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Study on fast fracture and crack arrest

Experimental results of brittle-crack propagation and arrest on structural steel are analyzed using the finite-difference method

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Abstract

In this paper, the experimental results of brittle-crack propagation and arrest on structural steels are analyzed using the finite-difference method. The test specimens used are double-tension and double-cantilever type (DCB).

It is found that dynamic consideration is indispensable for general interpretation of fast fracture and crack arrest and material toughness can be defined as a function of temperature and crack velocity. Using the defined fracture toughness, crack-propagation-arrest behavior can be predicted by crack-propagation simulation if the condition of boundary loading of a specimen is known. This implies a possibility to develop simple methods for crack-arrester design.

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References

  1. Kanazawa, T., Machida, S. and Teramoto, T., “Preliminary Approaches to Experimental and Numerical Study on Fast Crack Propagation and Crack Arrest,” ASTM STP 627, 39–58 (1977).

  2. “Fast Fracture Resistance and Crack Arrest in Structural Steel,” SSC-242 Progress Report, Ship Structure Committee (1973).

  3. Freund, L.B., “Crack Propagation in an Elastic Solid Subjected to General Loading — I Constant Rate to Extension,”J. Mech. Phys. Solids,20,129–140 (1972).

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  4. “A Study of Ship Hull Crack Arrester Systems,” Final Technical Report on Project ST-226, Ship Structure Committee (1976).

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Authors and Affiliations

  1. Department of Naval Architecture, Faculty of Engineering, University of Tokyo, 3-1 Hongo 7-Chome, Bunkyo-Ku, 113, Tokyo, Japan

    T. Kanazawa, S. Machida, T. Teramoto & H. Yoshinari

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  1. T. Kanazawa
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  2. S. Machida
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  3. T. Teramoto
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  4. H. Yoshinari
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Kanazawa, T., Machida, S., Teramoto, T. et al. Study on fast fracture and crack arrest. Experimental Mechanics 21, 78–88 (1981). https://doi.org/10.1007/BF02325200

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  • DOI: https://doi.org/10.1007/BF02325200

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