Mechanical properties of silica, graphite and carbon fiber reinforced composites (original) (raw)
Related papers
Damping Properties of Composite Materials Reinforced by Silica, Graphite and Carbon Fiber
2018
The research aims to study the Damping properties of composite materials consists of epoxy resin with phenolic formaldehyde resin reinforced by graphite or silica particles or both, and reinforced with carbon fibers of a standard format (-90, 0, +90). The results obtained showed that the Damping properties of epoxyphenolic formaldehyde resins are enhanced after reinforced by silica, graphite and carbon fiber.
Hybrid composite Materials have extensive engineering application where strength to weight ratio, low cost and ease of fabrication are required. Hybrid composites provide combination of properties such as tensile modulus, compressive strength and impact strength which cannot be realized in composite materials. In recent times hybrid composites have been established as highly efficient, high performance structural materials and their use is increasing rapidly. Hybrid composites are usually used when a combination of properties of different types of fibers have to be achieved, or when longitudinal as well as lateral mechanical performances are required. The investigation of the novel applications of hybrid composites has been of deep interest to the researchers for many years as evident from reports. This paper presents a review of the mechanical properties of a hybrid composite [carbon fiber (37%) – E glass fiber (30%) – Graphite particulate (3%) – Epoxy resin LY 5052(30%)].
Study on Mechanical Behaviour of Carbon Fiber Reinforced Epoxy Composites
TJPRC, 2013
Fiber-reinforced polymer composites have played a dominant role for a long time in a variety of applications for their high specific strength and modulus. The fiber which serves as a reinforcement in reinforced plastics may be synthetic or natural. Past studies show that only natural fibers such as bamboo, jute, coconut etc., have been used in fiber-reinforced plastics. Although glass and other synthetic fiber reinforced plastics possess high specific strength, their fields of application are very limited because of their inherent higher cost of production. In this connection, an investigation has been carried out to make use of carbon, a synthetic fiber. The present work describes the development and characterization of a new set of synthetic fiber based polymer composites consisting of carbon as reinforcement and epoxy developed composites are characterized with respect to their mechanical characteristics. Experiments are carried out to study the effect of fiber weights on mechanical behavior of these composites. In the present work, carbon composites are developed and their mechanical properties are evaluated.
MECHANICAL PROPERTIES OF EPOXY RESIN REINFORCED WITH SILICA/GLASS FIBER
In this work the mechanical properties of polymer composites reinforced with pyrogenic silica and glass fiber are investigated. The epoxy resin used as a Matrix material is MGS LR 160 (Hexion) and the reinforcement particulate materials are silica with particle size (53-63)μm and glass fiber with particle size 6 μm*4.5mm, and having weight fraction of 2.5-20%, 5-20% and 7.5-20% respectively. Specimens of the matrix material and the four types of composite materials were subjected to tensile, bending, and hardness tests. Experimental tests results indicate that the composite materials have significantly higher modulus of elasticity than the matrix material. It was found that the enhancement in modulus of elasticity is directly proportional to the weight fraction of silica. The highest modulus of elasticity is that of the composite with 7.5-20 % silica-glass fiber, which is 182% higher than that of the matrix material. Test results also indicate that material toughness, fracture toughness and hardness of the composite materials are significantly higher than those of the matrix material. The enhancements in these properties are found to be directly proportional to the weight fraction of silica.
2015
This Paper complies the study of effects of various filler materials on Mechanical Properties of Carbon-Epoxy Composite. The paper gives the diversified description of the behavior of the Carbon-Epoxy Composite, under different loadings and conditions. The Carbon-Epoxy Composite was fabricated using various fillers such as, Coremat, Aerosil and Granite. The Composition of the Carbon-Epoxy Composite consists of 50% Carbon Fiber, 40% Resin and 10% fillers by weight. Three different types of Carbon-Epoxy Composite specimen were fabricated using three different Fillers, as mentioned above. The Method Adopted to fabricate the Carbon-Epoxy Composite is conventional Hand Lay-up technique. Furthermore, the Carbon-Epoxy Composite specimen was subjected to various Test Conditions, namely Tensile Test, Impact Test and Water Absorption Test and the behavior of the same is recorded and described in this paper.
Enhanced Mechanical Properties of Epoxy / Graphite Composites
2018
Particulate polymer composites comprise of polymer as matrix and variety of micro or nano fillers. The main objective behind inclusion of filler material in polymer matrix is to improve the various properties as well as make the composite economically viable. In the present work, graphite (size less than 75 μm) is taken as micro filler for preparation of epoxy composites. Experimental study has been carried out to study the effect of addition of fly ash at different weight percentage i.e 3wt%, 6wt%, 9wt% and 12wt% on the mechanical properties of epoxy composites. Mechanical properties such as Impact strength, Flexural strength, Flexural modulus and Fracture toughness are studied as per ASTM standards. Specimens are prepared using open mould casting. The results showsthe enhancement in Impact strength, fracture toughness, Flexural strength and Flexural modulus is by 100% and 50.96%, 73.5% and 19% at 12wt% of graphite in epoxy composites as compared to pure Epoxy. KEYWORDSGraphite, Ep...
