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Non-complete relief method for measuring surface stresses in surrounding rocksZHANG Feng-peng(张凤鹏)1, QIU Zhao-guo(邱兆国)2, FENG Xia-ting(冯夏庭)1(1. Key Laboratory of Ministry of Education on Safe Mining... core surface in the relief measurement process. Finally, a non-complete relief method of annular hole-drilling for measuring surface stress in surrounding rocks is proposed and the procedure......
in Cu-18Al-9Mn-3.4Zn(mole fraction, %) were studied by means of X-ray, TEM, SEM and AFM. The results show that the tested alloy has 18R structure and stacking fault substructure. "-/-"-shape surface relief is found in single variants. The height of single relief is 400-500nm and the width is 2000-2400nm; Meanwhile, "N"-shape and "hill"-shape surface relief are found in various variants. The high......
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University of Technology, Tianjin 300130, China) Abstract:Habit plane rotation of lath martensite transformation in Fe-Ni-Mn alloy was predicted by means of Displacement Vector Theory. Its surface relief... strain (IPS); surface relief of lath martensite revealed no character of IPS, i.e. it exhibited irregular "N"-shaped "surface relief packet", and "surface relief packet" was composed of layers of several......
mechanism of several machines. Due to the transmitted torque, spur gears experience high stresses which could cause gear tooth failure by surface pitting or root fracture. Tip relief and other gear profile modification have been considered for reducing the induced stresses in the gear tooth. In this work, the influence of tip relief on stresses on a pair of identical spur gear was analyzed using......
铁基合金中板条马氏体帐篷型表面浮凸位移的定量分析吴静1,刘新新1,顾新福1,戴付志1,杨海涛2,张文征1(1.北京市清华大学材料科学与工程系先进材料实验室2.清华大学 清华-富士康纳米科技研究中心)摘 要:表面浮凸伴随着丰富的相变晶体学信息,对板条马氏体表面浮凸的形状应变进行研究,可以获得相变过程中累积的长程应变场的晶体学信息,进而实现对相变应变场和界面结构的准确描述.本文对Fe-20.2Ni-5.5Mn(质量分数,%)合金中板条马氏体表面浮凸进行系统地定量表征,并借鉴双面金相位移合成法合成单面样品浮凸的位移矢......
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Relief Canyon金矿的堆浸马洪彦摘 要:<正> Lacana黄金公司,在1934年10月9日正式宣布Relief Canyon露天金矿投产,该矿位于美国内华达州(?)欣县以东32公里,初期,年产矿石一百万吨,年产黄金762公斤.该工程按计划投产,而且费用未超出预算.1982年10月Lacana公司完成了地质研究,检查,分析和试验工作,1983年完成了圈定矿体的15250米的钻探计划;对两个4360吨关键词:......
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卸压煤层气; 地面井; 产能; 影响因素; 淮南矿区; mining; remote pressure relief coalbed methane; surface well; productivity; impact factors; Huainan coal mining area; [全文内容正在添加中] ......