NCETME - 2020: National Conference on Emerging trends in Mechanical Engineering

"NCETME 2020 Conference Papers "

Pages   [1] [2] [3]
 

Theoretical, Numerical Prediction Of Viscous Coefficient Of Venturi Meter Under Non Iso Standard Conditions[ ]


There are many pipelines where flows need to be accurately measured. Meters having a high level of accuracy and relatively low cost are a couple of the most important parameters when deciding on the purchase of a flow meter. Most differential pressure flow meters meet both of these requirements. Many of the most common flow meters have a specified range where the discharge coefficient may be considered constant and where the lower end is usually the minimum recommended Re number that should be used with the specified meter. With the additional knowledge of this study it will enable the user to better estimate the flow through a pipeline over a wider range of Reynolds numbers. The research completed in this study on discharge coefficients focused on Venturi meter with varying beta ratios and diameters. In the present work CFD tool Fluent is to describe the behaviour of flow meters from very low to high Reynolds numbers. In particular, the CFD predictions of discharge co-efficients were verified through comparison through results available in the literature. Results are presented in terms of predicted discharge co-efficients. Reynolds numbers deserve excessive observation when it comes to analyzing the capabilities of Venturi Meter. The value of the Reynolds number for a particular pipe flow can be decreased by either decreasing the velocity, or increasing the viscosity.Venturi flow meter models were created to determine their discharge coefficient data for a wide array of Reynolds numbers. The different beta(β) values used for the models were 0.60, 0.56,0.52,0.48, 0.44, and 0.4 to observe if there was any significant difference in results based on pipe diameter.

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Design and Fabrication of Mulch Paper Laying Machine[ ]


To meet the growing needs of the farmers who wish contionously to improve the profitability of their farming by using more efficient materials and machineries. The use of mulching paper in agriculture is increasing day by day to growing the importance in increasing the crop yield. It is also one of the best methods to cover the soil and maintain required atmosphere around the crop. The working and parameters of mulch paper laying machine for minimizing the human efforts and increasing productivity of crops.

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Optimum Allocation of Machine for Least Manufacturing Cost[ ]


Optimum allocation of machine plays a crucial role and it is a skeleton for each and every company based on which purchase of raw materials, production, distribution of goods takes place. The ultimate goal of allocation of machine in MAINI is to increase productivity by reducing lead time through coordination of material, machine, men and information, which flow across the company network and the entire customer including internal and external customers. Our project title “Optimum Allocation of Machine For least Manufacturing Cost’’ that in optimization of machine allocation is implemented in MAINI through Just in Time, Work study, time study, Method study, Ergonomics. In the present scenario, industries are facing large fluctuation in the market demands/trends. A new kind of machine allocation is required in manufacturing industry which is to be adapted to cope up with these kinds of stochastic events. Roughing machine and Sliding head machine Systems is considered as modern manufacturing paradigm which offers customized functionality and capacity as per the need. The key enablers of this customization in functionality and capacity are the Roughing machine and Sliding head machine Systems, Due to the multi functionality and capacity aspect, several machine configurations can be selected along stages to perform the desired operations. Assigning machine alternatives across stations for any product flow line has direct implications on the performance of the system. In this paper, optimal configurations are selected on the basis of cost, operation capability and reliability of the machines. The objective is to minimize the cost, maximize the operation and reliability of the selected machine configuration.

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FABRICATION OF BIO COMPOSITE PIPES USING BAMBOO FIBRE[ ]


Composite materials are one of the major developments in material technology in which the chief constituents are reinforcement and matrix. The current trend is to use the bio- degradable reinforcement like bamboo, jute, cotton and hemp etc., are greatly elongated substances produced by plant. Such natural fiber based composite materials have different applications. The objective of the present work is to fabricate the short bamboo fiber composite (SBFC) pipe as per ASTM standards using epoxy as matrix and studding the mechanical properties with conventional materials. By using epoxy and hardner with a certain ratios by mixing with short bamboo fibre. By prepaing the mould as per the ASTM standards and fill the mixed bamboo fibre hardner and epoxy in the mould and leave it for two to three days and the process is done by using ramming the mixed material into the mould. Using the releasing agent we have to remove the pipe from the mould and fabrication should be done to get finished product. Test the product with different types of tests known as Torsion test to know the twisting moment of the product, SEM Test is use to see the structure and behavior of the product , moisture content test to know the absorption of the liquid it can withstand the pressure . Three point bending test is done for the strength of the material. At last compare all the test reports with the conventional pipe (PVC).

