Analysis of pull-out and failure of unidirectional bundles in a laminated carbon/carbon composite

摘要: Abstract The carbon/carbon composites for braking applications, processed by Messier Bugatti, Division Carbone Industrie (Villeurbanne) are laminates of [0/60/−60]n stacking, needled in the through-thickness direction. unidirectional plies made adjacent meshes square cross-section which exhibit some porosity between them because CVI processing route. goal present paper is study fracture behaviour an individual mesh, and analysis interfacial properties mesh its surroundings. Tensile tests have been performed on special specimens where embedded composite bulk over a given length, can be loaded. For long length (d > 3.6 mm), broken ultimate stress 260±80 MPa. shorter debonds first with mean shear 18±8 post-debonding extraction controlled friction, starting 8±3 pull-out curves analysed modelled using Amontons–Coulomb law.