Damage analysis and monitoring measures of compressor blades of an aero engine
摘 要
针对发动机在服役过程中,压气机叶片因外物打伤而产生裂纹、掉块等缺陷的问题,运用基于断口分析和能谱分析的失效分析方法,查明了导致发动机压气机叶片损伤的机理和根本原因,提出了集内窥检测和涡流检测于一体的监控对策。通过检测试验分析了叶片损伤图像和检测信号的典型特征,找出了缺陷的涡流信号显示与实际缺陷大小的对应关系,为准确可靠地定量判断叶片损伤提供了基准。
Abstract
During the service of the engine, the compressor blades are damaged by foreign objects, resulting in cracks, falling blocks and other defects, this paper uses the failure analysis method based on fracture analysis technology and energy spectrum analysis technology to find out the mechanism and root cause of compressor blade damage, and puts forward the integrated endoscopic detection and eddy current detection in one monitoring strategy. The typical characteristics of blade damage image and damage detection signal are analyzed through inspection test, and the corresponding relationship between eddy current signal display of defect and actual size is found out, which provides a reference for accurate and reliable quantitative judgment.
中图分类号 TG115.28 DOI 10.11973/wsjc202101005
所属栏目 试验研究
基金项目
收稿日期 2020/5/20
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网络出版日期
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联系人作者张海兵(ndt_zhb@126.com)
备注张海兵(1979-),男,硕士,副教授,主要从事飞机损伤检测与评价工作
引用该论文: ZHANG Haibing,ZHANG Taifeng,GUO Qi. Damage analysis and monitoring measures of compressor blades of an aero engine[J]. Nondestructive Testing, 2021, 43(1): 15~18
张海兵,张泰峰,郭奇. 航空发动机压气机叶片损伤分析与监控对策[J]. 无损检测, 2021, 43(1): 15~18
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参考文献
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