A novel, two-scale computational model has been developed to predict the progressive damage and failure responses of fiber-reinforced composite laminates using the material properties at the constituent (fiber and matrix) level. These properties were measured from coupon level tests on a unidirectional lamina of the same material system. In the proposed computational scheme, the macroscale fini...

The large temperature sensitivity of the Sagnac loop interferometer based on the birefringent holey fiber filled with metal indium was experimentally demonstrated. The temperature sensitivities of the wavelength shift of the interferometer and the birefringence the fiber with indium were measured to be -6.3 nm/K and -3.3x10(-6) /K, respectively. The large temperature sensitivity of the fiber wa...

Laboratory specimens used to assess the interfacial fracture toughness of layered materials can be classified as either conventional or unconventional. We call a specimen cut from unidirectional composite laminate an adhesive joint between two identical adherents. Assessing using is common practice guided by international test standards. In contrast, we term unconventional resulting from, for i...

A three-dimensional finite element model of the joint has been developed. The model has been used to predict the stress field of the laminate in the joint area, assuming homogeneity and linear behavior of the material. The modeled geometry is a T-bolt that joins a coupon of glass fiber–epoxy and a block of steel. The results obtained from the model have been verified experimentally using both e...

Abstract Composite materials are more and widely used in aircraft structural design, impact damage is the most serious defect/damage form of aviation composite structures service. Therefore, it great significance to study resistance composites with different forms for design. In this article, reinforced fiber/resin laminates unidirectional carbon fiber prepreg (UIN23100), woven fabric (W-3021FF...