modification of fibre reinforced polymer
- 1. Supervisor: Presentation by- Er. Rahul Mehra Lovedeep Menon 1270299 Batch-2012 Production Engg. SYNOPSIS PRESENTATION
- 2. Fabrication and comparison of mechanical properties of hybrid GFRP using epoxy modifiers and its optimization using conventional method TOPIC PROPOSED FOR THESIS
- 3. Objectives of the Thesis Work Fabrication of GFRP using epoxy (Araldite AY 903) as polymer adhesive and glass fibre using hand lay up method with and without epoxy modifier. Modifier used will be titanium oxide (TiO2). Tensile strength test of fabricated materials. Flexural and inter-laminar shear strength test of both the fabricated materials. SEM micrograph of both materials Conventional machining of fabricated materials
- 4. Introduction to FRP Fibre Reinforced Plastics (FRP) is the generic term for a uniquely versatile family of composites used in everything from chemical plant to luxury power boats. A structure typically consists of an unsaturated polyester (UP) resin applied to a mould in combination with reinforcement, most commonly glass fibre, to form a part that is rigid, highly durable and low in weight.
- 5. Light weight High strength-to-weight ratio (kilo-for- kilo it’s stronger than steel) Design freedom High levels of stiffness Chemical resistance Good electrical insulating properties Retention of dimensional stability across a wide range of temperatures PROPERTIES OF FRP
- 6. Composition of the FRP FRP materials are materials made of two or more constituent materials having different physical or chemical properties. When they are combined they produce a material with significantly different properties from the individual components. Individual components remain distinct within the finished product. Major constituent of frp are fibre and polymer.
- 7. Application of FRP Building and construction Marine industry Transportation Chemical plant and pipes Aeronautical and Space industry
- 8. Hand lay-up is the simplest and oldest open moulding method of the composite fabrication processes. It is a low volume, labour intensive method suited especially for large components, such as boat hulls. Glass or other reinforcing mat or woven fabric or roving is positioned manually in the open mould, and resin is poured, brushed, or sprayed over and into the glass plies. Entrapped air is removed manually with squeegees or rollers to complete the laminates structure. Room temperature curing polyesters and epoxies are the most commonly used matrix resins. Curing is initiated by a catalyst in the resin system, which hardens the fibre reinforced resin composite without external heat. For a high quality part surface, a pigmented gel coat is first applied to the mould surface HAND LAY UP METHOD
- 10. POLYMER (EPOXY) They are linear polymers produced by condensing epichlorhydrin with bis-phenol A .They are versatile resins, offering particularly excellent resistance to corrosion (solvents, alkalis and some acids), high strength/weight ratio, dimensional stability and adhesion properties. They differ from polyesters and vinyl esters in that they do not contain any volatile monomer component. Different resins are produced by varying the ratios of the components Epoxy resins are characterised by their very good electrical properties and chemical resistance, good strength and low absorption of moisture
- 11. Fibre is a natural or synthetic string used as a component of composite materials. Fibres are often used in manufacturing of other materials. Strongest engineering materials often incorporate fibre. Synthetic fibres are cheaper than the natural fibre and can be produced in large amount but natural fibre. FIBRE
- 12. Literature Review Effect of epoxy modifiers (Al2O2/SiO2/TiO2) on mechanical performance of epoxy/glass fibre hybrid composites Ramesh K. Nayak et.al (2014) •Mechanical properties like ILSS, flexural strength and flexural modulus are more in case of SiO2 modified epoxy composite compare to other fillers. • Improvement of mechanical properties increases with decrease in ceramic particle size. • Alumina modified epoxy composite increases the hardness and impact energy compare to other modifiers •Fabrication of hybrid FRP composite using epoxy modifiers (Al2O3/SiO2/TiO2) •DSC analysis • Micro-hardness test • Flexural and Inter-laminar Shear Strength test •SEM analysis Experimentation Results and Findings
- 13. Literature Review Vibration Assisted Machining of Carbon Fibre Reinforced Polymers Friedrich Bleicher et.al (2013) •Vibration assisted machining with uncoated solid carbide tools with geometrical defined blades can improve the fraying behaviour of conventional drilling and milling processes. • Drilling is mostly improved by superposing the conventional cutting conditions with a circular vibration with a frequency of 100 Hz and amplitude of 2 μm. • Faying in the milling process can mainly be reduced by vibrations in feed direction and in a circular way. • Fraying is furthermore observed in the upward milling area. Vibration assisted machining is used. vibration characteristics like form, frequency and amplitude should be analysed to find out how they affect the fraying behaviour in milling and drilling processes with uncoated solid carbide tools (VHM). Frequencies up to 300 Hz and amplitudes up to 4 μm are used for the experiments Experimentation Results and Findings
- 14. METHODOLOGY
- 15. Experimental flow chart •Glass fibre ,Epoxy( Unsaturated polyester resin) and Epoxy modifiers(SiO2,TiO2,Al2O3) Material & Tool Input Fabrication of GFRP with and without using epoxy modifiers Experimentation Prepration of specimens for mechanical testing Mechanical testing Tensile strength test Flexular strength test Impact Test Comparisons b/w the results of tests for all the specimens with conclusions
- 16. THANK YOU