Papers by Dr Syath Abuthakeer S - PSGCT
A study on multi-walled carbon nanotube reinforced Al7075 nano composites by P/M route
INTERNATIONAL CONFERENCE ON MATERIALS ENGINEERING AND MANUFACTURING SYSTEMS: ICMEMS2022
Effects of friction stir welding process on the microstructure and mechanical properties of AA8090—T87 aluminium alloy
Surface Topography: Metrology and Properties
AA8090 aluminium lithium alloy which is employed in the fuselage of airplane and in the cryogenic... more AA8090 aluminium lithium alloy which is employed in the fuselage of airplane and in the cryogenic fuel tank was successfully welded using friction stir welding technique. Nine set of experiments were conducted by employing 700 rpm, 900 rpm, and 1100 rpm rotation speed with varying traverse speeds of 30 mm min−1, 50 mm min−1, 70 mm min−1 to arrive at the best possible combination of inputs and obtain better joint efficiency. The macroscopic, microscopic and mechanical property analysis were performed to determine the effectiveness of the joint. Based on the results of the aforementioned studies, the best combination of input parameters such as rotational speed and traverse speed for the welded specimens were determined as 700 rpm and 30 mm min−1, 700 rpm and 70 mm min−1 respectively. Tensile strength of 700 rpm and 30 mm min−1, 700 rpm and 70 mm min−1 joints were found as 238.1 MPa and 222.56 MPa, micro hardness of the afore-mentioned joints were 107.3 VHN and 123.1 VHN and are subje...
Factors influencing the gas porosity formation in A438 alloy wheels produced by gravity die casting
INTERNATIONAL CONFERENCE ON MATERIALS ENGINEERING AND MANUFACTURING SYSTEMS: ICMEMS2022
Investigations on the combined effects of Thiobacillus Novellus microorganism and process parameters on the bio-machining of NiTi
Biomass Conversion and Biorefinery
Compressive Behavioural Analysis of LM26/ZrB2 Composite Using Finite Element Method
Lecture notes in mechanical engineering, Sep 19, 2022
Abstract: This Lean manufacturing to consist of different tools and techniques and it will be use... more Abstract: This Lean manufacturing to consist of different tools and techniques and it will be used in the appropriate industry according to the problems faced by the industry of various sectors. It mainly depends upon the types of industry where the lean concepts were implemented. Different methodologies were prepared according to the problems. It will take a separate time for preparing the methodology for the each industry. In order to reduce the time taken for the preparation of a new methodology each time, we are going to prepare a generalized methodology for the implementation of lean concepts. That is starting from approaching the industry to implementation stage and analyzing the impacts. So this will be an as a generalized methodological platform for the companies that are going to implement the lean concepts in the distribution industries sectors in future and it also helps the researchers those who are doing research in the lean implementation platform.
For laying of road in soft or clay soil, sub base strengthening has to be done. A number of synth... more For laying of road in soft or clay soil, sub base strengthening has to be done. A number of synthetics materials are adopted for the same. The CBR or California Bearing Ratio is a measure of the strength of the soil. Replacement of synthetic material with natural coir fiber has increased the CBR value. The various form developed for the applications are non woven, rubberized and needle punched coir
High speed machining (HSM) is a capable technology for drastically increasing productivity and re... more High speed machining (HSM) is a capable technology for drastically increasing productivity and reducing production costs. Development of high-speed spindle technology is strategically critical to the implementation of HSM. Compared to conventional spindles, motorized spindles are equipped with built-in motors for better power transmission and balancing to achieve high-speed operation. However, the built-in motor introduces a great amount of heat into the spindle system as well as additional mass to the spindle shaft, thus complicating its thermo-mechanical-dynamic behaviors. This paper presents a Finite element analysis of dynamic characteristics of high speed motorized spindle using ANSYS. It includes the finite element selection, boundary condition, numerical formulae for finding input parameters to the ANSYS. This analysis is used to extract natural frequencies and mode shapes of the high speed motorized spindle including gyroscopic and centrifugal effects. The dynamic characteristics and modal characteristics of motorized spindles were analyzed experimentally. Numerical analysis was done and results were validated with experimental results.
Micro Factory represents an entirely new approach to design and manufacture which minimizes produ... more Micro Factory represents an entirely new approach to design and manufacture which minimizes production systems to match the size of the parts they produce. The micro-lathe was one of key components in "Micro-factories" claiming "small machine tools for small mechanical parts”. There is an alternative to manufacture micro-components by micro-machine tools and micro-manipulators using conventional mechanical techniques. The machine tools should withstand at higher cutting speeds and operate at high acceleration and deceleration with high quality at lower cost. To achieve high performance, the static stiffness of the machine tool should be increased and moving mass to be reduced. In this study we design and manufacture a prototype of an inexpensive LabVIEW controlled micro-lathe. This will facilitate the micro-machine tool education in India as these activities become active and also replace the conventional Micro-lathe material bed by E-Glass/Epoxy bed to obtain superio...
