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Evolution of Crack Aspect Ratio in Sheets Under Tension and Bending Cyclic Loading

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Fatigue of Materials III

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Abstract

The aim of this paper is the numerical prediction of the cracking path followed by a surface crack front in plates constituted of different materials (determined by the exponent m of the Paris law), subjected to cyclic tension or cyclic bending loading. To this end, a numerical modelling was developed on the basis of a discretization of the crack front (characterized with elliptical shape) and the crack advance at each point perpendicular to such a front, according to a Paris law, using the stress intensity factor (SIF) calculated by Newman and Raju. Results show that the crack leads to a preferential crack path that corresponds to a very shallow initial crack with a quasi-circular crack front. The increase of the Paris exponent produces a quicker convergence during fatigue crack propagation from the different initial crack shapes.

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Authors and Affiliations

  1. Department of Materials Engineering, University of Salamanca, E.P.S. Zamora, Spain

    J. Toribio & B. González

  2. Department of Computing Engineering, University of Salamanca, E.P.S. Zamora, Spain

    J. C. Matos & J. Escuadra

Authors
  1. J. Toribio
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  2. J. C. Matos
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  3. B. González
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  4. J. Escuadra
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Editor information

Editors and Affiliations

  1. Department of Mechanical Engineering, The University of Akron, USA

    T. S. Srivatsan (Professor of Materials Science and Engineering) (Professor of Materials Science and Engineering)

  2. George Washington University, Washington, DC, USA

    M. Ashraf Imam (Professor of Materials Science) (Professor of Materials Science)

  3. Mechanical and Materials Engineering Department, Materials Science and Engineering Program, Wright State University, Dayton, Ohio, USA

    R. Srinivasan (Professor, Director) (Professor, Director)

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© 2014 TMS (The Minerals, Metals & Materials Society)

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Toribio, J., Matos, J.C., González, B., Escuadra, J. (2014). Evolution of Crack Aspect Ratio in Sheets Under Tension and Bending Cyclic Loading. In: Srivatsan, T.S., Imam, M.A., Srinivasan, R. (eds) Fatigue of Materials III. Springer, Cham. https://doi.org/10.1007/978-3-319-48240-8_19

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