Portal de Periódicos da CAPES

A new active composite

2009; IOP Publishing; Volume: 18; Issue: 2 Linguagem: Inglês

10.1088/0964-1726/18/2/025020

1361-665X

Hervé Drobez, Gildas L’Hostis, Karine Gautier, F. Laurent, Bernard Durand,

Icing and De-icing Technologies

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