摘要
疲劳失效是工程结构和材料科学研究领域都十分关注的问题。研究疲劳损伤机制对于解决工程结构疲劳失效问题是很重要的。应用断裂力学理论研究工程结构的疲劳问题已取得了显著的成果,随着声发射技术研究的深入,将二者结合起来必将成为疲劳问题研究的更有效方法之一。阐述了国内外采用声发射技术对工程结构疲劳裂纹损伤监测中的声发射源机制状况的研究,展望了声发射技术结合断裂力学在该领域的应用前景。
Along with the great achievements in the treatments of structural fatigue problems by means of fracture mechanics and the development of acoustic emission technique,it is naturally more beneficial to develop an approach combining the both to monitor structural damage in engineering.Studies on the contributions on the source mechanism of AE activity and continuous monitoring of the engineering structural damage process at home and abroad are reviewed.Some future research topics regarding the combined use of fracture mechanics and acoustic emission technique in engineering structures are outlined.
出处
《振动与冲击》
EI
CSCD
北大核心
2007年第6期157-161,共5页
Journal of Vibration and Shock
基金
国家自然科学基金资助项目(项目编号50479060)
关键词
疲劳裂纹
声发射技术
声发射源机制
fatigue crack,acoustic emission(AE)technique,the source mechanism of acoustic emission
