Pub Date : 2019-09-11DOI: 10.26480/jmerd.05.2019.224.231
M. Mejbel, Mohammed Kadhim Allawi, M. H. Oudah
Improving of epoxy adhesive tensile joint strength is a major interest relevant to many industries. In this study, four types of fillers were chosen (tungsten carbide, silicon carbide, iron, and glass). Fillers were in the form of powder with a particle size of 140 μm. Adherents were 6061-T6 aluminium alloys fabricated according to ASTM D 2094-00 (2014). Bonding surfaces were prepared by grinding using 400 grit emery paper. The surfaces were then chemically etched using CSA solution. Two distance copper wires were used per specimen having a diameter of 180 μm. Five replicas per adhesive condition were adopted. Four volume filler fractions were chosen (10%, 15%, 20%, and 25%). A comparison of average tensile adhesive joint strength was made between the reference (no filler specimen) and other fillers. It was concluded that SiC and iron fillers had negative results on the joint strength, with the worse results occurring at high fractions. Glass with low fractions slightly enhanced the joint strength but showed negative results when the volume fraction was increased. Tungsten carbide showed a slight improvement at 10% fraction, but a major improvement was achieved. In particular, at 20% fraction the strength was enhanced by 41.33%.
提高环氧胶粘剂的拉伸接头强度是许多行业关注的焦点。在这项研究中，选择了四种类型的填料（碳化钨、碳化硅、铁和玻璃）。填料为颗粒尺寸为140μm的粉末形式。粘附剂是根据ASTM D 2094-00（2014）制造的6061-T6铝合金。通过使用400粒度的金刚砂纸进行研磨来制备结合表面。然后使用CSA溶液对表面进行化学蚀刻。每个直径为180μm的样品使用两根距离铜线。每种粘合条件采用五个复制品。选择了四种体积填料组分（10%、15%、20%和25%）。对参考（无填料样品）和其他填料之间的平均拉伸粘合强度进行了比较。结果表明，SiC和铁填料对接头强度有负面影响，而在高分数时效果较差。低分数的玻璃略微提高了接头强度，但当体积分数增加时，显示出负面结果。碳化钨在10%的分数下表现出轻微的改善，但实现了重大的改善。特别地，在20%的分数下，强度提高了41.33%。
{"title":"EFFECTS OF WC, SiC, IRON AND GLASS FILLERS AND THEIR HIGH PERCENTAGE CONTENT ON ADHESIVE BOND STRENGTH OF AN ALUMINIUM ALLOY BUTT JOINT: AN EXPERIMENTAL STUDY","authors":"M. Mejbel, Mohammed Kadhim Allawi, M. H. Oudah","doi":"10.26480/jmerd.05.2019.224.231","DOIUrl":"https://doi.org/10.26480/jmerd.05.2019.224.231","url":null,"abstract":"Improving of epoxy adhesive tensile joint strength is a major interest relevant to many industries. In this study, four types of fillers were chosen (tungsten carbide, silicon carbide, iron, and glass). Fillers were in the form of powder with a particle size of 140 μm. Adherents were 6061-T6 aluminium alloys fabricated according to ASTM D 2094-00 (2014). Bonding surfaces were prepared by grinding using 400 grit emery paper. The surfaces were then chemically etched using CSA solution. Two distance copper wires were used per specimen having a diameter of 180 μm. Five replicas per adhesive condition were adopted. Four volume filler fractions were chosen (10%, 15%, 20%, and 25%). A comparison of average tensile adhesive joint strength was made between the reference (no filler specimen) and other fillers. It was concluded that SiC and iron fillers had negative results on the joint strength, with the worse results occurring at high fractions. Glass with low fractions slightly enhanced the joint strength but showed negative results when the volume fraction was increased. Tungsten carbide showed a slight improvement at 10% fraction, but a major improvement was achieved. In particular, at 20% fraction the strength was enhanced by 41.33%.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44180995","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 : 2019-09-11DOI: 10.26480/jmerd.05.2019.211.215
Mohammed Kadhim Allawi, M. H. Oudah, M. Mejbel
The exhaust manifold is a pivotal part of an internal combustion engine. The work of the exhaust manifold is complicated and depends on many parameters viz. backpressure, velocity, the temperature of the exhaust, etc. In this work, the performance of the exhaust manifold of a four-stroke, four-cylinder, spark-ignition engine was analysed using three types of fuels (gasoline, methane, and methanol) to estimate flow characteristics and backpressure. The manifold modelling is done in Fluent 18.0, followed by analysis and meshing in ANSYS software. Velocity, pressure and temperature profiles at 1000 rpm engine speed were made. We found that methanol provided the highest exit temperature and back pressure, whereas methane provided the lowest exit pressure. Backpressure decreased when using gasoline fuel. Methane resulted in the best exhaust manifold performance.
