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Aging and loading rate effects on the mechanical behavior of equine bone

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  • Biological Materials Science
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Abstract

Whether due to a sporting accident, high-speed impact, fall, or other catastrophic event, the majority of clinical bone fractures occur under dynamic loading conditions. However, although extensive research has been performed on the quasi-static fracture and mechanical behavior of bone to date, few high-quality studies on the fracture behavior of bone at high strain rates have been performed. Therefore, many questions remain regarding the material behavior, including not only the loading-rate-dependent response of bone, but also how this response varies with age. In this study, tests were performed on equine femoral bone taken post-mortem from donors 6 months to 28 years of age. Quasi-static and dynamic tests were performed to determine the fracture toughness and compressive mechanical behavior as a function of age at varying loading rates. Fracture paths were then analyzed using scanning confocal and scanning-electron microscopy techniques to assess the role of various microstructural features on toughening mechanisms.

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Authors and Affiliations

  1. Materials Science & Engineering Program, University of California at San Diego, 9500 Gilman Dr., La Jolla, CA, 92093-0418, USA

    Robb M. Kulin

  2. NanoEngineering Department, University of California at San Diego, 9500 Gilman Dr., La Jolla, CA, 92093-0448, USA

    Fengchun Jiang & Kenneth S. Vecchio

Authors
  1. Robb M. Kulin
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  2. Fengchun Jiang
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  3. Kenneth S. Vecchio
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Correspondence to Kenneth S. Vecchio.

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Kulin, R.M., Jiang, F. & Vecchio, K.S. Aging and loading rate effects on the mechanical behavior of equine bone. JOM 60, 39–44 (2008). https://doi.org/10.1007/s11837-008-0069-0

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  • DOI: https://doi.org/10.1007/s11837-008-0069-0

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