Defect depth effects in Pulsed Eddy Current thermography

In recent years, there has been an increasing interest in crack detecting and locating using Pulsed Eddy Current (PEC) thermography. PEC thermographic is an emerging integrative non-destructive testing (NDT) with the ability to inspect defects over large areas. The heating and diffusing results can...

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Bibliographic Details
Published in2011 17th International Conference on Automation and Computin pp. 251 - 254
Main Authors Hong Zhang, Guiyun Tian, Yunze He, Xianzhang Zuo
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2011
Subjects
Coils
Crack-tip
Eddy currents
Finite element modelling
Heating
Inspection
Magnetic fields
Magnetic flux
Materials
NDT
PEC
Thermography
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ISBN1467300004
9781467300001

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Summary:In recent years, there has been an increasing interest in crack detecting and locating using Pulsed Eddy Current (PEC) thermography. PEC thermographic is an emerging integrative non-destructive testing (NDT) with the ability to inspect defects over large areas. The heating and diffusing results can be obtained easily and quickly from a thermal camera. In this paper, numerical modeling and experimental studies are applied to understand depth and tip effect on PEC thermography with different depths of defects, including transient heating propagation and magnetic flux distribution. This fundamental understanding of transient heating propagation and magnetic flux distribution will aid in the development of feature extraction and pattern recognition techniques for the quantitative analysis of PEC thermography images and crack characterisation.
ISBN:1467300004
9781467300001