In this work, we report the potential use of novel carbon nanofibers (CNFs), dispersed during fabrication of glass fiber composites to monitor damage propagation under static loading. The use of CNFs enables a transformation of the typically non-conductive glass fiber composites into new fiber composites with appreciable electrical conductivity. The percolation limit of CNFs/epoxy nanocomposite...

Fiber-reinforced composite materials have many advantages in various engineering applications when compared to traditional such as glass, metals, ceramics and unreinforced plastics. Recently, textile-reinforced composites are increasingly used industries including aerospace, construction automotive. This study aims investigate the geometric characteristics of three-dimensional (3D) woven prefor...

Nowadays, using three dimensional fabric as a reinforcement part in the composite has been increased. Non-crimp orthogonal woven is subgroup of 3D fabrics that this study was used to fabricate preforms. The were produced by glass yarn two different fiber volume fractions. All preforms utilized produce composites with polyester and epoxy resins. To compare torsional behavior composites, torsion ...

Defects such as voids in composite materials often degrade the mechanical properties of laminates. Even if these are manufactured based on design requirements, there is a possibility instability occurring structures. In this study, several prototypes were developed changes ship conditions (glass fiber weight fraction and fabric combination type) using hand lay-up approach. The fabrication quali...

The term “glass fiber” as used here refers to any rigid, vitreous fiber, mineral or organic. “Glass” is a physically defined state of matter and not a product with a specific chemical composition. To cause health complaints it must be large enough to be trapped by the upper respiratory system. Crystalline fibers, such as the asbestos minerals and other fibrous minerals and vitreous fibers that ...

The design and fabrication of a tellurite glass multimode optical fiber for magneto-optical applications are presented and discussed. The analysis of the polarization shows that an optical beam, linearly polarized at the fiber input, changes to elliptically polarized with an ellipticity of 1∶4.5 after propagating down the fiber. However, the elliptical distribution remains unchanged with or wit...

The influence of the fiber used as reinforcement in resin matrix composite materials submitted to repeated low energy impacts is analyzed. The aramid, glass and carbon fiber composites were submitted to drop weight tests from 0.5m and from 1m. The number of impact events necessary to cause failure was recorded, and the fracture characteristics of each composite were analyzed by optical microsco...

Buckling behavior of laminated composite plates subjected to in-plane loads is an important consideration in the preliminary design of aircraft components. The sizing of many structural subcomponents of the aircraft structures is often determined by stability constraints. The objective of the current study is to understand the influence of the length-to-thickness ratio, the aspect ratio, the fi...

Abstract: It is easy for composite laminates to be damaged by relative lower velocity impact which could give rise to internal delamination that will strongly weaken the compressive strength of laminates. In order to predict the occurrence of matrix failure, the elastic-brittle behaviors of fiber-reinforced composites were modeled constitutively by an anisotropic damage model. The dynamic tensi...