Mechanical and Microstructural Characteristics of the Glass -Carbon Fiberous Composite Materials
Composites are potential materials due to their properties such as stiffness and high specific strength which leads to potential application in the area of aerospace, marine and automobile engineering etc. Though these materials have attractive properties, during the processing and service, the composite materials can have some sort of defects like matrix cracking, fiber breakage, fiber pull out, delamination and debonding. Recently, hybrid composite is being investigated throughout the globe as it has enhanced properties than their mother composites which are relatively cost effective method. The mechanical properties such as bending fatigue stiffness and strength degradation have been reported in carbon-glass/epoxy hybrid laminates. The fiber reinforced polymer composites containing glass fibers and carbon fibers are fabricated by using hand layup method. The role of exact knowledge of mechanical and microstructure properties of Glass fiber reinforced polymer composite (G-FRP), Carbon fiber reinforced polymer composite (C-FRP), glass-carbon, carbon-glass is analyzed. The test specimens have been prepared according to ASTM standard size to carry out the tensile and flexural tests. The mechanical properties which include tensile, flexural, impact, shear and hardness strength of diverse composites have been evaluated and compared. The CFRP are best suited for flexural and tensile test and for impact test, shear test and hardness test hybrid composite is found to be higher than others. Microscopic analyses of specimen have been done by means of SEM image and the corresponding failure mechanisms also have been studied. Then impact and DMA tests are also carried out for the above specimens. From the DMA test results it was found that the storage modulus and loss factor of GFRP specimen are high. A composite material system is composed of two or more physically distinct phrases whose combination produces sophisticated engineering materials including metals, ceramics, and polymers.The composite materials have more elastic strain energy, storage capacity, high strength to weight ratio compared with other materials. With the increased application of glass and carbon fiber composite in dynamic situation, knowledge of impact strength of this material is becoming important. As such considerable amount of research as devoted to study the impact strength of this of the composite materials under dynamic load using experimental methods. Composites are more appealing materials because of their properties like stiffness and high strength to weight ratio compared with the conventional materials. Composite materials have
IRJET-Study of Effect of Various Fillers on Mechanical Properties of Carbon-Epoxy Composites
The Objective of this dissertation work was to study the effect of various filler materials on Mechanical Properties of Carbon-Epoxy Composites. For this purpose, 3 filler materials were selected based on their end applications. The fillers used are - Granite Powder, Aerosil (Fumed Silica) and Coremat. The composition selected was 40% Epoxy + 50% Carbon fiber + 10% Fillers. The fabrication method used was conventional hand lay-up technique. The mechanical tests carried out were Tensile Test, Hardness Number and 3-P Bending Test. The Tensile Test gave the results for Tensile Strength, Tensile Modulus & Strain. The Bending Test gave results for Flexural Strength, Flexural modulus & Interlaminar shear strength. The Shore-D hardness test gave the hardness Number. The results indicated that Aerosil Filled Composites showed best results for Tensile strength whereas hardness and Bending results were good for Coremat filled ones. Also Water ageing test was conducted to determine the water absorption rate. The specimens were kept in sea water and ambient atmospheric conditions. The specimens were tested during three intervals of time i.e. 5, 10 & 15 days. The final weight was noted and the calculations were made. The results concluded that coremat filled composites showed negligible absorption rate. Micro-structure Analysis was carried out before and after ageing.
Mechanical Properties of Hybrid Carbon Fiber Reinforced Polyethylene and Epoxy Composites
2020
In this work, a hybrid polyethylene/epoxy combination matrix is reinforced with carbon fiber fabric. The objective is to develop a composite material with better tensile and impact properties. Three ratios of high molecular weight polyethylene powder were used as an additive to the epoxy matrix system. These composite materials were manufactured using hand-layup and vacuum bagging technique. The study carried out here is to find the effect of polyethylene weight fraction on tensile and impact properties of the carbon fabric reinforced epoxy composite material. The results show the tensile strength has been improved by the lowest used ratio of polyethylene additive while, all the hybrid composites exhibit higher tensile ductility. On the other hand, the Izod impact strength shows degradation in impact properties for the hybrid composites. Several suggestions are made about ways to improve the behavior of such materials.
DJES
Phenolic formaldehyde (resole) resin was used at a different weight (10%, 20%, 30%, 40%), with epoxy resins at varying percentages (90%, 80%, 70%, 60%) at 20 C °. In order to study the mechanical properties (which including: Tensile strength, hardness and shock resistance), for the purpose of analysis and comparison with the mechanical properties of alloys, and the selected part for the purpose of replacing the alloy with the composite materials to reduce weight and improve mechanical properties. The results indicate improved properties with increased epoxy resins due to increased bonding between components.