Fracture toughness of unidirectional graphite fibre reinforced/epoxy composite in mode ii (forward shear), using a thin tubular specimen

In this paper the biaxial Iosipescu test method has been used, employing specimens with a central precrack placed along the notch-root axis, to study the intralaminar failure properties of a unidirectional carbon/epoxy composite under mixed-mode (dominated by shear) loadings. A linear finite element analysis has been performed to determine the energy release rates and stress intensity factors for the central crack under various biaxial loading conditions. In addition, a series of simple and biaxial fracture experiments have been performed on the composite material. Numerical results indicate that the method is capable of generating a wide range of mixed-mode loading conditions at the crack tip for various loading angles and crack lengths. Using the numerical results, in conjunction with experimental data, the biaxial intralaminar failure process in the cracked Iosipescu specimens has been explained.

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Fracture toughness of unidirectional graphite fibre reinforced/epoxy composite in mode ii (forward shear), using a thin tubular specimen

Cited by 10 publications

References 20 publications

Shear Fracture Tests (Mode II) on Fiber Reinforced Plastics at Room and Cryogenic Temperatures

Shear Fracture Tests (Mode II) on Fiber Reinforced Plastics at Room and Cryogenic Temperatures

Small Specimens and New Testing Techniques for Fiber Reinforced Plastics in the Crack Opening Mode (Mode I) and in the Shear Mode (Mode II)

Application of the biaxial Iosipescu method to mixed-mode fracture of unidirectional composites

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