Failure: Damage Initiation and Progression

摘要: Under service conditions, laminated composite structures develop matrix cracks, fiber-matrix debonds, fiber fractures, and delaminations. These effects, which cause permanent loss of integrity within the laminate, are termed damage, they result in stiffness strength material. As a result, load-carrying capacity life structure is reduced. When or component ceases to carry out its intended function, it said have ‘failed’. For example, microcracks observed layer constitute damage. these grow size number, coalesce into resulting reduction laminate. In order determine load carrying structure, necessary predict initiation evolution