Fibre pullout against push-down for fibre-reinforced composites with frictional interfaces
Journal
Journal of Materials Science
Journal Volume
25
Pages
811-817
Date Issued
1990
Author(s)
Abstract
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. The interfacial frictional shear stress, elastic stress transfer from the fibre to the matrix, length of the sliding zone, and fibre displacement in the loading direction are analysed. Results are calculated for SiC fibre reinforced Al2O3 composites. The results show 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.
SDGs
Type
journal article