Pub Date : 2019-05-01DOI: 10.13189/UJME.2019.070302
Mohammadmahdi Khamsi
Today Unmanned aerial vehicles (UAV) have found widespread use and may have been using them to capture various events or take photographs of operational areas; but the fact is that UAVs or quadcopters, which are some of these flights, are still at the beginning of their journey and can be future applications will be more widely used. Given the geographical situation and the current situation in the world, the country needs to step up with the world in order to strengthen the defense forces. One of the tools that have been used in recent decades to other tools due to their characteristics and their unique features, including the absence of human casualties, the study and more precise missions, and ... are of interest to many countries, including our country, are unmanned aerial vehicles. Many researchers have been carried out on these devices today. In the same way, our researchers in our country have done a lot of researches on this device in recent years and tried to make these birds with the least cost and with the highest efficiency. This paper also attempts to analyze the flights with the ability to carry the camera. At first, its components, including wings, body, tail, and landing gear, are optimally designed and then aerodynamically and instrumentally analyzed, so that this research used to build these flights species in the future.
{"title":"Design and Analysis of an Unmanned Aerial Vehicle Capable of Carrying the Camera","authors":"Mohammadmahdi Khamsi","doi":"10.13189/UJME.2019.070302","DOIUrl":"https://doi.org/10.13189/UJME.2019.070302","url":null,"abstract":"Today Unmanned aerial vehicles (UAV) have found widespread use and may have been using them to capture various events or take photographs of operational areas; but the fact is that UAVs or quadcopters, which are some of these flights, are still at the beginning of their journey and can be future applications will be more widely used. Given the geographical situation and the current situation in the world, the country needs to step up with the world in order to strengthen the defense forces. One of the tools that have been used in recent decades to other tools due to their characteristics and their unique features, including the absence of human casualties, the study and more precise missions, and ... are of interest to many countries, including our country, are unmanned aerial vehicles. Many researchers have been carried out on these devices today. In the same way, our researchers in our country have done a lot of researches on this device in recent years and tried to make these birds with the least cost and with the highest efficiency. This paper also attempts to analyze the flights with the ability to carry the camera. At first, its components, including wings, body, tail, and landing gear, are optimally designed and then aerodynamically and instrumentally analyzed, so that this research used to build these flights species in the future.","PeriodicalId":275027,"journal":{"name":"Universal Journal of Mechanical Engineering","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120901552","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}
Pub Date : 2019-05-01DOI: 10.13189/UJME.2019.071302
Nia Nuraeni Suryaman, Udin Komaruddin, A. Hutomo, Martoni
Uniformity of temperature in a room is often encountered in various purposes. This study presents the results of modeling the temperature and airflow in the chicken coop. A problem to be solved in this research is how to design the chicken coop in order to produce temperature uniformity. Thus, the objectives are to build a chicken coop dimensional model of 96x12x2 m with a capacity of 15,500 chicks. Modeling results analysis using CFD (Computational Fluid Dynamics). The stage of completion to meet the above objectives is by measuring the dimensions of the chicken coop. The next data to be obtained are temperature and air velocity to determine the boundary conditions. Some of the above parameters are used to validate chicken coop design. Modeling conducted using CFD methods with temperature and air velocity as boundary conditions. The modeling results showed that the average temperature in the chicken coop is adequate as an ideal temperature standard for chicken coop. Temperature uniformity is obtained by variation of the exhaust opening 4.
{"title":"Numerical Study of Distribution Temperature and Air Flow Velocity at Closed Type Chicken Coop for Capacity of 15,500 Chicks with Opening 1 Inlet and 4 Exhaust","authors":"Nia Nuraeni Suryaman, Udin Komaruddin, A. Hutomo, Martoni","doi":"10.13189/UJME.2019.071302","DOIUrl":"https://doi.org/10.13189/UJME.2019.071302","url":null,"abstract":"Uniformity of temperature in a room is often encountered in various purposes. This study presents the results of modeling the temperature and airflow in the chicken coop. A problem to be solved in this research is how to design the chicken coop in order to produce temperature uniformity. Thus, the objectives are to build a chicken coop dimensional model of 96x12x2 m with a capacity of 15,500 chicks. Modeling results analysis using CFD (Computational Fluid Dynamics). The stage of completion to meet the above objectives is by measuring the dimensions of the chicken coop. The next data to be obtained are temperature and air velocity to determine the boundary conditions. Some of the above parameters are used to validate chicken coop design. Modeling conducted using CFD methods with temperature and air velocity as boundary conditions. The modeling results showed that the average temperature in the chicken coop is adequate as an ideal temperature standard for chicken coop. Temperature uniformity is obtained by variation of the exhaust opening 4.","PeriodicalId":275027,"journal":{"name":"Universal Journal of Mechanical Engineering","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124136489","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}
Pub Date : 2019-05-01DOI: 10.13189/UJME.2019.071303
U. Komarudin
Fuel system, type of fuel and type of spark plug, are the determining variables in producing exhaust gas in motorized vehicles. Pollutants produced by motor vehicle emissions include Carbon Monoxide (CO), carbon dioxide (CO2), Sulfur Dioxide (SO2), Nitrogen Monoxide (NOX), Hydrocarbons (HC), Lead Particles (PB), smoke and ash. These pollutants can cause interference in humans, animals, plants and other objects. The study was conducted to determine the effect of the main variables of the fuel system variables (Carburetor and EFI), type of fuel (Premium octane 88 and Pertamax octane 92) and the type of spark plugs (standard spark plugs and spark plugs Iridium) on CO gas exhaust. The test tool used to determine the value of the percentage of vehicle exhaust is a Gas Analyzer and the test vehicle used is a 4-step motorcycle. The research method uses factorial design and variable analysis using Yates's algorithm. The test results show that the effect of the fuel system is -1,272 (Carburetor), the effect of fuel type is -0,268 (Premium), and the type of spark plug is -0,018 (standard spark plug), so the most influential variable on CO gas output is the fuel system using the Carburetor.
{"title":"Influence of Fuel System, Fuels Types and Spark Plug Types on CO Gas Exhaust of Motorized Vehicles","authors":"U. Komarudin","doi":"10.13189/UJME.2019.071303","DOIUrl":"https://doi.org/10.13189/UJME.2019.071303","url":null,"abstract":"Fuel system, type of fuel and type of spark plug, are the determining variables in producing exhaust gas in motorized vehicles. Pollutants produced by motor vehicle emissions include Carbon Monoxide (CO), carbon dioxide (CO2), Sulfur Dioxide (SO2), Nitrogen Monoxide (NOX), Hydrocarbons (HC), Lead Particles (PB), smoke and ash. These pollutants can cause interference in humans, animals, plants and other objects. The study was conducted to determine the effect of the main variables of the fuel system variables (Carburetor and EFI), type of fuel (Premium octane 88 and Pertamax octane 92) and the type of spark plugs (standard spark plugs and spark plugs Iridium) on CO gas exhaust. The test tool used to determine the value of the percentage of vehicle exhaust is a Gas Analyzer and the test vehicle used is a 4-step motorcycle. The research method uses factorial design and variable analysis using Yates's algorithm. The test results show that the effect of the fuel system is -1,272 (Carburetor), the effect of fuel type is -0,268 (Premium), and the type of spark plug is -0,018 (standard spark plug), so the most influential variable on CO gas output is the fuel system using the Carburetor.","PeriodicalId":275027,"journal":{"name":"Universal Journal of Mechanical Engineering","volume":"254 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123749796","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}
Pub Date : 2019-05-01DOI: 10.13189/UJME.2019.071301
Martoni, Marisa Hirary
Experimental studies to see the surface roughness of the turning process have been carried out. The study was conducted to determine the effect of the main variables and the relationship of variables to surface roughness (modeling). The variables carried out were feeding (f), spindle rotation (n) and coolant. Material Specimens use St-37 with cylindrical dimensions. Test specimens were made using conventional lathes, HSS cutting tools and roughness tests were performed with using a Surfcorder (Surface Roughness Measuring Instrument) SE 1700 . The research method uses factorial design, variable analysis using Yates's algorithm and modeling using Least Square statistics. The test results show that the most influential variable is feeding, f = 4,957 m, where the biggest roughness occurs at conditions f = 1.2912 m / min, n = 640 rpm and without cooling media. The modeling results show that surface roughness is a function of feeding and velocity, Ra = f (f, n), (Ra = 5.2024 f + 0.0048n), the higher the feeding and speed, the greater the surface roughness.
对车削过程的表面粗糙度进行了实验研究。研究确定了主要变量对表面粗糙度的影响以及变量之间的关系(建模)。进行的变量是进料(f)，主轴旋转(n)和冷却剂。材料样品使用St-37圆柱尺寸。使用常规车床和高速钢刀具制作试样，并使用Surfcorder(表面粗糙度测量仪)SE 1700进行粗糙度测试。研究方法采用因子设计，变量分析采用耶茨算法，建模采用最小二乘统计。试验结果表明，影响最大的变量是进给量f = 4,957m，其中在f = 1.2912 m / min, n = 640 rpm，无冷却介质时粗糙度最大。建模结果表明，表面粗糙度是进给量和速度的函数，Ra = f (f, n)， (Ra = 5.2024 f + 0.0048n)，进给量和速度越高，表面粗糙度越大。
{"title":"Analysis of the Effect of Round, Feeding and Coolant on Surface Roughness in the Processing of Combination Using Factorial Design","authors":"Martoni, Marisa Hirary","doi":"10.13189/UJME.2019.071301","DOIUrl":"https://doi.org/10.13189/UJME.2019.071301","url":null,"abstract":"Experimental studies to see the surface roughness of the turning process have been carried out. The study was conducted to determine the effect of the main variables and the relationship of variables to surface roughness (modeling). The variables carried out were feeding (f), spindle rotation (n) and coolant. Material Specimens use St-37 with cylindrical dimensions. Test specimens were made using conventional lathes, HSS cutting tools and roughness tests were performed with using a Surfcorder (Surface Roughness Measuring Instrument) SE 1700 . The research method uses factorial design, variable analysis using Yates's algorithm and modeling using Least Square statistics. The test results show that the most influential variable is feeding, f = 4,957 m, where the biggest roughness occurs at conditions f = 1.2912 m / min, n = 640 rpm and without cooling media. The modeling results show that surface roughness is a function of feeding and velocity, Ra = f (f, n), (Ra = 5.2024 f + 0.0048n), the higher the feeding and speed, the greater the surface roughness.","PeriodicalId":275027,"journal":{"name":"Universal Journal of Mechanical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129515579","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}
Pub Date : 2019-05-01DOI: 10.13189/UJME.2019.070305
I. Abdulghafor, A. Abdulrasool, Qasim S. Mehdi
The present experimental study presents the of performance of the combine cooling system (chilled ceiling and displacement ventilation). The experimental study included the effect of different temperatures of chilled ceiling of (20 and 16)℃ and different supplied air temperatures of (18, 20, 22 and 24)℃ with constant internal load of 1600W and constant supplied air velocity of 0.75m/s. The theoretical study content studying the air flow pattern through occupant zone and temperatures contours in different directions X, Y and Z at supplied air temperature (18)℃ and internal load, mean plate temperature and supplied air velocity of (1600W, 20℃ and 0.75m/s) respectively. The experimental results show that the cooling capacity of air decreases as temperature of supplied air increases. At temperature of supplied air increase by 33.3%, the cooling capacity of air decreases by (22.7 and 22.54)% for chilled ceiling temperature of (20 and 16)℃ respectively. While cooling capacity of chilled ceiling increases as supplied air temperature increases. At supplied air increases by 33.3%, the cooling capacity of chilled ceiling increase by (14 and 15.28)% for chilled ceiling temperatures of (20 and 16)℃ respectively. The theoretical results show that the air velocity and temperatures contours for supplied air temperature in different direction are approximated constant.
