Eddy current thermography is a new NDT-technique for the detection of cracks in electro conductive materials. It combines the well-established inspection techniques of eddy current testing and thermography. The technique uses induced eddy currents to heat the sample being tested and defect detection is based on the changes of induced eddy currents flows revealed by thermal visualization captured by an infrared camera. The advantage of this method is to use the high performance of eddy current testing that eliminates the known problem of the edge effect. Especially for components of complex geometry this is an important factor which may overcome the increased expense for inspection set-up. The paper presents the possibility of applying eddy current thermography method for detecting defects in ballistic covers made of carbon fiber reinforced composites used in the construction of military vehicles.
Waldemar Swiderski, "Non-destructive testing of composite materials used in military applications by eddy current thermography method," Proc. SPIE 9987, Electro-Optical and Infrared Systems: Technology and Applications XIII, 998705 (Presented at SPIE Security + Defence: September 28, 2016; Published: 21 October 2016); https://doi.org/10.1117/12.2240434.
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