This article presents an experimental study using an active sensing device that consists of a
miniaturized impedance-measuring chip (AD5933) and a self-sensing macrofiber composite
(MFC) patch to detect corrosion in aluminum structures widely used for aerospace, civil,
and mechanical systems. A simple beam structure made from a 6063 T5 aluminum alloy
was selected for corrosion-detection testing. Four different corrosion cases with two different
locations and two different degrees at each location were artificially inflicted on the
beam using hydrochloric (HCI) acid. To identify the degrees and locations of the corrosion,
the electromechanical impedance-based damage-detection technique using the proposed
active sensing device was investigated. Root-mean-square deviation (RMSD) metric of the
real part of the impedances obtained from the MFC patch was selected as a damagesensitive
feature. Experimental results have verified that the proposed approach can be
an effective tool for detection and quantification of corrosion in aluminum structures.
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