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- W2023372398 abstract "본 연구에서는 강자성체로 이뤄진 연속체구조물인 철도레일의 내 외부 검사에 적합한 비파괴검사법으로 선행연구를 통해 검증된 누설자속탐상법이 적용되었고, 홀센서와 영구자석을 이용하여 다채널의 누설자속 측정용 자기센서헤드를 제작하였다. 본 기술의 검증을 위해 실험적 연구를 수행하였다. 이를 위해 다양한 타입의 손상이 가공된 6개의 실제 철도 레일을 준비하였고 이를 제작한 누설자속센서헤드를 사용하여 스캔하였다. 실험결과를 통해 수직 및 대각선 방향의 국부손상에 대해서 누설자속 신호가 잘 검출됨을 확인함으로써 본 기법을 이용한 레일시편의 결함 탐상이 가능함을 보였다. 추후, 철도레일에 적합한 장비수송장치 및 IT 기술과의 융합을 통해 보다 철도레일의 결함탐상에 적합하며 효과적인 비파괴 검사법으로 활용 가능 할 것으로 기대 된다. In this study, a magnetic flux leakage (MFL) method which is suitable for the continuum ferromagnetic structure and verified by the previous studies was applied for the rail inspection. A prototype of multi-channel MFL sensor head was fabricated using Hall sensors and permanent magnets. To verify the feasibility of the proposed technique, a series of experiments was performed. 6 real rail specimens with several types of damage were prepared, and scanned by using the MFL sensor head to measure the magnetic flux density of the specimen. In the experimental result, MFL technique can detect successfully the local damage on vertical and diagonal direction. Through the further study, it is expected that MFL based nondestructive evaluation technique can be used effectively for detecting local faults of railroad tracks by convergence of the suitable transportation equipment and IT technology." @default.
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- W2023372398 date "2014-10-31" @default.
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- W2023372398 title "Non-contact Local Fault Detection of Railroad Track using MFL Technology" @default.
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- W2023372398 doi "https://doi.org/10.9798/kosham.2014.14.5.275" @default.
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