High temperature fatigue of carbon/polyimide 8-harness satin woven composites. Part II: Environmental effects

Federico Foti (1) , Yannick Pannier (1) , Marco Gigliotti (1)

1 ENDO - ENDOmmagement et durabilité [Institut Pprime]

This paper focuses on high temperature fatigue of Carbon/polyimide 8-harness satin woven composite materials. Traction-traction (R = 0.1) fatigue tests at 250 °C are carried out on Carbon/polyimide [45]6 8-harness satin woven composites under three different environments (air, 2 bar N2, 2 bar O2). Part II is specifically devoted to the study of the environmental effects occurring during high temperature fatigue: strain, mechanical properties and damage evolution are characterized by Digital Image Correlation (DIC) and µ-Computed Tomography (µCT) techniques. The rich characterisation of damage extent and orientation can be naturally integrated within the context of a damage-dependent behaviour models. The effect of the environment is assessed through a description of thermo-oxidation phenomena occurring at high temperatures.

Mots clés: Organic Matrix Composites (OMC); Woven composite; High temperature fatigue; Environmental effect; Thermo-oxidation

Domaines: Sciences de l'ingénieur [physics]

Federico Foti, Yannick Pannier, Marco Gigliotti. High temperature fatigue of carbon/polyimide 8-harness satin woven composites. Part II: Environmental effects. Composite Structures, 2020, 244, pp.112251 -. ⟨10.1016/j.compstruct.2020.112251⟩. ⟨hal-03490451⟩