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

fYear

2013

fDate

26-29 Oct. 2013

Firstpage

725

Lastpage

728

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2013 International Conference on

Conference_Location

Busan

Print_ISBN

978-1-4799-1446-3

Type

conf

DOI

10.1109/ICEMS.2013.6754511

Filename

6754511