Mechanical Engineering

Connecting rod is used in reciprocating engine to connect the piston to the crank shaft. Together with the crankshaft it form a simple mechanism which convert reciprocating motion to rotary motion. Mostly connecting rods are used in automobile sector.

The aim of the work was to increase the productivity of workers. The various independent parameters like BMI, Buttock-Knee length, Popliteal Height, Seat base height, back rest support height, and room temperature during deburring process of mat was investigated and also finds out influence parameter on productivity of worker. Considering these parameters the two important aspects to be considered are productivity of human workers along with the comforts to the workers. We would like to find out which parameter is most important for increasing the productivity. The focus of this paper is to develop a Multivariable Linear Regression and Artificial Neural Network models which will predict the experimental evidences accurately. It was observed that the ANN model predict the productivity with correlation coefficient (R) 0.9412. The prediction Mean Square Error was between the desired outputs as measured values and the simulated values were obtained as 0.5009 by the model.

The effects of control factors (parameters) were determined by experimental study by using Taguchi Fractional factorial design of deburring process of Mat manufacturing process. The optimum process parameters were determined based on their influence on the output of women workers. This study involves six factors viz. BMI, Popliteal height, Buttock-knee length, Seat base height, Seat back rest height and Room temperature were investigated in this study. The response/dependent variable is workers efficiency in terms of output. Taguchi’s technique was used for experimentation. Taguchi L27 orthogonal array (OA) was applied to evaluate the effect of theses parameters’ and signal-to-noise data used for compute the importance and their effect on the response parameter. The analysis of variance (ANOVA) has been used to evaluate a most favorable result of the parameters. The results showed that the seat base height was the most significant parameter followed by BMI and the least influence wa...

Productivity of the workers in mat manufacturing unit depends on workstation design as well as environmental condition as well as their comfort depends on working postures and working environment. Awkward, extreme and repetitive postures have been connected with work related musculoskeletal disorders and injury to the lower back of workers engaged in deburring process of PP Mat industries. Basically this process is performed manually by hand while sitting with folding legs at knee posture on the hard floor. In that situation which leads to various injuries associated to low back as well as neck and shoulder. The present study was carry out in M/S Varun Polymer, Jalgaon MIDC District of Maharashtra State India with the objective to study the physical and physiological parameters as well as the work station layout of the respondent engaged in Mat manufacturing unit. A total of 46 subjects were selected to study involved in mat making enterprise and to make the provision of technology ...

Heat exchanger is a device which exchanges heat between two flow lines. The goal of this article is to emphasis and presents briefly the heat exchanger designs used for liquefaction of nitrogen gas and subcooling of liquefied gas. Different researchers proposed various heat exchanger designs for liquefaction and subcooling of liquid nitrogen. The liquefied nitrogen gas has many applications. In this article, the heat exchanger designs developed by researchers over the time for effective subcooling of liquid nitrogen are addressed and studied. Further content is focused on increasing effectiveness of this type of heat exchangers for effective subcooling. The gaps in research identified and mentioned in the article. Keywords― Liquid nitrogen, Heat exchanger, Subcooling

Every country in the world wants to gain to the title of a developed country rather than a developing or undeveloped country. Without the availability of energy, the objective could not fulfill. This leads to the global issue of environmental pollution due to the excessive use of fossil fuels. The transport sector is the biggest contributor around 24% of direct carbon dioxide emission to the environment after fuel combustion. Concept of electric vehicles (EVs) strongest alternative for internal combustion engines, which may reduce air pollution up to a certain extent. Li-ion batteries gaining popularity due to their numerous advantages like zero-emission, recyclability, good power density in electronic appliances and EVs. Although Li-ion batteries are having positive attribute, it has few limitations of overheating due to excessive heat generation. The Li-ion batteries perform better for the temperature range 15 0C to 40 0C. The operation of batteries below and above the given limits may lead to serious issues like an explosion or short circuit. Therefore it is essential to provide an optimal thermal management system. The paper comprises the effect of temperature on battery performance and battery thermal management systems. Henceforth many of the researchers working extensively on developing an optimized battery thermal management system. Researchers categorized these systems into two basic types i.e. active and passive cooling. Active cooling preferred the use of air and liquid to fulfill the target, while passive cooling utilizes phase change materials (PCM), heat pipes, and nanomaterials. Each of these methods has its limitations and advantages. While choosing a BTMS few factors need to be kept in mind like volumetric constraints, cost of installations, and efficiency of the system.

