Studies of EDDY current probes for inspection of aluminium alloy structure welds using smartphone-based flaw detector

Features of the design and capabilities of the smartphone-based eddy current flaw detector with the EddySmart software application are presented, which in the future can provide a remote inspection with the wireless transmission of inspection results via mobile communication channels for the further analysis and storage. The perspectives of application of eddy current probes (ECP) of double differential type for inspection of structure welds made of aluminium alloys are considered. The characteristics and results of studies of low-frequency double differential MDF 0801 and MDF 1001M type eddy current probes with operational diameters of 8 and 10 mm, respectively, designed for detection of defects in aluminium alloy welds are presented. It is shown that to detect extended and local defects in aluminium alloy structure welds at a greater depth, the preference should be given to the improved eddy current probe of MDF 1001M type with an operational diameter of 10 mm, which provides a higher level of signals and better noise resistance.