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International Journal of Corrosion
Volume 2011, Article ID 385083, 10 pages
http://dx.doi.org/10.1155/2011/385083
Research Article

Development of Analytical Method for Predicting Residual Mechanical Properties of Corroded Steel Plates

1Department of Civil and Environmental Engineering, Ehime University, Matsuyama 790-8577, Japan
2Department of Civil Engineering and Architecture, Tokuyama College of Technology, Shunan 745-8585, Japan
3Department of Civil and Environmental Engineering, Hiroshima University, Higashi-Hiroshima 739-8511, Japan
4Department of Civil Engineering, University of Peradeniya, Peradeniya 20400, Sri Lanka

Received 22 September 2010; Revised 21 January 2011; Accepted 25 March 2011

Academic Editor: Chang-Jian Lin

Copyright © 2011 J. M. R. S. Appuhamy et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Bridge infrastructure maintenance and assurance of adequate safety is of paramount importance in transportation engineering and maintenance management industry. Corrosion causes strength deterioration, leading to impairment of its operation and progressive weakening of the structure. Since the actual corroded surfaces are different from each other, only experimental approach is not enough to estimate the remaining strength of corroded members. However, in modern practices, numerical simulation is being used to replace the time-consuming and expensive experimental work and to comprehend on the lack of knowledge on mechanical behavior, stress distribution, ultimate behavior, and so on. This paper presents the nonlinear FEM analyses results of many corroded steel plates and compares them with their respective tensile coupon tests. Further, the feasibility of establishing an accurate analytical methodology to predict the residual strength capacities of a corroded steel member with lesser number of measuring points is also discussed.