Quantitative evaluation of the fracturing process of natural composite on example of the cortical part of bone

• Autorzy: Ranatowski M. , Ranatowski E.
• Języki publikacji: EN

Abstrakty

EN

Modelling of local failures of the natural composite - bone is based on the solution of a number of problems involving the interaction of macrocrack with voids, crazes and micro cracks in heterogeneous material. Base upon the concept of microcrack precursor nucleation, a micromechanics model is used to study the formation of near-tip microcracking and consequent toughening effects. ultimately it causes a redistribution of stresses in the near-tip stress field of the macrocrack and this can affect the stress intensity factor (SIF) CTOD and fracture toughness.

Słowa kluczowe

EN

natural composite; stress state; constraint effect

• Wydawca: Politechnika Gdańska
• Czasopismo: Advances in Materials Science
• Rocznik: 2005
• Tom: Vol. 5, nr 1-3
• Strony: 69--74
• Opis fizyczny: Bibliogr. 6 poz., 5 rys.

Twórcy

autor

Ranatowski M.

• Specialist Hospital in Grudziądz, Department of Traumatic and Orthopaedic Surgery, Grudziądz, Poland

autor

Ranatowski E.

• University of Technology and Agriculture, Faculty ot Mechanical Engineering, Bydgoszcz, Poland

Bibliografia

• 1. Sih G.C., Paris P.C., Irwin G.R., On cracks in rectilinearly anisotropic bodies, International Journal of Fracture, 1965, No. 1, pp. 189-223.
• 2. Kachanov M. et al., Mechanics of crack-microcrack interactions, Mechanics of Materials, 1990, Vol. 10, pp. 59-71.
• 3. Wiliams M.L., On the stress distribution at the base of a stationary crack, Journal of Applied Mechanics, 1957, Vol. 24, pp. 109-114.
• 4. Mou Y., Han R.P.S., Influence of damage in the vanity of a macrocrack tip, Engineering Fracture Mechanics, 1996, Vol. 55, pp. 617-632.
• 5. Nalla R. K. et. al., Mechanistic fracture criteria for the failure of human cortical bone, Nature materials, March 2003, Vol. 2, pp. 164-168.
• 6. Ranatowski M., Ranatowski E., Analysis of the fracturing process of natural composite on example of the cortical part of bone, Advances in Materials Science, 2005, Vol 5, No. 3 (8).