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A modified specimen for evaluating the mixed mode fracture toughness of adhesives

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Abstract

This article introduces a specimen geometry that allows the separation of fracture energy release rates G I and G II in adhesively joined beams made of disparate materials. The analysis is based upon a Green's functions formulation for shear deformable beams and circumvents the need to employ finite element computations. The current method results in a system of non-singular integral equations, that can be discretized and reduced to a system of algebraic equations which may be solved by common numerical techniques. The analysis accounts for the dimensions and properties of the adhesive and provides results for a wide range of G I, G II and their ratio. Those results agree with finite element computational values to within less than 4%.

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Authors and Affiliations

  1. Department of Mechanical & Aerospace Engineering & Engineering Science, The University of Tennessee, 307 Perkins Hall, Knoxville, TN, 37996-2030, USA

    Ya-Jun Guo

  2. Division of Engineering Technology, Oak Ridge National Laboratory, Mail Stop 8051, Oak Ridge

    Y. Jack Weitsman

Authors
  1. Ya-Jun Guo
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  2. Y. Jack Weitsman
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Guo, YJ., Weitsman, Y.J. A modified specimen for evaluating the mixed mode fracture toughness of adhesives. International Journal of Fracture 107, 201–234 (2001). https://doi.org/10.1023/A:1007618718262

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  • DOI: https://doi.org/10.1023/A:1007618718262

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