Microcracking Morphology and Structure Optimization of Compact Bovine Bone Under Impact Loading

摘要

Deterioration of bone is a progress of damage accumulation in the form of microcracking spanning a wide range of dimensional scales. To examine the microcracking morphology of compact bone subjected to impact loading, non-notched beam specimens of compact bovine femur were loaded with an instrumented Charpy impact system under various impact energy levels. The middle sections of the tested specimens was examined the by Frost's basic funsion technique by Frost (Med Bull 8:25-35, 1960) to investigate the microcracking morphology. The effects of size of osteon on the mechanical integrity of ostoen structure were also investigated by using of a finite element modeling (FEM), micromechanics, and constrained optimization method. The damage mechanism and energy dissipation were analyzed.