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The feasibility of using buffer strips for improving the notched strength and crack arrest capability with several combinations of main panel and buffer strip materials is investigated. The results show that a proper selection of main panel and buffer strip material ensures crack arrest and...
Unidirectional composites were fabricated from twisted spun yarn commingled of carbon fiber and Nylon 6 fiber by compression molding. Longitudinal bending strength was saturated with a rather lower pressure and shorter period of compression. A clear fiber bundles- boundaries pattern is observed....
Tensile behaviour of quasi-isotropic [0/μ45/90]s liquid crystalline fiber reinforced composites were discussed. The fracture modes were observed by microscope and scanning electron microscope. As the result, initial fracture did not originate in 90° lamina, but in 45° lamina.
Transverse bending tests were carried out for unidirectional composites fabricated from twisted spun yarn commingled of carbon fiber and Nylon 6 fiber by compression molding. Transverse bending strength was explained in conjunction with their impregnation behaviors.
APC-2 laminates [μ45]2s are submitted to loading-unloading tensile tests for measuring stiffness and taking X-ray radiographs at different stress levels. Extensive plastic shear strains and large permanent angle variations between fibres are observed. An important shear modulus drop is measured,...
Fracture tests to measure delamination resistance are among the most widely used non-standardized tests currently performed on composite materials. Unfortunately it has been shown that the values obtained from such tests can vary by a factor of two according to specimen geometry and data...
Attention has been focused recently on the interphase in continuous, unidirectional fiber-reinforced composites. In this study, the interphase region is modeled as a non-homogeneous, orthotropic material with continuously varying properties. A previously proposed solution method is used to...
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