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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