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Quasi-static cracking of several ductile materials under plane stress conditions

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Abstract

Quasi-static cracking of several ductile materials with large fracture toughnesses and low yield strengths was described. Laboratory size testpieces with reinforcements provided by special test rigs were used. All irreversibilities and general yielding other than at the crack tip were successfully eliminated. Plane stress fracture toughnesses for alloys of aluminum and zinc, low carbon steels and polycarbonate were thus easily obtained.

Résumé

On décrit la fissuration quasi statique de divers matériaux présentant de grandes tenacités à la rupture et de faibles limites élastiques.

Pour les essais de laboratoire, on utilise des éprouvettes comportant des renforcements nécessités par l'emploi d'un dispositif spécial d'essai. Ceci a permis d'éliminer, avec succès, toutes les irréversibilités ainsi que toute plastification générale autres que celles qui surviennent à l'extrémité de la fissure.

Ces tenacités à la rupture en état plan de tension ont été aisément déterminées dans le cas d'alliages d'aluminium et de zinc, d'aciers à bas carbone ainsi que de polycarbonate.

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Author notes

  1. R. C. Owen

    Present address: Application Engineer, Alcoa of Australia, Melbourne, Australia

  2. Y. W. Mai

    Present address: Department of Mechanical Engineering, Imperial College of Science and Technology, London, UK

Authors and Affiliations

  1. Department of Mechanical Engineering, University of Hong Kong, Hong Kong

    R. C. Owen, Y. W. Mai & C. L. Chow

Authors
  1. R. C. Owen
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  2. Y. W. Mai
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  3. C. L. Chow
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Owen, R.C., Mai, Y.W. & Chow, C.L. Quasi-static cracking of several ductile materials under plane stress conditions. Int J Fract 12, 3–17 (1976). https://doi.org/10.1007/BF00036004

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  • DOI: https://doi.org/10.1007/BF00036004

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