{"title":"Theoretical and Experimental Study of Combined System: Chilled Ceiling and Displacement Ventilation","authors":"I. Abdulghafor, A. Abdulrasool, Qasim S. Mehdi","doi":"10.13189/UJME.2019.070305","DOIUrl":"https://doi.org/10.13189/UJME.2019.070305","url":null,"abstract":"The present experimental study presents the of performance of the combine cooling system (chilled ceiling and displacement ventilation). The experimental study included the effect of different temperatures of chilled ceiling of (20 and 16)℃ and different supplied air temperatures of (18, 20, 22 and 24)℃ with constant internal load of 1600W and constant supplied air velocity of 0.75m/s. The theoretical study content studying the air flow pattern through occupant zone and temperatures contours in different directions X, Y and Z at supplied air temperature (18)℃ and internal load, mean plate temperature and supplied air velocity of (1600W, 20℃ and 0.75m/s) respectively. The experimental results show that the cooling capacity of air decreases as temperature of supplied air increases. At temperature of supplied air increase by 33.3%, the cooling capacity of air decreases by (22.7 and 22.54)% for chilled ceiling temperature of (20 and 16)℃ respectively. While cooling capacity of chilled ceiling increases as supplied air temperature increases. At supplied air increases by 33.3%, the cooling capacity of chilled ceiling increase by (14 and 15.28)% for chilled ceiling temperatures of (20 and 16)℃ respectively. The theoretical results show that the air velocity and temperatures contours for supplied air temperature in different direction are approximated constant.","PeriodicalId":275027,"journal":{"name":"Universal Journal of Mechanical Engineering","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116086800","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}
Pub Date : 2019-03-01DOI: 10.13189/UJME.2019.070204
Afrim Gjelaj, Besar Berisha, F. Smaili
Application of artificial intelligence in manufacturing process has great impact factor. This work paper is focused into optimization of machining by turning process regarding to the analysing of tool selection (TS), tool path length (TPL) and machining parameters for turning operation using the artificial Intelligence. Except of solving of problems for tool selection and tool path length, here also will be analysed the cutting force (Fc) by turning process whereas as case of research material is steel C45. The results of measurement of the main cutting force Fc, are compared and predicted in theoretical and practical way. Also, all of requirements are fulfilled in regard of the expression. In same time are optimized the main machining parameters regarding to the cutting force with utilization of the Multi-Objective Genetic Algorithm (MOGA). Results for cutting power Pc and Metal removal rate MRR using Pareto Front are obtained using MOGA.
{"title":"Optimization of Turning Process and Cutting Force Using Multiobjective Genetic Algorithm","authors":"Afrim Gjelaj, Besar Berisha, F. Smaili","doi":"10.13189/UJME.2019.070204","DOIUrl":"https://doi.org/10.13189/UJME.2019.070204","url":null,"abstract":"Application of artificial intelligence in manufacturing process has great impact factor. This work paper is focused into optimization of machining by turning process regarding to the analysing of tool selection (TS), tool path length (TPL) and machining parameters for turning operation using the artificial Intelligence. Except of solving of problems for tool selection and tool path length, here also will be analysed the cutting force (Fc) by turning process whereas as case of research material is steel C45. The results of measurement of the main cutting force Fc, are compared and predicted in theoretical and practical way. Also, all of requirements are fulfilled in regard of the expression. In same time are optimized the main machining parameters regarding to the cutting force with utilization of the Multi-Objective Genetic Algorithm (MOGA). Results for cutting power Pc and Metal removal rate MRR using Pareto Front are obtained using MOGA.","PeriodicalId":275027,"journal":{"name":"Universal Journal of Mechanical Engineering","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114996480","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}
Pub Date : 2019-03-01DOI: 10.13189/UJME.2019.070205
Saad S. Alrwashdeh
Concentrated solar energy systems are one of the most important applications of solar energy, which will have a promising future in Jordan that because of Jordan has more than 300 sunny days with a high rate of solar radiation. In this research, the phenomenon of blocking and shadowing of mirrors in the solar field and their effect on the production of energy from the solar tower was examined and found that the mirrors far from the solar tower are affected in these phenomena significantly unlike the nearest mirrors.
