Quantitative evaluation of wall thinning in pipe wall using electromagnetic acoustic transducer

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

Article type: Research Article

Authors: Kosaka, Daigo^{a; *} | Kojima, Fumio^b | Yamaguchi, Hiroshi^b

Affiliations: [a] Polytecnic University 4-1-1, Hashimotodai, Sagamihara, Kanagawa, Japan | [b] Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo, Japan

Correspondence: [*] Corresponding author: Daigo Kosaka, Polytecnic University 4-1-1, Hashimotodai, Sagamihara, Kanagawa 229-1196, Japan. Tel.: +81 42 763 9148; Fax: +81 42 763 9148; E-mail: [email protected]

Abstract: This paper aims at a quantitative nondestructive evaluation of pipe wall thinning using an electromagnetic acoustic transducer. Type 304 stainless steels sample specimens that are fabricated by a semi ellipse were provided for our experiments. First, results of measurement and simulation experiments are shown using the provided test samples. The variety of simulation results showed good agreement with laboratory experimental results. Second, the sensitivity of pulse echo signals with respect to corrosion geometry of pipe wall is investigated. Finally, the feasibility studies of our sizing methodology are summarized for evaluating FAC and early LDI test samples.

Keywords: Noncontact evaluation, electro magnetic acoustic transducer, flow-accelerated corrosion, liquid droplet impingement erosion, piping

DOI: 10.3233/JAE-2010-1238

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 3-4, pp. 1195-1200, 2010