INFLUENCE OF SOME PARAMETERS ON THE BEHAVIOUR OF THE VHR LAMINATED WINDSCREEN INFLICTING SMALL OR NO CUTS

INFLUENCE DE CERTAINS PARAMETRES SUR LE COMPORTEMENT DU PARE-BRISE FEUILLETE EN VHR A POUVOIR DE LACERATION FAIBLE OU NUL

The new VHR windscreen comprises a very thin internal sheet, 1.3 mm thick, and a thicker external sheet 2.8 mm thick: the plastic material between the two sheets is polyvinylbutyral (0.76 mm thick). A study is made of the effect of reducing the thickness of the internal reinforced glass sheet and of increasing the thickness of the plastics sheet on the laceration property of the windscreen. The influence of these factors is examined by comparing the behaviour of the VHR windscreen as described above and that of a windscreen in which the thickness of the internal glass sheet was reduced by 0.2 mm and the thickness of the plastics sheet was increased by 0.38 mm. During impact of the dummy representing the head of the vehicle occupant, all safety performance values were recorded. The laceration property of the windscreen was estimated using as a base the laceration scale utilized at the Wayne State University. The new reinforced glass laminated windscreen and the modified windscreen were found to inflict far less severe cuts compared to ordinary glass laminated windscreen. The reduction in the thickness of the internal sheet contributes to this improvement; but an increase in the thickness of the plastics sheet does not result in any marked improvement. /TRRL/

  • Authors:
    • Plumat, E
    • Vanmat, EWK
    • Baudin, P
  • Publication Date: 1972

Language

  • French

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00097695
  • Record Type: Publication
  • Source Agency: Road Safety Study and Research Fund, Belgium
  • Files: ITRD, TRIS
  • Created Date: Sep 30 1975 12:00AM