摘要
疲劳小裂纹扩展行为是结构耐久性和损伤容限设计中关心的重要问题。着重对疲劳小裂纹扩展的微观机制、解析描述进行了分析和讨论;并评述了疲劳小裂纹理论在全寿命预测、耐久性分析和裂纹形成/扩展分界等方面的应用。
Fatigue small crack growth behavior is an important issue in structural durability and damage tolerance design.Small-crack theory is reviewed in this paper.Microstructural effects in small crack growth and analytical description of small crack growth rate are emphatically analyzed.Also the applications of small-crack theory to total fatigue life prediction,durability analysis,and crack initiation/propagation demarcation are briefly discussed.
出处
《机械工程材料》
CAS
CSCD
北大核心
2007年第11期6-9,共4页
Materials For Mechanical Engineering
基金
国防"十一五"重点预研资助项目(513270501)
空军工程大学工程学院博士基金资助项目(BC0505
BC06008)
关键词
小裂纹理论
微观机制
裂纹扩展速率
small-crack theory
microstructural effects
crack growth rate
