The Experts below are selected from a list of 312 Experts worldwide ranked by ideXlab platform

Xiaoyang Chen - One of the best experts on this subject based on the ideXlab platform.

  • Tensile stress fatigue Life Model of silicon nitride ceramic balls
    Tribology International, 2009
    Co-Authors: Jing Ling Zhou, Wei Nan Zhu, Xiaoyang Chen
    Abstract:

    Abstract The RCF (rolling contact fatigue) Life of ceramic balls is a reliable technique to assess whether or not they are suitable to be used in rolling bearings. The relation expression between failure probability and RCF Life was deduced with Weibull fracture statistic method for the silicon nitride ceramic ball in ball–cylinder geometric Model. The tensile stress Life Model about silicon nitride ceramic balls was set up between RCF Life and contact stress on the basis of the correlative numerical solution between the rating Life and the maximum contact stress. It is conceived basing on maximum principal tensile stress. The failure cause, fatigue phenomenon and mechanics of balls are analyzed. The analysis shows that considering the maximum tensile stress as fatigue failure critical stress is reasonable. It is indicated that the tensile stress Life Model is feasible through RCF test with different stress level. It is verified by the tensile stress Life Model that silicon nitride ceramic balls failed by the maximum principal tensile stress, not by the maximum shear stress. In comparison with the L–P shear stress Life Model, the tensile stress Life Model is reasonable for RCF Life prediction of silicon nitride ceramic balls.

Jing Ling Zhou - One of the best experts on this subject based on the ideXlab platform.

  • Tensile stress fatigue Life Model of silicon nitride ceramic balls
    Tribology International, 2009
    Co-Authors: Jing Ling Zhou, Wei Nan Zhu, Xiaoyang Chen
    Abstract:

    Abstract The RCF (rolling contact fatigue) Life of ceramic balls is a reliable technique to assess whether or not they are suitable to be used in rolling bearings. The relation expression between failure probability and RCF Life was deduced with Weibull fracture statistic method for the silicon nitride ceramic ball in ball–cylinder geometric Model. The tensile stress Life Model about silicon nitride ceramic balls was set up between RCF Life and contact stress on the basis of the correlative numerical solution between the rating Life and the maximum contact stress. It is conceived basing on maximum principal tensile stress. The failure cause, fatigue phenomenon and mechanics of balls are analyzed. The analysis shows that considering the maximum tensile stress as fatigue failure critical stress is reasonable. It is indicated that the tensile stress Life Model is feasible through RCF test with different stress level. It is verified by the tensile stress Life Model that silicon nitride ceramic balls failed by the maximum principal tensile stress, not by the maximum shear stress. In comparison with the L–P shear stress Life Model, the tensile stress Life Model is reasonable for RCF Life prediction of silicon nitride ceramic balls.

A. Phelippeau - One of the best experts on this subject based on the ideXlab platform.

  • Interfacial damage based Life Model for EB-PVD thermal barrier coating
    Surface and Coatings Technology, 2011
    Co-Authors: Christophe Courcier, Vincent Maurel, Luc Rémy, Stéphane Quilici, Isabelle Rouzou, A. Phelippeau
    Abstract:

    Thermal barrier coating Life Modelling is a major challenge for industrial applications. This study aims to highlight critical damage mechanisms involved in TBC failure for both isothermal and cyclic oxidation conditions. Experimental database is analysed in relation to elastic buckling of the ceramic top coat obtained by mechanical compressive tests. Ageing is Modelled thanks to an original damage approach dealing with the evolution of interfacial properties and loading history. This methodology is successfully applied as a post-processor to a 3D blade simulation for typical thermo-mechanical fatigue in-service loading.

  • Interfacial damage based Life Model for EB-PVD thermal barrier coating
    Surface and Coatings Technology, 2011
    Co-Authors: Christophe Courcier, Vincent Maurel, Luc Rémy, Stéphane Quilici, Isabelle Rouzou, A. Phelippeau
    Abstract:

    International audienceThermal barrier coating Life Modelling is a major challenge for industrial applications. This study aims to highlight critical damage mechanisms involved in TBC failure for both isothermal and cyclic oxidation conditions. Experimental database is analysed in relation to elastic buckling of the ceramic top coat obtained by mechanical compressive tests. Ageing is Modelled thanks to an original damage approach dealing with the evolution of interfacial properties and loading history. This methodology is successfully applied as a post-processor to a 3D blade simulation for typical thermo-mechanical fatigue in-service loading

Wei Nan Zhu - One of the best experts on this subject based on the ideXlab platform.

  • Tensile stress fatigue Life Model of silicon nitride ceramic balls
    Tribology International, 2009
    Co-Authors: Jing Ling Zhou, Wei Nan Zhu, Xiaoyang Chen
    Abstract:

    Abstract The RCF (rolling contact fatigue) Life of ceramic balls is a reliable technique to assess whether or not they are suitable to be used in rolling bearings. The relation expression between failure probability and RCF Life was deduced with Weibull fracture statistic method for the silicon nitride ceramic ball in ball–cylinder geometric Model. The tensile stress Life Model about silicon nitride ceramic balls was set up between RCF Life and contact stress on the basis of the correlative numerical solution between the rating Life and the maximum contact stress. It is conceived basing on maximum principal tensile stress. The failure cause, fatigue phenomenon and mechanics of balls are analyzed. The analysis shows that considering the maximum tensile stress as fatigue failure critical stress is reasonable. It is indicated that the tensile stress Life Model is feasible through RCF test with different stress level. It is verified by the tensile stress Life Model that silicon nitride ceramic balls failed by the maximum principal tensile stress, not by the maximum shear stress. In comparison with the L–P shear stress Life Model, the tensile stress Life Model is reasonable for RCF Life prediction of silicon nitride ceramic balls.

Christophe Courcier - One of the best experts on this subject based on the ideXlab platform.

  • Interfacial damage based Life Model for EB-PVD thermal barrier coating
    Surface and Coatings Technology, 2011
    Co-Authors: Christophe Courcier, Vincent Maurel, Luc Rémy, Stéphane Quilici, Isabelle Rouzou, A. Phelippeau
    Abstract:

    Thermal barrier coating Life Modelling is a major challenge for industrial applications. This study aims to highlight critical damage mechanisms involved in TBC failure for both isothermal and cyclic oxidation conditions. Experimental database is analysed in relation to elastic buckling of the ceramic top coat obtained by mechanical compressive tests. Ageing is Modelled thanks to an original damage approach dealing with the evolution of interfacial properties and loading history. This methodology is successfully applied as a post-processor to a 3D blade simulation for typical thermo-mechanical fatigue in-service loading.

  • Interfacial damage based Life Model for EB-PVD thermal barrier coating
    Surface and Coatings Technology, 2011
    Co-Authors: Christophe Courcier, Vincent Maurel, Luc Rémy, Stéphane Quilici, Isabelle Rouzou, A. Phelippeau
    Abstract:

    International audienceThermal barrier coating Life Modelling is a major challenge for industrial applications. This study aims to highlight critical damage mechanisms involved in TBC failure for both isothermal and cyclic oxidation conditions. Experimental database is analysed in relation to elastic buckling of the ceramic top coat obtained by mechanical compressive tests. Ageing is Modelled thanks to an original damage approach dealing with the evolution of interfacial properties and loading history. This methodology is successfully applied as a post-processor to a 3D blade simulation for typical thermo-mechanical fatigue in-service loading