First, the design of an active carbon fiber composite with integrated piezoceramic is shown. Different fiber layups and connecting methods to supply the piezoceramic are discussed. A sophisticated processing technology for active composite materials, the so-called DP-RTM (Differential Pressure - Resin Transfer Moulding), is presented. Various damage mechanisms may reduce or even destroy the sensing and actuaing capabilities of the piezoceramic material. Therefore the capability of high resolution non-destructive methods to evaluate manufacturing defects as well as defects resulting from mechanical overload is presented. Finally two applications are discussed in more detail to demonstrate the potential of the active composite material. Representing static applications an active composite plate is shown which has an infinite bending stiffness up to a certain load. A second active composite plate is used for active noise control.

Paper Details

Date Published: 24 August 2000
PDF: 10 pages
Proc. SPIE 4073, Fifth European Conference on Smart Structures and Materials, (24 August 2000); doi: 10.1117/12.396417
Show Author Affiliations
Volker Krajenski, Univ. of Magdeburg (Germany)
Gerhard Mook, Univ. of Magdeburg (Germany)
Peter Wierach, German Aerospace Ctr. (Germany)
Holger Hanselka, Univ. of Magdeburg (Germany)


Published in SPIE Proceedings Vol. 4073:
Fifth European Conference on Smart Structures and Materials
Pierre Francois Gobin; Clifford M. Friend, Editor(s)

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