International Journal of Engineering and Advanced Technology, 2019
Through IoT the cities are envisioned into smart cities. The IoT technology is deployed essential... more Through IoT the cities are envisioned into smart cities. The IoT technology is deployed essentially in prevalence of all the applications and is playing a compelling role in day to day liveliness. The Smart cities integrated with the IoT technology can intensify to unravel the contention of the people. The considerable issues in the cities such as smart home automation, smart parking, smart agriculture, smart street lights and smart environment monitoring are addressed in this article. The smart city is refined with the open source technology. The information accumulated from peculiar devices and sensors is received to the Thing speak server and the representatives will visualize the data and engage in required action to take place. The prime aspiration of this article is to emphasize the obstacles in the smart cities. The features of the smart city are enhanced and give a provision to utilize IoT technology
International Journal of Mechanical Sciences, 2018
In this paper, a numerical study on the melting process of the PCM erythritol in 12,7 mm diameter... more In this paper, a numerical study on the melting process of the PCM erythritol in 12,7 mm diameter spheres subjected to external flow has been carried out. This configuration is analyzed varying the temperature difference between the PCM melting point and the external flow, the Reynolds number as well as the sphere position in the array. The problem is considered two-dimensional in geometry and transient in time. The numerical model here developed consists of the continuity, momentum and energy equations. The results have been initially validated using numerical and experimental data from literature. Afterwards, results of liquid fraction, heat flux and total melting time have been proposed and illustrated. Based on pure observation, a slight difference in the phase change phenomena when comparing different sphere positions in the array has emerged. These phenomena proved to be much more influenced by the external flow temperature and by the Reynolds number. In all cases, at 30% of the total melting time, 50% of the total energy had been absorbed by the PCM. The liquid PCM layer above the solid has a great influence on the heat flux, precisely the more extensive the PCM layer, the lower the heat exchange. The local heat flux value decreases significantly in regions in contact with air and liquid PCM. Contrarily, at the sphere base, where there is solid PCM during the whole process, the local heat flux value is almost constant during the whole melting. Finally, significant differences have emerged when comparing the results referred to the hypothesis here contemplated of uniform heat transfer coefficient and local heat transfer coefficient function of the sphere angle.
annals.fih.upt.ro
In the past, the design of CNC machine tools focused on their functional aspects and was hard to ... more In the past, the design of CNC machine tools focused on their functional aspects and was hard to acquire any resonance with customers. Nowadays, despite the needs of low price, capabilities withstand at higher cutting speeds and operate at high acceleration and deceleration with high quality machine, many customers request good-looking machine. Regarding this, our study aims to provide various form designs of machine tool structure with the help of structural modifications made in CNC machine tool bed. After the lightening effect was verified by finite element simulation, scale-down models of an original bed and vertical ribs with hollow bed models were fabricated using rapid prototyping method and tested. The dynamic characteristics of those different form designs of the bed were analyzed experimentally. Numerical analysis was done and results were validated with experimental results. Results indicated that the cross and horizontal rib with hollow bed can increase the specific stiffness by 8% with 4% weight reduction and its dynamic performances is also better with increases in the first natural frequencies. The modified design is effective in improving the static and dynamic structural performances of high speed machine tools.
Melatonin Research, 2021
Nocturnal melatonin secretion is important for preservation of ß-cell mass and function. Knowing ... more Nocturnal melatonin secretion is important for preservation of ß-cell mass and function. Knowing that type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder characterized by hyperglycemia caused by the elevated resistance of peripheral tissues to insulin, reduction in pineal melatonin and disturbances of insulin secretion by pancreatic ß-cells. In this context, exercise is considered one of the most valuable non-pharmacological approaches for treatment of T2DM. Considering the beneficial role of melatonin on glycemic metabolism in physical exercise, we investigated the effects of moderate-intensity aerobic exercise plus melatonin on glycemic homeostasis, the morphology and architecture of pancreas in spontaneous T2DM animals [Goto-Kakizaki (GK) rats]. The results confirmed that melatonin alone reduced the mass of epididymal white adipose tissue (WAT); however, only the combination of melatonin and physical exercise significantly reduced caloric intake, body weight, WAT and...
Applied Energy, 2016
h i g h l i g h t s A ground-coupled desiccant assisted air conditioning system is evaluated expe... more h i g h l i g h t s A ground-coupled desiccant assisted air conditioning system is evaluated experimentally. The evaluation is carried out for steady state operation and the cooling period as a whole. The suitability of the system to provide comfort conditions is examined demonstrated. Energy comparisons with other airconditioning systems are performed. The performance of the borehole heat exchangers for cooling is evaluated.
