光纤法-珀传感器在飞机发动机叶片裂纹检测中的应用  

Detecting Crack of Aircraft Engine Blade Based on Optical Fiber F-P Sensor

作　　者：单宁[1] 史仪凯[1] 刘霞[1] 

机构地区：[1]西北工业大学机电学院,西安710072

出　　处：《无损检测》2009年第3期206-207,216,共3页Nondestructive Testing

基　　金：国家自然科学基金资助项目(50275125);航空科学基金资助项目(2007ZE53050)

摘　　要：基于光干涉原理确定初始法-珀腔长度,设计了光纤法-珀干涉仪,建立了非接触式光纤法-珀激光超声试验装置,用于探测飞机发动机叶片的裂纹。光纤法-珀传感器使用单根光纤实现多束光干涉测量,制作简单,成本低,能快速、有效地实现非接触叶片表面裂纹检测。Based on interference principle of light, the length of Fabry-Perot cavity and an optical fiber F-P interferometer was obtained. The contactless type laser ultrasound experimental system of optical fiber was established and used for detecting the crack of aircraft engine blade. The optical fiber F-P sensor realized many bundle lights interference measurement using single optical fiber, which was easy to fabricate and with low cost, as well. It could detect the crack of blade efficiently, fast and contactlessly.

关 键 词：激光超声 光纤法-珀传感器 发动机叶片 裂纹检测 

分 类 号：TG115.28[金属学及工艺—物理冶金]