航空发动机涡轮叶片裂纹涡流检测仿真及试验研究  

Simulation and Experimental Research on the Crack of the Aeroengine Turbine Blade with Eddy Current Testing

作　　者：张丽攀[1] 宋凯[1] 王冲 王婵 李轶名 赵志忠 ZHANG Li-pan;SONG Kai;WANG Chong;WANG Chan;LI Yi-ming;ZHAO Zhi-zhong(Key Laboratory of Nondestructive Testing(Ministry of Education),Nanchang Hangkong University, Nanchang 330063,China;Xi’an Aviation Power Co.. Ltd., Xi’an 710021,China)

机构地区：[1]无损检测技术教育部重点实验室(南昌航空大学),南昌330063 [2]西安航空动力股份有限公司,西安710021

出　　处：《南昌航空大学学报（自然科学版）》2018年第3期35-42,共8页Journal of Nanchang Hangkong University(Natural Sciences)

基　　金：国家自然科学基金(51265041);国家重大科学仪器设备开发专项(2013YQ140505);航空科学基金(GA201708257);无损检测技术教育部重点实验室开放基金(EW201708252);江西省研究生创新专项基金(YC2017-S338)

摘　　要：针对航空发动机涡轮叶片裂纹涡流检测建立ANSYS三维有限元仿真模型,研究了激励频率、激励信号电压、线圈平均半径和线圈匝数对线圈感应电动势的影响;根据仿真结果设计研制了一种前端尺寸小、灵敏度高的差动式涡流传感器,利用研制的五轴联动涡流检测系统开展了涡轮叶片表面裂纹缺陷的检测试验。通过分析对比试验和仿真结果,发现研制的差动式涡流传感器可以有效地实现对涡轮叶片表面裂纹缺陷的检测和判别,对涡轮叶片类复杂曲面金属零件裂纹的涡流检测具有一定的现实借鉴意义。A three-dimensional finite element about the aero-engine turbine blade crack detection with eddy current testing is established for researching the influence of excitation frequency,excitation voltage,the average radius of coil and coil number of turns of coil to the induced electromotive force. According to the results of simulation,a differential eddy current sensor with small front-end and high sensitivity is designed. With the five-axis linkage eddy current testing system,the tests of surface crack defects of the turbine blade is conducted. By analyzing and contrasting the results of the experiment and the simulation,it can be found that the differential eddy current sensor can effectively realize the turbine blade surface crack defect detection and evaluation. This paper has a certain practical and reference significance for detection the cracks on complex curved surface crack in metal parts like the turbine blade with eddy current testing.

关 键 词：涡轮叶片 有限元仿真 涡流传感器 裂纹检测 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]