Analysis of the influence of lift-off variation on Eddy-Current images

Author

Ricci, Marco ; Silipigni, Giuseppe ; Ferrigno, Luigi ; Laracca, Marco ; Adewale, Ibukun D. ; Gui Yun Tian

Author_Institution

Dipt. di Ing., Univ. di Perugia, Terni, Italy

fYear

2015

fDate

4-5 June 2015

Firstpage

182

Lastpage

187

Abstract

The development of lift-off invariant strategies is one of the main goals in Eddy Current Non-Destructive Testing research. In this paper various imaging procedures for Eddy Current Testing are analyzed with respect to change of lift-off and tested by varying randomly the lift-off value at every point in a measurement grid. The experimental data, collected with both chirp and multi-frequency excitation, shows that imaging procedures relying on phase analysis are quite insensitive to liftoff variation and then more robust with respect to imaging procedures based on the visualization of amplitude-derived features.

Keywords

aerospace computing; data visualisation; eddy current testing; image processing; aerospace applications; amplitude-derived feature visualization; chirp; eddy current nondestructive testing research; eddy-current image; imaging procedures; lift-off invariant strategies; lift-off variation influence analysis; measurement grid; multifrequency excitation; phase analysis; Decision support systems; Eddy Current Testing; Image Processing; Lift-off invariance;

fLanguage

English

Publisher

ieee

Conference_Titel

Metrology for Aerospace (MetroAeroSpace), 2015 IEEE

Conference_Location

Benevento

Type

conf

DOI

10.1109/MetroAeroSpace.2015.7180650

Filename

7180650