Real internal microstructure based key mechanism analysis on the micro-damage process of short fibre-reinforced composites.

ABSTRACT: In this work, the underlying micro-damage mechanisms of randomly oriented short fibre-reinforced composites were revealed based on real internal microstructural characteristics obtained by high-resolution (0.7 μm/pixel) synchrotron radiation X-ray computed tomography (SR-CT). The special 'pore dominant micro-damage processes' were directly observed through SR-CT three-dimensional reconstructed images, which were different from the well-known 'fibre breakage dominant failure mode'. The mechanisms of pore formation and pore evolution were further investigated on the basis of the microstructural parameters extracted from the SR-CT results. On one hand, the pore formation mechanism caused by shear stress concentration was proposed by combining the shear-lag model with the microstructural param

SUBMITTER: Hu X 

PROVIDER: S-EPMC5054434 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature