Development of a novel fast solver for the direct current potential drop method and its verification with nondestructive testing of metallic foam

Issue title: Selected Papers from the 14th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2009), Part II

Article type: Research Article

Authors: Xie, Shejuan^a | Chen, Zhenmao^b | Takagi, Toshiyuki^{a; *}

Affiliations: [a] IFS, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan | [b] School of Aerospace, Xi'an Jiaotong University, 28 West Xianning Road, Xi'an, 710049, China

Correspondence: [*] Corresponding author. Tel.: +81 22 217 5248; Fax: +81 22 217 5248; E-mail: [email protected]

Abstract: A fast forward scheme based on the Finite Element Method (FEM) and databases is proposed and developed for the rapid computation of Direct Current Potential Drop (DCPD) signals under condition of 3D FEM analysis for Nondestructive Testing (NDT) of Metallic Foam to reduce computer burden. Comparison of numerical results of the present method with those of full FEM code and experimental results of metallic foam indicates that the proposed novel fast forward scheme can predict DCPD signals accurately and over 100 times faster.

Keywords: Fast Forward Scheme, DCPD, Verification, NDT, Metallic Foam, Experiment

DOI: 10.3233/JAE-2010-1246

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 3-4, pp. 1253-1260, 2010