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Proceedings Paper

Active modification of the vibration frequencies of a polymer beam using shape memory alloy fibres
Author(s): Jacques-Eric Bidaux; Jan-Anders E. Manson; Rolf Gotthardt
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Paper Abstract

The use of shape memory alloy fiber actuators to modify the natural vibration frequencies of a composite beam is investigated. A model system composed of an epoxy matrix with prestrained shape-memory-alloy fibers is used. The natural frequencies of vibration of the beam are measured in a clamped configuration. When electrically heated, the fibers undergo a reverse martensite-to-austenite transformation. Since the geometry of the fibers during the transformation is restrained by the constraints of both the matrix and the clamping device, a recovery force is generated. This force leads to an increase in the natural vibration frequency of the whole composite beam. The transformation behavior of the composite is compared to that of the neat fiber.

Paper Details

Date Published: 26 April 1996
PDF: 6 pages
Proc. SPIE 2779, 3rd International Conference on Intelligent Materials and 3rd European Conference on Smart Structures and Materials, (26 April 1996); doi: 10.1117/12.237171
Show Author Affiliations
Jacques-Eric Bidaux, Ecole Polytechnique Federale de Lausanne (Switzerland)
Jan-Anders E. Manson, Ecole Polytechnique Federale de Lausanne (Switzerland)
Rolf Gotthardt, Ecole Polytechnique Federale de Lausanne (Switzerland)


Published in SPIE Proceedings Vol. 2779:
3rd International Conference on Intelligent Materials and 3rd European Conference on Smart Structures and Materials
Pierre Francois Gobin; Jacques Tatibouet, Editor(s)

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