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within S J Noronha Remove this filter Characterization and Evaluation of Materials Remove this filter

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  1. No Access

    Article

    Modeling the brittle–ductile transition in ferritic steels. Part II: analysis of scatter in fracture toughness

    A dislocation simulation model has been proposed to predict the brittle–ductile transition in ferritic steels in Part I. Here we extend the model to address the problem of inherent scatter in fracture toughnes...

    S. J. Noronha, N. M. Ghoniem in International Journal of Mechanics and Materials in Design (2008)

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    Article

    Modeling the brittle–ductile transition in ferritic steels: dislocation simulations

    We present a model for the brittle–ductile transition in ferritic steels based on two dimensional discrete dislocation simulations of crack-tip plasticity. The sum of elastic fields of the crack and the emitte...

    S. J. Noronha, N. M. Ghoniem in International Journal of Mechanics and Materials in Design (2008)

  3. No Access

    Article

    Dislocation simulation of brittle-ductile transition in ferritic steels

    Two-dimensional discrete dislocation simulations of the crack-tip plasticity of a macrocrack-micro-crack system representing the fracture behavior in ferritic steels are presented. The crack-tip plastic zones ...

    S. J. Noronha, N. M. Ghoniem in Metallurgical and Materials Transactions A (2006)

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    Article

    A Multiple Slip Plane Model for Crack-Tip Plasticity

    A single slip plane dislocation dynamics based model for the brittle to ductile transition has been extended to have multiple slip planes around the crack-tip. The crack-tip plastic behaviour is studied for a ...

    S. J. Noronha, S. G. Roberts, A. J. Wilkinson in MRS Online Proceedings Library (1999)