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Application of grey-taguchi method for optimization of dry sliding wear properties of aluminum MMCs
Rajesh SIRIYALA, Gopala Krishna ALLURU, Rama Murthy Raju PENMETSA, Muthukannan DURAISELVAM
《机械工程前沿(英文)》 2012年 第7卷 第3期 页码 279-287 doi: 10.1007/s11465-012-0329-0
Through a pin-on-disc type wear setup, the dry sliding wear behavior of SiC-reinforced aluminum composites produced using the molten metal mixing method was investigated in this paper. Dry sliding wear tests were carried on SiC-reinforced metal matrix composites (MMCs) and its matrix alloy sliding against a steel counter face. Different contact stresses, reinforcement percentages, sliding distances, and sliding velocities were selected as the control variables, and the responses were selected as the wear volume loss (WVL) and coefficient of friction (COF) to evaluate the dry sliding performance. An L25 orthogonal array was employed for the experimental design. Initially, the optimization of the dry sliding performance of the SiC-reinforced MMCs was performed using grey relational analysis (GRA). Based on the GRA, the optimum level parameters for overall grey relational grade in terms of WVL and COF were identified. Analysis of variance was performed to determine the effect of individual factors on the overall grey relational grade. The results indicated that the sliding velocity was the most effective factor among the control parameters on dry sliding wear, followed by the reinforcement percentage, sliding distance, and contact stress. Finally, the wear surface morphology and wear mechanism of the composites were investigated through scanning electron microscopy.
关键词: aluminum ANOVA (analysis of variance) grey relational analysis metal matrix composites SiC particulates Taguchi
《化学科学与工程前沿(英文)》 2023年 第17卷 第12期 页码 1913-1924 doi: 10.1007/s11705-023-2350-8
关键词: inverse opal TiO2 silicon carbide quantum dots quantum dot sensitized photocatalyst type-II charge transfer route
《环境科学与工程前沿(英文)》 2023年 第17卷 第11期 doi: 10.1007/s11783-023-1734-9
● Photochemical conversion of chlorobenzene (CB) on α-Fe2O3 was evaluated.
关键词: Photochemical conversion Chlorobenzene α-Fe2O3 PCDD/Fs Mineral particulate
邱竹贤
《中国工程科学》 2001年 第3卷 第5期 页码 50-54
介绍了现代铝工业上新近开发研制的几种电极材料,涉及惰性阴极、惰性阳极、双极性电极等;还研制了低温电解质,使电解温度降低到800~900℃。如果惰性电极与低温电解质配合起来应用,则能够明显减少工业铝生产中的物料消耗,节省电能,增大电解槽生产能力,并改善环境状况,可望大幅度降低生产成本。
陈长坤
《中国工程科学》 2010年 第12卷 第1期 页码 48-51
对火灾下气溶胶灭火剂固体微粒的空间分布特点及沉降过程进行了非稳态分析,给出了微粒粒径对其运动状态的影响特征,对固体微粒在流场中的稳定性及滞留时间进行了研究,获得了微粒到达火源表面的临界粒径表达式。结果表明,微粒沉降过程其沉降的雷诺数与粒子直径相关,且基本处于低雷诺数状态,沉降速度与微粒粒径的平方成正比。当微粒直径小于100 μm时,将在很短时间内达到相对稳定的流动状态;当微粒直径达到1 μm时,可在空间中长期滞留,并通过卷吸进入火焰区域,达到灭火的效果。
Omotoyosi H. FAMODIMU, Mark STANFORD, Chike F. ODUOZA, Lijuan ZHANG
《机械工程前沿(英文)》 2018年 第13卷 第4期 页码 520-527 doi: 10.1007/s11465-018-0521-y
Laser melting of aluminium alloy—AlSi10Mg has increasingly been used to create specialised products in various industrial applications, however, research on utilising laser melting of aluminium matrix composites in replacing specialised parts have been slow on the uptake. This has been attributed to the complexity of the laser melting process, metal/ceramic feedstock for the process and the reaction of the feedstock material to the laser. Thus, an understanding of the process, material microstructure and mechanical properties is important for its adoption as a manufacturing route of aluminium metal matrix composites. The effects of several parameters of the laser melting process on the mechanical blended composite were thus investigated in this research. This included single track formations of the matrix alloy and the composite alloyed with 5% and 10% respectively for their reaction to laser melting and the fabrication of density blocks to investigate the relative density and porosity over different scan speeds. The results from these experiments were utilised in determining a process window in fabricating near-fully dense parts.
