水轮机转轮叶片表面缺陷的检测方法  

A Measurement Method Applied to Detect the Dfects of the Turbine Blades

作　　者：朱兰斌[1] 周欣荣[1] 宋立新[1] 

机构地区：[1]哈尔滨理工大学测控技术与通信工程学院,黑龙江哈尔滨150040

出　　处：《哈尔滨理工大学学报》2001年第3期30-33,共4页Journal of Harbin University of Science and Technology

摘　　要：为实现对水轮机转轮叶片修补时的自动焊接和打磨，检测出叶片的局部表面缺陷和整体型面曲线，提出了利用计算机图像处理技术、光切法和计算机立体视觉原理进行叶片型面及表面缺陷的捡测方案．实践表明，本方案的实施可极大地提高检测系统的准确度．The turbine blades have very huge stereo curves and their surface is coarse when eroded. There are also a large number of eroded concave holes which have no regular shape. In order to realize its automatic welding and grinding with a repair robot, we need a measurement system to detect the local surface defects and global curves of the blades. And single method can not accomplish the measurement task. We present a measurement method to detect those parameters by use of shearography, the computer imagine piocessing technology and the computer stereo vision technique.

关 键 词：水轮机 表面缺陷 计算机立体视觉 光切法 计算机图像处理 

分 类 号：TK730.8[交通运输工程—轮机工程] TK730.32[动力工程及工程热物理—流体机械及工程]