CAR CRASH TESTS OF EJECTION REDUCTION BY GLASS-PLASTIC SIDE GLAZING

1983 ejection statistics are reviewed; half of the passenger car ejections, some 36,000 people of whom 5,346 died, are through glazing areas. Previous work has shown the remarkable strength of thin plastic coatings, developed for windshield anti-laceration applications, when applied to the inside of tempered glass side windows, in reducing ejection. In the present work, two tests were made, each with the NHTSA Moving Deformable Barrier (MDB) at 39 mph and all four wheels turned at 26 degrees, striking a stationary Volkswagen Rabbit in a perpendicular impact. The Alfred I. DuPont de Nemours Company provided the plastic coating on tempered glass side windows. The plastic layer extended beyond the sides and top of the glass to be wrapped around steel strips bolted to the window frame. On vehicle impact, the tempered glass broke, but the pieces were held in place by the plastic layer, which then deformed outward as a "safety net" with head contact. In the first test, with a low and short striking vehicle hood line simulation, the top of the door bent out as the bottom was pushed in, and the head bulged the glazing out to hit the elevated base plate of the MDB, although the "safety net" held. In the second test, with a more typical vehicle hood line effect simulation, the "safety net" again held, giving a HIC of 616. A window design to allow window up and down motion with the plastic layer movably secured with a "T edge" in the window channel is under construction. An eight inch sphere Glazing Test Device is being developed, with a skin simulation / chamois cost on the lower hemisphere for laceration measurement, accelerometers for Head Injury Criterion (HIC) measurement, and a weight variable from 10 to 20 to 40 pounds, for ejection reduction measurement.

  • Availability:
  • Supplemental Notes:
    • Presented at SAE Government/Industry Meeting and Exposition Washington, D.C., May 20-23, 1985.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Clark, C C
    • Sursi, P
  • Publication Date: 1985

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00451296
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: SAE 851203, HS-039 102
  • Files: HSL, USDOT
  • Created Date: Dec 31 1985 12:00AM