关键词: selective laser melting additive manufacturing mechanical alloying powder metallurgy aluminium metal matrix composite
A 14-year measurement of toxic elements in atmospheric particulates in Hong Kong from 1995 to 2008
Wei NIE,Tao WANG,Aijun DING,Xuehua ZHOU,Wenxing WANG
《环境科学与工程前沿(英文)》 2014年 第8卷 第4期 页码 553-560 doi: 10.1007/s11783-013-0523-2
关键词: toxic elements increasing trends seasonal variations air masses long-distance sources
CuO/zeolite catalyzed oxidation of gaseous toluene under microwave heating
Longli BO, Jianbo LIAO, Yucai ZHANG, Xiaohui WANG, Quan YANG
《环境科学与工程前沿(英文)》 2013年 第7卷 第3期 页码 395-402 doi: 10.1007/s11783-012-0417-8
关键词: microwave catalytic oxidation CuO/zeolite catalyst silicon carbide (SiC) toluene
基于LiNbO3/SiO2/SiC异质结构实现44 GHz超高频声表面波谐振器 Article
周剑, 张定红, 刘炀辉, 卓凤玲, 钱莉荣, 李红浪, 傅永庆, 段辉高
《工程(英文)》 2023年 第20卷 第1期 页码 112-119 doi: 10.1016/j.eng.2022.05.003
谷清,杨新兴,李云生
《中国工程科学》 2005年 第7卷 第1期 页码 41-44
对颗粒物面源模式做了深入研究,确定了颗粒物粒子面源开始沉降的位置。颗粒物粒子在面源内部不考虑沉降问题,面源源块内颗粒物浓度等于单位面积污染物源强与地面反射系数之积除以地面风速。面源源块外面开始考虑粒子沉降,采用虚点源后置法,参考颗粒物点源的部分反射倾斜烟云模式,全面给出了面源的颗粒物模式。面源边缘浓度采用线性内插方法处理,以免计算结果不连续。面源中心点位置应该在水平x,y方向平移一个微小距离,以消除计算点和面源中心点重合的可能。
标题 作者 时间 类型 操作
Application of grey-taguchi method for optimization of dry sliding wear properties of aluminum MMCs
Rajesh SIRIYALA, Gopala Krishna ALLURU, Rama Murthy Raju PENMETSA, Muthukannan DURAISELVAM
期刊论文
Design and mechanism insight on SiC quantum dots sensitized inverse opal TiO with superior photocatalytic
期刊论文
Atmospheric heterogeneous reaction of chlorobenzene on mineral -FeO particulates: a chamber experiment
期刊论文
Effect of process parameters on the density and porosity of laser melted AlSi10Mg/SiC metal matrix composite
Omotoyosi H. FAMODIMU, Mark STANFORD, Chike F. ODUOZA, Lijuan ZHANG
期刊论文
A 14-year measurement of toxic elements in atmospheric particulates in Hong Kong from 1995 to 2008
Wei NIE,Tao WANG,Aijun DING,Xuehua ZHOU,Wenxing WANG
期刊论文
CuO/zeolite catalyzed oxidation of gaseous toluene under microwave heating
Longli BO, Jianbo LIAO, Yucai ZHANG, Xiaohui WANG, Quan YANG
期刊论文