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Evolution of Mechanical Properties of Al-Zn-Mg Alloy Processed by Equal Channel Angular Pressing [ ]


Equal channel angular pressing (ECAP) is one of the severe plastic deformation (SPD) techniques used to develop ultrafine-grained (UFG) materials. In this technique, large amount of shear strain is introduced in the material, without any change in the cross sectional dimensions. Aluminium-Zinc-Magnesium (Al-Zn-Mg) alloys are promising light weight high strength materials, wherein precipitation strengthening will be possible. In the dissertation work, Al-Zn-Mg alloy was processed by ECAP technique. ECAP processing was carried out in a die having an internal angle between two channels (Φ) of 120⁰ and outer arc curvature (ψ) of 30⁰. The processing was attempted at lowest possible temperature in route BC. To assess the mechanical properties, microhardness measurement and tensile tests were conducted. Wear properties were also evaluated before and after ECAP processing. After ECAP processing, significant improvement in the mechanical properties of the alloy were perceived. Microhardness and ultimate tensile strength (UTS) were increased with the increase in the ECAP passes. While elongation to failure of the alloy was decreased with the increase in the ECAP passes. ECAP processing leads to considerable improvement in the wear resistance of the alloy. Also, Coefficient of friction of the alloy was decreased with the increase in the ECAP passes.

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Design and Fabrication of Self Balancing Bike[ ]


This paper reports to design and build a bike prototype that is capable of driving and balancing without a rider. The Self Balancing bike will employ a control system to keep itself from falling over while in motion, and be propelled by a motor. The goal of this project was to build a two inline-wheel bicycle prototype capable of balancing itself using a flywheel. This bike is able to drive and also come to a complete stop without losing its balance. In order to maintain balancing, the sensor read input to detect tilt angle and correctly reacts to maintain a steady vertical position. Sensor data is fed into a control system which outputs a balancing torque to a motor spinning the flywheel. The requirements include that the bike should be capable of accelerating, driving in a straight line and stopping without falling.

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Application of Lean Manufacturing system in cutting/ Slitting machine[ ]


All manufacturing industry has put in continuous effort for its survival in the current impulsive and competitive economy. In order to handle the critical situation, manufacturers are trying to implement new and innovative techniques in their manufacturing process by making it more effective and efficient. This competitive atmosphere of production and high labor cost, motivate companies to use technologies like automation as a mean to increase manufacturing competiveness. On the other hand companies are aware about cost reductive policies like lean production which has shown noticeable achievements. Consequently some manufacturers tend to follow such systems. In this scenario, in order to have lean enterprise, it is vital to find a clear picture of challenges and potentials of implementing the right amount of automation.If the process of developing automation is not efficient and the manufacturing processes were not analyzed during the time, the result may not be lean. It will be a disastrous situation if the wrong technology was implemented or improper implementationofpropertechnology.So,findingtherightamountofautomationthat can be used in developing automation projects is veryimportant.Adetailedanalysiswasconductedonleanmanufacturingandautomationtoidentify the importance of each discipline. The aim of this report is to provide a suitable approach to implement lean automation and importance of it. A case study was carried out in order find the importance of the combination of lean and automation for an automated leanmanufacturing.

