Accession Number : AD0684321

Title :   BEHAVIOR OF FIBER REINFORCED PLASTIC LAMINATES UNDER UNIAXIAL, BIAXIAL, AND SHEAR LOADINGS

Descriptive Note : Final rept. 1 Jul 1967-31 Jul 1968

Corporate Author : OKLAHOMA UNIV RESEARCH INST NORMAN

Personal Author(s) : Bert, Charles W ; Mayberry, Byron L ; Ray, John D

PDF Url : AD0684321

Report Date : Jan 1969

Pagination or Media Count : 124

Abstract : A series of mechanical tests was conducted on fiber glass-epoxy laminates. The loadings used were uniaxial tension; biaxial tension with principal-stress ratios of 1:2, 1:1, and 2:1; and pure shear. The most unique tests were those involving the biaxial loadings. These tests were carried out on a specially designed test fixture using a cable-pulley system in conjunction with a conventional universal testing machine. Data were obtained on the limit strength and apparent ultimate strength of flat laminates subjected to biaxial loading. Under biaxial loading, the parallel-ply lamination arrangement was found to be slightly superior to the cross-ply lamination arrangements. The shear tests were accomplished on thin-walled tubular specimens subjected to pure torsion.

Descriptors :   *COMPOSITE MATERIALS, EPOXY RESINS, GLASS TEXTILES, GRAPHITE, ISOTROPISM, LAMINATED PLASTICS, LOADS(FORCES), MATHEMATICAL MODELS, MECHANICAL PROPERTIES, REINFORCED PLASTICS, SHEAR STRESSES, STRAIN GAGES, STRESSES

Subject Categories : Laminates and Composite Materials
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE