Title :
Defect estimation of a crack in underground pipelines by CMFL type NDT system
Author :
Hui Min Kim ; Yong Woo Rho ; Hui Ryong Yoo ; Sung Ho Cho ; Dong Kyu Kim ; Sung Ja Koo ; Gwan Soo Park
Author_Institution :
Dept. of Electr. Eng., Pusan Nat. Univ., Pusan, South Korea
Abstract :
A defect which is axially oriented with small size is hard to detect in conventional system. CMFL (Circumferential Magnetic Flux Leakage) type PIG (Pipelines Inspection Gauge) in the NDT (Nondestructive Testing), is operated to detect this defect called axially oriented cracks in the pipe. It is necessary to decompose the size and shapes of cracks for the maintenance of underground pipelines. This article is focused on the decomposing method of the size and shape of the axially oriented cracks by using inspection signal data for defect.
Keywords :
crack detection; inspection; magnetic flux; magnetic leakage; pipelines; CMFL; NDT system; axially oriented crack shape decomposing method; axially oriented crack size decomposing method; circumferential magnetic flux leakage; crack defect estimation; inspection signal data; nondestructive testing; pipelines inspection gauge; underground pipelines; Estimation; Magnetic flux leakage; Magnetometers; Pipelines; Saturation magnetization; Sensors; Shape;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2013 International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4799-1446-3
DOI :
10.1109/ICEMS.2013.6754511