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A Review on Design and Development of Capsule Vehicle [ ]


The designing and development of hybrid electric vehicles in recent years have targeted for the reduction of on road emissions produced by the conventional IC-engine powered vehicles. This report presents designing and development of a hybrid electric two wheeler vehicle so that the overall efficiency of the vehicle (HYBRID) can be improved. The project utilizes a 160cc gasoline powered engine with a combination of a BLDC electric motor to further enhance the overall fuel efficiency of the system, particularly the fuel consumption rate. The vehicle can be propelled on both the electric and the normal conventional internal combustion engine. The power can be switched to which ever mode the driver requires or desires. There is a provision for the switch over of the propulsion of transmission from IC-engine to Electric drive or Electric drive to the IC-engine.

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SECONDARY OPERATION ON FUSION DEPOSIT MODELING[ ]


Rapid Prototyping is a technology and apparatus for fabricating physical objects directly from parts created in CAD using additive layer manufacturing techniques without manufacturing process planning, tooling or fixtures. In rapid prototype machines were used to produce models and prototype parts. Rapid Prototype technologies now support microscopic manufacturing largely in microelectronics as well as in optoelectronics fabrication and several major areas of rapid prototyping are introduced in manufacturing, Medical, Automobile, Aerospace. The recent research and studies indicating extra layer of epoxy coating makes the RP products water proof. This document will provide through understand of RP technology and surface finishing method to overcome liquid leakage.

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Process Optimization in CNC Turning using Grey Relational Analysis [ ]


The aim of the present work is to optimise the process parameter such as feed, speed and depth of cut in CNC turning process. The quality of the turning operation is depends on the surface roughness and material removal rate. The present work focuses on optimisation of turning parameters using the Taguchi technique to minimize surface roughness and maximize material removal rate. The experimental investigation for turning operations has been executed on a CNC lathe. Turning operations are performed based on the Taguchi 23 L8 orthogonal array for stainless steel (303) and HCHCr (D3). The optimal condition for both material removal rate and surface roughness are calculated by using a technique called grey relational analysis. Grey relation grade is used to calculate the optimal condition for combined parameters.

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The effect of different reinforcements on AA7075: A review[ ]


Aluminum 7075 alloy with zinc as primary alloying element it has excellent mechanical properties, good ductility, toughness and good resistance to fatigue. It has significantly better corrosion resistance. Aluminum alloys in various applications due to their predominant properties including low thermal expansion, high wear resistance. Aluminum and its alloys are one of the most versatile and economical metallic material for most engineering applications. Their low cost of production and excellent mechanical properties makes them the most potential materials for advanced aerospace and automotive applications. Among various grades of Aluminum alloy, 7075 grade is one of the most prominent and used for fabricating single The addition of Si3N4 particles improved the strength and micro hardness and wear resistance of the developed AMCs. Silicon Nitride (Si3N4) is a chemical compound of silicon and nitrogen. It is a white, high melting point solid that is relatively chemically inert. It was chosen as reinforcement due to its ability to resist high temperature wear and nature of chemical inertness . It is one of the most commonly used aluminum alloy for highly stressed structural application, and has been extensively used in aerospace, aviation, marine and automobile.

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Design and Fabrication of System to Convert Waste plastic into Crude oil[ ]


The study focus on the design and fabrication of System to convert plastic into oil as an effort in finding environment-friendly means of waste recycling by means of pyrolysis. It is an alternative solution to increasing problem of waste disposal. Pyrolysis keeps an added fuels such as petrol, kerosene, and diesel. Our Project deals with the extraction of oil from the waste plastics termed as plastic pyrolyzed oil which cuberunning without oxygen and in high temperature of around 250°C for which reactor is manufactured to give the expected temperature to theresponse. The waste plastics are subjected to depolymerization, pyrolysis, catalytic cracking and fractional distillation to obtain different value marketed at much cheaper rates compared to that present in the market. As we know that both Plastics and Petroleum derived fuels are Hydrocarbons that contain the elements of Carbon & Hydrogen.

