Home – Home – Jornals – Avtometriya 2005 number 6

The possibility of using infrared detectors to detect defects such as through-the-thickness cracks in rail-wheel disks is considered. The proposed method is based on observing the temperature distribution evolution during metal heating by means of an infrared microbolometric camera. A through-the-thickness crack is experimentally observed in the infrared wavelength range while propagating in the wheel a heat flow initiated by an external heat source. Results of mathematical modeling of this process are in good agreement with experimental results. The possibility of developing a method to detect defects of wheels at static state is shown.