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Open AccessArticle

Thermally Activated Composite with Two-Way and Multi-Shape Memory Effects

Laboratory of Physics and Mechanics of Textiles de Physique (LPMT), High Alsace University (UHA), 11 rue Alfred Werner, Mulhouse F-68093, France
Department of Materials and Testing, Faculty of Engineering and Technology, National Textile University, Faisalabad 37610, Pakistan
Author to whom correspondence should be addressed.
Materials 2013, 6(9), 4031-4045;
Received: 11 July 2013 / Revised: 1 August 2013 / Accepted: 2 September 2013 / Published: 12 September 2013
(This article belongs to the Special Issue Smart Polymers and Polymeric Structures)
The use of shape memory polymer composites is growing rapidly in smart structure applications. In this work, an active asymmetric composite called “controlled behavior composite material (CBCM)” is used as shape memory polymer composite. The programming and the corresponding initial fixity of the composite structure is obtained during a bending test, by heating CBCM above thermal glass transition temperature of the used Epoxy polymer. The shape memory properties of these composites are investigated by a bending test. Three types of recoveries are conducted, two classical recovery tests: unconstrained recovery and constrained recovery, and a new test of partial recovery under load. During recovery, high recovery displacement and force are produced that enables the composite to perform strong two-way actuations along with multi-shape memory effect. The recovery force confirms full recovery with two-way actuation even under a high load. This unique property of CBCM is characterized by the recovered mechanical work. View Full-Text
Keywords: shape memory composites; functional composites; laminate; thermomechanical properties shape memory composites; functional composites; laminate; thermomechanical properties
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Basit, A.; L'Hostis, G.; Pac, M.J.; Durand, B. Thermally Activated Composite with Two-Way and Multi-Shape Memory Effects. Materials 2013, 6, 4031-4045.

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