The analysis of the bone fracture behaviour is fundamental for prevention, diagnosis andtreatment of traumas. In the present paper, an experimental campaign on fracture behaviourof bovine femoral cortical bones is conducted to characterise the fracture toughness,KSIC , which is related to the structure and load-bearing capacity of bones. Firstly, KSIC is evaluatedthrough a two-parameter model originally proposed for quasi-brittle materials. Totake into account the crack deflection (kinked crack) due to osteons orientation, the two-parametermodel is modified by applying the Castigliano theorem. Fracture toughnessresults here obtained are compared with those related to a femur of an 18-month-oldbovine, available in the literature.
Modified two-parameter fracture model for bone
RONCHEI, Camilla;
2017-01-01
Abstract
The analysis of the bone fracture behaviour is fundamental for prevention, diagnosis andtreatment of traumas. In the present paper, an experimental campaign on fracture behaviourof bovine femoral cortical bones is conducted to characterise the fracture toughness,KSIC , which is related to the structure and load-bearing capacity of bones. Firstly, KSIC is evaluatedthrough a two-parameter model originally proposed for quasi-brittle materials. Totake into account the crack deflection (kinked crack) due to osteons orientation, the two-parametermodel is modified by applying the Castigliano theorem. Fracture toughnessresults here obtained are compared with those related to a femur of an 18-month-oldbovine, available in the literature.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
