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Determining fracture parameters with full-field optical methods

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Abstract

In order to increase the accuracy of stressintensity-factor measurements and to obtain data on additional parameters which may influence fracture behavior (such as crack branching and crack curvature) a technique for fullfield fringe-pattern analysis (referred to as the local collocation method) has been developed. This method removes the restriction of limiting the data analysis region to the near-field region by including additional nonsingular terms in the algorithm. In this paper the theory of the method is developed and sample results using photoelastic, holographic and moiré full-field patterns are provided.

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Authors and Affiliations

  1. Mechanical Engineering Department, University of Maryland, 20742, College Park, MD

    Robert J. Sanford (Professor)

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  1. Robert J. Sanford
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Sanford, R.J. Determining fracture parameters with full-field optical methods. Experimental Mechanics 29, 241–247 (1989). https://doi.org/10.1007/BF02321401

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  • DOI: https://doi.org/10.1007/BF02321401

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