中国机械工程2026，Vol.37Issue(7)：1541-1547,7.DOI:10.3969/j.issn.1004-132X.2026.07.001
脉冲调制涡流检测涂层系统的减薄缺陷检出概率分析
Analysis of POD for Pulse-modulation Eddy Current Testing of Thickness Reduction in Coating Systems
摘要
Abstract
This paper addresses the detection of thickness reduction defects in thermal barrier coating(TBC)systems.It compares eddy current testing responses obtained by pulse-modulation waves at differ-ent frequencies with those from corresponding sinusoidal waves via linear regression analysis,demonstrat-ing the advantages of pulse-modulation eddy current testing.A numerical simulation model for coating thin-ning defects in TBC systems is established.Based on the simulation results,three regression models are developed to fit the experimental data,and these models effectively characterize the relationship between the measured signals and defect size.Probability of detection(POD)analysis is performed on the regres-sion results.The detection threshold is determined using the receiver operating characteristic curve,and the POD curve is constructed.The POD analysis results indicate that a 90％POD corresponds to a defect size of 50.62 μm,with a 95％lower-confidence bound.关键词
电磁无损检测/脉冲调制涡流检测/涂层系统/涂层减薄缺陷/检出概率Key words
electromagnetic nondestructive testing/pulse-modulation eddy current testing/coating system/thinning defect/probability of detection分类
矿业与冶金引用本文复制引用
苏冰洁,李勇,王艺融,赵桢,陈振茂..脉冲调制涡流检测涂层系统的减薄缺陷检出概率分析[J].中国机械工程,2026,37(7):1541-1547,7.基金项目
国家自然科学基金(52177007,52311540018) （52177007,52311540018）
科技部磁约束核聚变能发展研究专项(2019YFE03130003) （2019YFE03130003）
