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European Journal of Technic最新文献

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Contagious effect of COVID-19 Pandemic by High Speed Train Transportation in Turkey 土耳其高铁运输对COVID-19大流行的传染效应
European Journal of Technic Pub Date : 2022-06-30 DOI: 10.36222/ejt.1099728
Hümeyra BOLAKAR TOSUN
{"title":"Contagious effect of COVID-19 Pandemic by High Speed Train Transportation in Turkey","authors":"Hümeyra BOLAKAR TOSUN","doi":"10.36222/ejt.1099728","DOIUrl":"https://doi.org/10.36222/ejt.1099728","url":null,"abstract":"The transportation sector was affected by the covid 19 pandemic all over the world. In this study, the relationship between the passenger density at high-speed train points and the spread of the covid 19 epidemic was examined. In addition, the temporal situation of the pandemic was examined by evaluating based on a year and month. In this context, high-speed train passenger movement is mathematically modelled using regression analysis. Strong relation between number of patient and number of passenger. As a result, it was observed that the number of patients increased as the number of passengers increased. In order to limit the epidemic, it may be recommended to increase measures especially in transportation centres.","PeriodicalId":413929,"journal":{"name":"European Journal of Technic","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130675136","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}
引用次数: 0
Comparative Modelling and Experimental Verification of a PMSM Drive System 永磁同步电机驱动系统的对比建模与实验验证
European Journal of Technic Pub Date : 2022-06-26 DOI: 10.36222/ejt.1101838
G. Boztas
{"title":"Comparative Modelling and Experimental Verification of a PMSM Drive System","authors":"G. Boztas","doi":"10.36222/ejt.1101838","DOIUrl":"https://doi.org/10.36222/ejt.1101838","url":null,"abstract":"This paper presents a comparative study on two simulation and an experimental models for a Permanent Magnet Synchronous Motor (PMSM) drive system. A realistic modelling and simulation of a PMSM drive system is very useful before developing an experimental study. In particular, analyzing the performance of the motor drive and control algorithm in a simulation environment provides many advantages. The motor and drive system can be tested by using a simulation environment with various realistic scenarios in order to reduce testing costs and time span. Therefore, a comparative simulation study was performed in this study to show the simulation results similarity with real application results. Three PMSM drive systems were modelled by using MATLAB environment based on SimPowerSystems, Simscape Electrical, and based C-language. All models and experimental system were operated under the same conditions. These models were compared with each other and verified with an experimental system. The waveforms were analyzed comparatively such as current, speed, mechanical position of the motor.","PeriodicalId":413929,"journal":{"name":"European Journal of Technic","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122605316","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}
引用次数: 1
Structural Controls of High-Temperature and Deep Geothermal Systems Associated with Detachment Fault 与滑脱断裂相关的高温深层地热系统的构造控制
European Journal of Technic Pub Date : 2022-06-26 DOI: 10.36222/ejt.955186
A. Özdemir, Yildiray Palabiyik, Fahri Arabaci
{"title":"Structural Controls of High-Temperature and Deep Geothermal Systems Associated with Detachment Fault","authors":"A. Özdemir, Yildiray Palabiyik, Fahri Arabaci","doi":"10.36222/ejt.955186","DOIUrl":"https://doi.org/10.36222/ejt.955186","url":null,"abstract":"In this study, the structural controls of a high-temperature system (188 to 287 oC) associated with the detachment fault in Gediz Graben generating approximately half of this electricity generation in Turkey which is in the top five of the world in the generation of electricity from geothermal resources are examined. \u0000The high-temperature geothermal reservoirs associated with detachment fault in the study area have formed along the normal faults nearly in E-W orientation and in intensely fractured rocks in a structurally complex manner associated with transfer faults approximately in N-S orientation. Generally, it has been determined that the reservoirs are closely located to strike-slip faults intersecting, overlapping, and/or terminated with Quaternary transfer faults.","PeriodicalId":413929,"journal":{"name":"European Journal of Technic","volume":"18 S24","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132478794","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}
引用次数: 0
EXAMINING THE CARSHARING SYSTEM IN TERMS OF URBAN TRANSPORTATION 从城市交通的角度研究汽车共享系统
European Journal of Technic Pub Date : 2022-06-26 DOI: 10.36222/ejt.793458
Emre Kuşkapan, M. Çodur