Nowadays many scientific and technological
efforts are being devoted to Research and
Development on thermal energy storage for
solar power plants. Abundant use of fossil
fuels to meet ever increasing global energy
demand has put question marks upon the
feasible future of human beings because of
the environmental problems. Solar Thermal
Energy is one of the major technologies
esteemed to replace the fossil fuels. Purpose of
this paper is to investigate molten salt as an
efficient thermal storage fluid. This project
gives insight about the classification and
characterization of molten salts as a thermal
storage fluid. The experimental setup is
developed to test temperature range of
Sodium Nitrate (NaNO3) and Potassium
Nitrate (KNO3) mixtures using Aluminum,
Copper and Iron fins. It is found that using
iron fin (02 Nos) are more efficient i.e.
attained maximum temperatures in minimum
time. These results and successive discussions
will be the useful data for future research.

Heat exchanger is a device which exchanges heat between two flow lines. The goal of this article is to emphasis and presents briefly the heat exchanger designs used for liquefaction of nitrogen gas and subcooling of liquefied gas. Different researchers proposed various heat exchanger designs for liquefaction and subcooling of liquid nitrogen. The liquefied nitrogen gas has many applications. In this article, the heat exchanger designs developed by researchers over the time for effective subcooling of liquid nitrogen are addressed and studied. Further content is focused on increasing effectiveness of this type of heat exchangers for effective subcooling. The gaps in research identified and mentioned in the article. Keywords― Liquid nitrogen, Heat exchanger, Subcooling

The aim of the work was to increase the productivity of workers. The various independent parameters like BMI, Buttock-Knee length, Popliteal Height, Seat base height, back rest support height, and room temperature during deburring process of mat was investigated and also finds out influence parameter on productivity of worker. Considering these parameters the two important aspects to be considered are productivity of human workers along with the comforts to the workers. We would like to find out which parameter is most important for increasing the productivity. The focus of this paper is to develop a Multivariable Linear Regression and Artificial Neural Network models which will predict the experimental evidences accurately. It was observed that the ANN model predict the productivity with correlation coefficient (R) 0.9412. The prediction Mean Square Error was between the desired outputs as measured values and the simulated values were obtained as 0.5009 by the model.

The effects of control factors (parameters) were determined by experimental study by using Taguchi Fractional factorial design of deburring process of Mat manufacturing process. The optimum process parameters were determined based on their influence on the output of women workers. This study involves six factors viz. BMI, Popliteal height, Buttock-knee length, Seat base height, Seat back rest height and Room temperature were investigated in this study. The response/dependent variable is workers efficiency in terms of output. Taguchi’s technique was used for experimentation. Taguchi L27 orthogonal array (OA) was applied to evaluate the effect of theses parameters’ and signal-to-noise data used for compute the importance and their effect on the response parameter. The analysis of variance (ANOVA) has been used to evaluate a most favorable result of the parameters. The results showed that the seat base height was the most significant parameter followed by BMI and the least influence wa...

Productivity of the workers in mat manufacturing unit depends on workstation design as well as environmental condition as well as their comfort depends on working postures and working environment. Awkward, extreme and repetitive postures have been connected with work related musculoskeletal disorders and injury to the lower back of workers engaged in deburring process of PP Mat industries. Basically this process is performed manually by hand while sitting with folding legs at knee posture on the hard floor. In that situation which leads to various injuries associated to low back as well as neck and shoulder. The present study was carry out in M/S Varun Polymer, Jalgaon MIDC District of Maharashtra State India with the objective to study the physical and physiological parameters as well as the work station layout of the respondent engaged in Mat manufacturing unit. A total of 46 subjects were selected to study involved in mat making enterprise and to make the provision of technology ...

Heat exchanger is a device which exchanges heat between two flow lines. The goal of this article is to emphasis and presents briefly the heat exchanger designs used for liquefaction of nitrogen gas and subcooling of liquefied gas. Different researchers proposed various heat exchanger designs for liquefaction and subcooling of liquid nitrogen. The liquefied nitrogen gas has many applications. In this article, the heat exchanger designs developed by researchers over the time for effective subcooling of liquid nitrogen are addressed and studied. Further content is focused on increasing effectiveness of this type of heat exchangers for effective subcooling. The gaps in research identified and mentioned in the article.

