Effect of release agent on process-induced deformation in autoclave curing of laminate composites

Bruno Castanié (1, 2) , Lerdwongpaisan Arnon (1) , Philippe Olivier (1)

1 ICA - Institut Clément Ader
2 BU - Burapha University

During manufacturing, composite laminated parts undergo process-induced stresses and frequently exhibit some deformations at the end of cure. Among the different sources inducing these stresses and deformations, our work focusses upon tool/part interaction and more especially on the effects of bagging products. A series of cross-ply and angle-ply laminates were autoclave-cured on aluminium flat mould. Liquid release agent, ETFE release film and peelply were placed between the laminates bottom face and the mould. The deflection of all laminates was measured at the end of cure and numerical simulations were performed by FEM (Abaqus) for comparison. These numerical simulations propose an original modelling enabling the behaviour of releasing film and peel-ply to be taken into consideration. It reveals that crossply laminates are sensitive to presence of peel-ply layer while angle-ply laminates are less. In this case, the thermal behaviour of releasing film and peel-ply need to be investigated by thermomechanical analysis.

Mots clés: Out-of-Plane deflection; Autoclave process; Laminate composite; tool/part interaction

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

Bruno Castanié, Lerdwongpaisan Arnon, Philippe Olivier. Effect of release agent on process-induced deformation in autoclave curing of laminate composites. 20th European Conference on Composite Materials (ECCM20),, Jun 2022, Lausanne, Switzerland. 8 p. ⟨hal-03859825⟩