INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET)最新文献

{"title":"A LITHOPHANE MODEL MAKING PROCESS TO 3D PRINTERS","authors":"Siddavatam Rammohan Reddy","doi":"10.31224/osf.io/e8ubh","DOIUrl":"https://doi.org/10.31224/osf.io/e8ubh","url":null,"abstract":"This paper focuses on to convert photographs into embossed 3D models and then bring them to life using a 3D printer. A Lithophane is a 3-dimensional generation of a 2-dimensional image and 3D representation of a photo can be seen only when it is illuminated from behind. Turning images into 3D objects give us more feeling and literally adds a new dimension. The lithophane can be manufactured by the way of an automated additive manufacturing process, such as 3-D printing. lithophanes are a simple way to enhance your favourite photos. 3D printed photos also known as 3D Printed lithophanes, are an extremely unique and creative application. The process adopted in lithophane is FDM technology, in which different the materials like PLA (polylactic acid), ABS (acrylonitrile butadiene styrene), etc. By heating the filament material to its melting point and it is deposited layer by layer. Combination of many layers will give us a final 3D Printed model.","PeriodicalId":247963,"journal":{"name":"INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130614126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EXPERIMENTAL STUDIES ON LAUNCH DYNAMICS OF SLANT LAUNCHED SURFACE TO AIR FLIGHT VEHICLE","authors":"G. Chandramouli, P. Reddy, P. Laxminarayana, Mondeep Borthakur","doi":"10.31224/osf.io/exh3t","DOIUrl":"https://doi.org/10.31224/osf.io/exh3t","url":null,"abstract":"Surface to air flight vehicles are launched at low slant angles to intercept and neutralize low flying attacking enemy aerial targets like fighter aircrafts, helicopters which are on cruise missions. These flight vehicles are generally housed in hollow launch canisters which are used for storage, transportation and launching through mobile launchers. The lateral signature of launch canister is chosen such a way that more number of canisters can be accommodated per one launcher. To accommodate the flight vehicle in launch canister, it is accordingly configured with foldable wings and fins. New designs of flight vehicle, canister and launcher system need to be verified for all the interfaces and the controllability of flight vehicle when it clears the canister. While coming out of canister at low elevation launch angles, the flight vehicle starts deviating from its intended trajectory due to the combination of gravitational force, thrust misalignments, aerodynamic forces, low initial thrust, lateral shift of centre of mass, deployment forces of wing and fin etc. To record actual launch dispersions and to remove any hidden uncertainties in new designs, a live firing with a full scale short duration flight vehicle was undertaken. A propulsion system was specifically designed to function for a small duration simulating the actual thrust time profile of that of the full scale rocket motor system for that initial duration. One short duration rocket motor system was static tested to verify the design parameters and another one was integrated with the rest of the actual flight hardware thus realizing in to a full scale short duration flight vehicle. The geometry, length, weight and centre of mass, launch shoe interfaces etc of short duration flight vehicle was ensured as that of actual full scale flight vehicle. Actual launcher, actual canister and short duration flight vehicle were appropriately instrumented. Parameters like vibration, shock, accelerations, body rates, pressure, temperature, strain, acoustic etc. were recorded in real time during the live firing. The motion of short duration flight vehicle, its attitude, unfolding of wings, unfolding of fins etc were recorded through high speed video sensors. Variations of parameters recorded in actual dynamic conditions were compared with estimated parameters. Some useful inputs have been obtained for improving the design for low elevation launch angle missions. The effects of these improvements have been subsequently verified through simulations and full scale live flight tests.","PeriodicalId":247963,"journal":{"name":"INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125032694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A REVIEW ON SOLAR COOLING TECHNOLOGIES","authors":"Divik Mathur","doi":"10.31224/osf.io/pbd5g","DOIUrl":"https://doi.org/10.31224/osf.io/pbd5g","url":null,"abstract":"Solar energy is a renewable and efficacious source of energy which is most fundamentally used in recent and evolving technologies. Solar Cooling is one such technology which uses the energy produced from the solar photo-voltaic cell to generate cooling which further can be utilized for refrigeration and air conditioning applications. Developments in the field of solar-powered cooling systems have increased the scope of future research and global usage. This paper provides a review and analysis of different solar cooling technologies that can be implemented to generate a cooling effect in various applications. In this paper, Solar Thermal and