Every country in the world wants to gain to the title of a developed country rather than a developing or undeveloped country. Without the availability of energy, the objective could not fulfill. This leads to the global issue of environmental pollution due to the excessive use of fossil fuels. The transport sector is the biggest contributor around 24% of direct carbon dioxide emission to the environment after fuel combustion. Concept of electric vehicles (EVs) strongest alternative for internal combustion engines, which may reduce air pollution up to a certain extent. Li-ion batteries gaining popularity due to their numerous advantages like zero-emission, recyclability, good power density in electronic appliances and EVs. Although Li-ion batteries are having positive attribute, it has few limitations of overheating due to excessive heat generation. The Li-ion batteries perform better for the temperature range 15 0C to 40 0C. The operation of batteries below and above the given limits may lead to serious issues like an explosion or short circuit. Therefore it is essential to provide an optimal thermal management system. The paper comprises the effect of temperature on battery performance and battery thermal management systems. Henceforth many of the researchers working extensively on developing an optimized battery thermal management system. Researchers categorized these systems into two basic types i.e. active and passive cooling. Active cooling preferred the use of air and liquid to fulfill the target, while passive cooling utilizes phase change materials (PCM), heat pipes, and nanomaterials. Each of these methods has its limitations and advantages. While choosing a BTMS few factors need to be kept in mind like volumetric constraints, cost of installations, and efficiency of the system.

In the present research work a new method of optical strain measurement (Machine vision system) was proposed for the analysis of flow behaviour of pure aluminium as a function of friction, aspect ratio and specimen geometry. Implementation of this new method reduced the extent of experimentation. Eight standard shapes of the axisymmetric specimens of cylindrical with aspect ratios 1.0 and 1.5, ring, flanged and tapered were selected for the present investigation. Specimens were deformed in compression between two flat platens to predict the metal flow at room temperature. A 4 X 4 mm square grid was marked at mid plane of the standard specimens. Online video images of square grid were recorded during the deformation process till the crack initiation. The distortions of grid from recorded images were analyzed offline. Finite element software ANSYS has been applied for the analysis of the upset forming process. The FEA results were compared with the analytical results of various stresses from the experimental measurements of axial, circumferential strains and found to be in good agreement. Ring compression tests with its finite element analysis were carried out to determine the friction factor (m) between the die and work piece and same found to be 0.3.

Cylindrical specimens of Electrical Conductivity grade aluminum were upset between flat platens to study the metal flow at room temperature. Platen-specimen-interface lubrication and specimen aspect ratio (height/diameter) were studied as process parameters. A vision system using PC-based video recording with a CCD (charge coupled device) camera was used to study the predrawn grid deformation at the midplane of the specimen and corresponding flow behavior. The forming process has been modeled and analyzed using the finite element software ANSYS. Lubrication minimized barreling of the lateral-free surface. Barreling decreased with increased aspect ratio. Microhardness studies reveal nonuniform deformation within the specimen. This effect was pronounced with high friction and low aspect ratio.

Aluminium matrix composites (AMC) are mostly preferred for their high specific strength, high ductility, corrosion resistance and creep resistance. Various experimental investigations are conducted in the field of AMCs, which are widely applicable in several fields like aerospace (especially aircraft structures and fittings), marine fittings, automotive industries (connecting rods, pistons, brake rotors, and engine blocks), etc. The current work presents the effect of a tungsten carbide (WC) reinforced Al6061/SiC hybrid composites. In this study, the WC particle (3÷5 μm) content is varied from 0 to 6 wt.% in steps of 2 wt.%, while keeping the SiC particle (63 μm) content of 5 wt.% constant. The stir casting method was used to prepare these composites and the behaviour of the composites was studied to ascertain their mechanical and corrosion properties. From the obtained results, it was observed that the ultimate tensile strength, hardness, and corrosion resistance of the composites ...

Figure describes the standardized calculation order for conversion of SFOC from Reference condition (ISO) to Site/FAT condition, and from Site/FAT condition to Reference condition (ISO). Following description is focussed on how to calculate a conversion from site/FAT condition to reference condition ISO.