Study of delamination of fibre harness satin weave composites molded by hot pressing. The example of high strength carbon fiber and PEEK matrix

Georges Kamgaing Somoh (1) , Pongsak Nimdum (1) , Jacques Renard (1)

1 CDM - Centre des Matériaux

In recent years, the use of continuous fiber thermoplastic composites has been growing steadily, especially in the transportation industry. The purpose of the work reported here consists in developing an experimental and numerical approach to bring help in the design of laser welded TP reinforced composites. The current paper proposes a test procedure for a multi-axial mechanical characterization of the laser welded seam using the ARCAN-MINES device. This set up allows varying the loading direction while controlling the state of stress inside the joint. On the basis of experimental observations, a non-linear phenomenological material model based on a generalized Drucker-Prager criterion is used. An estimation of strains and stress inside the laser-welded seam could be computed and related to failure observations.

Mots clés: five harness satin weave; delamination criterion identifcation; acoustic emission; mesoscopic scale modeling

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Georges Kamgaing Somoh, Pongsak Nimdum, Jacques Renard. Study of delamination of fibre harness satin weave composites molded by hot pressing. The example of high strength carbon fiber and PEEK matrix. ECCM 15 - 15th European Conference on Composite Materials, Jun 2012, Venise, Italy. 8 p. ⟨hal-01109506⟩