Glass: Plastic Glazing for Side Window Ejection Reduction

摘要

A driver's side door was designed, constructed and tested with a moveable glass-plastic, T-edged attached window installed to show the potential for ejection reduction by providing a plastic safety net during side impact. A prototype design, simulating a feasible, early production model of a moveable glass-plastic window, encapsulated and restrained by the edges of the window frame during impact was fabricated. Headform drop tests, dummy drop tests, accelerator sled tests and a side impact car crash test were performed using the glass-plastic, restrained edge glazing. Results showed the design of a safety net, glass-plastic window system was able to reduce occupant ejection without excessive head loading. The glass-plastic glazing was able to prevent ejection of 40 and 10 pound headform impacts from 13 and 38 feet respectively, Hybrid III dummy impacts with the dummy tipped 30 degree toward the glazing during sled tests at speeds up to 29 mph and a 6-year-old sized child dummy striking the window perpendicular to the door frame at 20 mph. A side impact car crash test at 35 mph showed the retention of the glass-plastic safety net ejection reduction function in spite of considerable side door distortion.