Fracture criterion on the basis of uniformity of plastic work of polycrystalline ductile materials under various stress states

Ma, Zhichao; Zhao, Hongwei; Liu, Ren

doi:10.1007/s00707-016-1606-5

Cited by 5 publications

(1 citation statement)

References 18 publications

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“…The significant difference between σ b at both temperatures indicated that the strength of organic matters inside the cortical bone was sensitive to temperature. The effect of temperature on bone strength has been explained by the strength weakening mechanism on basis of a single critical flaw and Griffith energy release hypothesis [21]. Considering that the osteon and bone lamella were approximately parallel to the long axis of porcine tibia, corresponding to θ of 0°and 90°, the external stresses were parallel and perpendicular to a group of osteon and bone lamella, respectively.…”

Section: Experiments and Discussionmentioning

confidence: 99%

Mechanical properties of cortical bones related to temperature and orientation of Haversian canals

Ma¹,

Qiang²,

Zhao³

et al. 2020

Mater. Res. Express

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The understanding of mechanical performances and microscopic failure mechanisms of cortical bones under service condition is necessary prerequisite of fracture prevention, which would support the development of bone tissue engineering and design of bionic bones. By using miniaturized horizontal in situ compression tester, the effects of both temperature and sampling orientations on the compressive strengths and fracture morphologies were investigated. The significant difference between fracture strengths and compressive strains at various temperatures indicated that the cortical bone was sensitive to temperature. Direct experimental evidences revealed the gradually fibrotic trend of fracture surfaces as a function of sampling orientation. Through the Haversian canals distribution analysis, the relationship between the distribution of Haversian canals and fracture path was established. Essentially, the competition between high density Haversian canals and stress concentration factor determines the initiation and propagation of cracks.

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Section: Experiments and Discussionmentioning

confidence: 99%