|
|
|
| Inversion Method of Pulsed Eddy Current Detection for Thermal Barrier Coatings Thickness |
| FAN Wenru,CHANG Yong |
| College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300,China |
|
|
|
|
Abstract To measure thermal barrier coatings thickness at the high precision, a pulsed eddy current detection inversion method is proposed. A two-stage processing technique is proposed to preprocess the pulsed eddy current detection signals, and the principal component of the preprocessing signal is extracted by principal component analysis method. Finally, BP neural network is constructed to predict the coatings thickness. The COMSOL modeling and simulation experiment proves that the two-stage processing method can effectively reduce the lift-off effect and distinguish the variations of thickness characteristics. The feature extraction method based on principal component analysis can classify and identify the thickness variations of ceramic layer and bonding layer. The results show that the average relative error of this method is about 0.4% for the thickness of ceramic layer and about 2.6% for the thickness of bonding layer. It can be seen that the inversion accuracy of thermal barrier coatings thickness by the mentioned method is higher.
|
|
Received: 28 June 2023
Published: 06 June 2024
|
|
|
|
|
|
| ［13］ |
周德强, 张斌强, 田贵云, 等. 脉冲涡流检测中裂纹的深度定量及分类识别 ［J］. 仪器仪表学报, 2009,30 (6): 1190-1194.
|
| ［18］ |
黄平捷, 吴昭同, 郑建才, 等. 多层厚度电涡流检测反演算法及实验研究 ［J］. 仪器仪表学报, 2005, 26 (4): 428-432.
|
| ［1］ |
THAKARE J G, PANDEY C, MAHAPATRA M M, et al. Thermal barrier coatings—A state of the art review ［J］. Metals and Materials International, 2021, 27 (7): 1947-1968.
|
| ［2］ |
常蕾, 王毅. 热障涂层不同红外热无损检测方法研究 ［J］. 计量学报, 2015, 36 (6A): 72-75.
|
| ［5］ |
周莹, 金合丽, 陈友荣, 等. 多层导电结构缺陷位置和尺寸的无损估计方法研究 ［J］. 传感技术学报, 2021, 34 (5): 642-649.
|
| ［9］ |
王安泉, 孙国健, 孙亮, 等. 基于曲面拟合的脉冲涡流测厚方法 ［J］. 无损检测, 2021, 43 (4): 51-56.
|
| ［19］ |
谢建红, 石剑, 习小文, 等. 基于 BP 算法的热障涂层厚度反演研究 ［J］. 兵器装备工程学报, 2021, 42 (4): 228-232.
|
| ［3］ |
LIU Y, LIU S, LIU H, et al. Pulsed eddy current data analysis for the characterization of the second-layer discontinuities ［J］. Journal of Nondestructive Evaluation, 2019, 38 (1): 1-8.
|
| ［6］ |
XU Z, ZHOU Z, CHEN H, et al. Effects of the wire mesh on pulsed eddy current detection of corrosion under insulation ［J］. Nondestructive Testing and Evaluation, 2023, 38 (2): 233-253.
|
| ［7］ |
SUDIMAN S, NATALIA F, SOPHIAN A, et al. Pulsed Eddy Current signal processing using wavelet scattering and Gaussian process regression for fast and accurate ferromagnetic material thickness measurement ［J］. Alexandria Engineering Journal, 2022, 61 (12): 11239-11250.
|
| ［8］ |
朱红运, 王长龙, 王建斌, 等. 圆台状脉冲涡流差分传感器设计 ［J］. 仪器仪表学报, 2014, 35 (12): 2709-2716.
|
| ［4］ |
UNDERHILL P R, KRAUSE T W. Crack detection around raised head rivets in aluminum aircraft structures ［J］. Journal of Nondestructive Evaluation, 2021, 40: 1-8.
|
| ［10］ |
WANG Y, FAN M, CAO B, et al. Measurement of coating thickness using lift-off point of intersection features from pulsed eddy current signals ［J］. NDT & E International, 2020, 116: 102333.
|
| ［11］ |
常海涛, 蔡静, 温悦, 等. 一种基于主成分分析的 TDLAS 高频噪声滤波 ［J］. 计量学报, 2022, 43 (10): 1279-1284.
|
|
CHANG H T, CAI J, WEN Y, et al. A Principal Component Analysis Method for TDLAS to Remove High Frequency Noise ［J］. Acta Metrologica Sinica, 2022, 43 (10): 1279-1284.
|
|
ZHOU D Q, ZHANG B Q, TIAN G Y, et al. Quantification of Depth and Classification of Cracks Using Pulsed Eddy Current Test Technology ［J］. Chinese Journal of Scientific Instrument, 2009,30 (6): 1190-1194.
|
| ［14］ |
HE Y, PAN M, CHEN D, et al. PEC defect automated classification in aircraft multi-ply structures with interlayer gaps and lift-offs ［J］. NDT & E International, 2013, 53 (1): 39-46.
|
| ［16］ |
YU Y, ZHANG D, LAI C, et al. Quantitative approach for thickness and conductivity measurement of monolayer coating by dual-frequency eddy current technique ［J］. IEEE Transactions on Instrumentation and Measurement, 2017, 66 (7): 1874-1882.
|
|
HUANG P J, WU Z T, ZHENG J C, et al. Inversion Algorithms for Multi-layered Thickness Measurement in Eddy Current Testing ［J］. Chinese Journal of Scientific Instrument, 2005, 26 (4): 428-432.
|
|
ZHOU Y, JIN H L, CHEN Y R, et al. Nondestructive Estimation Method of Defect Location and Size for Multilayer Conductive Structure ［J］. Chinese Journal of Sensors and Actuators, 2021, 34 (5): 642-649.
|
| ［12］ |
NAFIAH F, TOKHI M O, SHIRKOOHI G, et al. Decoupling the Influence of Wall Thinning and Cladding Thickness Variations in Pulsed Eddy Current Using Principal Component Analysis ［J］. IEEE Sensors Journal, 2021, 21 (19): 22011-22018.
|
|
XIE J H, SHI J, XI X W, et al. Research on Inversion of Thermal Barrier Coating Thickness Based on BP Neural Network ［J］. Journal of Ordnance Equipment Engineering, 2021, 42 (4): 228-232.
|
|
CHANG L, WANG Y. Study on Thermal Barrier Coatings of Different Infrared NDT Method ［J］. Acta Metrologica Sinica, 2015, 36 (6A): 72-75.
|
|
WANG A Q, SUN G J, SUN L, et al. Pulsed Eddy Current Thickness Measurement Method Based on Surface Fitting ［J］. Nondestructive Testing, 2021, 43 (4): 51-56.
|
| ［17］ |
WANG Z, YU Y. Thickness and conductivity measurement of multilayered electricity-conducting coating by pulsed eddy current technique: Experimental investigation ［J］. IEEE Transactions on Instrumentation and Measurement, 2018, 68 (9): 3166-3172.
|
|
ZHU H Y, WANG C L, WANG J B, et al. Design of a Cone-Shaped Pulsed Eddy Current Differential Sensor ［J］. Chinese Journal of Scientific Instrument, 2014, 35 (12): 2709-2716.
|
| ［15］ |
ZHANG D, YU Y, LAI C, et al. Thickness measurement of multi-layer conductive coatings using multifrequency eddy current techniques ［J］. Nondestructive Testing and Evaluation, 2016, 31 (3): 191-208.
|
|
|
|
2024, Vol. 45 
