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Effect of Microstructure on the High Deformation Stability of Incoloy 825 Alloy 显微组织对incoly 825合金高变形稳定性的影响
Power System Engineering Pub Date : 2017-04-30 DOI: 10.9726/KSPSE.2017.21.2.020
C. Kang, Seong-Hwi Kim, Young-Tae Park
{"title":"Effect of Microstructure on the High Deformation Stability of Incoloy 825 Alloy","authors":"C. Kang, Seong-Hwi Kim, Young-Tae Park","doi":"10.9726/KSPSE.2017.21.2.020","DOIUrl":"https://doi.org/10.9726/KSPSE.2017.21.2.020","url":null,"abstract":": This study was carried out to investigate the effect of precipitate on the high temperature deformation stability of incoloy 825 alloy. Cr 23 C 6 carbide was precipitated under 950 ℃ , but was not detected over 1,000 ℃ . Most of the precipitation consist of Cr 23 C 6 carbide. Strain-rate sensitivity was the highest in 0.01/s and the lowest in 10/s. Strain-rate sensitivity was decreased sharply below 950 ℃ . In the temperature between 850 ℃ ~1,150 ℃ , plastic instable area did not exist. It showed the lowest Ziegler Parameter value of 0.06 Ziegler Parameter was the lowest as 0.06 at 850 ℃ with 10s-1 of strain. The highest Ziegler Parameter value(0.43) was found in plastic deformation at 1,050 ℃ with 0.01s-1 of strain. It tends to have an higher resistance to the high temperature deformation under 950 ℃ , due to the precipitation.","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129666823","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
Corrosion Resistance of SPCC, SPFC590, SPFC780 Steel by Organic/Inorganic Hybrid Solution (Case of different SiO2 polysilicate under a constant melamin) 有机/无机混合溶液对SPCC、SPFC590、SPFC780钢耐蚀性的影响(不同SiO2聚硅酸在恒定三聚氰胺下的情况)
Power System Engineering Pub Date : 2017-04-30 DOI: 10.9726/KSPSE.2017.21.2.005
K. Nam, H. Jeong, K. Lee
{"title":"Corrosion Resistance of SPCC, SPFC590, SPFC780 Steel by Organic/Inorganic Hybrid Solution (Case of different SiO2 polysilicate under a constant melamin)","authors":"K. Nam, H. Jeong, K. Lee","doi":"10.9726/KSPSE.2017.21.2.005","DOIUrl":"https://doi.org/10.9726/KSPSE.2017.21.2.005","url":null,"abstract":": This study has developed an organic/inorganic hybrid solution according to amount of SiO 2 polysilicate, and the amount of melamine is constant. The three types of cold rolled steel were evaluated a corrosion resistance properties by using these solutions. US 3 M 3 and US 11 M 3 solutions were generate a lot of corrosion. US 7 M 3 solution was excellent in corrosion resistance, regardless of the steel type. The appearance of coating by US 3 M 3 and US 11 M 3 solutions were bumpy surface, and were a lot of fine defects. US 7 M 3 solution was made a sophisticated molecular cross-linking structure inside the coating, it was a slick surface. Other characteristics are exhibited the excellent property for all solutions.","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115755535","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
Numerical Analysis on Velocity Fields around Seabed Tiller for the Improvement of Seabed Soil 海底分蘖改善海底土壤的速度场数值分析
Power System Engineering Pub Date : 2017-04-30 DOI: 10.9726/kspse.2017.21.2.048
Jang-Kweon Kim, Seok-Hyung Oh, Jong-Beom Kim, Sang-Ok Chung
{"title":"Numerical Analysis on Velocity Fields around Seabed Tiller for the Improvement of Seabed Soil","authors":"Jang-Kweon Kim, Seok-Hyung Oh, Jong-Beom Kim, Sang-Ok Chung","doi":"10.9726/kspse.2017.21.2.048","DOIUrl":"https://doi.org/10.9726/kspse.2017.21.2.048","url":null,"abstract":"","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123071464","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
Performance Characteristics of Two-stage Compression Seawater Ice Machine Applied Drum type Evaporator 两级压缩海水制冰机的性能特点
Power System Engineering Pub Date : 2017-04-30 DOI: 10.9726/kspse.2017.21.2.077
손창효, 윤정인, 전민주, 이현경, 허성관
