The objective of this study was to investigate a method to predict brittle failure of silicon nitride ceramics in rolling contact. Fracture mechanics was used to predict crack propagation. Cracks in ceramic rolling elements, like steel, propagate after cyclic stressing in rolling contact. Failure occurs when a crack propagates unstably, or when the stress intensity factor exceeds the fracture toughness. Rolling life was predicted analytically for thrust type rolling contact under dry friction conditions, and compared with experimental results. The experimental lives were distributed near the predicted life curve based on 50% cumulative probability of failure. Consequently, the prediction of rolling life using fracture mechanics is found to be valid to predict reliability against brittle failure of silicon nitride ceramics.From this analysis, the following characteristics were identified as important to maximize resistance to brittle fracture: To obtain long life, it is important to minimize surface damage on the raceways and rolling elements in the manufacturing process, and to minimize the friction coefficient with proper bearing lubrication.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Prediction of Brittle Failure of Silicon Nitride Ceramics in Rolling Contact Using Fracture Mechanics


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE International Congress and Exposition ; 1997



    Publication date :

    1997-02-24




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Prediction of brittle failure of silicon nitride ceramics in rolling contact using fracture mechanics

    Oguma,N. / Sugita,T. / Nishi,M. et al. | Automotive engineering | 1997


    Prediction of Brittle Failure of Silicon Nitride Ceramics in Rolling Contact Using Fracture Mechanics

    Oguma, N. / Sugita, T. / Nishi, M. et al. | British Library Conference Proceedings | 1997


    Fatigue, Creep and Fracture Behavior of Silicon Nitride Ceramics

    Sankar, J. / Kelkar, A. D. / Neogi, J. | British Library Online Contents | 1995



    GEAR RIM FAILURE PREDICTION BASED ON FRACTURE MECHANICS

    Xu, B. | British Library Conference Proceedings | 2020