The measurement principle is based on impulse thermography, which can differentiate between delamination and rust. The signals differ significantly between adhesion and non-adhesion of a layer, which allows a precise differentiation. The sensor is built into a X/Y machine (approx. 60 x 50 x 50 cm), which allows a grid in 0,15 resolution. The system does not require a removal of the delaminated layers and saves time for preparation, but also reduces the user influence by potential damages on the surface.
It allows a multiple use of the corrosion panels and potentially a repeating weathering of the same sample. There is also a device for automatic panel handling, which leads to a serial handling of the panels. The panels are labelled by barcodes or QR-Codes, which are read by an integrated camera. This makes it possible to match the results to the panel information in the database. Evaluations e.g. according to DIN EN ISO 4628 – 8 contain more information than required.
For example, areas with delamination and no rust can be visualized against areas with rust. This differentiation between delamination and rust can lead to further insights into the corrosion behavior of the system.