Fibre pullout against push-down for fibre-reinforced composites with frictional interfaces

Autor: Chun-Hway Hsueh
Rok vydání: 1990
Předmět:
Zdroj: Journal of Materials Science. 25:811-817
ISSN: 1573-4803
0022-2461
Popis: The effects of fibre pullout and fibre push-down are compared for fibre-reinforced composites when axial tensile and compressive stresses are applied, respectively, on the free surface end of the embedded fibre. Unbonded fibre-matrix interfaces with Coulomb friction and radial clamping stresses are considered in the present study. The interfacial frictional shear stress, the elastic stress transfer from the fibre to the matrix, the length of the sliding zone, and the fibre displacement in the loading direction are analysed. Specific results are calculated for SiC-fibre-reinforced AI2O3 composites. The results show substantial differences between fibre pullout and push-down due to Poisson’s effect of the fibre. Compared to fibre push-down, fibre pullout has lower interfacial shear stress, longer sliding zone length and greater fibre displacement in the loading direction.
Databáze: OpenAIRE