Mechanization and Import Substitution in Zimbabwean Farmers' Equipment: A Case Study of the Revitalization of an Abandoned Tractor Trailer
Drill String Vibrational Analysis and Parametric Optimization for a Portable Water Well Rig Development
An Efficient Deep Neural Network with Amplifying Sine Unit for Nonlinear Oscillatory Systems
The Occupational Directness of Nanorobots in Medical Surgeries
Recent Trends in Solar Thermal Cooling Technologies
Design of Oil-Ammonia Separator for Refrigeration Systems
A Review on Mechanical and Tribological Characteristics of Hybrid Composites
Design and Experimental Investigation of a Natural Draft Improved Biomass Cookstove
Progressive Development of Various Production and Refining Process of Biodiesel
Optimization of Wire-ED Turning Process Parameters by Taguchi-Grey Relational Analysis
Evaluation Of Mechanical Behavior Of Al-Alloy/SiC Metal Matrix Composites With Respect To Their Constituents Using Taguchi Techniques
Multistage Extractive Desulfurization of Liquid Fuel by Ionic Liquids
Isomorphism Identification of Compound Kinematic Chain and Their Mechanism
Development of Electroplating Setup for Plating Abs Plastics
A Comprehensive Review of Biodiesel Application in IDI Engines with Property Improving Additives
A wheel rim is one of the most important parts of a vehicle. Invention of the wheel was amongst a major breakthrough in early days. A wheel rim, along with chassis or the frame of the vehicle holds the load of the automobile and its passengers providing cushioning effect. In this paper performance of different materials used in making wheel rim are checked through CAE software. Different alloys and materials are tested which can be used for the alloys of vehicles in the future. Alloy wheels differ from steel wheels because of their lighter weight, which improves the driving and handling of the vehicle. The material chosen for making wheel spokes needs to have certain qualities as to be suitable for the use. The properties are thermal conductivity, machine processing, corrosion resistance, characteristics of casting, low temperature, high damping property, excellent lightness, and recycling, etc. A wheel rim is subjected to many loads which causes damage to the rim. Increasing the performance of rim can increase the overall performance of the vehicle. With new researches, materials have evolved. The evolvement of the material has led to the invention of composite material. A composite material has better properties as compared to alloys and other materials. Composite material has better strength, low weight and other mechanical and chemical properties. Superiority of composite materials is proved by the results in this manuscript. By using composite material the properties gets improved as a result of which overall vehicle performance is improved.
The thin cylindrical shaped shells undergo weight load failure leading to buckle the shape of shell which leads to the failure of the shell. The buckling failure can be determined by applying practical load analysis on the cylindrical shells. The present paper used three different materials such as Mild steel, Aluminium Alloy and Titanium alloy with the same dimensions such as radius, length and thickness are opted for conducting buckling simulation analysis on thin shells. The cylindrical shells are subjected to Axial Compression and Lateral Pressure at constant pressure. The buckling behavior of thin cylindrical shells subjected to the different loads and boundary conditions with buckling stresses are simulated using ABAQUS and compared with the obtained results. The optimum design of cylindrical shell and material can be determined from the failure of the cylindrical shell.
Metal Inert Gas (MIG) welding is one of the most frequently used welding processes in various industrial applications. Welding current, voltage and inert gas CO flow rate have been considered as process parameters to optimize and their 2 effects on welding quality have been studied. Tensile strength of welded joint increases with increase in voltage, then it decreases. However, tensile strength increases with current and gas flow rate up to optimum values, then it decreases. The S/N ratio for all responses is calculated using MINITAB-17 software. The values of observed responses and S/N ratio for welded zone hardness, which shows that maximum welded zone hardness is 91 at 140 A welding current, 20 V welding voltage and 0.366 cm/second welding speed. The maximum S/N ratio of welded zone hardness is 39.1808 at optimum process parameters. For HAZ, maximum welded zone hardness is 87 at 160 A welding current, 24 V welding voltage and 0.536 cm/second welding speed respectively. The maximum S/N ratio of HAZ hardness is 38.7904 at optimum process parameters for HAZ. Maximum Ultimate Tensile Strength is 500 N/mm² at optimum process parameters respectively. The maximum S/N ratio of tensile strength is 53.9794 at optimum process parameters. Taguchi method is used successfully to analyse and determine the optimum process parameters to maximize HAZ hardness, welded zone hardness and tensile strength in MIG welding process.
An aerofoil is a structure used in fluid flow conditions. The structure offers the variation in velocity and pressure of flowing fluid when passed on it. The lift and drag forces are depending on the pressure created and variation in velocity. The present paper is carried out to study the pressure and velocity contours of fluid flow. The different conjugations considered are circular dimples on the surface of the aerofoil, circular dimples above and below the surface of the aerofoil, triangular dimples on the surface of the aerofoil and triangular dimples above and below the surface of the aerofoil. The flow analysis of NACA 6412 at an angle of attack of 4 degrees is carried out in SIMULIAXFlow.
The forced flow behaviour for a grooved geometry attached with a nozzle has been analysed in the current study. A geometry with triangular grooves on either walls of the surface has been attached with nozzle having different angles of convergence. The angle of convergence has been restricted to a range of 10o to 90o. These geometries with the modifications in each of the case has been examined for the heat swapping contours using the ANSYS – FLUENT software. The analysis depicted the results accordingly by the applied conditions using the software conceptions. These conception generated results displayed the geometry with 45o convergence angle of the nozzle as the optimum one as it has depicted the maximum deviation in terms of the heat swapping. This intermediate geometry between the 40o and 50o has been considered as the best one, i.e,. the mean geometry for both. The generated software results has been compared with the regression data using the equations generated. These comparisons depicted the maximum accuracy thereby declaring that both the data are in good correlation with each other. These comparisons can be applied to larger models with further modifications.
One third of heat energy generated by the automotive internal combustion engine is wasted in the exhaust system. The total heat energy supplied to the engine in the form of combustible fuel approximately, 35% to 40% is converted into productive mechanical work and the remaining energy in the form of heat is expelled by the exhaust gas resulting in the rise of entropy and serious environmental pollution. There is a demand to utilize this waste heat from the vehicle into useful work output. Thus, the wasted heat can be used to run the absorption refrigeration system. The engine exhaust system is connected to the generator of the refrigeration system to supply the input heat required for the refrigeration process. The temperature of the evaporator was measured for various loading condition of the engine. The result indicates the performance of the refrigeration system. To increase the performance of the refrigerator with increase in temperature of the exhaust gas. In this experimental set up we obtained maximum cooling up to 16o C.
