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Further results on the angled crack problem

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Abstract

Panels of PMMA having edge cracks at an angle to applied load were tested in tension and bending. Direction of initial crack growth and load to failure were recorded. Stress analysis of each test configuration was performed, and the maximum hoop stress and minimum strain energy density criteria were used to predict failure data. Reasonable correlation between experiment and theory was realised, but with little basis for discriminating between the two failure criteria.

Résumé

On a essayé en traction et flexion des panneaux de PMMA comportant des fissures de bord faisant un certain angle avec la direction des charges appliquées. On a enregistré la direction de la propagation initiale de la fissure et la charge de rupture. On a effectué une analyse des contraintes pour chacune des configurations envisagées lors des essais, et l'on a utilisé les critères de contrainte maximum de calcul et de densité minimum d'énergie pour prédire les conditions de rupture.

Une corrélation raisonnable a été obtenue entre l'expérience et la théorie, sans pour autant offrir une base suffisante de discrimination entre les deux critères de rupture.

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Authors and Affiliations

  1. Imperial College, London, UK

    P. D. Ewing

  2. Carnegie-Mellon University, 15213, Pittsburgh, Pa., USA

    J. L. Swedlow

  3. Imperial College, London, UK

    J. G. Williams

Authors
  1. P. D. Ewing
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  2. J. L. Swedlow
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  3. J. G. Williams
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Ewing, P.D., Swedlow, J.L. & Williams, J.G. Further results on the angled crack problem. Int J Fract 12, 85–93 (1976). https://doi.org/10.1007/BF00036011

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  • DOI: https://doi.org/10.1007/BF00036011

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