적외선카메라를 이용한 제동 디스크 열크랙 분석

Hot Spot Analysis on Brake Disc Using Infrared Camera

  • 김정국 (한국철도기술연구원, 철도시스템연구본부) ;
  • 구병춘 (한국철도기술연구원) ;
  • 권성태 (한국철도기술연구원)
  • 발행 : 2008.06.12

초록

Infrared thermography using high-speed infrared camera has been recognized as a powerful method for various potential applications, such as nondestructive inspection, failure analysis, stress analysis, and medical fields, due to non-contact, high-speed, and high spatial resolution at various temperature ranges. In this investigation, damage evolution due to generation of hot spots on railway brake disc was investigated using the infrared thermography method. A high-speed infrared camera was used to measure the surface temperature of brake disc as well as for in-situ monitoring of hot spot evolution. From the thermographic images, the observed hot spots and thermal damage of railway brake disc during braking operation were qualitatively analyzed. Moreover, in this investigation, the previous experimental and theoretical studies on hot spots phenomenon were reviewed, and the current experimental results were introduced and compared with theoretical prediction.

키워드