레일 도포 차열 도료 두께에 따른 초음파 전파 특성 연구

초록

High-speed rail is rapidly expanding worldwide given the stability and punctuality of logistics and passenger transportation. However, global warming and rapid climate change have resulted in rail safety concerns that can increase the risk of accidents. In particular, in the case of high-speed trains, the deformation of the rail track can cause serious problems that can lead to severe accidents. To solve the problem of rail deformation that can occur in high-temperature environments, a thermal insulation paint was developed previously. However, ultrasonic inspection characterization was not performed in the rail defect diagnosis according to the application of the thermal barrier coating. Accordingly, an evaluation was conducted in this study. The ultrasonic wave propagation characteristics and defect diagnosis characteristics were evaluated and analyzed according to the thermal insulation coating thickness. In the experiment, the diagnostic characteristics were analyzed for each frequency according to the coating thickness. The results indicate that this technology can be used for diagnosis in the field.

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