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Fracture Behavior of the Skull Frontal Bone Against Cylindrical Surfaces
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English
Abstract
A test program has been conducted to determine the fracture behavior of the human frontal bone against two different rigid cylindrical surfaces; one surface was of 1 in. radius and one was of 5/16 in. radius; both were 6½ in. long. The purpose of this research program was to provide human tolerance data which would:
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1.
Assist in the design of structures likely to be impacted by the human head.
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2.
Extend the calibration range of frangible headforms.
Twelve cadavers were tested in this program; seven against the 1 in. radius cylinder and five against the 5/16 in. radius cylinder. The test arrangement employed a guided drop of the test surface against a stationary head which was free to rebound. Drop heights were increased progressively until borderline fractures were obtained.
The large radius shape consistently yielded linear fractures indicating that it is effectively a blunt surface. Fracture loads ranged 950-1650 lb. The small radius shape yielded two linear fractures and three localized elliptical fractures indicating that it is in the transition range between a blunt and concentrated surface. Fracture loads ranged 700-1600 lb.
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Citation
Hodgson, V., Brinn, J., Thomas, L., and Greenberg, S., "Fracture Behavior of the Skull Frontal Bone Against Cylindrical Surfaces," SAE Technical Paper 700909, 1970, https://doi.org/10.4271/700909.Also In
References
- Hodgson V. R. “Tolerance of the Facial Bones to Impact.” American Journal of Anatomy 120 1967 113
- Nahum A H. Gatts J. D. Gadd C. W. Danforth J. “Impact Tolerance of the Face and Skull.” Proceedings of Twelfth Stapp Car Crash Conference 26 paper 680785 New York Society of Automotive Engineers, Inc. 1968
- Melvin J. W. Fuller P. M. Daniel R. P. Pavliscak G. M. “Human Head and Knee Tolerance to Localized Pressure.” Paper 690477 SAE Mid-Year Meeting Chicago May 1969
- Gurdjian E. S. Webster J. E. Lissner H. R. “Observations on Prediction of Fracture Site in Head Injury.” Radiology 60 1953 2 226 235
- Hodgson V. R. Patrick L. M. “Dynamic Response of the Human Cadaver Head Compared to a Simple Mathematical Model.” Proceedings of Twelfth Stapp Car Crash Conference 26 paper 680784 New York Society of Automotive Engineers, Inc. 1968
- Brinn J. “Two Anthropometric Test Forms - The Frontal Bone of the Skull and a Typical Facial Bone.” Proceedings of Thirteenth Stapp Car Crash Conference 28 paper 690816 New York Society of Automotive Engineers, Inc. 1969