Detection method of cracks by using magnetic fields in underground pipeline

Author

Hui Min Kim ; Hui Ryong Yoo ; Yong Woo Rho ; Gwan Soo Park

Author_Institution

Dept. of Electr. Eng., Pusan Nat. Univ., Busan, South Korea

fYear

2013

fDate

Oct. 30 2013-Nov. 2 2013

Firstpage

734

Lastpage

737

Abstract

Among the nondestructive testing methods, the MFL(Magnetic Flux Leakage) PIG(Pipeline Inspection Gauge) and CMFL(Circumferential MFL) PIG are especially suitable for testing pipelines because the pipeline has high magnetic permeability. This paper introduces design process of magnetic instrument, namely, MFL PIG, and computational method useful for its analysis by using 3D finite element method is explained. Also, by simulating and measuring the signal of magnetic leakage field, it is possible to detect of axially or circumferentially oriented cracks in underground pipeline.

Keywords

crack detection; finite element analysis; gauges; inspection; magnetic flux; magnetic leakage; magnetic permeability; mechanical engineering computing; nondestructive testing; pipelines; solid modelling; 3D finite element method; CMFL; PIG; axially oriented crack detection; circumferential MFL; circumferentially oriented crack detection; design process; magnetic flux leakage; magnetic instrument; magnetic permeability; nondestructive testing methods; pipeline inspection gauge; pipelines testing; underground pipeline; Pipeline; crack; finite element method; hall sensor; magnet; magnetic flux leakage;

fLanguage

English

Publisher

ieee

Conference_Titel

Ubiquitous Robots and Ambient Intelligence (URAI), 2013 10th International Conference on

Conference_Location

Jeju

Print_ISBN

978-1-4799-1195-0

Type

conf

DOI

10.1109/URAI.2013.6677441

Filename

6677441