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Effect of extrusion ratio on coating extrusion of Pb-GF composite wire by numerical simulation and experimental investigation WANG Xin(王 欣), SUN Hong-fei(孙宏飞), FANG Wen-bin(房文斌) School...; Abstract: The extrusion ratio is one of the key parameters for manufacturing......
system by studying the electromagnetic (EM) wave propagation within the human body. A wireless capsule endoscopy transmission channel model is constructed to serve the purpose of investigating signal... propagation; signal attenuations; positioning; transmission channel 1 Introduction The history of using endoscopes to examine human internal organs can be referenced back to the 19th century [1] when......
J. Cent. South Univ. Technol. (2007)01-0007-06 DOI: 10.1007/s11771-007-0002-7 Ratio of Fe-Al compound..., Anshan 114014, China) Abstract: The ratio of Fe-Al compound at the bonding interface of solid steel plate to Al-7graphite slurry was used to characterize the interfacial structure of steel......
by electron back-scattered diffraction (EBSD) and transmission electron microscopy (TEM). The results show that the T6 treated alloys have high strength and good corrosion resistance with poor ductility... diffraction; transmission electron microscopy 2系Al-Cu-Mg合金具有强度高,密度小,加工成形性及耐热性好等优点,被广泛应用于飞机结构件.这些热处理可强化的合金,在时效过程中会形成大量的析出强化相,可有效地阻碍变形过程中的位错运动,从而增强基体的性能[1].目前,Al-Cu-Mg合金商业应用的热处理工艺主要有T3,T4,T6和T8[2].T3热处理工艺为固溶淬......
state and deformation analysis of plate girders and hinge joint, a conception of using the ratio of relative displacement adjacent to hinge joint and the general deflection of plate girder beam is put... and eccentric loading situation in conventional static loading test of highway bridges, a quantitative assessment method is put forward to evaluate the damage degree and lateral load transmission......
J. Cent. South Univ. (2016) 23: 3079-3084 DOI: 10.1007/s11771-016-3372-x Effects of MgO content and CaO/Al2O3 ratio on surface tension of calcium aluminate refining slag XU Ji-fang(许继芳)1, ZHANG Jie... method at 1823 K. Based on different levels of the MgO content and the mass ratio of CaO to Al2O3, the effects of MgO content and the mass ratio of CaO to Al2O3 on surface tension were investigated......
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. In this work, we reported experimental observation of TBs in zinc (with the c/a ratio of 1.856) at atomic scale using high resolution transmission election microscopy (HRTEM). We found the presence of BP... deformed by rolling were studied using high-resolution transmission electron microscopy (HRTEM) at atomic scale. We found the presence of basal/prismatic (BP/PB) planes serrations on TBs......
by engineering practice. There exist relatively sensitive regions of gear surface accumulated wear while the transmission ratio and gear module are varied. Key words: time varying mesh stiffness; dynamic loads...着传动比的增加,ω12是不断减小并趋近于ω1,与此同时,大齿轮单齿啮合频率也不断减小,从而使得主动齿轮的齿面累积磨损量随着减速比的增加不断减小. 图4 传动比对于齿面累积磨损量的影响 Fig. 4 Effect of transmission ratio on surface accumulated wear 图5 模数对于齿面累积磨损量的影响 Fig. 5......
by considering the geometry and load contact characteristics of double helical gears based on three-dimensional high contact ratio conjugate meshing theory. Firstly, the paths of contact points on tooth... transmission errors of instantaneous contact points were calculated from loaded tooth contact analysis (LTCA) of double helical gears. Then, the normal force of discretized points and the loaded transmission......
