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World Academy of Science, Engineering and Technology, International Journal of Materials and Metallurgical Engineering最新文献

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Gradient Complex Protective Coatings for Single-Crystal Nickel Alloys 单晶镍合金的梯度复合防护涂层
V. Kuznetsov, V. Lesnikov, N. Popov, I. P. Konakova, M. Popova
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引用次数: 0
Friction Calculation and Simulation of Column Electric Power Steering System 柱式电动助力转向系统的摩擦计算与仿真
Seyed Hamid Mirmohammad Sadeghi, R. Sesana, D. Maffiodo
This study presents a procedure for friction calculation of column electric power steering (C-EPS) system which affects handling and comfort in driving. The friction losses estimation is obtained from experimental tests and mathematical calculation. Parts in C-EPS mainly involved in friction losses are bearings and worm gear. In the theoretical approach, the gear geometry and Hertz law were employed to measure the normal load and the sliding velocity and contact areas from the worm gears driving conditions. The viscous friction generated in the worm gear was obtained with a theoretical approach and the result was applied to model the friction in the steering system. Finally, by viscous friction coefficient and Coulomb friction coefficient, values of friction in worm gear were calculated. According to the Bearing Company and the characteristics of each bearing, the friction torques due to load and due to speed were calculated. A MATLAB Simulink model for calculating the friction in bearings and worm gear in C-EPS were done and the total friction value was estimated
本文研究了影响操控性和驾驶舒适性的柱式电动助力转向系统的摩擦计算方法。通过试验和数学计算得到了摩擦损失的估计。C-EPS中主要涉及摩擦损失的部件是轴承和蜗轮。在理论方法中,利用齿轮几何和赫兹定律从蜗轮传动条件出发,测量法向载荷、滑动速度和接触面积。采用理论方法得到了蜗轮内产生的粘性摩擦,并将结果应用于转向系统的摩擦建模。最后,通过粘性摩擦系数和库仑摩擦系数计算蜗轮蜗杆的摩擦值。根据轴承公司和每个轴承的特性,计算了由于负载和由于速度引起的摩擦力矩。利用MATLAB Simulink建立了C-EPS中轴承和蜗轮的摩擦计算模型,并估算了总摩擦值
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引用次数: 0
Effect of Oxygen Ion Irradiation on the Structural and Optical Properties of L-Arginine Acetate Single Crystals 氧离子辐照对l -精氨酸醋酸酯单晶结构和光学性质的影响
N. Renuka, R. Babu, N. Vijayan, B. Rathi, K. Thukral
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引用次数: 0
Hydrothermally Fabricated 3-D Nanostructure Metal Oxide Sensors 水热法制备三维纳米结构金属氧化物传感器
M. Alenezi
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引用次数: 1
Corrosion of Fe-(9~37) wt.%Cr Alloys at 700-800 oC in (N2, H2O, H2S)-Mixed Gas Fe-(9~37) wt.%Cr合金在(N2, H2O, H2S)混合气体中700 ~ 800℃的腐蚀
Min Jung Kim, M. Abro, Yuke Shi, D. Lee
Fe-(9, 19, 28, 37)wt.% Cr alloys were corroded at 700 and 800 oC for 70 h under 1 atm of N2, 1 atm of N2/3.2%H2O-mixed gas, and 1 atm of N2/3.1%H2O/2.42%H2S-mixed gas. The corrosion rate of Fe-9Cr alloy increased with the addition of H2O, and furthermore with the addition of H2S in N2 gas. Fe-9Cr alloy was always nonprotective. In contrast, Fe-(19, 28, 37) wt.%Cr alloys were protective in N2 and N2/H2O-mixed gas because of formation of the Cr2O3 layer. They were, however, nonprotective in N2/H2O/H2S-mixed gas because sulfidation dominated to form the outer FeS layer and the inner Cr2S3 layer containing some FeCr2S4.
Fe-(9,19,28,37)wt。% Cr合金在700℃和800℃下,分别在1 atm的N2、1 atm的N2/3.2% h2o混合气体和1 atm的N2/3.1% h2o /2.42% h2s混合气体中腐蚀70 h。Fe-9Cr合金的腐蚀速率随H2O的加入而增大,随H2S的加入而增大。Fe-9Cr合金始终不具有保护作用。相比之下,Fe-(19,28,37) wt.%Cr合金在N2和N2/ h2o混合气体中由于Cr2O3层的形成而具有保护作用。然而,在N2/H2O/ h2s混合气体中,由于硫化作用主要形成外部FeS层和内部含有一些FeCr2S4的Cr2S3层,它们没有保护作用。
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引用次数: 0
Evaluation of Modulus of Elasticity by Non-Destructive Method of Hybrid Fiber Reinforced Concrete 混杂纤维增强混凝土弹性模量的无损评估
Erjola Reufi, Thomas Beer
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引用次数: 7
Experimental Investigation on Effects of Carrier Solvent and Oxide Fluxes in Activated TIG Welding of Reduced Activation Ferritic/Martensitic Steel 载体溶剂和氧化物助焊剂对还原活化铁素体/马氏体钢活化TIG焊接影响的实验研究
J. Vora, V. Badheka
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引用次数: 14
A Multi-Scale Approach for the Analysis of Fiber-Reinforced Composites 纤维增强复合材料的多尺度分析方法
Azeez Shaik, Amit G. Salvi, B. Gautham
{"title":"A Multi-Scale Approach for the Analysis of Fiber-Reinforced Composites","authors":"Azeez Shaik, Amit G. Salvi, B. Gautham","doi":"10.1016/J.MATPR.2017.02.205","DOIUrl":"https://doi.org/10.1016/J.MATPR.2017.02.205","url":null,"abstract":"","PeriodicalId":23734,"journal":{"name":"World Academy of Science, Engineering and Technology, International Journal of Materials and Metallurgical Engineering","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76332628","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: 2
期刊
World Academy of Science, Engineering and Technology, International Journal of Materials and Metallurgical Engineering
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