{"title":"Energy Production Assessment of Solar Tower Based on the Study of the Mirror Shadowing and Blocking Effects","authors":"Saad S. Alrwashdeh","doi":"10.13189/UJME.2019.070205","DOIUrl":"https://doi.org/10.13189/UJME.2019.070205","url":null,"abstract":"Concentrated solar energy systems are one of the most important applications of solar energy, which will have a promising future in Jordan that because of Jordan has more than 300 sunny days with a high rate of solar radiation. In this research, the phenomenon of blocking and shadowing of mirrors in the solar field and their effect on the production of energy from the solar tower was examined and found that the mirrors far from the solar tower are affected in these phenomena significantly unlike the nearest mirrors.","PeriodicalId":275027,"journal":{"name":"Universal Journal of Mechanical Engineering","volume":"263 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130837231","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}
Pub Date : 2019-03-01DOI: 10.13189/UJME.2019.070202
Rafat F. Al-Waked, M. Nasif
Membrane heat exchanger is one of the main components of green HVAC systems. Performance of a thin-membrane heat exchanger has been examined for different membrane materials. A computational fluid dynamics (CFD) approach was utilized to conduct the current study. The CFD model consisted of a single channel for hot stream and another channel for cold stream. Four membranes were investigated: 45 gsm and 60 gsm Kraft paper, modified cellulose acetate membrane and PVA/LiCl blend membrane. Obtained values of thermal effectiveness at typical HVAC system conditions showed that different membrane materials produced different thermal performance values. The amount of energy recovered from the modified cellulose acetate membrane heat exchanger was the highest. Finally, heat exchanger performance is found to be very sensitive to ambient air relative humidity variation.
{"title":"Air to Air Energy Recovery from HVAC Systems under Different Membrane Materials","authors":"Rafat F. Al-Waked, M. Nasif","doi":"10.13189/UJME.2019.070202","DOIUrl":"https://doi.org/10.13189/UJME.2019.070202","url":null,"abstract":"Membrane heat exchanger is one of the main components of green HVAC systems. Performance of a thin-membrane heat exchanger has been examined for different membrane materials. A computational fluid dynamics (CFD) approach was utilized to conduct the current study. The CFD model consisted of a single channel for hot stream and another channel for cold stream. Four membranes were investigated: 45 gsm and 60 gsm Kraft paper, modified cellulose acetate membrane and PVA/LiCl blend membrane. Obtained values of thermal effectiveness at typical HVAC system conditions showed that different membrane materials produced different thermal performance values. The amount of energy recovered from the modified cellulose acetate membrane heat exchanger was the highest. Finally, heat exchanger performance is found to be very sensitive to ambient air relative humidity variation.","PeriodicalId":275027,"journal":{"name":"Universal Journal of Mechanical Engineering","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116208469","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}
Pub Date : 2019-03-01DOI: 10.13189/ujme.2019.070201
I. Bakalov
Engine simulators are used to achieve the critical educational objectives in training the ship's crew. The simulators provide a complete scientific insight into systems, engines, machinery and everyday operation, as well as detection and fixing of problems. In addition, engine room simulators help teamwork, adaptation to different situations, and decision-making in a crisis situation. An exercise for seafarers was developed in a virtual LNG Carrier with Steam Turbine as main engine in the ERS TehSim 5000 simulation complex. The participants are divided into different teams: - for engine room team, and technical team. The exercise was developed on the basis of the ability of the marine engineers' training complex and the LNG Carrier vessel model on the simulator. The exercise consisted of work on the ship's steam system on LNG Carrier mixed with a real failure on the steam line. The engine room team operates on the simulated complex, and the technical team is dealing with the real work until troubleshooting. The exercise consists of: work on a real check list to start the power system; alarm sound; real work on the problem; implementation of emergency response procedures. The working staffs of the exercise are Greek students – fourth year mechanics, with experience of LNG Carrier.
