Table of Contents
International Scholarly Research Notices
Volume 2015 (2015), Article ID 594147, 13 pages
http://dx.doi.org/10.1155/2015/594147
Research Article

Characterization and Prediction of Cracks in Coated Materials: Direction and Length of Crack Propagation in Bimaterials

1Mechanical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
2LaBPS, Université de Lorraine, Ecole Nationale d’Ingénieurs de Metz (ENIM), 1 Route d’Ars Laquenexy, 57070 Metz, France
3Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari, Viale Japigia 182, 70126 Bari, Italy

Received 3 June 2014; Revised 1 December 2014; Accepted 5 December 2014

Academic Editor: Yukihiro Kusano

Copyright © 2015 C. I. Pruncu 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

The behaviour of materials is governed by the surrounding environment. The contact area between the material and the surrounding environment is the likely spot where different forms of degradation, particularly rust, may be generated. A rust prevention treatment, like bluing, inhibitors, humidity control, coatings, and galvanization, will be necessary. The galvanization process aims to protect the surface of the material by depositing a layer of metallic zinc by either hot-dip galvanizing or electroplating. In the hot-dip galvanizing process, a metallic bond between steel and metallic zinc is obtained by immersing the steel in a zinc bath at a temperature of around 460°C. Although the hot-dip galvanizing procedure is recognized to be one of the most effective techniques to combat corrosion, cracks can arise in the intermetallic layer. These cracks can affect the life of the coated material and decrease the lifetime service of the entire structure. In the present paper the mechanical response of hot-dip galvanized steel submitted to mechanical loading condition is investigated. Experimental tests were performed and corroborative numerical and analytical methods were then applied in order to describe both the mechanical behaviour and the processes of crack/cracks propagation in a bimaterial as zinc-coated material.