{"title":"EXAMINING THE CARSHARING SYSTEM IN TERMS OF URBAN TRANSPORTATION","authors":"Emre Kuşkapan, M. Çodur","doi":"10.36222/ejt.793458","DOIUrl":"https://doi.org/10.36222/ejt.793458","url":null,"abstract":"With the increasing population in the world, individual vehicle ownership is increasing day by day. The increase in individual vehicle ownership causes heavy traffic jams in the city centers. In addition to traffic congestion, noise pollution, harmful gas emission, parking lot problems also increase. Besides, the fact that most of the vehicles use petroleum derivatives, which are a depleted energy source, pose big problems for the economy. In this context, various studies are carried out to reduce the use of individual vehicles and to prevent the mentioned problems. One of these studies is the carsharing system. In this study, the applicability of the vehicle sharing system was investigated by surveys of Erzurum Metropolitan Municipality personnel. The city is divided into certain regions, taking into account the locations of individuals' homes. Later, the carsharing model was created with the mobile application designed for individuals living in the region. Monthly total economic gain and savings per individual were calculated in the analysis made as a result of the model. Thanks to the study, it has been revealed that the carsharing system within the institutions provides feasibility and many advantages.","PeriodicalId":413929,"journal":{"name":"European Journal of Technic","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134195730","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}
引用次数: 0
Variations in the Concentration of Air Pollutants due to the COVID-19 Lockdown in Istanbul, Turkey 由于新冠肺炎封锁，土耳其伊斯坦布尔空气污染物浓度的变化
European Journal of Technic Pub Date : 2022-05-04 DOI: 10.36222/ejt.1073950
A. Akan
{"title":"Variations in the Concentration of Air Pollutants due to the COVID-19 Lockdown in Istanbul, Turkey","authors":"A. Akan","doi":"10.36222/ejt.1073950","DOIUrl":"https://doi.org/10.36222/ejt.1073950","url":null,"abstract":"Countries have implemented partial or full quarantine practices to reduce the effects of the COVID-19 pandemic, which severely affects the whole world and controls the increase in the number of cases and deaths. Studies have observed improvements in air pollution due to the reduction in emissions from traffic and industrial processes during lockdown periods. In this study, the effects of quarantine activities on air quality in the pre-COVID-19 period and during the COVID-19 pandemic, both in 2020 and 2021, were examined through the data obtained from the air quality monitoring stations located in the three districts with the highest traffic density in Istanbul, the most populated city of Turkey. \u0000 \u0000Based on the findings obtained from the study, it can be concluded that lockdown applications contributed to the reduction of air pollution in the examined regions. In addition, another finding is that there is a positive correlation between air quality parameters. It is expected that the results of the study will lead the decision-makers in the areas of dissemination of renewable energy systems instead of energy generation from coal-fired power plants and the widespread use of electric vehicles instead of diesel-fueled vehicles, for many countries that have committed to net-zero carbon emissions within the scope of the Paris Agreement and the European Green Deal.","PeriodicalId":413929,"journal":{"name":"European Journal of Technic","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128112556","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}
引用次数: 0
Investigation of Mechanical Properties of Composite Al6061/Ni-Al2O3 Produced by Stir Casting Process 搅拌铸造Al6061/Ni-Al2O3复合材料力学性能研究
European Journal of Technic Pub Date : 2022-05-01 DOI: 10.36222/ejt.1049835
O. Adiyaman
{"title":"Investigation of Mechanical Properties of Composite Al6061/Ni-Al2O3 Produced by Stir Casting Process","authors":"O. Adiyaman","doi":"10.36222/ejt.1049835","DOIUrl":"https://doi.org/10.36222/ejt.1049835","url":null,"abstract":"Composites are widely used material types today, and it is known that matrices and additives in composites improve the mechanical properties of the material. In this study, Al6061 matrix and Ni-Al2O3 reinforced composite material was produced by stir casting method and the effect of Ni- Al2O3 mixture reinforcement on the hardness and tensile properties of the produced composite material was investigated. The determination of the mechanical properties of the samples obtained after the casting process was determined by the results of microhardness analysis and tensile test, and the internal structure of the material was examined by XRD analysis. According to the results of XRD analysis, it was determined that Ni and Al2O3 phases were formed together with the matrix element Al. The results of the tensile analyzes showed that the amount of strain in the composite material changed depending on the ratio of the reinforcement element, and the highest strain value occurred in the Ni-Al2O3 reinforced sample with Al matrix. However, it was observed that the brittle fracture mechanism was effective in all samples. While the highest microhardness value was obtained in sample 4 (Al6061+ (mass. %15) Ni+ Al2O3) with 89.6 HV0.5 value, the lowest microhardness value was obtained from pure Al sample with 66.7 HV0.5 value. As a result, it was determined that the Ni-Al2O3 reinforcement element increased the microhardness value in the Al matrix composite material.","PeriodicalId":413929,"journal":{"name":"European Journal of Technic","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126140165","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}
