Analysis and Model of Corrosion Wear of Selected Materials Used in Special Vehicles

The paper deals with the evaluation and modelling of corrosion wear of two standard materials used in the construction of special vehicles. The experimental research on corrosion wear involved the testing of two steels, EN 10131 and EN C22R, in a salt spray at 35 and 50 oC for 24, 48, 120 and 144 hours. The model of the process of corrosion degradation of the tested materials uses the results of weight loss of the samples as a function of temperature and exposure time. The diagnostic macroscopic evaluation of corroded surfaces of the tested materials, using graphic (analogue) information of surfaces and its conversion into the digital form, is a completely new technology. The samples were photographed using a CCD camera, then pre-processed, segmented, and masks were created for the logic of deciding what corrosion is and what it is not. The final filtered image was created in binary values where logic 1 refers to a corroded and logic 0 to a non-corroded sample. The MATLAB software environment and the Image Processing Toolbox were used to process the results of the surface evaluation.