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In the design of advanced composite materials containing particles, one important problem is the magnitude of stress concentration in the matrix around the reinforcing particles. In this article, the interaction of a reinforcing particle with the matrix is studied under an asymmetric...
The strengths of Al 2 O 3 –20 wt.% ZrO 2 fibres as-received, heat treated and coated with SnO 2 have been determined. The mean strength of as-received fibres was 1380 MPa for a gage length of 17 mm. The strengths of fibres heat treated at 500, 600 and 900 °C decreased by 5, 7 and 21%,...
In this study an attempt is made to investigate the influence of surface treatments such as oxidation and sizing on a high-strength carbon fibre in respect of interfacial adhesion in composite materials with a cyanate matrix. For analysing the fibre/resin interfacial adhesion the single-fibre...
The micromechanical behaviour of model Kevlar/epoxy composites made by using as-received fibres with a poly(vinyl alcohol) size was compared to that of fibres where the size was removed, and to the behaviour of model composites containing fibres modified by the introduction of amine groups which...
Real-time feedback control of resin flow through a fibrous preform during the mold-filling step of resin transfer molding offers an effective means of eliminating fill-related defects in the composite products. Process simulation models have played an indirect role in the control, either through...
A model of a fibre-reinforced composite laminate beam with sections of rectangular shape is presented and the stresses due to torsional moments are determined by an analytical solution. The technique followed is based on Sokolnikoff's approach in conjunction with the theory of anisotropic...
An analytical elastic–plastic stress analysis is carried out on metal-matrix composite beams of arbitrary orientation, supported from two ends under a transverse uniformly distributed load. The composite layer consists of stainless steel fiber and aluminum matrix. The material is assumed to be...
The main objective of the present work is to evaluate the high-temperature creep properties of a family of heat-resistant composites. For the first time, it has been possible to test hundreds of specimens of oxide-fibre/Ni-based matrix composites at high temperatures, between 1100 and 1200 °C....
The laminate free-edge effect may have a detrimental impact on the effective strength of composite laminates. The reason for this is the occurrence of high interlaminar stresses in the immediate vicinity of free edges which are not taken into acccount by the classical theory of thin laminates....
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