标题：Experimental investigation for powder reinforcement effect on mechanical properties and natural frequency of isotropic hyper composite plate with various boundary conditions
期刊名称：International Journal of Energy and Environment
印刷版ISSN：2076-2895
电子版ISSN：2076-2909
出版年度：2015
卷号：6
期号：5
页码：499-516
出版社：International Energy and Environment Foundation (IEEF)
摘要：In this research eleven samples of composite plate materials was made with different volume fraction of the components to produce an isotropic hyper composite materials composed of three materials, epoxy resin and two reinforcements: short glass fiber and glass powder. The composite structure was studied to estimate the mechanical properties (modulus of elasticity, modulus of rigidity, and Poisson’s ratio) and the natural frequency experimentally. The experimental procedure includes the tensile test machine with the load capacity (0-540KN) and vibration test machine. The effect of volume fraction for different aspect ratios of plate were studied with six boundary conditions (Simply supported along all edges (SSSS), Simply-Free Support Edges (SSFF), Clamped-Free Support Three Edges (CFFF), Simply-Clamped Supported Edges (SSCC), Clamped-Free Supported Edges (CCFF), and Clamped Support along all edges (CCCC). The results showed that the modulus of elasticity of hyper composite of short glass fiber and glass powder reinforcement and epoxy resin material was increased with the increase of short fiber volume fraction. But the yield stress was decreased with the increase of powder volume fraction of hyper composite material. The natural frequency of isotropic hyper composite materials plate was increased with the increase of short fiber volume fraction were the volume fraction of short fiber (40%) at samples 4 and 8, maximum natural frequency had occur. It was observed that the natural frequency for aspect ratio (AR=1) was higher than that for aspect ratio (AR=1.5). The Experimental mechanical properties and natural frequency of composite plate with various volume fraction results are compare with results of other researcher and the comparison shown the good agreement between presented results and results of research, Muhannad Al-Waily [7], where, the maximum error of mechanical properties compared about (8.77%) and maximum error for natural frequency compared about (10.48%).
