Abstract
CETIM CERMAT and the LPMT have been developing a new kind of active structureover the past few years: CBCM (controlled behavior composite material). TheCBCM process consists in generating an internal source of heating within thecomposite structure and then in using the thermomechanical properties of thevarious components in order to deform the material. Carbon yarns are used as theinternal heating source: being connected to a power supply, they are conductive andprovide heating by the Joule effect. In this work, various aspects of the CBCM arestudied by means of model plates. First, the plates and their constitutive layers aredescribed. Second, the bending properties of the CBCM are presented. Third,it is shown how the structure can become active. Finally, in order to illustratethe capacities of this new active composite, a prototype of an aerodynamic flapintegrating CBCM is developed. Experimental and numerical results are compared.
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