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A technique for experimental evaluation of mixed mode stress intensity factors

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Abstract

High sensitivity moiré interferometry was used to obtain whole-field orthogonal components of displacement in the vicinity of cracks in centre-cracked plates of aluminium 6082. The plates had been prepared in such a way as to enable the application of load at angles of 75° and 60° to the planes of the fatigue pre-cracks. The form of the moiré fringe data enables convenient separation of the components of stress intensity factor K I and K II. The results are compared with analytical predictions. The method is, in principle, suitable for use with specimens of arbitrary geometry and loading.

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Authors and Affiliations

  1. Department of Mechanical & Manufacturing Engineering, University of Paisley, PA1 2BE, Paisley, U.K.

    P. McA. MacKenzie, C. A. Walker & R. Giannettoni

  2. Department of Mechanical Engineering, University of Strathclyde, G1 1XJ, Glasgow, U.K.

    P. McA. MacKenzie, C. A. Walker & R. Giannettoni

Authors
  1. P. McA. MacKenzie
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  2. C. A. Walker
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  3. R. Giannettoni
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MacKenzie, P.M., Walker, C.A. & Giannettoni, R. A technique for experimental evaluation of mixed mode stress intensity factors. Int J Fract 62, 139–148 (1993). https://doi.org/10.1007/BF00035158

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  • DOI: https://doi.org/10.1007/BF00035158

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