Determination of mechanical properties of carbon/epoxy plates by tensile stress test

Abstract

Abstract. The polymeric composite materials used in aerospace, military, medical or racing cars manufacturing end up being used in our daily life Whether we refer to the performing vehicles, subassemblies or parts for aircrafts, wind, telegraph poles, or medical prostheses they all are present in our lives and they are made of composite materials (CM). This paper presents research regarding three different composite materials, plates by carbon fiber, in epoxy matrix. Starting with materials presentation, manufacturing methodology and determination of mechanical properties at carbon fiber/epoxy were done. Vacuum bag technology to obtain the composite structure offer opportunity to get a very compact and homogeny composite structure. For the moment this technology are adequate for high performances pieces. The mechanical characteristics of plates made of composite materials reinforced presented indicates closed value like metal materials. Based on the results, a comparative study between the reinforced materials typically used to manufacture the plates of CM is carried out.

Tensile Analysis of Fabric Reinforced Materials

“…The mechanical functions of the matrix are to ensure the connection between fibers, to create the rigidity and cohesion of the material and to transmit to the reinforcement the effort exerted on the structure [4,[25][26][27][28][29][30]. Epoxy resins have superior mechanical and electrical properties compared to other resins and have good chemical and thermal resistance, but having high cross-linking sometimes suffer from brittleness and exhibit low impact properties, which can be improved by fabric reinforcement [31][32][33][34][35].…”

“…In other studies, the behavior of laminates had been analyzed under tensile conditions [26,40,45], as well as the effect of the modification of the epoxy resin, the effect of the type of fabric used in the reinforcement of the layers, but also the influence of the variation of the number of layers of each fabric (carbon, aramid, glass) as well as the influence of changing the fibers orientation in the laminates reinforcement [46][47][48].…”

Aspects Regarding the Use of 3D Printing Technology and Composite Materials for Testing and Manufacturing Vertical Axis Wind Turbines

“…In this case we chose to make a plastic prototype. In order to have good mechanical properties of the plastic prototype Glass Fiber Reinforced Polymer GFRP layers were applied on blades [21][22][23][24][25][26]. According to the thickness of the GFRP cover layers the plastic prototype was reduced by 1mm for all the section dimensions.…”

Design, Manufacturing and Test of CFRP Front Hood Concepts for a Light-Weight Vehicle

“…The mechanical properties of CFRP are studied by different authors over time. Tensile strength of CFRP presented in [ 2 , 3 , 4 ], bending and Charpy impact fracture energy [ 5 , 6 , 7 ], used different stacking sequences of the layers, indicating very good mechanical properties and lightweight of CFRP structures. The technologies to obtain the CFRP parts are very important, in order to obtain very high mechanical properties of parts and a very compact structure [ 8 ].…”