The specific aims of this study were 1) the development of biomechanical response corridors of the head to blunt ballistic temporo-parietal impact, 2) development of injury criteria for the prediction of temporo-parietal skull fracture, 3) assessment of biomechanical surrogates to blunt ballistic temporo-parietal head impact and 4) assessment of a frangible surrogate for evaluating fracture of the skull to blunt ballistic impact. Biomechanical corridors were established from eight post-mortem human subjects (PMHS). Deformation-time, force-time and force-deformation corridors were defined for the temporo-parietal region of the head. A number of measured and calculated variables were investigated as fracture predictors. Blunt Criterion (BC) was found to be the best predictor of skull fracture. Soft tissue was found to be a significant factor in fracture prediction. Three biomechanical surrogates were evaluated against the corridors established from the PMHS. The behind armour blunt trauma (BABT) headform was found to best fit the PMHS corridors. Injury criteria were also proposed by correlating BABT load cell force to BC. A frangible model was investigated and was found not be representative of the fracture tolerance of the human temporo-parietal skull. The results from this research provide the foundation for future investigation into blunt ballistic head trauma. The injury assessment technology developed in this research can be used for evaluating the risk of temporo-parietal skull fracture due to blunt ballistic impact.