The effect of adding different percentages nano-graphene oxide (NGO) into the epoxy resin on mechanical properties NGO/epoxy and maximum peeling force fiber-metal laminates (FMLs) with composite cores are investigated in this paper. Three NGO including 0.1, 0.35 0.50 weight (wt. %) used to fabricate tensile test samples NGO/epoxy. Hand lay-up method is FML specimens glass fiber reinforced plast...

This paper summarizes a series of studies on the interface of fiber reinforced polymer laminates externally bonded to concrete substrates, carried out in the Laboratory of Engineering for Maintenance Systems, Hokkaido University. Appropriate test methods and bond models for shear bond, tensile bond and cleavage bond (bond under dowel force) are shown. Finally, experimental results on shear bond...

In the present paper, the damage of fiber-reinforced composite laminates is considered with the aim to examine the change of their mechanical properties. The crucial issue for theoretical analysis is to construct constitutive relations, which take into account the development of damage, along with stress and strain. The paper is mainly focused on this problem. In order to derive an adequate des...

Carbon fiber composites are of significant interest for use in deployable space structures. Elastically folded thin laminates can be utilized as hinge mechanisms in structural systems such as solar arrays, reflectors, and instrument booms, allowing for compact packaging during launch to orbit. While the initiative to utilize composite laminates in deployable structures has increased it also has...

Abstract Fiber metal laminates (FML) are hybrid materials consisting of and composite layers. They have great mechanical fatigue properties. However, interface between layers can be critical for their final In this paper, process determination some fracture parameters in unusual FML material is described. Experimental tests following ASTM norm were conducted using Double Cantilever Beam (DCB). ...

Delaminations in composite laminates resulting from impact events may be accompanied by minimal indication of damage at the surface. As such, inspection techniques are required to ensure defects are within allowable limits. Conventional ultrasonic scanning techniques have been shown to effectively characterize the size and depth of delaminations but require physical contact with the structure. ...