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High‐Speed Underfilm Corrosion Imaging Using a Terahertz Camera
Author(s) -
FUSE NORIKAZU,
FUKUCHI TETSUO,
MIZUNO MAYA,
FUKUNAGA KAORU
Publication year - 2016
Publication title -
electronics and communications in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.131
H-Index - 13
eISSN - 1942-9541
pISSN - 1942-9533
DOI - 10.1002/ecj.11843
Subject(s) - terahertz radiation , materials science , raster scan , optics , opacity , scanner , laser scanning , optoelectronics , laser , signal (programming language) , physics , computer science , programming language
SUMMARY Nondestructive, two‐dimensional distribution measurement of rusting under opaque anticorrosion coating was carried out, using a terahertz camera, a quantum cascade laser, and a galvanic scanner. The measurement speed of the present method was found to be 11 times faster than the conventional raster scanning method based on time‐domain spectroscopy. A signal‐to‐noise ratio exceeding 10 2 was confirmed for both systems, which enables the detection of minor rusting.