Oblique and Lateral Impact Response Characteristics of the Denuded PMHS Thorax
Advisor:Bolte, John IV
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Publisher:The Ohio State University
Series/Report no.:The Ohio State University. Department of Mechanical Engineering Honors Theses; 2008
Thoracic trauma is directly responsible for 25% of all trauma related fatalities and indirectly contributes to another 25%. Since most thoracic trauma is caused by automobile crashes, the need for accurate data regarding thoracic impact grows continuously as more and more cars are on the road. Many of these automobile crashes are side impacts, which lead to a primary direction of force on the person inside to be oblique and anterior to lateral. The purpose of this project is to determine the response of a denuded human thorax to oblique and lateral blunt force impacts. Specifically the project will focus on the linear and rotational stiffness characteristics of a denuded post-mortem human subject (PMHS) thorax. There is a lack of data regarding anterior oblique and posterior oblique thoracic impact response characteristics and this project will focus on obtaining the response of the PMHS thorax to these types of impacts. The current impact tests and anthropomorphic test devices (ATDs) account for frontal and lateral direction crashes only. Response in the oblique direction was previously assumed to be similar to lateral responses, but new research has shown that this may not be the case. This project consisted of both designing the fixture to be used to support the thorax during testing as well as the experimentation and analysis of the results. The thoraces were obtained from fresh post-mortem human subjects and all research was done at the Injury Biomechanics Research Laboratory (IBRL). The data from this project will be used in conjunction with results from other projects at the IBRL in order to determine a more accurate definition of the biomechanical response of the human thorax during a vehicle crash. This data can then ultimately be used to create a new anthropomorphic test dummy thorax for use in crash testing.
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