Life assessment prognostic modelling for multi-layered coating systems using a multidisciplinary approach

Jawwad Latif, Zulfiqar Ahmad Khan, Mian Hammad Nazir, Keith Stokes, Joseph Plummer

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    Abstract

    The multidisciplinary approach has been adopted to model the formation and propagation of blistering effect for evaluation of useful coating life in the multi-layered coating–substrate system. A prognostic model of de-bonding driving force has been formulated as a function of material science, solid mechanics and fracture mechanics properties to estimate critical, safe and fail conditions of the coating–substrate system. The blister growth velocity rate is also included in the developed model to estimate the blister propagation as a function of diffusion-induced stress and residual stress. The proposed prognostic modelling for the formation and propagation of blistering effect are combined to form an assessment model for the evaluation of useful coating life of the multi-layered coating–substrate system and validated through experimental observation.
    Original languageEnglish
    Pages (from-to)664-678
    Number of pages15
    JournalMaterials Science and Technology
    Volume34
    Issue number6
    Early online date13 Dec 2017
    DOIs
    Publication statusPublished - 13 Apr 2018

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