A new laminated windshield has been developed with the express purpose of reducing the danger of laceration to a vehicle occupant who is thrown into it. This is accomplished by using a thin, chemically strengthened sheet of glass for the inner ply. This inner layer is provided with stress raisers that will cause it to break before excessively high concussion forces can be developed in the occupant's skull. The windshield and its operating principles are fully described.
Module and full-scale tests are described and results are reported and discussed. They show that the new windshield does indeed almost eliminate facial laceration without causing intolerable concussion forces.
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