{"title":"Performance Characteristics of Two-stage Compression Seawater Ice Machine Applied Drum type Evaporator","authors":"손창효, 윤정인, 전민주, 이현경, 허성관","doi":"10.9726/kspse.2017.21.2.077","DOIUrl":"https://doi.org/10.9726/kspse.2017.21.2.077","url":null,"abstract":"In the fishing boat, freshwater ice is loaded on the fishroom in advance and it is used for storage of fishes. However, it causes degradation of catches\" freshness. Therefore, seawater ice machine on board is necessary for the fishing industry. In this study, seawater ice machine with drum type evaporator was manufactured, and the system was tested under various operating conditions having an influence on the COP and amount of ice produced. The main results are as follow : The COP of the system gets larger when the evaporation temperature and rotation speed of the drum in the evaporator increases. The most effective refrigerant is R22 and the value of the COP was 1.43 times higher than that of R404A. The amount of produced ice increases with respect to increment of the evaporation temperature, while that decreases with respect to increment of the evaporator drum rotation speed.","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124478291","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
Large Eddy Simulation on the Drag and Static Pressure Acting on the Blade Surface of Three-Dimensional Small-Size Axial Fan with Different Operating Loads 不同运行负荷下三维小尺寸轴流风机叶片表面阻力和静压的大涡模拟
Power System Engineering Pub Date : 2017-04-30 DOI: 10.9726/KSPSE.2017.21.2.057
Jang-Kweon Kim, Seok-Hyung Oh
{"title":"Large Eddy Simulation on the Drag and Static Pressure Acting on the Blade Surface of Three-Dimensional Small-Size Axial Fan with Different Operating Loads","authors":"Jang-Kweon Kim, Seok-Hyung Oh","doi":"10.9726/KSPSE.2017.21.2.057","DOIUrl":"https://doi.org/10.9726/KSPSE.2017.21.2.057","url":null,"abstract":": The large-eddy simulation(LES) was carried out to evaluate the drag and static pressure acting on the blade surface of a small-size axial fan(SSAF) under the condition of unsteady-state, incompressible fluid and three-dimensional coordination. The axial component of drag coefficient increases with the increase of operating load, but the radial components have negligible sizes regardless of operating loads. Otherwise, the static pressures acting on the blade surfaces of SSAF show different distributions around the operating point of D equivalent to the stall. Also, with the increase of operating load, the static pressures acting on the pressure and suction surfaces of blade concentrate at the tips and leading-edges as a whole.","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131858526","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
High Temperature Corrosion Characteristics of Al-Si-Mg Alloy in O2 and H2S/H2 Environments Al-Si-Mg合金在O2和H2S/H2环境中的高温腐蚀特性
Power System Engineering Pub Date : 2017-04-30 DOI: 10.9726/kspse.2017.21.2.014
Yeong-Hwan Lee, Young-jin Son, Byung-Woo Lee
{"title":"High Temperature Corrosion Characteristics of Al-Si-Mg Alloy in O2 and H2S/H2 Environments","authors":"Yeong-Hwan Lee, Young-jin Son, Byung-Woo Lee","doi":"10.9726/kspse.2017.21.2.014","DOIUrl":"https://doi.org/10.9726/kspse.2017.21.2.014","url":null,"abstract":"","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128951985","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
Robot Motion Regeneration based on Independent Arm Control System Design Method 基于独立手臂控制系统的机器人运动再生设计方法
Power System Engineering Pub Date : 2017-02-28 DOI: 10.9726/KSPSE.2017.21.1.030
M. Tran, Kyu-Il Han, Young-Bok Kim
{"title":"Robot Motion Regeneration based on Independent Arm Control System Design Method","authors":"M. Tran, Kyu-Il Han, Young-Bok Kim","doi":"10.9726/KSPSE.2017.21.1.030","DOIUrl":"https://doi.org/10.9726/KSPSE.2017.21.1.030","url":null,"abstract":"In robot industries, the request to obtain a high efficiency and accurately controlled electric actuator has been growing. Nevertheless, the effectiveness of electric actuators is significantly affected by the presence of factors such as nonlinearity, uncertain disturbance and unknown dynamics. Therefore, it makes difficult to derive an exact mathematical model of the controlled system. In this paper, a new method for easily recognizing and regenerating robot motions used in small size industries such as painting and welding parts is proposed. Instead of modeling the entire dynamic motion of the robot system, this method is