Evaluation of geometrical shape in fatigue cracking using ECT signals

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

Article type: Research Article

Authors: Oshima, Kenichi^a | Kojima, Fumio^{b; *}

Affiliations: [a] Fukuyama Polytechnic College, 4-8-48, Kitahonjyo, Fukuyama, Hiroshima, 720-0074, Japan | [b] Kobe University, 1-1, Rokkodai-cho, Nada-ku, Kobe, Hyogo, 657-8501, Japan

Correspondence: [*] Corresponding author: Kenichi OSHIMA, Fukuyama Polytechnic College, 4-8-48, Kitahonjyo, Fukuyama, Hiroshima, 720-0074, Japan. Tel.: +81 84 923 6394; Fax: +81 84 921 7038; E-mail: [email protected]

Abstract: Our study is aimed at developing a practical method for identifying the cracking geometrical shape from surface image obtained by scanning eddy current testing (ECT) probe. A various type of fatigue cracks are made from compact tension (CT) specimen of aluminum alloy samples. ECT signals are collected for those test samples using the absolute pancake probe. We discuss the features of ECT detecting signals of fatigue cracking which are different from electric discharge machining (EDM) crack signals.

Keywords: Eddy current testing, nondestructive inspection, fatigue cracking

DOI: 10.3233/JAE-2010-1240

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 3-4, pp. 1211-1217, 2010