MICROCRACKS INTERACTION IN HAVERSIAN CORTICAL BONE

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RAEISI NAJAFI A.; ARSHI A.R.; ESLAMI M.R.; Fariboz s.; MOEINZADEH M.

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Journal Paper

Paper Information

Journal: AMIRKABIR Year:2005 | Volume:16 | Issue:61-A Page(s): 47-55

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Title

MICROCRACKS INTERACTION IN HAVERSIAN CORTICAL BONE

Author(s)

Keywords

LINEAR ELASTIC FRACTURE MECHANICS

MICROCRACK INTERACTION

HAVERSIAN CORTICAL BONE

MICROSTRUCTURE

EDGE DISLOCATION

Abstract

Microcracks development in cortical bone occurs when the tissue is subjected to cyclic and fatigue loading. This phenomenon reduces the fracturer resistance of bone. The underlying mechanisms governing bone fracture, however, require a more thorough study. To this effect a two-dimensional micromechanical fiber - ceramic matrix composite material model for the tissue is presented in this paper. Here, the interstitial tissue was modeled as a matrix and the osteon was modeled as a fiber, followed by the implementation of the LINEAR ELASTIC FRACTURE MECHANICS theory. The solution for the EDGE DISLOCATIONs, as a Green's functions, was adopted to formulate a system of singular integral equations for the radial microcracks in the matrix in vicinity of the osteon. The effects of microstructural morphology and heterogeneity of HAVERSIAN CORTICAL BONE upon the fracture behavior was investigated by computing the stress intensity factor near the microcracks tips. The results indicated that interaction between osteon and microcracks was limited to the vicinity of the osteon. Furthermore, analysis of the MICROCRACK INTERACTIONs was an indication of the effects of microcrack configuration upon Stress Intensity Factor in shape of either stress amplification or stress shielding.

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APA: Copy

RAEISI NAJAFI, A., ARSHI, A.R., ESLAMI, M.R., Fariboz, s., & MOEINZADEH, M.. (2005). MICROCRACKS INTERACTION IN HAVERSIAN CORTICAL BONE. AMIRKABIR, 16(61-A), 47-55. SID. https://sid.ir/paper/541263/en

Vancouver: Copy

RAEISI NAJAFI A., ARSHI A.R., ESLAMI M.R., Fariboz s., MOEINZADEH M.. MICROCRACKS INTERACTION IN HAVERSIAN CORTICAL BONE. AMIRKABIR[Internet]. 2005;16(61-A):47-55. Available from: https://sid.ir/paper/541263/en

IEEE: Copy

A. RAEISI NAJAFI, A.R. ARSHI, M.R. ESLAMI, s. Fariboz, and M. MOEINZADEH, “MICROCRACKS INTERACTION IN HAVERSIAN CORTICAL BONE,” AMIRKABIR, vol. 16, no. 61-A, pp. 47–55, 2005, [Online]. Available: https://sid.ir/paper/541263/en

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