This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Effect of the Initial Position of the Head and Neck on the Dynamic Response of the Human Head and Neck to -Gx Impact Acceleration
Annotation ability available
Sector:
Language:
English
Abstract
In preparation of an analog of human head and neck, the reports by R. G. Snyder and others were noted which stated that initial position of the head and neck had a definite effect upon resulting response. An investigation was undertaken to attempt to quantitate this effect, as a part of a much larger study underway for several years.
Thirteen human volunteer subjects ranging from the 5th to the 97th percentile in sitting height were exposed to -Gx impact acceleration at peak sled accelerations of 6G and 10G. Two angles of the neck relative to chair and two angles of the head relative to the neck for a total of four conditions were tested for each subject for the 2 peak acceleration levels giving a total of 104 experiments. Instrumentation consisted of 6 accelerometers and two-axis rate gyro at the posterior spinous process of the first thoracic vertebral body, 6 accelerometers at the mouth, and a two-axis rate gyro at the top of the head. Three-dimensional photography from two orthogonally mounted onboard cameras was used also.
The input data at T1 along with the differential effects of initial head position relative to T1 on the linear acceleration at the origin of the head anatomical coordinate system and on the angular acceleration and angular velocity of the head will be presented along with the implications for modeling the response and a statistical comparison.
Recommended Content
Authors
- C. L. Ewing - Naval Aerospace Medical Research Laboratory Detachment
- D. J. Thomas - Naval Aerospace Medical Research Laboratory Detachment
- L. Lustick - Naval Aerospace Medical Research Laboratory Detachment
- E. Becker - Naval Aerospace Medical Research Laboratory Detachment
- G. Willems - Naval Aerospace Medical Research Laboratory Detachment
- W. H. Muzzy - Naval Aerospace Medical Research Laboratory Detachment
Citation
Ewing, C., Thomas, D., Lustick, L., Becker, E. et al., "The Effect of the Initial Position of the Head and Neck on the Dynamic Response of the Human Head and Neck to -Gx Impact Acceleration," SAE Technical Paper 751157, 1975, https://doi.org/10.4271/751157.Also In
References
- Ewing C. L. Thomas D. J. Beeler G. W. Patrick L. M. Gillis D. B. “Dynamic Response of the Head and Neck of the Living Human to -Gx Impact Acceleration.” Paper 680792 Proceedings of Twelfth Stapp Car Crash Conference 26 New York Society of Automotive Engineers, Inc. 1968
- Ewing C. L. Thomas D. J. Patrick L. M. Beeler G. W. Smith M. J. “Living Human Dynamic Response to -Gx Impact Acceleration. II. Accelerations Measured on the Head and Neck.” Paper 690817 Proceedings of Thirteenth Stapp Car Crash Conference 28 New York Society of Automotive Engineers, Inc. 1969
- Ewing C. L. Thomas D. J. “Human Dynamic Response to -Gx Impact Acceleration.” AGARD Conference Proceedings Oporto, Portugal June 1971
- Ewing C. L. Thomas D. J. “Human Head and Neck Response to Impact Acceleration.” Naval Aerospace Medical Research Laboratory Detachment New Orleans Monograph 21 August 1972
- Ewing C. L. Thomas D. J. “Torque versus Angular Displacement Response of Human Head to -Gx Impact Acceleration.” Paper 730976 Proceedings of Seventeenth Stapp Car Crash Conference New York Society of Automotive Engineers, Inc. 1973
- Becker E. B. “Preliminary Discussion of an Approach to Modeling Living Human Head and Neck Response to -Gx Impact Acceleration.” Human Impact Response King W. F. Mertz H. J. New York Plenum Press 321 329 1973
- Snyder R. G. Personal Communication 1973
- Clauser G. Kennedy K. “An Inquiry into the Ranges of Values Existing in the U. S. Navy Acceleration Study.” 6570th Aerospace Medical Research Laboratory Wright-Patterson Air Force Base, Ohio April 1975
- Gifford E. C. Provost J. R. Lazo J. “Anthropometry of Naval Aviators, 1964.” NAEC-ACEL Report 533 Naval Air Engineering Center, Aerospace Crew Equipment Laboratory Philadelphia, PA 1965
- Becker E. Willems G. “An Experimentally Validated 3-D Inertial Tracking Package for Application in Biodynamic Research.” Nineteenth Stapp Car Crash Conference San Diego, CA Society of Automotive Engineers, Inc. November 1975
- Thomas D. J. “Specialized Anthropometry Requirements for Protective Equipment Evaluation” AGARD Conference Proceedings 110 Aerospace Medicine Glasgow, Scotland September 1972
- Becker E. “A Photographic Data System for Determination of 3-Dimensional Effects on Multi-axes Impact Acceleration on Living Humans.” Automotive Safety Seminar of the Society of Photo-Optical Instrumentation Engineers December 1974