Paper number 1098
|IDENTIFICATION OF THE DAMAGE AND FAILURE MECHANISMS OF A 3D CARBON-CARBON COMPOSITE UNDER UNIAXIAL LOADING|
C. Crestia1, S. Calloch1, A. Cosculluela2, F. Hild1 and D. Marquis1
1L.M.T. Cachan, 61 avenue du Président Wilson, F - 94235 Cachan, France
2C.E.A. Le Ripault, BP 16, F - 37260 Monts, France
|Summary||We identify the damage and failure modes of a 3D carbon-carbon composite loaded in tension along its orthotropy axis z, through the analysis of a series of experiments (e.g. Scanning Electron and Optical Microscopy). We establish that its ultimate strength is mainly due to the z-axis yarns which were not damaged (or little damaged) by specimen machining. The evaluation of the failure strength and the corresponding standard deviation are also discussed.
||Keywords|| 3D carbon-carbon composites, damage and failure mechanisms, uniaxial tensile tests, brittle materials, probabilistic approach.
Theme : Ceramic Matrix and C/C Composites ; Characterisation and Modelling
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