Abstract
Fracture toughness of material has a great importance in the determination of the resistance of the material to crack propagation. The starting point in fracture mechanics analysis is to consider a crack of a certain size located in a component or specimen. The pure tensile specimen e.g., SENT (single edge notch tension), have the lowest constraint, while specimens dominated by bending have the highest constraint. In this paper, the woven carbon/epoxy composite material with eight lamina was produced which has a volume fraction of carbon fiber of approximately 60% mechanical properties of this woven composite have been calculated. The fracture toughness value was measured by using the crack mouth opening displacement (CMOD) method experimentally. An experimental investigation has been carried out on the fracture toughness of woven carbon/epoxy composite at room temperature using SENT specimens. The finite element study was carried out by using a 2-D model to obtain the fracture toughness value of woven carbon/epoxy composite numerically with the ABAQUS finite element software package. The result obtained via the CMOD method has been compared with the finite element method (FEM) results. Comparison showed good agreement.
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