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element method; stress; crack; J-integral CLC number: TG17 Document code: A J-integral at the interface between the bond......
STUDY ON DYNAMIC J-INTEGRAL OF MECHANICAL HETEROGENEOUS WELDED JOINT D.Zhang1,X.Y.Li2,F.Q.Tian1,Y.W.Shi2,D.Y.He2 (1.Institute of Composite Materials, Shanghai Jiaotong University, Shanghai 200030... great effect on dynamic fracture behaviour of welded joints. In the present investigation, dynamic response curve and dynamic J-integral of practical undermatched welded joint and whole base and whole......
STUDY ON THE RELATIONSHIP BETWEEN J-INTEGRAL AND COD Y. G. Cao1,X. Y. Sun1,K. Tanaka2 (1.Department of Engineering Mechanics, College of Architecture and Transport and Storage Engineering, China University of Petroleum, Dongying 257061, China;2.Department of Mechanical Systems Engineering, Toyama Prefectural University,Toyama 939-0398, Japan) Abstract:J-integral and crack opening displacement......
RELATIONSHIP BETWEEN J-INTEGRAL AND FRACTURE SURFACE AVERAGE PROFILE K.Tanaka1,S.F. Xue2,Y.G. Cao2 (1.Department of Mechanical Systems Engineering, Toyama Prefectural University, Toyama 939-0398... that led to the formation of cracks in materials, a novel method that only considered the fracture surfaces for determining the fracture toughness parameters of J-integral for plain strain was proposed......
CLC─I/Ⅱ型除尘除氡子体净化器何平云锡公司摘 要:CLC─I/Ⅱ型除尘除氡子体净化器由云南锡业公司与东北工学院共同研究成功的CDC─I/Ⅱ型除尘除氧子体净化器,自1990年在北京通过了由中国有色金属工业总公司组织的专家鉴定,经云南省部份有色系统矿山单位使用后,反映良好,目前已销售出近百台.该产品荣获...关键词:......
L/min的流速下(线速度为0.265 mm/s)分离烷基苯类化合物时,柱效高达4100056000 plates/m,该整体柱重现性良好,连续运行的重现性(RSD)低于1.2%.在亲水/离子交换色谱模式下,该整体柱可应用于核苷和碱基的高效分离.关键词:磺酸甜菜碱;两性离子亲水整体柱;制备;毛细管液相色谱(cLC);......
界面自旋翻转对有限尺寸的铁磁体/非磁性半导体/铁磁体体系自旋注入的影响 张铭1,米仪琳1,严辉1 (1.北京工业大学材料科学学院,北京,100122;2.北方工业大学理学院,北京,100144) 摘要:本文考虑了界面自旋翻转效应后对有限尺寸的铁磁体/非磁性半导体/铁磁体异质结中的自旋注入问题进行了系统的理论探讨.由于自旋在两种介质界面上发生的翻转散射,自旋极化流的每一个分量在界面上都不可能连续.计算结果表明,当自旋注入效率从0增加到100%的过程中,铁磁体/非磁性半导体/铁磁体异质结的隧穿磁阻增大了两个数量级.这一事实证明界面的自旋翻转效应直接影响着铁磁体/非磁性半导体/铁磁体异质结的隧穿磁阻. 关键词:自旋注入效率; 有限尺寸; 自旋翻转散射; spin injection efficiency; finite width; spin-flip scattering CLC......
thickness under spherical indentation are investigated within the framework of linear fracture mechanics. The J-integral associated to such cracks was computed. The evolution of J-integral vs the crack length and the indentation depth was studied. The effects of the interlayer, the coating and the substrate on the J-integral evolution were discussed. The results show that a suitable metallic interlayer......
提高CMP抛光垫修整性能的方法S.Dhandapani,C.C.Garretson,S.S.Chang,J.G.Fung,S.TsaiApplied Materials,Inc.摘 要:抛光垫修整臂的新设计能在抛光垫和修整盘对使用寿命期间,采用闭环控制(CLC)提高修整性能.测得的抛光垫修整器的力矩用于在现场实时监控修整和抛光过程.通过调节修整器的下压力以补偿工艺的偏移(例如,随修整盘老化而引起的金刚石研磨性的损失),CLC系统在整个抛光垫使用寿命期间维持工艺性能.关键词:......
. The crack propagation rate depends on the strain range and the strain rate. The adaptation of J-integral value for Sn–5Sb solder is also discussed. J-integral value is a suitable parameter for crack......