Materials
Aerospace alloys with reduced wall thickness but possessing higher hardness, good tensile strengt... more Aerospace alloys with reduced wall thickness but possessing higher hardness, good tensile strength and reasonable corrosion resistance are essential in manufacturing of structures such as fuselage. In this work, friction stir welding has been carried out on such an aerospace aluminum alloy AA8090 T87 which contains 2.3% lithium. Tool rotational speed of 900 rpm and traverse speeds of 90 mm/min., 110 mm/min. are the welding parameters. Hardness analysis, surface roughness analysis and corrosion analysis are conducted to analyze the suitability of the joint for the intended application. The samples were corrosion tested in acid alkali solution and they resulted in the formation of pits of varying levels which indicate the extent of surface degradation. Hardness of the samples was measured after corrosion analysis to observe the changes. The analysis suggests that the change in tool traverse speed transformed the corrosion behavior of the joint and affected both the hardness and surfac...
Impact of SiC Particle Incorporated Dielectric Medium on Machining Performance of AA7050/SiC/Al2O3 Hybrid Composites
ECS Journal of Solid State Science and Technology
The component produced with best surface quality increases the life time of the product and with ... more The component produced with best surface quality increases the life time of the product and with the objective of attaining it. AA7050 hybrid composites was processed using the electric discharge machining (EDM) technique. Composites with varying weight percentage of reinforced particles were manufactured using the stir casting technique. SiC and Al2O3 with an average particles size of 5 μm was used as reinforcement. EDM experimentation was conducted on the composites by varying pulse on time (Ton), current (A), powder concentration, and reinforcement weight percentage and the experimental runs were designed using Taguchi mixed orthogonal array, Material removal rate (MRR), tool wear rate (TWR), surface roughness (Ra), and machined surface hardness were recorded as response. When SiC particles were added into the dielectric fluid, MRR increased. The generated heat was uniformly spread throughout the machined surface due to the low thermal conductivity of SiC particles. TWR for compo...
A novel and prediction approach of sheep wool reinforced polyester composites: Surface qualities and hybrid modeling
Polymer Composites
Lean Manufacturing over the Firms of Various Platforms: A Literature Review
CERN European Organization for Nuclear Research - Zenodo, Feb 13, 2022
Lean manufacturing is a technique which eliminates the wastes produces within the firms of variou... more Lean manufacturing is a technique which eliminates the wastes produces within the firms of various sectors. It contains seven different types of wastes like transportation, inventory, motion, waiting, overproduction, over processing and defects. This paper reveals the overview of lean manufacturing and its implementation over the firms of various sectors. Furthermore, it reveals the lean manufacturing tools, barriers and performance measures occur while implementation
The Unification Coalition for Lean management and Industry 4.0
Journal of the Gujarat Research Society, Oct 18, 2019
International research journal of automotive technology, Mar 30, 2018
The power cuts are day-today problem in India and the only relief from them is generator which ei... more The power cuts are day-today problem in India and the only relief from them is generator which either runs on petrol, diesel or kerosene. The generators prove to be quite expensive in the long run and also they consume large amount of conventional fuels of which are in great shortage. To help the research of unconventional fuels Biogas is successfully tapped for small-scale generation of electricity. Biogas system are those that takes organic material (feedstock) into an airtight tank, where bacteria breakdown the material and release biogas-a mixture of mainly methane with some carbon dioxide. The current practice of using low calorie inputs like cattle-dung, distillery effluent, municipal solid waste or sewerage, in biogas plants, which makes methane generation highly inefficient. To rectify this skewed problem approach is made to make a Compact Biogas Plant which uses starchy or sugary feedstock (waste grain flour, spoilt grain, over-ripped or misshapen fruit, non-edible seeds, fruits and rhizomes, kitchen waste, leftover food, etc.) and then subject it to the Compact Biogas plant for methane generation. As cow dung or animal dung (1kg.) contain 18% to 20% of solid matter and remaining is volatile matter. Now kitchen waste (100% solid), is used as an input for Compact Biogas plant and its output is very high, so the Biogas (Methane) formation is more in case of kitchen waste as compared to cow dung. The present paper provides a solution to fuel problems, have come up with a Biogas Run Generator generated from Kitchen Waste. S. I. Engine runs completely on Biogas, Conversion of S.I. Engine for operation on biogas includes position for entry of biogas. Throttling of intake air, advancing ignition timing. Biogas is admitted to a stationary S.I. Engine through the intake manifold and air flow control valve is provided for throttling the intake air, In this case the intake air is required to be manually throttling in the initial stage. The size of biogas plant is greatly reduced and requires only 1mx1m space to generate 650W power for one and half hour with 1Kg of kitchen waste. The generator has not only a very low running cost but also has excellent fuel efficiency. It would be ideal to make use of kitchen waste. This signifies the utility of Biogas Run Generator.
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Papers by Dr Syath Abuthakeer S - PSGCT