Flaw detection of underground pipeline using electrical potential method

Issue title: INABIO 2006

Article type: Research Article

Authors: Kojima, Fumio^a

Affiliations: [a] Graduate School of Engineering, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe 657-8501, Japan. Tel./Fax: +81 78 803 6493; E-mail: kojima@koala.kobe-u.ac.jp

Abstract: This paper presents a modeling approach to characterize adjacent cracks on underground gas pipe. Electrical potential method is used for capturing signals from surface cracks on the gas pipe. A three dimensional potential problem is considered for the inspection model. A defect parameter-to-output mapping is represented by means of finite element method in three dimensions. Computational methods for sizing and positioning of cracks are proposed based on our modeling approach.

Keywords: Nondestructive evaluation, inverse problem, flaw detection, finite element method

DOI: 10.3233/JAE-2008-926

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 27, no. 3, pp. 177-187, 2008