{"title":"ANALYSIS OF EXHAUST MANIFOLD OF SPARK-IGNITION ENGINE BY USING COMPUTATIONAL FLUID DYNAMICS (CFD)","authors":"Mohammed Kadhim Allawi, M. H. Oudah, M. Mejbel","doi":"10.26480/jmerd.05.2019.211.215","DOIUrl":"https://doi.org/10.26480/jmerd.05.2019.211.215","url":null,"abstract":"The exhaust manifold is a pivotal part of an internal combustion engine. The work of the exhaust manifold is complicated and depends on many parameters viz. backpressure, velocity, the temperature of the exhaust, etc. In this work, the performance of the exhaust manifold of a four-stroke, four-cylinder, spark-ignition engine was analysed using three types of fuels (gasoline, methane, and methanol) to estimate flow characteristics and backpressure. The manifold modelling is done in Fluent 18.0, followed by analysis and meshing in ANSYS software. Velocity, pressure and temperature profiles at 1000 rpm engine speed were made. We found that methanol provided the highest exit temperature and back pressure, whereas methane provided the lowest exit pressure. Backpressure decreased when using gasoline fuel. Methane resulted in the best exhaust manifold performance.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47969916","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 : 2019-09-11DOI: 10.26480/jmerd.04.2019.254.259
Yeoh Shir Lee, M. M. Rahman
{"title":"DESIGN AND FABRICATION OF A PORTABLE BIO-DIGESTER TO PRODUCE METHANE GAS FROM FOOD WASTE","authors":"Yeoh Shir Lee, M. M. Rahman","doi":"10.26480/jmerd.04.2019.254.259","DOIUrl":"https://doi.org/10.26480/jmerd.04.2019.254.259","url":null,"abstract":"","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46772821","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 : 2019-09-11DOI: 10.26480/jmerd.04.2019.249.253
Ahmed S. Jawad, M. M. Rahman, Mohd Suffian Misaran
{"title":"STUDY THE EFFECTS OF PHYSICAL PARAMETERS ON PERFORMANCE IN THE DIVERGENT SOLAR CHIMNEY","authors":"Ahmed S. Jawad, M. M. Rahman, Mohd Suffian Misaran","doi":"10.26480/jmerd.04.2019.249.253","DOIUrl":"https://doi.org/10.26480/jmerd.04.2019.249.253","url":null,"abstract":"","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41496751","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 : 2019-09-10DOI: 10.26480/jmerd.04.2019.243.248
Thi Minh Hao Dong, V. H. Dong
{"title":"HEAT EXCHANGER BY SMOOTH TUBE FOR RECOVERING, UTILIZING THE EXHAUST GAS ENERGY OF SMALL DIESEL ENGINE AIMING AT HEATING PURE VEGETABLE OIL","authors":"Thi Minh Hao Dong, V. H. Dong","doi":"10.26480/jmerd.04.2019.243.248","DOIUrl":"https://doi.org/10.26480/jmerd.04.2019.243.248","url":null,"abstract":"","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43040764","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 : 2019-09-06DOI: 10.26480/jmerd.04.2019.238.242
M. Zubair, Y. Pai
{"title":"REVIEW ON IMPACT RESPONSE OF POLYMER COMPOSITES","authors":"M. Zubair, Y. Pai","doi":"10.26480/jmerd.04.2019.238.242","DOIUrl":"https://doi.org/10.26480/jmerd.04.2019.238.242","url":null,"abstract":"","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41696024","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 : 2019-08-29DOI: 10.26480/jmerd.05.2019.46.50
Thanh H. Truong, V. V. Le
On ships, boilers are used for many purposes: Supplying steam to the main steam turbine to drive the propeller to create thrust, drive generators, drive pumps and winches. Also, it has a role to drive trouble equipment, provide steam for heating lubricants, fuel, steam supply for air conditioning systems for crew members ... With so many important uses, ensuring good operation of the boiler is a matter of primary concern for operators. In the operation of the boiler, controlling the water levels ensures not only good steam generation but also operator safety as well as the boiler itself. Automatic control of the water supply process is an important part of the boiler control system. This system has the function of maintaining a stable water level in the boiler. Currently, fuzzy control theory, whose mathematical tool is the fuzzy set theory of L.A Zadeh is being developed strongly. Different from the old control technique that relies purely on the absolute accuracy of the information that many applications cannot, the fuzzy control can handle unclear information. Information that their accuracy is only recognized by their relations with each other and can only be described in the control language. Fuzzy control allows copying personal information processing and control methods to solve complex control problems. The paper focuses on research to use fuzzy control theory combined with traditional PID controller to achieve optimal quality control for the process of adjusting the boiler water level. Construct a fuzzy controller to adjust parameters of the PID water level controller to optimize the process of adjusting the boiler water level. Simulation of water level control of fuzzy PID control on Matlab-Simulink software.
