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An experimental weight function for stress-intensity-factor calibrations

The experimental weight-function method for stress-intensity-factor calibrations is demonstrated. This procedure allows measurements for one cracked-specimen loading to be converted intoK 1 results for a different loading applied to the same geometry

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Abstract

This paper describes a set of experiments conducted to demonstrate application of weight-function methods to experimental stress-intensity-factor calibrations. The weight-function method allows stress-intensity-factor and crack-surface-displacement information obtained for one loading to be generalized in a form which allows direct computation of stress-intensity factors for other load configurations applied to the crack geometry under consideration. The specific results described here demonstrate that experiments with edgecracked strips loaded in four-point bending also provide stress-intensity factors for remote lension and three-point bend-load applications.

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Authors and Affiliations

  1. Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson Air Force Base, 45433, OH

    D. Bar-Tikva (Former Graduate Student and Professor) & A. F. Grandt Jr. (Associate Professor)

  2. School of Aeronautics and Astronautics, Purdue University, 47907, West Lafayette, IN

    A. N. Palazotto (Former Graduate Student and Professor)

Authors
  1. D. Bar-Tikva
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  2. A. F. Grandt Jr.
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  3. A. N. Palazotto
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Bar-Tikva, D., Grandt, A.F. & Palazotto, A.N. An experimental weight function for stress-intensity-factor calibrations. Experimental Mechanics 21, 371–378 (1981). https://doi.org/10.1007/BF02324798

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  • DOI: https://doi.org/10.1007/BF02324798

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