Detecting Crack of Turbine Blade Based on Optical Fiber Michelson Sensor
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。
Abstract
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 have low cost. It can detect the crack of blade efficiently and fast. The results offer the experimental basis for studying the law of cracks expansion.
中图分类号 TG115.28
所属栏目 科研成果与学术交流
基金项目 华北水利水电学院青年科研基金资助项目(HSQJ2006024)
收稿日期 2007/12/19
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备注郭 恒(1980- ),男,硕士,主要从事电力电子,智能化检测研究。
引用该论文: GUO Heng,LIU Xia,SHAN Ning,QIAN FengChen. Detecting Crack of Turbine Blade Based on Optical Fiber Michelson Sensor[J]. Nondestructive Testing, 2008, 30(6): 342~343
郭 恒,刘 霞,单 宁,钱凤臣. 基于光纤迈克尔逊传感器的水轮机叶片裂纹检测[J]. 无损检测, 2008, 30(6): 342~343
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参考文献
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【2】戴 光,徐彦廷.无损检测与评价手册[M].北京:中国石化出版社,2006.
【3】《国防科技工业无损检测人员资格鉴定与认证培训教材》编审委员会.无损检测综合知识[M].北京:机械工业出版社,2005.
【4】苏 琨,任大海,李 建,等.基于激光超声的微裂纹检测技术的研究[J].光学技术,2002,28(6):518-519.
【5】施德恒,陈玉科,孙金峰,等.激光超声技术及其在无损检测中的应用概况[J].激光杂志,2004,25(5):1-4.
【6】陈清明,蔡 虎,程祖海.激光超声技术及其在无损检测中的应用[J].激光与光电子学进展,2005,42(4):53.
【7】Pan XiaoWen, Liang DaKai, Li Dongsheng. Optical fiber sensor layer embedded in smart composite material and structure[J]. Smart Materials and Structures,2006,15(5):1231-1234.
【8】Dhawan Anuj, Muth J F. In-line fiber optic structures for environmental sensing applications[J]. Optics Letters,2006,31(10):1391-1393.
【9】Rajendran Veera P, Deblock Mark, Wetzel Todd, et al. Use of Fiber Optic Based Distributed Temperature Measurement System For Electrical Machines[C]. Proceedings of SPIEThe International Society for Optical Engineering, San Diego CA US,2003,5191:214-225.
【10】毕卫红.高分辨率麦克尔逊光纤应变传感器[J].光学精密工程,2000,8(1):83-86.
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