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Design and Development of Mini CNC Machine for Small and Medium Scale Industries.[ ]


Increase in the rapid growth of technology significantly increased the usage and utilization of CNC systems in industries but at considerable expense. The idea of fabricating a low cost CNC milling machine came forward to reduce the cost and complexity in CNC systems. This discusses the development of a low cost CNC milling machine which is capable of 3-axis simultaneous interpolated operation. The lower cost is achieved by incorporating the features of a standard PC interface with micro-controller based CNC system in an Arduino based embedded system. The system also features an offline G-code parser and then interpreted on the micro-controller from a USB. Improved procedures are employed in the system to reduce computational overheads in controlling a 3-axis CNC machine, while avoiding any loss in overall system performance.

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Investigation of Mechanical Properties and Wear Behavior of Al 2024 Matrix Reinforced with Si3N4 and Graphene[ ]


The metal matrix composite materials are finding wide applications in industries due to their high strength to low density ratio, wear resistance, fatigue resistance, corrosion resistance. The present research work focuses on the fabrication of Al 2024 matrix composite reinforced with constant weight percentage of Silicon Nitride (Si3N4) and various weight percentage of graphene particles by conventional stir casting route and investigation of the mechanical. The percentage of Silicon Nitride in the developed composite is maintained at 6% and graphene is varied from 0.25% to 1% in steps of 0.25%. The mechanical properties such as ultimate tensile strength and hardness are improved at the cost of reduction in ductility with an increase in weight percentage of silicon nitride and graphene particles in the aluminum metal matrix.

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EXPERIMENTAL MEASUREMENT OF VIBRATION OF LIQUID DROPLETS[ ]


Droplet vibration finds numerous applications in inkjet printing, combustion sprays, drop atomization and so on. In several of these processes, the primary interest is to know the resonant frequencies and mode shapes of the drops. The variation ofexperimentally determined resonant frequencies with Bond Number is explored and found to be in good agreement with a 1D capillarygravity wave model

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DESIGN AND IMPLEMENTATION OF AUTOMATED PACKING SYSTEM APMC YARD USING DELTA ROBOT[ ]


Delta robots are widely used in automated process as pickers, delta robots can be used to pick and place of products from production line. Usually delta robots are implemented in vertically positioned portals. At its simple, delta robots consists of frame portal, three actuator arms and three motors. This investigation concerns the design and implementation three degrees-of-freedom (DOF) DELTA robot, covering the entire mechatronic process, involving kinematics, control design and optimizing methods. To accelerate the construction of the robot, 3D printing is used to fabricate end-effector parts. The parts are modular, low-cost, reconfigurable and can be assembled in less time than is required for conventionally fabricated parts. The controller, including the control algorithm.Delta robot design has attracted a great interest in industry and in academia. proposed the evaluation methodology of three degrees-of-freedom (DOF) which consists of local manipulability, transmission quality, stiffness and dexterity.

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Solar Powered Smart Bottle[ ]


In this project, by taking Solar Energy into consideration. We have prepared a water bottle fixed with a flexible solar panel to charge our daily drivers that is phones and tablets. The material used in making the bottle is also derived from nature that is Bamboo. In the aim to reduce or eliminate plastic waste. It considers the use of eco-friendly biodegradable material so as to bring an alternative for the use and throw or plastic water bottles in general. The bottle is also equipped with a 5W bluetooth speaker with a mic. This can be used for entertainment purpose during camping, treks or any adventure sport. It can also be used for attending calls through bottle itself, rather than taking ua phone out from the pocket. Thus the smart bottle is designed to achieve a multi purpose usage of a bottle which is environmental friendly in nature and with lots of health benefits.

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LEAD TIME REDUCTION IN PLANNING & PROCUREMENT[ ]


A Lead time is the latency between the initiation and execution of a process. In terms of Supply Chain Management lead time can also be defined as the time from the moment the customer places an order to moment it is ready for delivery. In manufacturing sector lead time includes the time required to ship the parts to the supplier. In project management lead time is the time it takes to complete a task or a set of interdependent tasks. In this paper, we interpret the causes for excess lead time and suggest practical, inexpensive strategies and procedures for reducing it. Our recommendations are based on detailed study of many manufacturing industries. Interpreting the differences between work in process, flow time variance and lead time, we systematically review potential methods for lead time reduction by reducing lead time or flow time variance.