Electrical technologies are discussed with different attributes which can be utilised for comparison, reflecting the advantages and correct usage for each technology.","PeriodicalId":247963,"journal":{"name":"INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130277081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DIESEL ENGINE PERFORMANCE, EMISSION AND COMBUSTION CHARACTERISTICS WITH OPTIMIZED BLEND OF B25 METHYL ESTER OF MANGO SEED OIL","authors":"K. Vijayaraj, A. Ganesan, C. Saravanan","doi":"10.31224/osf.io/ya4c9","DOIUrl":"https://doi.org/10.31224/osf.io/ya4c9","url":null,"abstract":"Oil based fuels worldwide have not just brought about the speedy consumption of available energy sources, yet have likewise caused extreme air pollution. The quests for a substitute fuel has prompted numerous findings because of which wide assortment of alternative fuels are available now. The current investigations have revealed the utilization of vegetable oils for engines as an option for diesel fuel. Since there is a restriction in using vegetable oils in diesel engines because of their high viscosity and low volatility. In the current work, mango seed oil is converted into respective methyl ester by transesterification process. Tests are conducted using different blends of methyl ester of mango seed oil with diesel in a diesel engine. The investigation consequences demonstrated that the MEMSO biodiesel has comparable qualities to that of diesel. The brake thermal efficiency and smoke are seen to be lower in case of MEMSO biodiesel blends than diesel. Then again, BSFC and NOx of MEMSO biodiesel blends are seen as higher than diesel. It is observed that the combustion characteristics of methyl ester of mango seed oil blends seem to be similar with that of the diesel. From this investigation, it is concluded that B25 as optimized blend and could be used as an alternative fuel in a diesel engine with no engine modifications","PeriodicalId":247963,"journal":{"name":"INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121210895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"AUTOMOTIVE SERVICE INDUSTRY NEEDS OF AUTOTRONIC COMPETENCIES AND THOSE PREPARED BY THE EDUCATION","authors":"Wagiran, Yudha Ari Purnama","doi":"10.31224/osf.io/k2xc9","DOIUrl":"https://doi.org/10.31224/osf.io/k2xc9","url":null,"abstract":"This study aims to formulate competencies in autotronics specifically in the cluster of Vehicle Control System (VCS) needed by the automotive service industry (ASI) and its relevance to those taught at Vocational Schools (VSs). Employing a survey method, this research is a quantitative study involving owners, managers, heads of workshops, and service managers of 10 ASI and educators from VSs offering autotronic expertise competencies. Data were collected through questionnaires, structured interviews, observation, and documentation study, and were analyzed descriptively. The results reveal that, of the 30 VCS competency units (CUs), 4 are both needed by ASI and taught at VSs, 11 are required by ASI but not studied at VSs, another CU is not needed by ASI but introduced at VSs, and the other 14 CUs are neither required by ASI nor trained at VSs","PeriodicalId":247963,"journal":{"name":"INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129992494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DESIGN AND CFD ANALYSIS OF CEILING FAN FOR REGULAR ROOM SIZE","authors":"Pushpesh Singh, G. Patil","doi":"10.31224/osf.io/8c2pt","DOIUrl":"https://doi.org/10.31224/osf.io/8c2pt","url":null,"abstract":"Fans are playing a major role around the globe for effective and pocket friendly cooling, especially in the region of Asia where humidity is high. Thermal comfort being one of the most important factors for improvement in working environment for better quality of work. Moving of air around the body helps sweat evaporation and makes body feel comfortable. Mixing of air from top to bottom of the area so as to neutralize the change in temperature is done by fans effectively than any other means. Destratification of air is the biggest problem faced in any enclosed area which can be rectified by using fans. CFD Analysis is performed on the designed ceiling fan to analyze the airflow around the area of interest","PeriodicalId":247963,"journal":{"name":"INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116133091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SIMULATION STUDIES ON MICROWAVE ASSISTED DRYING OF BIOMASS WITH SPECIAL ATTENTION TO THE SIZE OF BIOMASS","authors":"Varinder Singh, N. Saluja, A. Singh","doi":"10.31224/osf.io/qf7xd","DOIUrl":"https://doi.org/10.31224/osf.io/qf7xd","url":null,"abstract":"The crop-waste is available in abundant to generate energy. The energy conversion process involve production of biofuel from crop-waste. This paper considers the conversion of rice straw to energy. The conversion involve the preprocessing of rice straw which includes drying and its conversion to powder form. This paper proposes the microwave assisted drying process for rice straw. The single strand of rice straw is considered in the paper. The Multiphysics simulation is performed to understand the