复杂结构中裂纹声发射源定位方法的适应性分析  

Adaptive Analysis of Crack Acoustic Emission Source Location of Complex Structure

作　　者：毛汉领[1] 周洁[1] 黄振峰[1] 

机构地区：[1]广西大学机械工程学院,广西南宁530004

出　　处：《水力发电》2007年第2期42-45,共4页Water Power

基　　金：国家自然科学基金项目(50465002);广西自然科学基金项目(桂科基0448014)

摘　　要：声发射技术是一种动态的无损检测技术,在分析声发射源定位方法研究现状的基础上,结合混流式水轮机转轮提出了复杂结构中裂纹声发射源的3种定位方法,即三维时差定位、区域定位、自适应智能定位法,并给出了声发射源定位系统程序的实现方法。在此基础上,对各种定位方法做了适应性分析与比较,为进行混流式水轮机裂纹定位及发展趋势的预估提供了依据。The acoustic emission technology is a dynamic non-defection detection technology. On the basis of analyzing acoustic emission source location method and in combination with the structure of Francis turbine runner, this paper puts forward three methods for locating crack acoustic emission sources in complex structure including three-dimension time difference location, zone location, self-adaptive intelligent location. Computer-aided system for AE location is developed. The adaptive analyses of these location methods are compared, which provides the basis for the pre-evaluation for the crack location of Francis turbine and its development trend.

关 键 词：声发射源定位 混流式水轮机转轮 裂纹 适应性分析 

分 类 号：TG115.28[金属学及工艺—物理冶金]