摘要
研究了声波在典型箱形结构中的传播特点,比较了2种布置方式下的线性定位方法,分析了其在焊缝声源定位时的误差,讨论了基于平面定位法的箱形结构声源定位。试验结果表明,箱形结构的准确定位影响因素很多,需要将平面定位方法与线性定位方法等结合起来去实现焊缝处裂纹的定位。
The paper studies the dissemination characteristics of the acoustic wave in the typical box structure,compares the linear positioning method in two kinds of arrangement,analyzes the deviation when using the method to position the acoustic source of the welding seam,and discusses the plane positioning method based box structure acoustic source positioning.The experiment result shows that there are a lot of affecting factors for the precise positioning in box structure,and the positioning for the box structure shall only be realized by combining the plane positioning method and the linear positioning method.
出处
《起重运输机械》
2010年第11期88-90,共3页
Hoisting and Conveying Machinery
关键词
金属结构
声发射
定位
metal structure
acoustic emission
positioning
作者简介
作者：刘志平 地址：湖北省武汉市武昌区和平大道1040号武汉理工大学（余区）物流工程学院 邮编：430063
