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Full-Text Articles in Life Sciences
Methodology For Performing Whole Body Pmhs Underbody Blast Impact Testing, And The Corresponding Response Of The Hybrid Iii Dummy And The Finite Element Dummy Model Under Similar Loading Condition, Karthik Somasundaram
Methodology For Performing Whole Body Pmhs Underbody Blast Impact Testing, And The Corresponding Response Of The Hybrid Iii Dummy And The Finite Element Dummy Model Under Similar Loading Condition, Karthik Somasundaram
Wayne State University Theses
In recent wars, the use of improvised explosive devices and landmines has dramatically increased as a tactical measure to counter armored vehicles. These weapons not only deform and damage the vehicle structure but also produce serious vertical deceleration injuries to mounted occupants. The reported injury patterns largely differ from those in an automotive crash and are often more severe than those in other vertical loading scenarios such as pilot seat ejection, helicopter crash, parachute landing and fall from height. High kinetic energy predominately along the principal vertical (Z-axis) over a short duration makes the underbody blast (UBB) loading conditions unique …
Football Helmet Fitment And Its Effect On Helmet Performance, Ron Jadischke
Football Helmet Fitment And Its Effect On Helmet Performance, Ron Jadischke
Wayne State University Theses
A method and system to objectively quantify helmet fitment was designed and developed. It measures the pressure between the energy-absorbing material in the helmet and the athlete's head. This system is also capable of measuring surface pressure during impact events. A volunteer-based field study was conducted to quantify how helmets were fitting athletes in a real-life setting. The helmets fit athletes in varying degrees of tightness and evenness. Most athletes (59%) had the highest pressures in the frontal area and 29% had the highest pressure in the occipital area. A large-sized helmet on the Hybrid III headform represented how most …
Contact Pressure Distribution Of Osteochondral Defects Of The Knee: Effects Of Non-Vertical Walls, Scott Ensminger
Contact Pressure Distribution Of Osteochondral Defects Of The Knee: Effects Of Non-Vertical Walls, Scott Ensminger
Wayne State University Theses
Purpose: To examine the relationship between well-shouldered osteochondral defects and
defects of different geometries by studying their effects on rim stress concentration and
load redistribution in the human knee.
Methods: Ten fresh-frozen cadaveric knees were mounted at 30° of flexion in a materials
testing machine. Digital electronic pressure sensors were placed in the medial and lateral
compartments of the knee. Dynamic pressure readings were recorded throughout the
loading and holding phases as each knee was loaded to 700N and held for 5 seconds.
Artificial defects were created in each knee to simulate well-shouldered defects and
beveled-defects. Loading was repeated for …