Application of the Rule of Mixtures and Halpin-Tsai Equations to Woven Fabric Reinforced Epoxy Composites

Abstract

A mathematical analysis is conducted on the experimental results of a study conducted on epoxy-based glass fiber reinforced plastics (GFRP) composites. Three different types of reinforcements were used in the form of woven fibers. Fabrics made of glass fibers, carbon fibers, and (glass-carbon) hybrid fibers were used at different volume fractions. E g Longitudinal moduls of elasticity of glass fibers. E c Longitudinal moduls of elasticity of carbon fibers. V m Volume fraction of matrix. V f Volume fraction of fibers. V c Volume fraction of carbon fibers.  1 Fracture stress of composites.  f Fracture stress of fibers.  m Fracture stress of matrix.  hL Fracture stress of hybrid interply composites.  g Fracture stress of glass fibers.  c Fracture stress of carbon fibers .

Predicting the thermal conductivity of composites based on high density polyethylene-cold plasma modified graphite by application of several analytical micromechanical models

“…On the other hand, the Nielsen model, which is derived from the model proposed by Halpin and Tsai (Abdel Ghafaar et al, 2006), conforms quite precisely to the thermal conductivity values of several polymeric compounds (Terao et al, 2010), (Weber et al, 2003). In this model, the concentration, aspect ratio, and orientation of the filling, as well as the maximum filling fraction of the particles, are considered relevant (Pietrak & Wiśniewski, 2015).…”

Exfoliation of graphite and expanded graphite by melt compounding to prepare reinforced, thermally and electrically conducting polyamide composites

“…The H-T model assumes good interfacial interactions, leading to a homogenous dispersion of discrete particles in this matrix-filler system [48,49]. As shown in Table 2, PA and the GNP and FG fillers have indeed similar surface energies, and therefore for the purposes of our analysis, we consider that this assumption is valid.…”

Influence of SLS design requirements on the material consumption and self-weight of web-core sandwich panel FRP composite footbridges

“…Multi-axial glass reinforcement fabrics, consisting of different unidirectional (UD) layers joined together, are typically used for the construction of the various laminates of the bridge. The properties of a single layer can be calculated using the formulas of Halpin-Tsai [38][39][40] and the proposed fibre volume percentage. The longitudinal (E1) and transverse stiffness (E2), the shear stiffness (G12) and the Poisson ratio in the laminate plane (ν12) can be calculated using the mechanical properties of the fibres and matrix stated in Table 1.…”