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Mono Wheel Electric Vehicle [ ]


Mono wheel as the name indicates consists of a single wheel. the main principle involved is application of GYROSCOPE. The main aim of Monowheel is that it reduces the space occupied compared to other vehicle and environment friendly.Electrical vehicles can become a key to personal transportation in the environment where atmospheric pollution must be restricted, traffic conjunction is a severe issue and parking space is big concern especially in urban areas. Considering all these issues there is immense necessity of developing the transportation system that will be able to solve these problems. Developing a one-wheeled electric vehicle which has features that can over-come all the problems mentioned above since it has small longitudinal length and low carbon footprint. An electric unicycle is a self-balancing personal transporter with a single wheel. The rider controls the speed by leaning forwards or backwards, and steers by twisting the unit using their feet. The self-balancing mechanism uses gyroscopes and accelerometers in a similar way to that used by the Segway PT.

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Solar Powewred Waste Compacting Bin[ ]


Municipal waste management techniques can vary widely between countries and between regions within countries. Europe and several other places around the world favorEnvacation underground system of vacuum pipes to transport waste to landfills or incinerators Responsibility for waste management generally falls under the jurisdiction of local, state and territory governments. Trash compaction is a process of compacting waste. The various process of trash decomposition produces air pollution and water pollution. Nowadays trash is placed in one place greater level for decomposition. In India many garbage dust or waste left by creating pollution problem as well as environment problem. The objective of this project is to compact the trash without producing any pollution. With the help of microcontroller and compaction mechanism the size of trash is reduced so that in the so that in small space more trash can be stored. Again this compacted trash can be compact again and the space used to store the trash can be made free. It will also reduce the diseases wise main cause is trash.

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Studies on hardness and tensile testing of AlSi10Mg produced by Selective Laser Melting [ ]


The present paper systematically investigated the influence of solution heat treatments on mechanical properties of SLM-produced AlSi10Mg alloy parts. Due to the high cooling rate of SLM the internal stress which gives rise to significantly better tensile properties and Vickers micro-hardness. The variation in size of the Si particles has a significant influence on the mechanical properties of the AlSi10Mg samples. The tensile strength decreases from 433.25 MPa for the as-built sample to 166.11 MPa, while the fracture strain remarkably increases from 5.30% to 23.7% when the as-built sample is solution-treated at 550oC for 2 h. This study indicates that the mechanical properties of SLM-processed AlSi10Mg alloy can be tailored by suitable solution and artificial aging heat treatments.

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Design of Cardiopulmonary resuscitation Machine [ ]


CPR is the basic life support refers to the care healthcare providers and public safety professionals provide to patients who are experiencing respiratory arrest, cardiac arrest or airway obstruction. According to recent statistics sudden cardiac arrest is rapidly becoming the leading cause of death. once the heart ceases to function, healthy human brain may survive without oxygen for up to 4minutes without suffering any permanent damage.CPR is used to establish circulation and artificial ventilation in a patient who is not berthing an has no pulse, now a recent days many CPR devices are available in the market but all of require skill operator, and cost is more also that devices only used in hospitals. Because of this the work redefines the role of techniques an develop a framework to support the process of implementing a predictive microcontroller as a prime method To supporting the change.

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Multi Axis Solar Tracking system[ ]


The goal of this work is to develop a prototype model of solar tracking system, which is used to enhance the performance of the photovoltaic modules in a solar energy system. The operating principle of the device is to keep the photovoltaic modules constantly aligned with the sunbeams, which maximizes the exposure of solar panel from the solar radiation. As it result to more power output that can be produced by the panels. This project included design of hardware and implementation with software programming for microcontroller unit to solar tracker. The system utilized an ATMEGA328P microcontroller to control motion with servo motors, which rotate solar panel in different axes. The amount of rotation was determined by the microcontroller, based on inputs retrieved from photo voltaic sensors located next to solar panel. At the end of the project can able to function the solar tracking system, it was designed and implemented and it can able to keep the solar panel aligned with the sun rays.

