Solution of inverse problems in electromagnetic NDE using finite element method

Journal Article · Tue Sep 01 00:00:00 EDT 1998 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.717682· OSTI ID:665273

Yan, M; Udpa, S; Mandayam, S; Sun, Y; Sacks, P; Lord, W ^[1]

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1. Iowa State Univ., Ames, IA (United States). Dept. of Electrical and Computer Engineering

This paper presents a technique for solving inverse problems in magnetostatic nondestructive evaluation (NDE), using finite element models. In-line inspection of ferromagnetic gas pipelines containing pipe-wall defects, is chosen as the candidate NDE process. The signal inversion technique consists of iteratively solving the forward problem by updating the finite element mesh, rather than the material properties of the finite elements. Preliminary simulation results obtained using a 2D finite element model are presented.

• OSTI ID: 665273
• Report Number(s): CONF-971159-; ISSN 0018-9464; TRN: IM9830%%120
• Journal Information: IEEE Transactions on Magnetics, Vol. 34, Issue 5Pt1; Conference: COMPUMAG `97: 11. conference on the computation of electromagnetic fields, Rio de Janeiro (Brazil), 3-6 Nov 1997; Other Information: PBD: Sep 1998
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
NATURAL GAS DISTRIBUTION SYSTEMS
PIPELINES
FINITE ELEMENT METHOD
MESH GENERATION
TWO-DIMENSIONAL CALCULATIONS
MAGNETIC FLUX
NONDESTRUCTIVE TESTING