International Research Journal of Engineering and Technology (IRJET) Volume: 04 Issue: 03 | Mar -2017
www.irjet.net
e-ISSN: 2395 -0056 p-ISSN: 2395-0072
Design and Analysis of Composite Bolt S. B. Dongre1, B.C.Londhe2, V.D.Londhe3 1PG
Student, Design Engineering, SNDCOE and RC, Yeola, Savitribai Phule Pune University (Pune),Maharashtra, India 2Asso. Professor, Mechanical Engg. Department, SNDCOE and RC, Yeola, Savitribai Phule Pune University (Pune), Maharashtra, India 3Asst. Professor, Mechanical Engg. Department, SNDCOE and RC, Yeola, Savitribai Phule Pune University (Pune), Maharashtra, India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - Composites are combination of materials that
applications due to their excellent chemical physical and properties. They also find applications in fields where high resistance to wear, abrasion and erosion is required (mining, automobile, domestic equipment, aerospace, marine, sports etc.). These composites are light in weight and are having greater strength. So considering these fiber composites, here comes the possibility of attaching two or more sheets of fibre reinforced plate with metal sheets or itself and this could be done with the help of bolts. Fasteners are used in many fields specifically in technical fields which have high demands in chemical, electrical and thermal industries. Fasteners are also possible outcomes of glass fibre reinforced epoxy or polyester resin systems with special additives and special structure. It could be much lighter, non-conductive in electrical application and no temperature effect on such FRP composite bolts for higher temperature application. It could also be used in marine and chemical industries where the atmosphere can easily corrode metallic objects.
provide characteristics which cannot be achieved by single material system. This is achieved by cohesion of the materials made by actually combining two or more compatible materials, different in characteristics, composition and sometimes its form can also be different. The field of composite is to make material which can fulfill all criteria for manufacturing and use by making it low cost, easy availability, ecofriendly and also that it can fulfill all the criteria of its ease of manufacturing and usage. Glass Fiber has already been utilized in many useful applications such as light weight pultruded bars, an insulating material, panel boards, switchgears, etc. It has characterization of high strength to weight ratio. Against this back ground the present project work is carried out with an objective to use glass fiber, as a reinforcement material in epoxy based polymer. This fiber sheets can be layered in the epoxy matrix. Usual hand lay-up technique can be adopted for manufacturing the composite bolt.
2. LITERATURE REVIEW
Key Words: Composite, Bolt, Glass fiber, Hand lay-up, Low cost.
Turvey and Cerutti [1] worked on flexural behavior of pultruded glass fibre reinforced polymer composite with bolted joints. Here two to three pultruded glass fiber reinforced polymer laminates were bolted. It concluded that deformation increased with number of splice plate increased from two to six .Also torque increased from 3Nm to 30 Nm for the same number of increase in splice plates But at the same time the major axis transverse stiffness increased. Hence, it was seen that the transverse stiffness increases almost linearly as bolt torque increases.
1.INTRODUCTION Composite materials have been used by men since ancient age and yarn is probably one of the greatest developments of mankind which enabled him to survive any climate area and to explore the surface of the earth hence flexible fabrics made of cotton, flax and jute were excellent compared to animal skins. Age after age use of the composite materials increased continuously in the form of straw reinforced walls, composite bows and cross bows, chariots made of the combination of layers of wood, bones and horns.
Kanitkar et.al [2] investigates that the composite materials are inert to most atmospheric effects. The composite of Kevlar and glass fiber is treated with flexural test. It concluded that the content of glass fiber increases flexural strength decreases the volume fraction of glass fiber to Kevlar must be kept at 16% to 24 % range respectively to have optimum results.
In today’s modern age low cost manufacturing material with good mechanical properties to meet the requirements of growing population and which can also be renewable resource to meet the requirement easily anywhere in the world. Composite materials with glass fiber have attracted attentions of many researchers worldwide because of their low cost and ease of manufacturing. Now a days polymer composite materials has extensive use in engineering
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Rao and Reddy [3] investigation the toughness of glass fiber /epoxy composites can be increased to avoid the inter ply cracking, inter laminar delamination & fiber cracking. Here the material behaves more like a ductile
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