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Managing Operations to Obtain OEE Target through SAP Data by Reducing Machine Downtime[ ]


The purpose of this paper is to present a sample of how manufacturing companies deal with equipment downtime cost, and further how they analyze its reduction. The study was performed by conducting a survey within Company that has at least 200 employees. Manufacturing strives to reduce waste and increase Overall Equipment Effectiveness (OEE). When managing machine maintenance, a manufacturer must apply an appropriate decision technique in order to reveal hidden costs associated with production losses, reduce equipment downtime competently and similarly identify the machines’ performance. OEE is a powerful metric of manufacturing performance incorporating measures of the utilization, yield and efficiency of a given process, machine or manufacturing line. The Study estimates the total downtime of machine and causes of the machine downtime. The simple mechanism has adopted to reduce the loading and unloading time, by this mechanism the downtime has reduced partially. In addition, the OEE get improves

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Review of Aluminium Alloy through Powder Route[ ]


Aluminum base powder metallurgy alloy article having an improved combination of high-transverse yield strength and high-stress corrosion cracking resistance. The alloy contains the basic precipitation hardening elements zinc. The bonding materials are mixed up with aluminum and zinc alloy to form a mixture. After the mixing process compacting and forming a solid mass of material by heating below the melting point of metal. Zinc varies from 8% to 12 % and mixed up with aluminum and heated below 400°c. In this an attempt has been be made to study the structural and mechanical properties of Aluminium alloy with zinc as macro addition using Powder metal forming with conventional sintering techniques. Powder metal forming process gives an advantage in terms Cost, quality of finished products, precision and considerable saving in raw materials as compare to other metal forming process.

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FABRICATION OF WATER TANK CLEANING MACHINE[ ]


The goal of this project is to develop a mechanical device for cleaning cylindrical domestic water tanks. The mechanical system includes the brushes with motor, shaft, battery and arms. The arms are set, the pump is turned on, the motor draws power from the battery and rotates the shaft at low RPM and the brushes mounted on the arms start scrubbing the tank's inner walls with high torque. Water is one of those regular assets, which for certain reasons, particularly for drinking, is fundamental to each individual. We certainly realize that earth is made of water (three-fourth of the earth), but the whole fourth is not fresh water. In this way, it is our obligation to spare water, keep the new water as fresh as might be expected. The water which is pumped to our home is undoubtedly clean, but it is also the place where it is stored clean. Indeed, we are thinking about the water tanks that are overhead. The quality of your water depends primarily on how clean your tank is. Hence, it is very necessary to clean the overhead water tank. Our aim of this project is to develop a mechanical system for cleaning cylindrical household water tanks

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Performance and emission study of a CI engine fuelled with biodiesel blended with kerosene[ ]


Due to the concern on the availability of recoverable fossil fuel reserves and the environmental problems caused by the use those fossil fuels, considerable attention has been given to biodiesel production as an alternative to petrodiesel. Biodiesel is an eco friendly, alternative diesel fuel prepared from domestic renewable resources i.e. produced from vegetable oils and animal fats. It is a renewable source of energy seems to be an ideal solution for global energy demands including India as well. The general way to produce biodiesel fuel is by transesterification of vegetable oil with methanol in the presence of either alkaline or strong acid catalysts. Transesterification reaction is quite sensitive to various parameters. An ideal transesterification reaction differs on the basis of variables such as fatty acid composition and the free fatty acid content of the oil. Other variables include reaction temperature, ratio of alcohol to vegetable oil, catalyst, mixing intensity, purity of reactants. This review paper describes the chemical composition of vegetable oils, fuel properties vegetable oils and biodiesel, transesterification process, the most important variables that influence the transesterification reaction, environmental consideration and economic feasibility of biodiesel.

