Mechanical and structural anisotropy of individual osteons in cortical bone tissue at high spatial resolutions

Davide Carnelli, Pasquale Vena, Christine Ortiz, Roberto Contro

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Anisotropy is one of the most peculiar aspects of the mechanics of lamellar bone tissue. Due to the tissue hierarchical structure, its anisotropic mechanical behaviour is a concept that should be treated only with strict relationship to the length scale of investigation, and it is expected to be length scale dependent and to undergo homogenization effects. This work aims to quantify the effect of length scale on the anisotropy of individual osteons of cortical bone. Nanoindentation tests allowed the identification of a modulation of the mechanical properties related to the geometrical features of the lamellar structure of secondary osteons. This periodic modulation is due to the tissue lamellar structure. A size effect and a critical size at which homogenization of mechanical response is achieved were found. The hierarchical arrangement of lamellar bone resulted to be a major determinant for modulation of mechanical properties and anisotropic mechanical behaviour of the tissue.

Original languageEnglish
Title of host publicationAES-ATEMA International Conference Series - Advances and Trends in Engineering Materials and their Applications
Pages49-53
Number of pages5
Publication statusPublished - 2010
Event1st Brixen International Convention on Advances and Trends in Engineering Materials and their Applications, AES-ATEMA'2010 - Brixen, Dolomites, Italy
Duration: Jul 19 2010Jul 23 2010

Other

Other1st Brixen International Convention on Advances and Trends in Engineering Materials and their Applications, AES-ATEMA'2010
CountryItaly
CityBrixen, Dolomites
Period7/19/107/23/10

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Keywords

  • Anisotropy
  • Hierarchical structure
  • Homogenization
  • Lamellar bone
  • Nanoindentation
  • Secondary osteons
  • Size effect

ASJC Scopus subject areas

  • Mechanics of Materials
  • Materials Science(all)

Cite this

Carnelli, D., Vena, P., Ortiz, C., & Contro, R. (2010). Mechanical and structural anisotropy of individual osteons in cortical bone tissue at high spatial resolutions. In AES-ATEMA International Conference Series - Advances and Trends in Engineering Materials and their Applications (pp. 49-53)