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    Determination of interfacial adhesion energies of thermal barrier coatings by compression test combined with a cohesive zone finite element model

    Access Status
    Fulltext not available
    Authors
    Zhu, W.
    Yang, L.
    Guo, J.
    Zhou, Y.
    Lu, Chunsheng
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Zhu, W. and Yang, L. and Guo, J. and Zhou, Y. and Lu, C. 2015. Determination of interfacial adhesion energies of thermal barrier coatings by compression test combined with a cohesive zone finite element model. International Journal of Plasticity. 64: pp. 76-87.
    Source Title
    International Journal of Plasticity
    DOI
    10.1016/j.ijplas.2014.08.003
    ISSN
    0749-6419
    School
    Department of Mechanical Engineering
    URI
    http://hdl.handle.net/20.500.11937/10106
    Collection
    • Curtin Research Publications
    Abstract

    Determination of interfacial adhesion energies of thermal barrier coatings is important for understanding failure mechanisms and predicting their lifetime. Combined compression test with a cohesive zone finite element model, it is shown that the interfacial adhesion energy is in the range of 100–130 J/m2. Based on the nonlinear delamination theory, the critical interfacial adhesion energy of delamination is 120 J/m2 and the corresponding loading phase angle is -56°. With the increase of the half-length of the crack, the crack propagation tends to be steady with a steady-state interface energy release rate of 150 J/m2, and delamination experiences almost pure mode II. These results obtained from finite element simulations and theoretical analyses are in good agreement with the available values determined by other testing methods reported in the literatures, which confirms the validity of this method.

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