A concept of technology for non-destructive testing of modernized freight cars based on analysis of their vibration

Paper presents a part of research concerning freight cars modernization. The main causes of damage of freight cars plating are chemical interactions of the carried material and the car body as well as mechanical damages. The introduced structural change consists in the use of composite panels to protect the steel plating of a car body. Therefore, it is necessary to carry out a series of studies. In this paper results of virtual simulations of the freight car vibration during its motion as well as verification of a possibility to create a method to verify technical condition of the freight car during its exploitation based on excited vibrations are presented.