基于光纤迈克尔逊传感器的水轮机叶片裂纹检测  

Detecting Crack of Turbine Blade Based on Optical Fiber Michelson Sensor

作　　者：郭恒[1] 刘霞[2] 单宁[2] 钱凤臣[3] 

机构地区：[1]华北水利水电学院电力学院,郑州450011 [2]西北工业大学机电学院,西安710072 [3]西安通信学院,西安710106

出　　处：《无损检测》2008年第6期342-343,347,共3页Nondestructive Testing

基　　金：华北水利水电学院青年科研基金(HSQJ2006024)

摘　　要：基于光干涉原理设计了一光纤迈克尔逊(Micheson)干涉仪,确定干涉仪信号臂和参考臂尺寸,建立光纤迈克尔逊激光超声实验装置,用于叶片表面裂纹的检测。实验结果表明,该传感系统制作简单,加工成本低,能快速、有效检测叶片表面裂纹,为研究叶片裂纹的扩展规律提供了实验基础。The turbine blade is a critical component of waterpower generator.In order to real time detect the cracks of blade fast and exactly and to avoid accidents and decrease losses,an optical fiber Michelson interferometer is designed based on interference principle of light.The sizes of signal arm and reference arm are determined.The experimental device of optical fiber Michelson laser ultrasound is established for detecting the crack of turbine blade. The experimental results show this sensor machine simply and...

关 键 词：光纤传感器 迈克尔逊干涉仪 激光超声 水轮机叶片 裂纹检测 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]