Permanent deformation of compact bone monitored by acoustic emission

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Abstract

Uniaxial tension tests were performed on standardized specimens of bovine haversian bone to examine the contributions of mineral and collagen to permanent deformation in bone and to monitor the damage mechanisms occurring in permanent deformation using acoustic emission techniques. Test on control, decalcified and deproteinized groups of specimens demonstrated that the post-yield or ‘plastic’ slope of the stress-strain curve for unaltered bone is dependent on collagen properties, while the elastic modulus and yield phenomenon appear more dependent on the mineral phase. The results are consistent with a two-phase model for bone in which the mineral behaves as an elastic-perfectly plastic material when bound to the collagen fiber matrix. Acoustic emission from control specimens demonstrated considerable damage at yield and again just prior to fracture. Decalcified specimens, which were linearly elastic to failure, also exhibited significant acoustic emission just prior to fracture.

References (18)

  • J.D. Termine et al.

    Electron spin resonance study of irradiated bone and its constitutents

    Archs. Biochem. Biophys.

    (1970)
  • T. Aoba et al.

    High-voltage electron microscopic study of dislocations in hydroxyapatite

    J. dent. Res.

    (1978)
  • A.H. Burstein et al.

    Failure characteristics of bone and bone tissue

  • A.H. Burstein et al.

    Contribution of collagen and mineral to the elastic-plastic properties of bone

    J. Bone Jt. Surg.

    (1975)
  • J.M. Carlyle

    Imminent fracture detection of graphite/epoxy using acoustic emission

    Exp. Mech.

    (1978)
  • S.H. Carpenter et al.

    Sources of acoustic emission generated during plastic deformation of 7075 aluminum alloy

    Met. Trans. A

    (1977)
  • D.R. Carter et al.

    Compact bone fatigue damage — a microscopic examination

    Clin. Orthop.

    (1977)
  • R.H. Chang et al.

    A study of fatigue damage in composites by nondestructive testing techniques

  • J.M. Fitz-Randolph et al.

    The fracture energy and acoustic emission of a boron-epoxy composite

    J. Mat. Sci.

    (1972)
There are more references available in the full text version of this article.

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