Residual Stress Evaluation in Vitreous Enameled Steel Sheets by Digital Images Analysis of Microstructures

  • Rita AmbuEmail author
  • Andrea Zucchelli
  • Giangiacomo Minak
Part of the Augmented Vision and Reality book series (Augment Vis Real, volume 4)


Composite vitreous-enameled steel sheet have become more attractive for structural applications. In this chapter, an investigation on the residual stresses, introduced during the manufacturing of these materials, is reported. The local structure evidences the presence of bubbles in the coating and the interface domain between the substrate and the external layer made of a complex material system where the ceramic and the metal constituents are mixed. This particular local structure can affect the distribution and entity of the residual stresses. Digital images of cross-section micrographs have been processed and used to discretize the material microstructure into a mesh suitable for finite element analysis. The residual stresses have been evaluated on coatings manufactured with different technologies and, in particular, the effect of the presence of bubbles on the stresses has been highlighted.


Vitreous enamel coating Residual stress Image processing Finite element method 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Rita Ambu
    • 1
    Email author
  • Andrea Zucchelli
    • 2
  • Giangiacomo Minak
    • 2
  1. 1.University of CagliariCagliariItaly
  2. 2.University of BolognaBolognaItaly

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