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Fracture Toughness Test with a Sharp Notch Introduced by Focussed Ion Beam

  • Letters in Fracture and Micromechanics
  • Published:
International Journal of Fracture Aims and scope Submit manuscript

Abstract

The validity of fracture toughness data obtained from tests with V-notched bending bars is affected by the notch root radius and the presence of R-curve behavior. A macroscopic test specimen has been developed that contains a notch introduced by focused ion beam machining. This produces a notch root radius of less than 0.1 μm, so that notch effects can be ignored for most ceramics. Also, due to the very small notch depths the influence of a rising R-curve should be very close to that of natural cracks. First tests, carried out on a Ce-doped zirconia ceramic resulted in a toughness of K Ic ≈ 5.9 MPa√m.

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References

  • Benthem J.P. (1977) State of stress at the vertex of a quarter-infinite crack in a half-space. International Journal of Solids and Structures 13: 479–492

    Article  MATH  Google Scholar 

  • Damani R.J., Gstrein R., Danzer R. (1996) Critical notch-root radius effect in SENB-S fracture toughness testing. Journal of the European Ceramic Society 16: 695–702

    Article  CAS  Google Scholar 

  • Fett T., Munz D. (1997) Stress Intensity Factors and Weight Functions. Computational Mechanics Publications, Southampton

    Google Scholar 

  • Kübler J. (1997) Fracture toughness using the SEVNB method: Preliminary results. Ceramic Engineering & Science Proceedings 18: 155–162

    Article  Google Scholar 

  • Marshall D.B., Swain M.V. (1988) Crack resistance curves in magnesia-partially-stabilized zirconia. Journal of the American Ceramic Society 71: 399–407

    Article  CAS  Google Scholar 

  • Munz, D., Fett, T. (1999). CERAMICS, Failure, Material Selection, Design, Springer-Verlag,

  • Munz D. (2007) What can we learn from R-curve measurements?. Journal of the American Ceramic Society 90: 1–15

    Article  CAS  Google Scholar 

  • Nishida T., Pezzotti G., Mangialardi T., Paolini A.E. (1996) Fracture mechanics evaluation of ceramics by stable crack propagation in bend bar specimens. Fracture Mechanics of Ceramics 11: 107–114

    CAS  Google Scholar 

  • Rauchs G., Fett T., Munz D. (2002) R-curve behaviour of 9Ce-TZP zirconia ceramics. Engineering Fracture Mechanics 69: 389–401

    Article  Google Scholar 

  • Steinbrech R., Schmenkel O. (1988) Crack resistance curves for surface cracks in alumina. Comm. Journal of the American Ceramic Society 71: C271–C273

    CAS  Google Scholar 

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Authors and Affiliations

  1. Universität Karlsruhe, Institut für Keramik im Maschinenbau, Haid-und-Neu-Str. 7, D-76131, Karlsruhe, Germany

    Theo Fett, Dominic Creek & Susanne Wagner

  2. Forschungszentrum Karlsruhe, Institut für Materialforschung II, Karlsruhe, Germany

    Gabriele Rizzi

  3. Universität Göttingen, Institut für Materialphysik, Göttingen, Germany

    Cynthia A. Volkert

Authors
  1. Theo Fett
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  2. Dominic Creek
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  3. Susanne Wagner
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  4. Gabriele Rizzi
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  5. Cynthia A. Volkert
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Correspondence to Theo Fett.

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Fett, T., Creek, D., Wagner, S. et al. Fracture Toughness Test with a Sharp Notch Introduced by Focussed Ion Beam. Int J Fract 153, 85–92 (2008). https://doi.org/10.1007/s10704-008-9288-1

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  • DOI: https://doi.org/10.1007/s10704-008-9288-1

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