Browse > Article
http://dx.doi.org/10.7842/kigas.2011.15.2.027

Defect Length Estimation Using SQI for Underground Gas Pipelines  

Kim, Min-Ho (Graduate School of Electrical Engineering and Computer Science, Kyungpook National University)
Choi, Doo-Hyun (School of Electronics Engineering, Kyungpook National University)
Publication Information
Journal of the Korean Institute of Gas / v.15, no.2, 2011 , pp. 27-32 More about this Journal
Abstract
In this paper a new defect length estimation algorithm using SQI(self quotient image) is presented for the MFL(magnetic flux leakage) inspection of underground gas pipelines. Gas pipelines are magnetized by the permanent magnets of the MFL PIG(pipeline inspection gauge) when the PIG runs through pipelines. If defects or corrosions exist in the pipeline, magnetic leakage flux is increased. The MFL signals measured by hall sensors are analyzed to estimate defect length using SQI. For 74 real defects carved in KOGAS pipeline simulation facility(KPSF) the accuracy of defect length estimation of the proposed algorithm was compared with that of conventional methods.
Keywords
MFL; gas pipeline; pipeline defect; defect length estimation; SQI;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Haitao Wang, Stan Z Li and Yangsheng Wang, "Face Recognition under Varying Lighting Conditions Using Self Quotient Image", Proc. IEEE International Conference on automatic Face and Gesture Recognition, 819-824, (2004)
2 백종현, "덴트결함을 갖는 저합금 탄소강 천연가스 배관의 건전성 평가에 관한 연구", 성균관대학교 대학원 박사학위 논문, (2009)
3 지식경제부령, "고압가스 안전관리법 시행규칙", 지식경제부(에너지안전과), 제169호 , 2011년 1월.
4 J. Sutherland and S. Clouston, "Advances in magnetic flux leakage measurement and inspection for metal loss in pipelines", 3rd International Conference on Pipe Rehabilitation and Maintenance, Abu Dhabi, UAE, (1999)
5 Shujuan Wang, Lei Kang, Penghao Xin and Guofu Zhai, "Characteristic research and analysis of EMAT's transduction efficiency for surface detection of aluminum plate", ICEMI International Conference on Electronic Measurement & Instruments, 949-955, (2009)
6 Gwan Soo Park and Eun Sik Park, "Improvement of the sensor system in magnetic flux leakage-type nondestructive testing(NDT)", IEEE Transactions on Magnetics, 38(2), 1277-1280, (2002)   DOI   ScienceOn
7 김태욱, 노용우, 최두현, "자기 누설 신호를 이용한 배관 결함의 길이 추정 성능 비교", 비파괴검사학회지, 29(2), 108-113, (2009)
8 김민호, "자기 누설 신호와 SQI를 이용한 가스배관 결함 자동 검출 및 결함 깊이 모델링", 경북대학교 대학원 석사학위 논문, (2008)