引用次数: 1
Dynamic Performance Comparison of the Different PV Modules with Real Data 基于真实数据的不同光伏组件动态性能比较
European Journal of Technic Pub Date : 2022-04-21 DOI: 10.36222/ejt.1029684
O. Elma
{"title":"Dynamic Performance Comparison of the Different PV Modules with Real Data","authors":"O. Elma","doi":"10.36222/ejt.1029684","DOIUrl":"https://doi.org/10.36222/ejt.1029684","url":null,"abstract":"","PeriodicalId":413929,"journal":{"name":"European Journal of Technic","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126188274","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}
引用次数: 0
Investigation of Power Consumption in the Machining of S960QL Steel by Finite Elements Method 用有限元法研究S960QL钢加工能耗
European Journal of Technic Pub Date : 2022-03-28 DOI: 10.36222/ejt.1066472
Rüstem Binali, S. Yaldiz, Suleyman Neseli
{"title":"Investigation of Power Consumption in the Machining of S960QL Steel by Finite Elements Method","authors":"Rüstem Binali, S. Yaldiz, Suleyman Neseli","doi":"10.36222/ejt.1066472","DOIUrl":"https://doi.org/10.36222/ejt.1066472","url":null,"abstract":"Armor steels have good strength and corrosion resistance; however, due to their difficult machinability, high power consumption occurs. High power consumption increases the cost in machinability studies. Therefore, minimizing power consumption is important for sustainable and cleaner production. In order to minimize power consumption during machining, factors such as workpiece material, cutting tool material and geometry, machining conditions and cutting parameters must be compatible with each other. For this reason, power consumption modeling was carried out in the milling of S960QL structural steel material according to the finite elements method, depending on the cutting parameters. In this context, simulation processes were carried out at three levels for each factor: cutting speed, lateral depth, axial depth and feed rate. The most effective parameter in power consumption was the axial deep of cut. There was a 476% change between the highest and lowest power consumption. It is concluded that finite element modeling is feasible in order to determine the effect of processing parameters on power consumption.","PeriodicalId":413929,"journal":{"name":"European Journal of Technic","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131025625","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}
引用次数: 4
Review of Traction System, Energy Efficiency and Electrical Design of Automated Guided Vehicles in Automotive Industry 汽车工业自动导引车牵引系统、能效及电气设计综述
European Journal of Technic Pub Date : 2022-03-17 DOI: 10.36222/ejt.1002554
M. Karamuk, I. Savci, H.I. Ocakli
{"title":"Review of Traction System, Energy Efficiency and Electrical Design of Automated Guided Vehicles in Automotive Industry","authors":"M. Karamuk, I. Savci, H.I. Ocakli","doi":"10.36222/ejt.1002554","DOIUrl":"https://doi.org/10.36222/ejt.1002554","url":null,"abstract":"","PeriodicalId":413929,"journal":{"name":"European Journal of Technic","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128234070","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}
引用次数: 0
Effects of Biodiesel Fuels Produced from Vegetable Oil and Waste Animal Fat on the Characteristics of a TDI Diesel Engine 植物油和废动物脂肪制备生物柴油对TDI柴油机性能的影响
European Journal of Technic Pub Date : 2022-01-05 DOI: 10.36222/ejt.1013758
Ertan Alptekin, H. Sanli, M. Çanakçı
{"title":"Effects of Biodiesel Fuels Produced from Vegetable Oil and Waste Animal Fat on the Characteristics of a TDI Diesel Engine","authors":"Ertan Alptekin, H. Sanli, M. Çanakçı","doi":"10.36222/ejt.1013758","DOIUrl":"https://doi.org/10.36222/ejt.1013758","url":null,"abstract":"In this study, four different biodiesel fuels obtained from corn oil, safflower-rapeseed oil mixture (50%-50% v/v), waste chicken fat, and waste fleshing oil were tested in a six-cylinder, water-cooled, TDI diesel engine. Vegetable oil and waste animal fat origin biodiesel fuels’ effects on the performance, injection, combustion and emission characteristics of test engine were compared with each other and petroleum-based diesel fuel as reference fuel. Biodiesel fuels (regardless of their feedstock) increased in-cylinder gas pressure, brake specific fuel consumption, and NOx emissions while decreased THC and CO emissions compared to pure diesel fuel. In comparison to petro-diesel, the start of fuel injection timing advanced but the end of fuel injection timing retarded with biodiesels. In addition, comparatively higher fuel injection pressure values were attained with all biodiesel fuels. Waste animal fat and vegetable oil origin biodiesel fuels showed similar in-cylinder gas pressures, fuel injection characteristics and brake specific fuel consumption values. However, CO emissions of vegetable oil-based biodiesel fuels were lower and NOx emissions were higher than those of waste animal fat-based biodiesels.","PeriodicalId":413929,"journal":{"name":"European Journal of Technic","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127578824","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}
引用次数: 0
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