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Design and Development of Spray Atomization Process for Atomization of Light Structural Alloys[ ]


Aluminium is remarkable for the metals which is having low density for its ability to resisit corrosion due to phenomenon of passivation. The copper has been the most common alloying element almost since the begning of the aliminium industry, and variety of alloys in which copper is major addition were developed. The addition of copper to pure aluminium improves the Mechanical and structural properties. Aluminium copper alloy of copper content 4.5% is subjected to spray automization and the Micro structural characterstics of spray formed aloy was analysed by optical metallurgical microscope. The mechanical properties were determined by conducting the hardness test and tensile test.

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Design and Fabrication of Automatic Channel Cleaner [ ]


The design and development of a sustainable automatic channel cleaner which is self-sufficient of collecting solid floating waste from channels, river…etc. Idealization of this concept was to aid water flow in channels and thereby rivers. Inclined to the saying clean village results in clean city and cleaner city makes country clean, we have developed this machines which collects solid floating waste from flowing water and dumps it at an offset collecting bin. This machine is developed by bearing in mind the problems of urban flooding, cloggage and in these situation deploying humans is merely impractical and treacherous. Thoughtfully in case of low flow the machine is aided with a battery operated dc motor, the battery is powered by solar panel making the system sustainable.

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STUDY ON EFFECT OF HEAT TREATMENT ON THE MICROSTRUCTRUAL EVOLUATION & MECHANICAL PROPERTIES OF S2205 (DUPLEX STAINLESS STEEL)[ ]


Duplex stainless steels offer better corrosion resistance and mechanical properties than Austenitic stainless steels because of its unique microstructure which consists of ferrite and austenite phase distributed in equal proportions. From literature it is known that duplex stainless steels are stable only below 300ºC and above this temperature, the duplex steels will undergo micro structural change and in turn will affect the mechanical properties. There are many intermetallic phases found in duplex steel but the sigma phase is very important since its formation is around 700 to 950ºC.  The sigma phase occurs is rich in Chromium and Molybdenum content. The peak temperature is around 900ºC were ferrite will be decomposed into sigma phase and it may take as little as two minutes in super duplex alloys. In this regard our study was aimed to study the influence effect of heat treatment temperature on the microstructure and mechanical properties of S2205 duplex stainless steel. In our investigation the solutionised samples were heat treated at various temperatures and all the samples were evaluated. The results showed that maximum amount sigma phase was induced at 900°C for 60 minute which was validated by tensile and microstructures results. 

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Studies on Al 4.5 wt.%Cu Alloy Processed Through Die Casting Process[ ]


Al-4.5 wt. % Cu alloy was melted in an electrical resistance furnace. After melting, the melt was transferred into a metaalic die to prepare the casting. The density of the sample was measured using water displacement method. The microstructuaral analysis was carried out using optical metallurgical microscope. For microstructural analysis samples were polished with four grades of emery papers followed by alumina and diamond disc polishing. Finally sampled were etched with Keller’s etchant. The microhardness of the samples were measured using Vickers microhardness tester with the dwell time of 10 s. The tensile test was carriedout using universal testing machine to calculate 0.2 % yield strength and ultimate tensile strength of the sample.

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Design and Analysis of Hat-Stiffened Conical Shell for Axial Compression[ ]


This study aims to design and analysis of Hat stiffened conical shell for under axial compression. Shells may be subjected to axial compression, bending, twisting or external or internal pressure anyone of which can cause failure. Depending on the geometry of the conical shell either local or overall buckling failures can occur. To provide additional strength, axially compressed conical shells are sometimes Hat stiffeners are placed. Further, the Hat stiffeners are placed on the inner periphery of the skin for the model. Moreover, hat stiffeners placed on the inner periphery provides more BLF than the stiffeners placed in the outer periphery of the skin. Buckling load carrying capacity of the stiffened conical shell is compared with analysis software Abaqus.in this study only aims buckling analysis. Theoretical calculations are also carried out for verify the results obtained from finite element analysis. Aircraft aluminum alloy (AA2014 T6) is chosen for these project.

