Moran’s Index Based Tensor Decomposition for Eddy Current Pulsed Thermography Sequence Processing

2021 ◽  
pp. 1-1
Author(s):  
Libing Bai ◽  
Yiping Liang ◽  
Jinliang Shao ◽  
Yuhua Cheng ◽  
Quan Zhou ◽  
...  
Keyword(s):  
Eddy Current ◽  
Tensor Decomposition ◽  
Pulsed Thermography ◽  
Sequence Processing

Detection of internal defects in CFRP strengthened steel structures using eddy current pulsed thermography

2021 ◽  
Vol 282 ◽  
pp. 122642 ◽  
Author(s):  
Jing Xie ◽  
Changwei Wu ◽  
Lemei Gao ◽  
Changhang Xu ◽  
Yinsheng Xu ◽  
...  
Keyword(s):  
Eddy Current ◽  
Steel Structures ◽  
Internal Defects ◽  
Pulsed Thermography

scholarly journals The early stage wheel fatigue crack detection using eddy current pulsed thermography

2017 ◽  
Author(s):  
Jianping Peng ◽  
Kang Zhang ◽  
Kai Yang ◽  
Zhu He ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Fatigue Crack ◽  
Eddy Current ◽  
Crack Detection ◽  
Early Stage ◽  
Pulsed Thermography ◽  
Fatigue Crack Detection

Review on Non-Destructive Testing Technique of Eddy Current Pulsed Thermography

2015 ◽  
Vol 742 ◽  
pp. 128-131 ◽  
Author(s):  
Jian Min Zhou ◽  
Jun Yang ◽  
Qi Wan
Keyword(s):  
Eddy Current ◽  
Signal Reconstruction ◽  
Infrared Image ◽  
Principal Component ◽  
Research Progress ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Pulsed Thermography ◽  
Pulsed Phase Thermography ◽  
Non Destructive

This paper introduces the theory of eddy current pulsed thermography and expounds the research status of eddy current pulsed thermography in application and information extraction. Thermographic signal reconstruction, pulsed phase thermography, principal component analysis were introuduced in this paper and listed some fusion multiple methods to acquire information from infrared image. At last, it summarizes research progress, existing problem and deelopment of eddy current pulsed thermography.

scholarly journals Detection of Fatigue Microcrack Using Eddy Current Pulsed Thermography

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Xiang Zhang ◽  
Jianping Peng ◽  
Luquan Du ◽  
Jie Bai ◽  
Lingfan Feng ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
Signal Processing ◽  
Eddy Current ◽  
Material Properties ◽  
Principal Component ◽  
Tucker Decomposition ◽  
Pulsed Thermography ◽  
Signal Processing Algorithms ◽  
Microcrack Detection ◽  
Processing Algorithms

Microcracks are a common metallic defect, resulting in degradation of material properties. In this paper, specimens with different fatigue microcracks were detected by eddy current pulsed thermography (ECPT). Signal processing algorithms were investigated to improve the detectability and sensitivity; principal component analysis (PCA) and Tucker decomposition were used to compare the performance of microcrack detection. It was found that both algorithms were highly adaptable. A thermal quotient was used to assess the temperature variation trend. Furthermore, the potential correspondence between crack closure and temperature change was investigated.

An Integrated Approach With Innovative NDTS for Thermal Barrier Coating Assessment: Optical and Frequency Scanning Eddy Current Testing (F-SECT) Combination With Pulsed Thermography

2006 ◽  
Author(s):  
Claudia Rinaldi ◽  
Letizia de Maria ◽  
Federico Cernuschi ◽  
Giampiero Antonelli
Keyword(s):  
Eddy Current ◽  
Gas Turbines ◽  
Current System ◽  
Field Measurements ◽  
Integrated Approach ◽  
Ceramic Coatings ◽  
Thermal Barrier ◽  
Pulsed Thermography ◽  
Damage Level ◽  
The Right

The components of the hot gas path in gas turbines can survive to very high temperatures because they are protected by ceramic Thermal Barrier Coatings (TBC); the failure of such coatings can dramatically reduce the component life. A reliable assessment of the Coating integrity and/or an Incipient TBC Damage Detection can help both in optimising the inspection intervals and in finding the appropriate remedial actions. In this paper the potential of three different NDT techniques applicable to the metallo/ceramic coatings of hot parts are discussed in the light of both results obtained on laboratory aged specimens and in field measurements on operated components. An investigation of the NDTs capability to detect damage evolution was performed on thermal-cycled specimens coated with TBC (both EB-PVD and pseudocolumnar APS) by means of an F-SECT eddy current system, by an innovative portable Piezospectroscopic system and by pulsed thermography. The observation of metallographic sections of the thermal cycled specimens allowed to give the right interpretation to the results of each NDT methodology and enlightened its specific characteristics and potentiality. Moreover in field applicability is discussed for each technique. Finally it is shown how an integrated approach of suitable coating evolution models and complimentary NDT techniques can provide an interesting assessment of the damage level of the metallo/ceramic coatings of operated rotating blades.

Research on microcrack algorithm based on eddy current pulsed thermography

2019 ◽  
Author(s):  
Lingfan Feng ◽  
Xiarong Gao ◽  
Jianping Peng ◽  
Jie Bai ◽  
Hui Yin ◽  
...  
Keyword(s):  
Eddy Current ◽  
Pulsed Thermography
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