摘要
Presents the study on the mechanical behaviors of composite laminates with both static and fatigue tests performed with different notched specimens and concludes with experimental results that ultimate strength and initial stiffness of various notched composite laminates is almost as same as un notched ones but the fatigue life of notched specimens is much higher than un notched ones. Compared with metals, composite materials are notch insensitive. The properties measured by using bar type specimens can not represent the real properties of composite laminates. Notches on the free edge may be helpful to the structure. The fatigue life can be predicted through theoretical models established using the residual stiffness model.
Presents the study on the mechanical behaviors of composite laminates with both static and fatigue tests performed with different notched specimens and concludes with experimental results that ultimate strength and initial stiffness of various notched composite laminates is almost as same as un notched ones but the fatigue life of notched specimens is much higher than un notched ones. Compared with metals, composite materials are notch insensitive. The properties measured by using bar type specimens can not represent the real properties of composite laminates. Notches on the free edge may be helpful to the structure. The fatigue life can be predicted through theoretical models established using the residual stiffness model.
