Effect of microstructure on fatigue strength of bovine compact bones Effect of Microstructure on Fatigue Strength of Bovine Compact Bones

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Abstract

・rights:日本機械学会・rights:本文データは学協会の許諾に基づきCiNiiから複製したものである・relation:isVersionOf:http://ci.nii.ac.jp/naid/110004820601/

Despite its clinical importance in developing artificial bone, limited information is available regarding the microstructure with respect to the fatigue characteristics of bones. In this study, the fatigue characteristics of the bovine humerus and femur were investigated with respect to microstructures. Fatigue tests were conducted on the bovine humerus and femur at a stress ratio of 0.1 and a frequency of 10Hz. The fatigue strength of the plexiform bone is slightly greater than that of the haversian bone. This is because the volume fraction of voids in the haversian bone, which is the site of stress concentration, is higher than that of voids in the plexiform bone. Several microcracks are observed on the fatigue fracture surface of the haversian bone. The microcracks are short and their propagation directions are random. However, the number of the microcracks in the plexiform bone is very small. The microcracks are relatively long and their propagation directions are parallel to the longitudinal direction of the lamellar bone. Therefore, the crack requires relatively more energy to propagate across the lamella in the plexiform bone.

Journal

  • JSME International Journal Series A

    JSME International Journal Series A 48(4), 472-480, 2005

    The Japan Society of Mechanical Engineers

Cited by:  1

Codes

  • NII Article ID (NAID)
    110004820601
  • NII NACSIS-CAT ID (NCID)
    AA11179396
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    1344-7912
  • NDL Article ID
    7473670
  • NDL Source Classification
    ZN11(科学技術--機械工学・工業)
  • NDL Call No.
    Z53-E315
  • Data Source
    CJPref  NDL  NII-ELS  IR  J-STAGE 
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