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Influence of damage on crack-tip fields under small-scale-creep conditions

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Non-Linear Fracture

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Abstract

The growth of a sharp crack typically is accompanied by a damage or fracture process zone that propagates with the crack tip. The present understanding of the transient crack-tip fields under small-scale-creep conditions is limited primarily to analyses based upon creep flow rules that neglect damage. In this paper, Kachanov-type creep-damage constitutive equations are developed that include the dilatational creep that arises from caviation and microcrack damage. A finite element calculation demonstrates the effects of this type of creep-damage behavior on the asymptotic, singular crack-tip fields.

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Author information

Authors and Affiliations

  1. Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA, 19104, USA

    John L. Bassani

  2. AT&T Bell Laboratories, Allentown, PA, 18103, USA

    Donald E. Hawk

Authors
  1. John L. Bassani
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  2. Donald E. Hawk
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Editor information

Editors and Affiliations

  1. Graduate Aeronautical Laboratories, Caltech, Pasadena, Calif., USA

    W. G. Knauss  & A. J. Rosakis  & 

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© 1990 Springer Science+Business Media Dordrecht

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Bassani, J.L., Hawk, D.E. (1990). Influence of damage on crack-tip fields under small-scale-creep conditions. In: Knauss, W.G., Rosakis, A.J. (eds) Non-Linear Fracture. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-2444-9_11

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  • DOI: https://doi.org/10.1007/978-94-017-2444-9_11

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-90-481-4064-0

  • Online ISBN: 978-94-017-2444-9

  • eBook Packages: Springer Book Archive

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