heat generation and heat-transfer rate with variation in the size of rice straw. The proposed process involves the cutting of rice straw to specific sizes. The rice straw size plays an important role in absorbing microwave energy. The heating pattern depends on the mode of transverse electric field interacting with specified size of rice straw. The different modes getting excited in the rice straw depends on its size. It is observed in this paper that the large size of rice straw help in achieving multiple modes in a single strand of rice straw. Hence, it results in optimized microwave process to achieve the uniform heating in rice straw. The cutting of rice straw before microwave processing requires the rice straw to size between 8 cm to 12 cm.","PeriodicalId":247963,"journal":{"name":"INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121073222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"COMPARISON OF MECHANICAL AND MICROSTRUCTURAL EXAMINATION OF AL7075 COMPOSITES REINFORCED WITH MICRO AND NANO B4C","authors":"K. Singh, A. Chauhan","doi":"10.31224/osf.io/reygs","DOIUrl":"https://doi.org/10.31224/osf.io/reygs","url":null,"abstract":"Due to the demand for lightweight materials in the field of automobiles, aeronautics and some other application, there is a need to develop lightweight materials. For the last few decades, aluminum matrix composites are being developed in order to meet out the demand of the above-mentioned industries. aluminum the above, lightweight material in the form of composites of B4C reinforced in Al7075 alloy is considered for the present investigation. The composite was produced using the stir casting method. In this investigation, the micro and nano B4C particles were used as reinforcements. The fabricated composites were characterized for microstructure and mechanical properties. From the microstructural examination, it was observed that 12% of B4C nanocomposites was having fine microstructure as compared to others. The hardness and strength were found to be maximum for 12 % B4C nanocomposites which impact strength was lowest for 12% micro composites.","PeriodicalId":247963,"journal":{"name":"INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134125733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE IMPACT OF SHARE CROPPING SYSTEM ON THE PRODUCTIVITY OF RICE FARMING IN CENTRAL JAVA","authors":"L. R. Waluyati, Jamhari Anon, A. P. Siregar","doi":"10.31224/osf.io/n5fjy","DOIUrl":"https://doi.org/10.31224/osf.io/n5fjy","url":null,"abstract":"The problem in rice production in Java is the decrease of agricultural land area, and the increase of old farmers, the share cropping system is a system of land tenure distribution that is mostly carried out in Java. The research was conducted in Klaten Regency as the centre for rice production in Central Java. This study aims to determine the management of rice farming using a share cropping system and factors that affect its productivity. The research involved 60 farmers as the research samples who were collected using multiple linear regression methods. The analysis revealed that the number of tenant farmers amounted to 38% with a relatively younger age and a land area of 0.7 ha. Economically, they live a decent life with revenue per cost 1.6 and profit per cost C 0.25, and a productivity level of 6.3 tons/ha, which is higher than the landowners are. The share cropping system in rice farming in Klaten Regency is a system of land use and labor that provides good incentives for the tenant","PeriodicalId":247963,"journal":{"name":"INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131124195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ENHANCEMENT OF EFFICACY AND HEAT TRANSFER CHARACTERISTICS OF TIO2 NANO FLUIDS UNDER TURBULENT FLOW CONDITIONS IN PARABOLIC TROUGH SOLAR COLLECTOR","authors":"K. Kumar, T. Rao, M.Srinivas, K. Reddy","doi":"10.31224/osf.io/7srx9","DOIUrl":"https://doi.org/10.31224/osf.io/7srx9","url":null,"abstract":"The efficacy of a parabolic trough solar collector (PTSC) was improved by using TiO2/DI-H2O (De-Ionized water) nanofluid. Working samples consisting of nanofluids with concentrations of 0.05%, 0.1%, 0.2%, 0.3% and 0.5% were compared with deionized water (the base fluid) at different flow rates under turbulent flow regimes (2850 ˂Re ˂ 7440). The experiments were designed as per ASHRAE 93 (2010) standards. Heat transfer and the flow characteristics of nanofluids through the collector were studied, and empirical correlations were developed in terms of the Nusselt number, friction factor, and performance index. The convective heat transfer coefficient was improved up to 23.84% by using TiO2 nanofluids instead of the base fluid. It was found that TiO2 nanofluid with a volume fraction of 0.3% (at a mass flow rate of 0.0689 kg/s) will provide the maximum efficiency enhancement in the PTSC (9.66% higher than the water-based collector). Consequently, the absorbed energy parameter was found to be 10.3% greater than that of the base fluid.","PeriodicalId":247963,"journal":{"name":"INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116619512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}