Title :
Solution of inverse problems in electromagnetic NDE using finite element methods
Author :
Yan, Mingye ; Udpa, Satish ; Mandayam, Shreekanth ; Sun, Yushi ; Sacks, Paul ; Lord, William
Author_Institution :
Dept. of Electr. Eng. & Comput. Eng., Iowa State Univ., Ames, IA, USA
fDate :
9/1/1998 12:00:00 AM
Abstract :
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
Keywords :
inspection; inverse problems; iterative methods; magnetostatics; mesh generation; nondestructive testing; electromagnetic NDE; ferromagnetic gas pipelines; finite element mesh; finite element methods; in-line inspection; inverse problems; iterative solution; magnetostatic nondestructive evaluation; pipe-wall defects; signal inversion technique; simulation results; Artificial neural networks; Finite element methods; Inspection; Inverse problems; Magnetic flux leakage; Magnetostatics; Permanent magnets; Permeability; Pipelines; Shape;
Journal_Title :
Magnetics, IEEE Transactions on
