PREDICTION OF FAILURE DUE TO MECHANICAL DAMAGE IN THE OUTER HOOP WINDINGS IN FIBERGLASS PLASTIC PRESSURE VESSELS

Abstract

A new method of estimating the effect of mechanical damage on the burst strength of glass-filament-wound plastic rocket cases has been developed. Only one type of failure was considered, namely unwinding and splitting of a strip in the outermost hoop-wound layers. This kind of event generally results in the loss of most of the layer, which contributes more than half of the wall strength. For the case of glass filaments in epoxy resin now in common use, a cut only 0.007 in. deep is predicted to be critical for a composite hoop stress of 80,000 psi. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 18, 1962
Accession Number
AD0271693

Entities

People

  • J.a. Kies

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Epoxy Resins
  • Fiberglass
  • Filaments
  • Materials
  • Plastics
  • Pressure Vessels
  • Reinforced Plastics
  • Resins
  • Rocket Engine Cases
  • Rockets
  • Splitting

Readers

  • Electrical Engineering
  • Mechanical Engineering/Mechanics of Materials.