Abstract
The analysis of the bone fracture behaviour is fundamental for prevention, diagnosis and treatment of traumas. In the present paper, an experimental analysis of the fracture behaviour of a bovine femoral cortical bone is carried out, where specimens are extracted from a diaphysis. Fracture toughness is computed by employing a two-parameter fracture model originally proposed for concrete. In order to take into account the possibility of crack deflection (kinked crack) due to osteons orientation, a modified version of such a model is here discussed. The fracture toughness results are then compared with those reported in the literature, related to a femur of an 18-month-old bovine.
Highlights
Bone is a specialised tissue which has both metabolic and mechanical functions [1,2,3]
An experimental analysis of the fracture behaviour of a bovine femoral cortical bone is carried out, where specimens are extracted from a diaphysis
Fracture toughness is computed by employing a two-parameter fracture model originally proposed for concrete
Summary
Bone is a specialised tissue which has both metabolic and mechanical functions [1,2,3]. The experimental campaign is conducted to determine the fracture toughness, by employing a two-parameter fracture model originally proposed for concrete [5], that is, for a quasi-brittle material showing a nonlinear slow crack growth before the peak load is reached. The fracture toughness results here obtained are compared with those related to a femur of an 18-month-old bovine [13], experimentally determined according to the standard ASTM E399-1 [14].
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