دراسة تاثير الحرارة على الخصائص الميكانيكية والحرارية لمادة متراكبة هجينية

The study of the effect of temperature on the Mechanical and Thermal properties for Hybrid Ⅳlaterial。 Abstract: Astudy was made on(Epoxy― Fibers)compOSite,using Epoxy tvpe(Epikote 828)as amatrix,while glass flbers(type E)and kevlar -49 , a1l of thenl in the form of WOven rovings and poly propylene rlbers in the form chopped strand mats. ⅣIechanical behavior (Bending , Flexural Strenght , Impact Strenght and Hardness)waS Studied in defferent environments to know the effect of tempereture on these properties.The thermal conductivity test was carried on also.All results Were discussed.