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The influence of crack length on fatigue crack growth in deep sharp notches

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Abstract

The fatigue crack growth rateda/dN of short cracks and the transition to long crack behavior were investigated for ARMCO-iron. Deep notched specimens with very small notch radius (between 1.5 and 4 μm) were used. The experiments were performed with constant stress intensity ranges for various stress ratios; the fatigue crack growth rate was measured as a function of the crack length. The results permit a discussion of the mechanisms responsible for the different behavior of “short” and “long” cracks.

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Authors and Affiliations

  1. Erich-Schmid-Institut für Festkörperphysik der Österreichischen Akademie der Wissenschaften, Leoben, Austria

    R. Pippan (Research Assistant)

  2. Balzers Company, FL-Liechtenstein, Austria

    M. Berger

  3. Institut für Metallphysik der Montanuniversität Leoben, Austria

    H. P. Stüwe (Professor, Director)

  4. Erich-Schmid-Institut für Festkörperphysik der Österreichischen Akademie der Wissenschafen, Leoben, Austria

    H. P. Stüwe (Professor, Director)

Authors
  1. R. Pippan
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  2. M. Berger
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  3. H. P. Stüwe
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Formerly Graduate Student, Institut für

Formerly Graduate Student, Institut für

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Pippan, R., Berger, M. & Stüwe, H.P. The influence of crack length on fatigue crack growth in deep sharp notches. Metall Trans A 18, 429–435 (1987). https://doi.org/10.1007/BF02648804

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  • DOI: https://doi.org/10.1007/BF02648804

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