Study the Effect of Fibers Volume Fraction and their Orientations on the Properties of the Hybrid Composite Materials


This studying deals with the study of the effect of fiber volume fraction of thecarbon, glass and Kevlar fibers and their orientation on the properties of Hybridcomposite material. Different percentages of carbon, glass and Kevlar fibers wereused to reinforce the matrix material (unsaturated Polyester). The fibers arranged intwo methods according to the direction of the thermal flow. In the first method thefibers were parallel to the direction of the thermal flow, while the second method wasperpendicular. The thermal conductivity measured by using Leeś disk. Theexperimental and theoretical results proved that the value of the of thermalconductivity increased with increasing the fiber volume fraction of the carbon,Kevlar-49and glass and then reduced for Hybrid (H7and H8) for both arrangementparallel and perpendicular because do not hah carbon fiber. The thermal conductivityof parallel orientation had the highest value, while the carbon factor was the best. Theexperimental results of thermal conductivity for parallel arrangement indicated thatthe hybrid (H6) had maximum value 3.40 W/m.k and for perpendicular was 0.245W/m.k for hybrid (H3).