{"title":"A Contemporary Concept in Troubleshooting and Fixing Malfunctions Using an Engine Room Simulator in Augmented Reality Environment","authors":"I. Bakalov","doi":"10.13189/ujme.2019.070201","DOIUrl":"https://doi.org/10.13189/ujme.2019.070201","url":null,"abstract":"Engine simulators are used to achieve the critical educational objectives in training the ship's crew. The simulators provide a complete scientific insight into systems, engines, machinery and everyday operation, as well as detection and fixing of problems. In addition, engine room simulators help teamwork, adaptation to different situations, and decision-making in a crisis situation. An exercise for seafarers was developed in a virtual LNG Carrier with Steam Turbine as main engine in the ERS TehSim 5000 simulation complex. The participants are divided into different teams: - for engine room team, and technical team. The exercise was developed on the basis of the ability of the marine engineers' training complex and the LNG Carrier vessel model on the simulator. The exercise consisted of work on the ship's steam system on LNG Carrier mixed with a real failure on the steam line. The engine room team operates on the simulated complex, and the technical team is dealing with the real work until troubleshooting. The exercise consists of: work on a real check list to start the power system; alarm sound; real work on the problem; implementation of emergency response procedures. The working staffs of the exercise are Greek students – fourth year mechanics, with experience of LNG Carrier.","PeriodicalId":275027,"journal":{"name":"Universal Journal of Mechanical Engineering","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132348227","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}
Pub Date : 2019-03-01DOI: 10.13189/UJME.2019.070203
R. Alizade
This paper focuses on the systematic type synthesis of parallel robot manipulators by using new structural formulas based on the screw theory. New structural formulas as a total number of screw in kinematic pairs , number of screws with variable pitch , total number of screws that represent the contact geometry of lower and higher joint elements (t), mobility equation for robot manipulators (M), dimension of the closed loop , motion of end effector of parallel manipulator , number degree of freedom of kinematic pairs , refers to find the kinematic structure of robot manipulators realizing a specified motion requirement. Twenty kinematic pairs with structural parameters are introduced. History of six structural formulas using for structural synthesis of parallel robot manipulators from space and different subspaces are presented as a table with equations, authors, years and some commentaries. The structural synthesis approach is based on the elementary notions of screw theory. Using the proposed of structural formulas approach, families of platform manipulators are constructed from a set of structural units. This paper is appropriate for engineers with interest in robotics, rovers, space docking parallel manipulators and screw theory.
{"title":"Structural Synthesis of Robot Manipulators by Using Screw with Variable Pitch","authors":"R. Alizade","doi":"10.13189/UJME.2019.070203","DOIUrl":"https://doi.org/10.13189/UJME.2019.070203","url":null,"abstract":"This paper focuses on the systematic type synthesis of parallel robot manipulators by using new structural formulas based on the screw theory. New structural formulas as a total number of screw in kinematic pairs , number of screws with variable pitch , total number of screws that represent the contact geometry of lower and higher joint elements (t), mobility equation for robot manipulators (M), dimension of the closed loop , motion of end effector of parallel manipulator , number degree of freedom of kinematic pairs , refers to find the kinematic structure of robot manipulators realizing a specified motion requirement. Twenty kinematic pairs with structural parameters are introduced. History of six structural formulas using for structural synthesis of parallel robot manipulators from space and different subspaces are presented as a table with equations, authors, years and some commentaries. The structural synthesis approach is based on the elementary notions of screw theory. Using the proposed of structural formulas approach, families of platform manipulators are constructed from a set of structural units. This paper is appropriate for engineers with interest in robotics, rovers, space docking parallel manipulators and screw theory.","PeriodicalId":275027,"journal":{"name":"Universal Journal of Mechanical Engineering","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128978145","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：