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3037TENSILE HARDNESS IMPACT PROPERTIES ANALYSIS OF POLYMER
MATRIX COMPOSITES AND CORROSION BEHAVIOR ANALYSIS OF
POLYMER COMPOSITE
K. Raju1, Dr.S.Dhanalaban2,V. Logesh Kanna3, A. Dhileepan4, E. Sai Eswaran5, M. Subash6, G. Kumaresan7
1
Assistant Professor, Mechanical Engg., M. Kumarasamy College of Engineering, India. Email: [email protected]
2
Professor, Mechanical Engg., M. Kumarasamy College of Engineering, India.
3,4,5,6,7
Student,Mechanical Engg.,M.Kumarasamy College of Engineering, India.
ABSTRACT
Presently a-days, the regular sisal pineapple banana from sustainable common assets supply the possibility to go about as a building up material for substance compound composites different to the work of glass, carbon and wood. Among various characteristic filaments, sisal or banana is most commonly utilized fiber on account of its advantages like direct comfort, thickness, ease and palatable mechanical properties. For a stuff, its mechanical conduct relies upon a few variables like fiber content, direction, types, length and so on makes an endeavor are made during this investigation work to check the aftereffect of stacking on the physical and mechanical conduct of sisal/banana/pineapple reinforced epoxy fundamentally based crossover composites. We have two sorts of examples which has distinctive proportion of fibre from each other.
Keywords: Fibre, Corrosion Test, Mechanical Properties.
I. INTRODUCTION
Polymers and metals have discovered applications as network materials inside the arranging of primary composites, with excellent achievement. These materials stay flexible until disappointment occurs and show limited disappointment strain, when stacked in pressure and pressure. Composites can't be made of constituents with dissimilar direct expansion qualities. option of manufacture strategy relies upon network properties and consequently the aftereffect of lattice on properties of fortifications. it's ideal to supply low worth, prime quality, property and natural well-disposed materials. It's been found from the investigated study that the lower mechanical properties and helpless similarity between synthetic compound grid and strands. Composite materials are one among the first preferred answers for the current disadvantage inside the field. By consolidating the more grounded properties of antiquated materials and taking out the inconveniences they bear, fiber mats of different directions territory unit created, composite materials innovation is giving bargaining arrangements and options in contrast to a few designing fields issues brought into the world from material restrictions like critical weight, underlying strength, and warm opposition territory unit being tackled by the material other options, and a lot of a ton of choices region unit being acquainted with immediately use designing applications.
Characteristic filaments like sisal, banana, pineapple, fiber and jute is utilized with achievement in composite components to comprehend decrease of weight and worth. These filaments region unit inexhaustible, non-grating to strategy instrumentation, and might be burned at the tip of their life cycle for energy recuperation as they have a legitimate arrangement of hot worth. they're conjointly horribly protected all through dealing with, cycle and use. The particular properties of fiber reinforced polymers territory unit improved ductile and bowing strength, bigger versatility and bigger protection from breaking and accordingly improved effect strength and durability. By unique the heading of the strands inside the natural compound, the texture properties is custom-made to the outer masses. To upgrade the advancement various changed layers (laminae) is wont to kind a cover. By this association, the helpless capacities and disadvantages of the individual components vanish. By this association, the helpless abilities and drawbacks of the individual components vanish. for instance, composites blend a high solidness and strength in with an espresso weight and their consumption obstruction is normally sublime.
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3038 Composites have worked their far among wood and metal on account of their extraordinary worth presentation size connection all through a period. a vigorous methodology in rising this size connection is to limit the means required from stuff to complete item.II. EXPERIMENTAL METHOD
Materials
Natural fibre of sisal pineapple banana and epoxy resin were obtained in marketplaces of the city of Coimbatore.
Banana Fibre
The Banana fiber is a recovered cellulose fiber, which is created from banana mash, handled from banana culms. It would seem that cotton in its un-turned structure. Numerous banana fiber makers apply broad dying cycles to transform the shade of banana fiber into white. In any case, the organizations occupied with creating natural banana texture leave the banana fiber unbleached. Banana fiber is more slender when contrasted with hair and has a round and smooth surface which makes it scraped spot confirmation.
Pineapple Fiber
The Pineapple fiber it is gather from the pineapple natural product. The plant leaves are isolated from the storage compartment and the strands are physically separated from the leaves by a technique for scratching known as decortitation. The heap of cellulosic strands are then washed at a close by stream and hung to dry. After waxing the strands to remember any entrapments and whipping to deliver any last plant tissues.The leaf strands are then tied individually to create a nonstop fibers yarn in a comparative customary technique as the abaca fiber. A kilo leafs can give up to 15-18 bits of white smooth radiant fiber around 60 cm long each. This a hand work – escalated moderate cycle that can regularly include 30 individuals altogether.
