Brittle crack propagation/arrest behavior in steel plate – Part II: Experiments and model validation

•The proposed model formulation is validated by comparing with the experiments.•Temperature gradient crack arrest tests showed a deviation from the empirical knowledge.•Duplex crack arrest tests showed a transition region of the crack arrest behavior.•The model formulation successfully predicted the experimental results.•A possible solution of “the long crack problem” is shown by the present study.

The proposed model formulation for brittle crack propagation/arrest behaviors in a steel plate has been validated by comparing with experiments of temperature gradient and duplex crack arrest tests. The proposed model formulation successfully predicted the experimental results, such as (1) a deviation from the empirical knowledge in the relationship between arrest toughness and temperature evaluated by the temperature gradient tests, and (2) a transition region of the crack arrest behavior evaluated by the duplex tests. The results consequently showed a possible solution to “the long crack problem”, which was not solved in the past studies.

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