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We recently developed a method to measure cortical bone fracture initiation toughness using a double-notched beam in four-point bending. This method was used to test the hypothesis that mineralization around the two notch roots is correlated with fracture toughness and crack extension (physical damage). Total energy absorbed to failure negatively correlated with average mineralization of the beam...
Studies of the fracture behavior of cortical bone have determined multiple toughening mechanisms that are active during propagation of a crack. Common methods for measuring bone fracture toughness use single‐notched specimens often in four‐point (SN4PB) or three‐point bending (SN3PB). A double‐notch four‐point bending (DN4PB) specimen is useful to study prefailure damage at the crack tip. Total failure...
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