Experimental study of bending behaviour of reinforcements

Emmanuel de Bilbao (1) , D. Soulat (2) , G. Hivet (2) , Alain Gasser (3)

1 CEMHTI - Conditions Extrêmes et Matériaux : Haute Température et Irradiation
2 PRISME - Laboratoire Pluridisciplinaire de Recherche en Ingénierie des Systèmes, Mécanique et Energétique
3 F2ME

In composite reinforcement shaping, textile preform undergo biaxial tensile deformation, in plane shear deformation, transverse compaction and out-of-plane bending deformations. Up today, bending deformations are neglected in some simulation codes but taking into account them would give more accurate simulations of forming especially for stiff and thick textiles. Bending behaviour is speci c because the reinforcements are structural parts and out of plane properties cannot be directly deduced from in-plane properties, like continuous material. Because the standard tests are not adapted for sti ff reinforcements with non linear behaviour a new exometer using optical measurements has been developed to test such reinforcements. This new apparatus enables to carry out a set of cantilever tests with di erent histories of load.

Mots clés: Composite reinforcement; Carbon fabrics; Bending behaviour; Experimental characterization

Domaines: Matériaux et structures en mécanique [physics.class-ph]; Matériaux et structures en mécanique [physics.class-ph]

Emmanuel de Bilbao, D. Soulat, G. Hivet, Alain Gasser. Experimental study of bending behaviour of reinforcements. Experimental Mechanics, 2010, 50 (3), pp.333-351. ⟨10.1007/s11340-009-9234-9⟩. ⟨hal-00649570⟩