based on the procedure of modeling and controller design for every arm individually. The proposed method does not require complex model and control system such that it gives easy working process to the small size industries. Based on this fact, in this research, the model and PID controller for every arm of the 3 DOF robot system are obtained separately. Some experimental results are implemented to validate the effectiveness of the proposed method.","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"188 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126257909","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
Performance Characteristics of Refrigeration Cycles with Ejector using Refrigerants 使用制冷剂的喷射器制冷循环的性能特征
Power System Engineering Pub Date : 2017-02-28 DOI: 10.9726/KSPSE.2017.21.1.024
J. Yoon, C. Kim, C. Son
{"title":"Performance Characteristics of Refrigeration Cycles with Ejector using Refrigerants","authors":"J. Yoon, C. Kim, C. Son","doi":"10.9726/KSPSE.2017.21.1.024","DOIUrl":"https://doi.org/10.9726/KSPSE.2017.21.1.024","url":null,"abstract":": Studies in liquid-vapor ejector, which performs a great efficiency in refrigeration cycle is highly concerned. This paper is based on basic refrigeration cycle and three ejector refrigeration cycles and the comparison and contrasts about when 6 different refrigerants are applied to such refrigeration cycles. All cycles had a percentage increase of COP from 4 to 74% when ejector was applied, and the source of increasement was the decrease of total work done due to ejector's pressure recovery function. When R-245fa is applied to cycle (d), results showed that COP was the most superior in such cycle, R-245fa showed high volume entrainment ratio in all cycles. Future studies in refrigeration cycles will require more knowledge and experiments on ejector's appliance to refrigeration cycles and the actuation of such functions.","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129552481","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
Effect of TiO2 Particle Size and Content on the Mechanical Properties of TiO2/Epoxy Composites TiO2粒径及含量对TiO2/环氧复合材料力学性能的影响
Power System Engineering Pub Date : 2017-02-28 DOI: 10.9726/kspse.2017.21.1.011
Bu-An Kim, C. Moon
{"title":"Effect of TiO2 Particle Size and Content on the Mechanical Properties of TiO2/Epoxy Composites","authors":"Bu-An Kim, C. Moon","doi":"10.9726/kspse.2017.21.1.011","DOIUrl":"https://doi.org/10.9726/kspse.2017.21.1.011","url":null,"abstract":"","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124161977","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
A Fundamental Study on Development of Non-Welded Flexible Joint 非焊接柔性接头发展的基础研究
Power System Engineering Pub Date : 2017-02-28 DOI: 10.9726/KSPSE.2017.21.1.057
C. Oh, Hwan-Chul Park, Ji-Hyun Jeong
{"title":"A Fundamental Study on Development of Non-Welded Flexible Joint","authors":"C. Oh, Hwan-Chul Park, Ji-Hyun Jeong","doi":"10.9726/KSPSE.2017.21.1.057","DOIUrl":"https://doi.org/10.9726/KSPSE.2017.21.1.057","url":null,"abstract":": The flexible joint with bellows and flange is made by welding bellows and flange in general. The welded parts cause a crack or demage in the flexible joint due to continuous vibration and fatigue limit. This paper is concerned with development of flexible joint with non-welded, free rotation of flange and non-packing to improve fatigue failure condition between bellows and flange. The support box and support plate that are components of press part are designed to compress fore-end of bellows only without demage of bellows. The production system of flexible joint is designed with piston attached on the compression side. The simulation is performed using Deform 3D software. As the result of simulation, the shape of compressed bellows was most proper in the compression power of 157 kg·f and any deformation has not occurred at a part besides fore-end. The result show that the production possibility of the designed flexible joint.","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125238029","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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