Abstract
The tensile fracture stress ( σ fr) of longitudinal bovine tibia compact bone specimens was measured as a function of the length ( c) and radius of curvature ( r) of machined edge cracks. It was established that, for a given value of r, then σ Fr = Ac − 1 2 − B where A and B are constants. A fracture mechanics method was utilised to derive values of the fracture toughness (as defined by the critical stress intensity factor, K IC), the specific surface energy (γ) and the “intrinsic” flaw size ( c 0). The advantages and limitations of this approach are discussed.
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