{"title":"STUDYING SIMULATION FUZZY BASED-PID CONTROLLER TO CONTROL WATER LEVELS IN MARINE BOILERS","authors":"Thanh H. Truong, V. V. Le","doi":"10.26480/jmerd.05.2019.46.50","DOIUrl":"https://doi.org/10.26480/jmerd.05.2019.46.50","url":null,"abstract":"On ships, boilers are used for many purposes: Supplying steam to the main steam turbine to drive the propeller to create thrust, drive generators, drive pumps and winches. Also, it has a role to drive trouble equipment, provide steam for heating lubricants, fuel, steam supply for air conditioning systems for crew members ... With so many important uses, ensuring good operation of the boiler is a matter of primary concern for operators. In the operation of the boiler, controlling the water levels ensures not only good steam generation but also operator safety as well as the boiler itself. Automatic control of the water supply process is an important part of the boiler control system. This system has the function of maintaining a stable water level in the boiler. Currently, fuzzy control theory, whose mathematical tool is the fuzzy set theory of L.A Zadeh is being developed strongly. Different from the old control technique that relies purely on the absolute accuracy of the information that many applications cannot, the fuzzy control can handle unclear information. Information that their accuracy is only recognized by their relations with each other and can only be described in the control language. Fuzzy control allows copying personal information processing and control methods to solve complex control problems. The paper focuses on research to use fuzzy control theory combined with traditional PID controller to achieve optimal quality control for the process of adjusting the boiler water level. Construct a fuzzy controller to adjust parameters of the PID water level controller to optimize the process of adjusting the boiler water level. Simulation of water level control of fuzzy PID control on Matlab-Simulink software.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82781550","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 : 2019-08-29DOI: 10.26480/jmerd.05.2019.89.92
T. N. Thanh, P. Dat, N. D. Nam, Tran Thi Thuy Van
{"title":"A 3D FINITE ELEMENT SIMULATION OF EQUAL CHANNEL ANGULAR EXTRUSION PROCESS TO STUDY COMBINED EFFECT OF TEMPERATURE AND FRICTION ON STRAIN INHOMOGENEITY","authors":"T. N. Thanh, P. Dat, N. D. Nam, Tran Thi Thuy Van","doi":"10.26480/jmerd.05.2019.89.92","DOIUrl":"https://doi.org/10.26480/jmerd.05.2019.89.92","url":null,"abstract":"","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90072363","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 : 2019-08-29DOI: 10.26480/jmerd.05.2019.172.176
Shunming Li, Yuqing Su, Cong Shen, Yun Bai
The regenerative braking energy recovery system of electric vehicle can effectively improve its mileage. In this paper, we took the front-drive EV as the object to analyze the braking force allocation during its braking process. After considering ECE regulation, the motor peak torque and battery charging power as the main restrictive conditions and combining them with driver braking intensity discrimination characteristics, a new control strategy of regenerative braking force allocation was proposed for the vehicle. Then, simulation model was established on the MATLAB/Simulink software platform. At the same time, the initial velocity is 30km/h, 60km/h and 100km/h respectively, and the braking intensity is 0.1 and 0.5 respectively, which were set as simulation conditions. The simulation results of the strategy were compared to that of ideal braking force allocation strategy under the middle braking intensity condition. The results show that this control strategy can effectively achieve the braking energy recovery, and the efficiency at each initial braking speed of low, medium and high speeds is higher than that of ideal braking force allocation strategy.
