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Vol.4 No.4 previous AA-SP8(49-50-51-52-53-54-55--56-57-58)-NT 53 -54-55

Academic Articles
Regular Paper Vol.5No.1 (2013) p.42 - p.50
 

Simplified Electromagnetic Inverse Analysis Technique about the Inclined Defect for Welded Zone of High Chromium Steel

 
Shogo NAKASUMI 1,*, Takayuki SUZUKI 1 , Naoyuki TAKASHIMA 2 and Yuji TSUCHIDA 3
 
1National Institute of Advanced Industrial Science and Technology, East 1-2-1 Namiki, Tsukuba, Ibaraki 305-8564, Japan
2University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki, 305-8573, Japan
3Oita University, 700, Dannoharu, Oita-shi, Oita, 870-1192, Japan
 
Abstract
A simplified technique of obtaining the shape of inclined defect at welded zone of high chromium steel was proposed. Magnetic flux leakage measurement and the inverse analysis using singular value decomposition were used. From the magnetic flux density distribution obtained under the high magnetic field, adequate defect shape was obtained without the influence of welded zone. Under the low magnetic field, adequate defect shape was obtained by subtracting the magnetic field of welded zone from measured magnetic flux distribution.
 
Keywords
inclined defect, magnetic flux leakage, welded zone, inverse analysis, magnetic dipole moment
 
Full Paper: PDF EJAM Vol.5No.1 pp.42-50 "Simplified Electromagnetic Inverse Analysis Technique about the Inclined Defect for Welded Zone of High Chromium Steel "

















Article Information
Article history:
Received 17 November 2012
Accepted 12 March 2013