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The Influence of Inertial Effects on the Fracture of Rapidly Loaded Compact Tension Specimens Part A: Loading and Fracture Initiation

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Abstract

Compact tension specimens were loaded at 1 and 7 m/s with two different accelerations imposed. Experimental photoelastic patterns recorded by a high speed camera were compared with those simulated by transient dynamic elastic Finite Element (F.E.) analysis. The positive results of this comparison validated the F.E. analysis, and gave credit to a comparison of the experimental results as well. It is demonstrated that when the initial acceleration of the specimen is reduced, using a damper in the loading device, static analysis can be applied for both testing speeds used. In high accelerations tests (without use of a damper), a transient dynamic stress state in the specimens is found, and therefore a dynamic analysis should be used. Furthermore, in high acceleration tests a transient mixed mode of loading at the crack tip occurs.

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Authors and Affiliations

  1. Laboratoire de Polymères, MX-D, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland

    Ph. Beguelin & H.H. Kausch

  2. Institut Charles Sardon, 6 rue Boussingault, F-67083, Strasbourg, Invited Scientist at EPFL

    C. Fond

Authors
  1. Ph. Beguelin
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  2. C. Fond
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  3. H.H. Kausch
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Beguelin, P., Fond, C. & Kausch, H. The Influence of Inertial Effects on the Fracture of Rapidly Loaded Compact Tension Specimens Part A: Loading and Fracture Initiation. International Journal of Fracture 89, 85–102 (1998). https://doi.org/10.1023/A:1007457914776

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  • DOI: https://doi.org/10.1023/A:1007457914776

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