材料期刊网

An estimation of stress intensity factor in a clamped SE(T)specimen through numerical simulation and experimental verification: case of FCGR of AISI H11 tool steel

Masood Shah , Catherine Mabru , Farhad Rezai-Aria , Ines Souki , Riffat Asim Pasha

金属学报(英文版)

关键词:

An estimation of stress intensity factor in a clamped SE(T) specimen through numerical simulation and experimental verification: case of FCGR of AISI H11 tool steel

Masood Shah , Catherine Mabru , Farhad Rezai-Aria , Ines Souki , Riffat Asim Pasha

金属学报(英文版)

A finite element analysis of stress intensity factors (K _I) in clamped SE(T) _C specimens (dog bone profile) is presented. A J-integral approach is used to calculate the values of stress intensity factors valid for 0.125 ≤a/W≤0.625. A detailed comparison is made with the work of other researchers on rectangular specimens. Different boundary conditions are explored to best describe the real conditions in the laboratory. A sensitivity study is also presented to explore the effects of variation in specimen position in the grips of the testing machine. Finally the numerically calculated SIF is used to determine an FCGR curve for AISI H11 tool steel on SE(T) _C specimens and compared with C(T) specimen of the same material.

关键词: Fatigue crack propagation , null , null , null

二极管激光器阵列微通道冷却实验研究

李志刚 , 淮秀兰 , 陶毓伽 , 王立

工程热物理学报

5 W/cm2的界面热流密度.实验结果还验证了Shah和London提出的表观阻力系数关联式、用于预测平均努谢尔数的Sieder-Tate关联式以及Shah&London关联式.

关键词: 微通道 , 流动阻力 , 传热特性 , 激光器热管理