Paper number 960

TEMPERATURE EFFECT ON THE DAMAGE DEVELOPMENT OF A CFRP LAMINATE UNDER CYCLIC LOADING.

KHEMIRI Nizar1, MICHEL Laurent2, and RAMAHEFARISON Epiphane1.

1Mechanical Engineering Department, INSA, Complexe scientifique de Rangueil 31077 Toulouse cedex, France.
2Mechanical Engineering Department, ENSICA, 1 Place Emile Blouin, 31056
Toulouse cedex 5, France.

Summary The objective of the present paper is to evaluate experimentally the effect of temperature on fatigue damage of polymeric composite materials (T300/914). Tension-tension fatigue tests were conducted on [0/(45/903]S laminates undergoing different temperatures : 24C, 70C and 120C. Only transverse ply matrix cracking and delamination have been considered in this study. The effect of damage on the stiffness loss has also been measured. Finite element simulation was carried out to study the transverse matrix cracking effect on the stresses distribution. Residual stresses which depend on thermoelastic properties of the materials, have been taken into account. This numerical model gives an approach to the understanding of the CDS.
Keywords temperature effect, matrix cracking, delamination, stiffness loss, fatigue.

Theme : Mechanical and Physical Properties ; Fatigue

[ HOME ]  [ BACK ]