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The strengthening behavior of particle-reinforced metal–matrix composites (MMCp) is primarily attributed to the dislocation strengthening effect and the load-transfer effect. To account for these two effects in a unified way, a new hybrid approach is developed in this paper by incorporating the...
The phenomenon of thermo-mechanical coupling exists in the adiabatic process of unidirectional glass/epoxy composite (GRP) under tensile impact loading. In the present paper, the frictional work generated by matrix breakage or interfacial debonding is taken into account in order to improve the...
Three types of high-strength unidirectional composite materials were studied under longitudinal tension with superposed high hydrostatic pressure. Reinforcing fibers were T1000G carbon, S2 glass and Zylon PBO fibers; the Ciba 5052 epoxy resin was used as matrix. The composites were tested under...
Transverse cracking under tensile loading in high-temperature CFRP, carbon/BMI (bismaleimide), G40-800/5260, has been investigated experimentally. Carbon/epoxy, T800H/3900-2, composite laminates are also examined for comparison. Both material systems have toughened-interlaminar layers. Laminate...
This paper deals with the influence of the debonding damage between particles and matrix on fracture toughness and crack-tip field of particle-reinforced composites. Tensile strength and fracture toughness were examined on seven kinds of glass-particle-reinforced Nylon 66 composites in which the...
The intralaminar mode I fracture toughness values for a M55J/M18 carbon/epoxy cross-ply laminate (0°/90°) 15 (alternate 0 and 90° layers) and its constituent sub-laminates, namely the (0°) 30 and (90°) 30 laminates are theoretically evaluated on the basis of a modified crack-closure integral...
Sapphire fibres produced by the internal crystallization method were introduced into an alumina matrix. The fibres were coated with pyrolitic carbon to provide weak bonding to the matrix which is expected to enhance the fracture toughness of the material. The composite fabrication process...
A mechanical model for the delamination extension of 3-D orthogonal interlocked fabric composites has been developed by using a 2-D finite-element method to simulate experimental results from modified DCB tests. The fracture phenomena around z-fiber bundles, such as debonding from the in-plane...
Experimental results are presented for the direct effect of an acidic stress environment on the stress intensity factor of woven E-glass fibre-reinforced bisphenol–vinylester resin (E–VE), woven E-glass fibre-reinforced bisphenol–epoxy resin (E–ER) and woven C-glass fibre-reinforced...
When designing composite structures it can be valuable to know which load ratio results in the shortest fatigue life. A model is developed which predicts this. It assumes the fatigue life of specimens to be limited by delamination growth. The delamination growth follows the Paris law. A recently...
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