During this interaction the fiber is part into two characteristics: bastos which is solid and coarse for making family things like carpets and liniwan which is extremely fine so reasonable for waving material.
Now that it is prepared for waving it is up to the gifted craftsman to twist and weft the loom as the plain texture.
Sisal Fiber
The sisal fiber is traditionally utilized for the rope and twine and has numerous different uses including the paper dress and footwear and caps and packs and covers. It is additionally utilized as fiber support for composite fiber and glass elastic and concrete items. It is gotten from the agave sisalane a local of mexico. The solid plants develops well throughout the entire year in sweltering environment conditions and dry areas which are regularly inadmissible for crops. sisal can be developed in most soil types anticipate earth and has low tolerance to damp and saline soil conditions.
Epoxy Resin
Epoxy alludes to any of the fundamental segments or relieved and results of epoxy sap just as an informal name for the epoxide useful group. Epoxy sap otherwise called poly epoxides are a class of receptive polymers and polymer which contained epoxide bunch. It could be reactivated either with themselves through synergist homo polymerization or with wide scope of co reactants including the poly practical amines and acids and alcohols. These co reactants are regularly referred to as hardeners or curatives and the crossconnecting response is normally alluded to as curing. Reaction of poly epoxide with themselves or with polyfunctional hardeners frames a thermosetting polymer frequently with great mechanical properties and high warm and synthetic obstruction. epoxy has a wide scope of uses including metal covering utilizing electronic segments.
III. FABRICATION PROCESS
The sisal/banana/pineapple is gathered from neighborhood sources and sisal/banana/pineapple and Epoxy sap is bought from market is utilized for creation of composite. The low temperature relieving epoxy tar and comparing hardener are blended in a proportion of 10:1 by weight as suggested. A form is utilized for projecting the composite pieces.
The short sisal/banana/pineapple is blended in with epoxy tar by the straightforward mechanical mixing. The composites are set up with three diverse polymer pineapple/sisal/banana stacking and four distinct lengths continuing to utilize straightforward hand lay-up procedure. The combination is filled different molds affirming
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3039 to the prerequisites of different testing conditions and portrayal principles. The nitty gritty organization and assignment of the composites are introduced. The cast of every composite is safeguarded under a heap of around 25 kg for a day and a half before it eliminated from the shape hole. At that point this cast is post restored noticeable all around for an additional 36 hours subsequent to eliminating out of the shape. Examples of suitable measurement are cut for physical and mechanical tests.The essential assembling techniques used to deliver composites include: • Manual Lay-Up
• Automated Lay-Up • Spray-Up
• Filament Winding • Pultrusion
• Resin Transfer Molding
Manual lay-up entails slicing the support material to size using a variety of hand and force-driven tools. These cut parts are then impregnated with wet grid material and laid over a shape surface that has been coated with a distribution professional, and then a pitch gel-coat is applied on a regular basis. After that, the impregnated support material is moved by hand to ensure uniform distribution and to get rid of any trapped air. More support material is added before the necessary component thickness is reached. Pre impregnated support content, known as 'prepreg,' can also be used for manual lay-up.
The use of prepreg material eliminates the need for individual components. Treatment of the support and sap will increase component quality by providing more consistent support and gum substance control. However, to avoid premature restoring, prepreg should be kept refrigerated before use. The profitability of manual lay-up can be increased by automating it with CNC machines. Both prepreg tape laying and prepreg fibre laying are done on these devices. Specifically in the aviation industry. While the size of the work that can be tape-rolled is virtually unlimited, the form must be generally level to ensure that each progressive column is free of gaps, covers, and wrinkles. Multi-pivot fibre position machines that are programmed overcome this limitation by distributing a variety of small individual tapes of content. When they are laid on the type surface, they are collimated. Pitch is sprayed onto a prepared form surface with a specially designed splash arm in splash up. At the same time as it showers the gum, this weapon hacks endless help into acceptable lengths.
The composite parts should be relieved after they have been laid up. Relieving may take place at room temperature, with the assistance of warmed air. You may also use broilers, warmed platen presses, and autoclaves. Restoring times will range from a single hour to a half-day or longer. Vacuum sack forming refines the relieving process even further. A non-following plastic film, typically polyester, is attached here all the way around the lay-up material and the form plate Under the bag, a vacuum is gradually created, forcing it against the lay-up. This pulls trapped air and a lot of tar out. When it comes to delivering large, complex moulded parts, vacuum pack forming is a compelling option. Wrapping a close fibre tow or band of tows of sap impregnated fibre around a mandrel of the form to be delivered is referred to as fibre twisting.
