Mixed mode fracture behaviour of a multi-directional plain weave composite - An interface delamination between a 0°/90° and a +45°/-45° weave

Currently, the advantages of composite materials, such as high strength and toughness to weight ratios, corrosion and fatigue resistance, make these materials very attractive and desirable to work with, especially in the aerostructure industry. However, composite material structures are sensitive to the presence of damage such as delamination, which is one of the most typical failure modes in laminate composites. A delamination may be induced during the manufacturing process or may be caused by inadvertent impact damage after manufacturing.