Glazing Effects of Door or Deformations in Crashes, Part 2 970121
The non-uniformity of temper of 27 motor vehicle door windows as measured by the polarization method is presented, illustrated by two photographs of windows between crossed polarizers. The tempered glass fracture characteristics of 11 Geo Prism door windows are illustrated by two video frames of the windows after fracturing by door deformation slowly applied at bumper level. The speed of some moderate sized fragments was measured to exceed 60 km/h, due to strain relief rather than contact by an intruding object. Glazing history is briefly summarized, with our support of the NHTSA conclusion that more than 1300 lives per year could be saved cost effectively by replacing tempered glass by an “advanced glazing.”
Also in:
Occupant Protection and Injury Assessment in the Automotive Crash Environment-SP-1231, SAE 1997 Transactions - Journal of Passenger Cars-V106-6
Related Topics:
Windows and windshields
Glass
Frames
Doors
Historical reference
Technical review
Crashes
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