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J. Cent. South Univ. (2019) 26: 1794-1806 DOI: https://doi.org/10.1007/s11771-019-4134-3 Limit variation analysis of shallow rectangular tunnels collapsing with double-layer rock mass based... theorem of limit analysis, the progressive collapse of shallow rectangular tunnels with double-layer rock mass has been theoretically analyzed based on the three-dimensional (3D) velocity discontinuity......
Influence of tool deflection on micro channel pattern of 6:4 brass with rectangular tool Tae-Jin JE, Kang-Won LEE, Sang-Cheon PARK, Jae-Gu KIM, Doo-Sun CHOI, Kyoung-Taik PARK, Kyung... of the cutting tool and pattern structure. And also in micro channel pattern, it is impossible to apply over-depth process in machining of other micro pattern such as prism and rectangular pattern......
Heat transfer performance of flat plate pulsating heat pipe with double sides rectangular or triangular channel XIAHOU Guo-wei1, YANG Cai-yun1, CHEN Lan-lan2 (1. College of Energy and Dynamic... pipe (PHP) with double sides triangular and rectangular channel were studied. The results show that these two kinds of the PHP can work stably and have good thermal performance. However, the heat......
analysis on wrist pin bore of aero-piston kerosene engine PAN Zhongjian1, 2, HE Qinghua1, 3, DENG Yu1, 2 (1. School of Mechanical and Engineering, Central South University, Changsha 410083, China; 2...: By establishing mechanics-mathematical model of wrist pin bore installed in aero-piston kerosene engines, the force created by thread connection position between piston crown and piston skirt was analyzed......
) Abstract: The water-bearing borehole can cause a series of problems in the process of medium-length bore blasting in opencast such as the difficulty in loading explosive power, misfire and poor effect... increase to 85% and the consumption of blasting explosives reduce by more than 7% due to the surplus bottom water cushion. Key words: explosive cartridge blasting drainage; medium-length bore; theoretical......
Trans. Nonferrous Met. Soc. China 30(2020) 1478-1490 Synergistic effect of CeCl3 and benzotriazole on corrosion resistance of naturally aged and artificially aged AA2024 aluminium alloy Bore JEGDIC.... Intermetallic phases in aluminum alloys and their roles in localized corrosion [J]. Journal of Electrochemical Society, 2018, 165: C807-C820. CeCl3和苯并三唑对自然时效和人工时效AA2024铝合金耐蚀性的协同效应 Bore JEGDIC, Biljana BOBIC......
Trans. Nonferrous Met. Soc. China 23(2013) 931-941 Corrosion behaviour of thixoformed and heat-treated ZA27 alloys in NaCl solution Biljana 1, Jelena BAJAT2, Zagorka 2, Ilija 3, Bore 1 1... BAJAT2, Zagorka 2, Ilija 3, Bore 1 1. Institute ″″, University of Belgrade, Milana 35, 11000 Belgrade, Serbia; 2. Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11120......
ω扫描和φ扫描在薄膜结构表征中的应用秦冬阳1,2,卢亚锋2,张孔3,刘茜3,周廉21. 西安交通大学金属材料强度国家重点实验室2. 西北有色金属研究院3. 中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室摘 要:X射线衍射作为一种无损检测手段已经广泛应用于薄膜材料的结构分析和相分析.ω扫描和φ扫描都基于布拉格方程,可以对薄膜材料丝织构和面内织构进行表征.着重阐述了这两种扫描方式的X射线衍射几何,相关原理和在X射线四圆衍射仪实验过程中的实验参数设置,并介绍了它们的适用范围.最后列举了两种方法在金属......
金属钕产业近况扫描 谢丽英1,张华1 (1.包头稀土研究院,内蒙古包头,014030) 摘要:综述了金属钕产业科研发展近况,介绍了金属钕产业的生产现状.对金属钕和镨钕金属的近期价格走势进行了探析,并对金属钕产业今后的发展趋势进行了分析. 关键词:金属钕; 镨钕; 产业; 现状; [全文内容正在添加中] ......
地形图扫描文件的纠正方法 魏春生1 (1.中勘冶金勘察设计研究院有限责任公司,河北·保定,071069) 摘要:该文提供一种地形图扫描文件的纠正方法,可使变形的位图获得纠正.地形图扫描文件的变形是图纸的收缩变形和扫描过程中变形的总和.该文采用的变形纠正数学模型与航测中改正像点坐标系统误差的数学模型相同.实践证明该方法可行. 关键词:地形图; 位图; 象素; 扫描文件; 像点坐标; [全文内容正在添加中] ......