材料期刊网

EFFECT OF GRAIN BOUNDARY ON FATIGUE BEHAVIOUR OF Al BICRYSTALS

LI Qingsheng , (Chingshen Li)Taiyuan University of Technology , Taiyuan , China T.BRETHEAU Laboratory PMTM , CNRS , University Paris Nord Dept.of Mathematics and Mechanics , Taiyuan University of Technology , Taiyuan 030024 , China

金属学报(英文版)

The effect of grain boundaries on cyclic deformation and fatigue crack growth in aluminum bicrystals has been studied.The effect of a grain boundary is restricted in a narrow area, termed as grain boundary affecting zone(GBAZ),where the incompatible plastic strain treats internal stress which conver...

关键词: compatibility , null , null , null

用DEPT135测定Resol的组成及微细结构参数

杨金瑞 , 余尚先 , 顾江楠

高分子材料科学与工程

通过对resol(羟甲基酚化合物和低分子量羟甲基酚树脂)DEPT135图谱的分析讨论,得到一系列计算resol微细结构参数的经验公式.根据DEPT135图谱可判断是否发生缩聚反...

关键词: 羟甲基酚化合物 , 羟甲基酚树脂 , DEPT135 , 结构参数

钛合金疲劳裂纹扩展速率Paris区中的转折点

马英杰 , 刘建荣 , 雷家峰 , 李玉兰 , 刘羽寅 , 杨锐

金属学报 doi:10.3321/j.issn:0412-1961.2008.08.015

通过对比钛合金不同显微组织下疲劳裂纹扩展速率Paris区转折点的位置,发现原始β晶粒尺寸是影响Paris区转折点位置的主要因素,晶团尺寸以及片层厚度对转折点位置没有影响.并且通...

关键词: 钛合金 , 疲劳裂纹扩展 , Paris区转折点 , 裂纹尖端塑性区尺寸

Ferriere Nord棒卷生产线:工业化运行中的第一台工字轮式卷取设备

钢铁

安装在现有棒材轧机上的Ferriere Nord工字轮式棒材卷取线是Danieli Morgardshammar工字轮式棒材卷取技术在世界上的第一次工业性应用.该项创新工艺是以热轧棒材无扭卷成高度紧凑/超重棒材卷为基础,在喂给下游冷轧生产...

关键词: 工字轮式棒材卷取线 , 无扭卷取 , 无废品开卷 , 高度紧凑的盘卷 , 大重量盘卷

FRACTURE MECHANICS ANALYSIS OF THERMAL STRAIN FATIGUE LIFE FOR THE SINTERING MACHINE PALLET

LI Zhenzi and LI Ming (Department of Architectnre Engineering , Central South University of Technology , Changsha 410083 , China)LIAO Fuchang (Shenzhen School of Technology , Shenzhen 518029 , China)Manuscript received 10 August 1995 , in revised form 12 April 1996

金属学报(英文版)

In recent years elastic-plastic fracture mechanics has developed rapidly and is widely used to solve various engineering problems. The application of elastic-plastic fracture mechanics on the pallet of sintering machine is approached in d...

关键词: : pallet , null , null , null

THERMAL FATIGUE AND FRACTURE MECHANICS ANALYSIS OF GREY CAST IRON

GUO Chengbi ZHOU Weisheng Dalian Institute of Technology , Dalian , Liaoning , China Professor , Dept.of Shipbuilding , Dalian Institute of Technology , Dalian , Liaoning , China

金属学报(英文版)

The in-phase and out-of-phase thermal fatigue,the C-P type and P-C type isothermal fa- tigue of grey cast iron were experimentally studied.The fatigue life was evaluated analytically by using the elastic-plastic fracture mechanics method(mainly J integral).The results ...

关键词: grey cast iron , null , null

Features and states of microscopic particles in nonlinear quantum-mechanics systems

Frontiers of Physics in China

In this paper, we present the elementary principles of nonlinear quantum mechanics (NLQM), which is based on some problems in quantum mechanics. We investigate in detail the motion laws and some main properties of microscopic particles in...

关键词: microscopic particle;nonlinear systems;nonlinear quantum mechanics;basic principle;motion rule;dynamic property;nonlinear Schrodinger;equation

THE PARIS LAW IN METALS AND CERAMICS

Journal of Materials Science Letters

关键词: fatigue-crack-growth;partially-stabilized zirconia;cyclic fatigue;propagation;fracture

DYNAMIC ASPECTS OF LINEAR ELASTIC FRACTURE-MECHANICS APPLIED TO DIELECTRIC-BREAKDOWN

Journal of Physics D-Applied Physics

The dynamic aspects of linear elastic fracture mechanics applied to dielectric breakdown are studied. In the same direction as the fracture mechanics analogue for dielectric breakdown described previously by some researchers, this paper d...

关键词: sio2-films;oxides

Life prediction of ball grid array soldered joints under thermal cycling loading by fracture mechanics method

Hongyuan FANG , Li WANG , Yiyu QIAN

材料科学技术（英文）

Fatigue crack propagation life of ball grid array (BGA) soldered joints during thermal cycling loading was investigated by fracture mechanics approach using finite element analysis. The relationships between the strain energy release rate (G) acid crack size (a), therm...

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