文献类型：期刊文献

英文题名：Creep damage and interaction behavior of neighboring notches in components at elevated temperature

作者：Gong, Jian-Guo[1];Guo, Sai-Sai[1];Gao, Fu-Hai[1,2];Niu, Tian-Ye[1];Xuan, Fu-Zhen[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, MOE, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]China Inst Atom Energy, Beijing 102413, Peoples R China

年份：2021

卷号：256

外文期刊名：ENGINEERING FRACTURE MECHANICS

收录：;EI(收录号：20213810911353);WOS:【SCI-EXPANDED(收录号:WOS:000701679800005)】；

基金：Supports from National Natural Science Foundation of China (Grant Nos.: 51605165 and 51835503) are greatly acknowledged.

语种：英文

外文关键词：Creep damage; Notch; Interaction; Stress; Stress tri-axiality

摘要：Previous studies have focused on creep damage evolution behavior of components with one isolated notch, but two or more notches may be placed at the components due to the function requirements, the limitation of the structural size, or may be induced by chemical/physical damage processes. In this work, numerical analyses and creep tests on creep damage and interaction behaviors of neighboring notches in components under creep conditions are investigated. Effects of structural configurations on creep damage and interaction behavior are discussed. Results indicate that the notch still indicates a strengthening effect on rupture life of components despite the interaction behavior of the two adjacent notches. A negative interaction effect on rupture life of components with two notches is found. Creep damage and interaction behaviors of the components with two neighboring notches of various distance values are related to structural configurations of the components, including notch acuity ratio, notch open angle and notch depth.