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Design and Analysis of CFRP Boom for Supporting TTC antenna[ ]


Telemetry Tele-Command (TTC) antenna is an essential part of every spacecraft used to track and guide the spacecraft during launch phase and attitude control of the spacecraft in-orbit. As it is very clear from its functional requirements, the antenna should be always in line of sight of ground control stations. To maintain such continuity requirements of line of sight, this antenna generally mounted on any of the external deck of spacecraft with the help of long tubular (typically) structure. Usually, these kinds of structure are made of metallic alloys like Aluminium Alloys. Aluminium alloys are pre- ferred choice because of availability and easy machinability. But in cases, considering the longer arm length required for TTC antenna structure; alumini- um alloy is not a good choice for meeting the stiffness requirements. Hence, an option with CFRP composite tubular structure is considered in this study. Being orthotropic material CFRP has an added advantage of tailorability of its properties in the direction of benefit over and above high specific modulus and high specific strength. This thesis presents a comparative study of analytical aspects, fabrication aspects and tests results of both metallic and com- posite TTC antenna support structure

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CFD Analysis and Optimization of Pin Fin Heat Sink[ ]


In the present paper, the 3-dimensional CFD simulation of heat transfer and air flow in circular pin fin heat sink are presented for Electronic component cooling application. The circular pin fin heat sink are simulated for different alloys like Aluminium alloys i.e.6063-T83, 7075-O(SS) and Copper alloys i.e. Chromium Copper. In this study comparing the heat transfer rate with respect to different alloys under Natural Convection. The goal of this study was to maximize the thermal performance of heat sink with respect to different material such that it helps to finding material selection, low cost material and good heat transfer rate for designing the heat sink.

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DESIGN & DYNAMIC ANALYSIS OF AERO TURBINE DISC[ ]


This study summarizes the design and analysis of Gas turbine blade, as turbine discs have numerous applications in the aerospace industry, such as in liquid rocket engines. In this study, the stresses and deformations of a turbine disc were studied. The goal was to highlight the stress and deformation distribution to assist in the design of a disc as well as to demonstrate the importance of using finite element (FE) analysis in simulating an actual design case. CATIA is used for design of solid model and ANSYS software for analysis for F.E. model generated. The stresses and deformations developed as a result of the disc operating conditions at high rotational speeds. Applying boundary conditions of displacement constraints. Static and dynamic stress analyses results were determined and FOS was tabulated based on material properties.

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Studies on Loss of Preload in the Fastener Joint during Vibration[ ]


Fasteners are widely used for temporary joining of different components that required for occasional for assembling and disassembling. Fasteners have problem in self loosening due to vibration, which may leads to decreases in the clamping force and their by causes joint failure. Vibration is undesirable. Vibration introduces stress into mechanical system and creates fatigue which decreases the service life. It can loosen the fastener in the joints. Junker testing machine is used for the testing the fasteners. Based on ISO16130 standard the following test requirements are carried out. Initial torque is given and Preload is given within 30 to 80% of yield strength of the bolt material and coefficient of friction in given to the bolted joint. In the present investigation loosening characteristics of a fasteners and loss of preload in fastener joint during the vibration are presented and discussed below.

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Structural and Thermal Analysis of Drum Brake[ ]


A brake is a mechanical device which inhibits motion. A drum brake is a brake that uses friction caused by a set of shoes or pads that press against a rotating drum-shaped part called a brake drum. The commercial brake system uses disc brake for front wheels and drum brake for the rear wheels. Grey cast iron is the conventional material used for making brake drums of light and heavy motor vehicle. The brake drum is a critical component that experiences high temperatures and develop thermal stresses during application of brakes. In addition, the application of shoe pressure gives rise to mechanical loads. So the analysis takes into account both the thermal stresses and mechanical stresses together. So in this project we design the model of drum brake using Catia software and perform structural and thermal analysis using Ansys software and check how the temperature of the surface varies and also check what is the deformation and stress created in the model due to pressure applied by the brake shoes.

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