Sensor and Measuring Systems
Nowadays almost every object of our daily life has a functional coating. The coating not only determines the appearance, but also influences properties such as scratch resistance or corrosion resistance. In order to ensure the quality of coatings, certain limit values, for example for thickness, homogeneity, material composition and adhesion properties, must be observed. In the past, these properties could only be determined inaccurately and in individual samples, which often led to coatings being applied too thickly to minimize defects, thus wasting material.
Lock-in thermography is a relatively new, non-destructive and non-contact testing method. In this method, a surface is thermally excited by heat flows that change over time, and the heat radiation thus induced is converted by infrared sensors into electrical signals, digitized and finally evaluated using computer algorithms. In this way, discontinuities in the near-surface area of components can be visualized, whereby the depth range can be varied via the modulation frequency.
At the ICP this method has been further developed for several years. In cooperation with the industrial partners J. Wagner, Sulzer Metco and AkzoNobel, the CoatMaster for measuring coating thickness and thermal coating resistance has been developed. The CoatMaster is commercialized by the ICP spin-off coatmaster AG. The ICP also uses lock-in thermography to detect skin diseases. The resulting patented "Dermolockin" process is to be commercialized via a further ICP spin-off.
Here you will find a description of selected projects.