Accession Number : AD0684321
Title : BEHAVIOR OF FIBER REINFORCED PLASTIC LAMINATES UNDER UNIAXIAL, BIAXIAL, AND SHEAR LOADINGS.
Descriptive Note : Final rept. 1 Jul 67-31 Jul 68,
Corporate Author : OKLAHOMA UNIV RESEARCH INST NORMAN
Personal Author(s) : Bert,Charles W. ; Mayberry,Byron L. ; Ray,John D.
Report Date : JAN 1969
Pagination or Media Count : 122
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. (Author)
Descriptors : (*COMPOSITE MATERIALS, MECHANICAL PROPERTIES), REINFORCED PLASTICS, GLASS TEXTILES, EPOXY RESINS, LAMINATED PLASTICS, ISOTROPISM, GRAPHITE, LOADS(FORCES), MATHEMATICAL MODELS, STRESSES, STRAIN GAGES, SHEAR STRESSES
Subject Categories : Laminates and Composite Materials
Distribution Statement : APPROVED FOR PUBLIC RELEASE