When the mandrel is removed, the result is a form that is hollow. Fiber winding is used to make line, tubing, pressure vessels, tanks, and other similar-shaped objects. Fiber winding is usually done in either a circle or a helical pattern. Every mandrel turn propels the machine forward One band width of material-conveyance-supporting carriage, butting the edge of one band near to the edge of the previous band. Material is saved in a helical direction one way in helical winding, then pivots on end and returns in a helical direction the other way. Mandrels for winding fibres may be metallic or non-metallic, and they can be used for one or more purposes. Pultrusion is a consistent interaction that is used to create long, straight states with a constant cross-area. Pultrusion is similar to expulsion, except that the composite material is pulled into a pass on rather than moved. Pultrusion are distributed using a continuous support system. 'Wandering' strands provide longitudinal support and cross-over support in the form of tangle or fabric materials. These fortifications are generally built within a regulating, or performing, structure, and pitch impregnated by drawing through a sap wet-out station. They are
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3040 then shaped and restored in this manner using a heated bite the dust or set of dies. After the pass on measure it is cooled and machining measure is begun which is cut concurring prerequisites of testing measure.In Sample 1 contains three fibre the weight ratio of the fibre 15 % of banana fibre and 10% of sisal fibre and pineapple fibre.
In sample 2 the weight ratio of the fibre is 10% of banana fibre and the 15% of sisal fibre and pineapple fibre.
IV. METHODOLOGY
V. EXPERIMENTAL ANALYSIS
Before Tensile Testing
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3041 Before Impact TestingAfter Impact Testing
Before Water Absorption Testing
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3042 Before Corrosion TestingVI. RESULTS AND DISCUSSION
Tensile Test
Test Name: 1 Tensile Test
TEST NO CS Area[Mm2] PeakLoad [N] % Elongation UTS [N/MM2]
001 200.00 586.14 3.150 2.933
Test Name: 2 Tensile Test
TEST NO CS Area[Mm2] Peak Load [N] % Elongation UTS [N/mm2]
002 200.00 606.115 3.860 3.033
The sample 1 has 586.14 N peak load than the sample 2 has 606.115 N peak load which shows that sample 2 has higher tensile strength than sample 1. Higher strength is obtained because of high ratio sisal and pineapple.
Micro Hardness Test
Test Name: 1 Micro Hardness Test
Sample No MicroHardness(Vickers) Hv (H) Average
1 20.8
20.66
2 20.5
3 20.7
Test Name: 2 Micro Hardness Test
Sample No Micro Hardness (Vickers)Hv(H) Average
1 21.2
21.3
2 21.5
3 21.3
The sample 1 Average hardness value is 20.66 which is slightly lower than the sample 2 which has average of 21.3 Sample 1 hardness is low because the sisal fibre has low density compared with other two fibre.
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3043 Sample No. Izod Impact Value In J For Given Thickness1 0.50
2 0.60
The impact test is one of the mechanical properties test which kinetic energy to initiate fracture until the specimen is broken .sample is fixed load was applied by the arm which is released during the test.
Test Name: Water Absorption Test
Sample No. Weight Before Test In Gms Weight After Test In Gms (24 Hrs) % Of Water Absorption
1 7.46 11.63 55.9
2 8.42 12.97 54.03
Water absorption test results after the material is immersed in distilled water for 24 hrs weights are noted before and after the test. Ph value of water is 6.0, water is identified by checking the weights and weight will be increased because absorption of water.
Test Name: Corrosion Test
Sample No. Weight Before Test In Gms Weight Before Test In Gms %Loss In Weight
1 7.46 6.23 16.48
2 8.42 6.45 23.39
Corrosion test are used to determine the loss of weight, which the material is immersed in 5% NAOH solution in 1 litre of distilled water. The results are taken after 24 hrs and weights are noted before and after the test.
Tensile Graph
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3044Test 1.Tensile stress graph
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3045Test 2.Tensile load graph
VII. CONCLUSION
The material determination and properties of sisal/banana/pineapple fiber built up epoxy based crossover composites has been acquired till now with the assistance of different diaries. Support planning and test outcomes are yet to be gotten in future.
The present work showed the handiness of sisal fiber as support to other common fiber material. The ductile hardness and pressure trial of sisal/banana/pineapple fiber will be directed utilizing UTM machine. The composites may turn out to be less malleable as sisal fiber content is expanded. Further work should be done identified with fiber surface treatment and buildup disposal in reused HDPE to improve mechanical properties. From the results sample 1 which has 15% of banana fibre and 10% of sisal and pineapple fibre has much better water absorption and low corrosion behaviour than the sample 2 which has 10 % of banana and 15 % of sisal and pineapple fibre which has high corrosion behaviour and water absorption, but the sample 2 has high tensile strength and impact and hardness than the sample 1 this because higher pineapple fibre and sisal fibre.
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