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Parallel MGS-QR Sparsification for Fast Eddy Current NDT Simulation
Flavio Calvano, Guglielmo Rubinacci, Antonello Tamburrino, George-Marian Vasilescu, Salvatore Ventre
29 - 36
10.3233/978-1-60750-968-4-29
Studies in Applied Electromagnetics and Mechanics
Volume 36: Electromagnetic Nondestructive Evaluation (XV)
Abstract

In this work we discuss a numerical model of the forward problem in NDE. The model is based on a volume integral formulation. To treat 3D geometries and complex constitutive relationships, the fully populated matrix arising after discretization has been efficiently compressed, using also parallel algorithms. The method utilizes an effective low-rank approximation of the submatrices representing “far” interactions, obtained through a modified Gram-Schmidt - QR factorization method. Some numerical examples show the advantages of the proposed approach

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