Title :
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
fDate :
Oct. 30 2013-Nov. 2 2013
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;
Conference_Titel :
Ubiquitous Robots and Ambient Intelligence (URAI), 2013 10th International Conference on
Conference_Location :
Jeju
Print_ISBN :
978-1-4799-1195-0
DOI :
10.1109/URAI.2013.6677441
