한국해양대학교

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자기누설 탐상법에 위한 비파괴검사 시스템 개발에 관한 연구

Title
자기누설 탐상법에 위한 비파괴검사 시스템 개발에 관한 연구
Alternative Title
A Study on the Development of a Non-Destructive Test System by a Magnetic Flux Leakage Method
Author(s)
朴垠植
Publication Year
2002
Publisher
한국해양대학교
URI
http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002173997
http://repository.kmou.ac.kr/handle/2014.oak/9997
Abstract
In this research, the development of a Non-Destructive Test (NDT) system by a Magnetic Flux Leakage(MFL) method is presented.


The detection of a crack or defect of a gas pipe is very important in management of a gas pipe. The sensing equipment, so called PIG, is commonly used to detect defects of the underground gas pipe. The system is consisted of magnetic yoke, Hall sensors and gas pipe.


in the system, the magnetic field produced in permanent magnet is guided to the gas pipe by brush and magnetic yoke. The Hall sensors detect the leakage flux in the region of defects such as crack, corrosion, wrinkle, buckle and so on.


The defect signals in a MFL type NDT system mainly depend on the change of the magnetic leakage flux in the region of a defect. So, the optimum system was designed to maximize the magnetic leakage flux in that region and the results are compared with experimental measurements.
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전기공학과 > Thesis
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000002173997.pdf Download

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