Table of Contents
Smart Materials Research
Volume 2012, Article ID 530217, 9 pages
http://dx.doi.org/10.1155/2012/530217
Research Article

Thermaly Active Structures for Shape Morphing Applications

Laboratoire de Physique et Mécanique Textiles de Mulhouse, Ecole Nationale Supérieure d’Ingénieur de Sud Alsace, 11 rue Alfred Werner, 68093 Mulhouse, France

Received 15 January 2012; Accepted 7 March 2012

Academic Editor: Sontipee Aimmanee

Copyright © 2012 Gildas L'Hostis et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

For shape morphing application, thermal activation coupling to a bimetallic strip effect can be a substitute for classical actuators, piezoelectrical or shape memory alloys. The controlled behaviour of composite material (CBCM) is a thermaly activated composite material. The thermal activation is made thanks to carbon yarns which are connected to a power supply. If the anisotropy of the structure is well organized, the desired deformation is reached when the temperature within the composite is rising. To obtain a CBCM morphing composite structure, it is necessary to design a specific structure. The aim of this work is to show that it is possible to adapt the CBCM principle in order to transform any kind of classical composite structure to an active structure. The first part of this work consists in presenting the experimental results for two examples of composite beams. The second part is about the active structure FEM modeling and the development of adapted tools for this particular design.