{"title":"STUDY ON THE ALLOCATION STRATEGY OF REGENERATIVE BRAKING FORCE WITH A DRIVER’S INTENTION","authors":"Shunming Li, Yuqing Su, Cong Shen, Yun Bai","doi":"10.26480/jmerd.05.2019.172.176","DOIUrl":"https://doi.org/10.26480/jmerd.05.2019.172.176","url":null,"abstract":"The regenerative braking energy recovery system of electric vehicle can effectively improve its mileage. In this paper, we took the front-drive EV as the object to analyze the braking force allocation during its braking process. After considering ECE regulation, the motor peak torque and battery charging power as the main restrictive conditions and combining them with driver braking intensity discrimination characteristics, a new control strategy of regenerative braking force allocation was proposed for the vehicle. Then, simulation model was established on the MATLAB/Simulink software platform. At the same time, the initial velocity is 30km/h, 60km/h and 100km/h respectively, and the braking intensity is 0.1 and 0.5 respectively, which were set as simulation conditions. The simulation results of the strategy were compared to that of ideal braking force allocation strategy under the middle braking intensity condition. The results show that this control strategy can effectively achieve the braking energy recovery, and the efficiency at each initial braking speed of low, medium and high speeds is higher than that of ideal braking force allocation strategy.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":"186 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86728469","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 : 2019-08-29DOI: 10.26480/jmerd.05.2019.78.82
T. N. Thanh, P. Dat, N. D. Nam, Tran Thi Thuy Van
This paper presents the results of research about the using of composite materials to make circular rotating parts with two spherical ends. From the analysis of the working characteristics of this details, the article selected the winding technology and using composite materials to produce details with cylindrical and spherical shape characteristics. The material group that the article presents is a composite unidirectional glass fiber reinforced composite with polymer matrix. This material is characterized by a specific density of 2.02g/cm3; tensile strength is 1750MPa; elastic module is 55GPa; elongation reached 3.18%. With properties of such materials, it is suitable for working conditions of details.
{"title":"RESEARCH USING COMPOSITE MATERIALS IN MANUFACTURING PRESSURERESISTANT CIRCULAR DETAILS WITH THE TWO SPHERICAL BOTTOM BY WINDING TECHNOLOGY","authors":"T. N. Thanh, P. Dat, N. D. Nam, Tran Thi Thuy Van","doi":"10.26480/jmerd.05.2019.78.82","DOIUrl":"https://doi.org/10.26480/jmerd.05.2019.78.82","url":null,"abstract":"This paper presents the results of research about the using of composite materials to make circular rotating parts with two spherical ends. From the analysis of the working characteristics of this details, the article selected the winding technology and using composite materials to produce details with cylindrical and spherical shape characteristics. The material group that the article presents is a composite unidirectional glass fiber reinforced composite with polymer matrix. This material is characterized by a specific density of 2.02g/cm3; tensile strength is 1750MPa; elastic module is 55GPa; elongation reached 3.18%. With properties of such materials, it is suitable for working conditions of details.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":"85 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83911863","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}
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