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Effect of Graphite Aspect Ratio on Cast-iron Elastic Constants

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Nondestructive Characterization of Materials

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Abstract

Using a scattered-plane-wave ensemble-average model developed for composite materials, we calculated the effective elastic constants of cast iron. We focused on the effect of graphite-particle aspect ratio on the Young modulus. Between model and observation, we found good agreement. Oblate-spheroidal graphite flakes lower the elastic stiffness much more than do spheres. To obtain good model-measurement agreement, one must use graphite’s lower third-order-bound (Kröner-bound) elastic constants.

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Author information

Authors and Affiliations

  1. Institute for Materials Science and Engineering, National Institute of Standards and Technology, Boulder, Colorado, 80303-3328, USA

    Hassel Ledbetter

  2. Department of Mechanical Engineering and CIRES, University of Colorado, Boulder, Colorado, 80309-0449, USA

    Subhendu Datta

Authors
  1. Hassel Ledbetter
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  2. Subhendu Datta
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Editor information

Editors and Affiliations

  1. Fraunhofer Institut für zerstörungsfreie Prüfverfahren, Universität, Gebäude 37, 6600, Saarbrücken 11, Germany

    Paul Höller  & G. Dobmann  & 

  2. Institut für Werkstoffkunde, Rhein. Westf. Technische Hochschule, 5100, Aachen, Germany

    Viktor Hauk

  3. 159 Materials Research Laboratory, The Pennsylvania State University, 16802, University Park, Pennsylvania, USA

    Clayton O. Ruud

  4. Center for Nondestructive Evaluation, The Johns Hopkins University, 21218, Baltimore, Maryland, USA

    Robert E. Green Jr.

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© 1989 Springer-Verlag Berlin Heidelberg

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Ledbetter, H., Datta, S. (1989). Effect of Graphite Aspect Ratio on Cast-iron Elastic Constants. In: Höller, P., Hauk, V., Dobmann, G., Ruud, C.O., Green, R.E. (eds) Nondestructive Characterization of Materials. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-84003-6_42

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  • DOI: https://doi.org/10.1007/978-3-642-84003-6_42

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-84005-0

  • Online ISBN: 978-3-642-84003-6

  • eBook Packages: Springer Book Archive

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