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A test specimen with constant stress intensity factor for prescribed displacement

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Abstract

A test specimen has been developed that gives a constant value of the stress intensity factor in mode I under fixed displacement loading conditions. The test specimen is a double contoured cantilever beam specimen whose shape is derived from engineering beam theory. A final shape for a range of crack extensions where stress intensity is constant was established using a finite element analysis. It is believed that this specimen could be useful for many applications where a constant stress intensity factor is needed over a range of crack extension for constant displacement loading e.g. viscoelastic crack growth in an adhesive layer or stress corrosion cracking.

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Authors and Affiliations

  1. Avesta Sheffield AB, Research and Development, S-774 80, Avesta, Sweden

    Hans L. Groth

  2. Department of Aeronautical Structures and Materials, The Royal Institute of Technology, S-100 44, Stockholm, Sweden

    Dan Zenkert

Authors
  1. Hans L. Groth
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  2. Dan Zenkert
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Groth, H.L., Zenkert, D. A test specimen with constant stress intensity factor for prescribed displacement. Int J Fract 61, 173–181 (1993). https://doi.org/10.1007/BF00012456

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  • DOI: https://doi.org/10.1007/BF00012456

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