Accession Number : AD0736345

Title :   Effect of Fiber Direction on the Instability of Single-Layer Resin-Impregnated Glass-Cloth Cylinders under Torsion

Descriptive Note : Technical rept.

Corporate Author : STANFORD UNIV CA

Personal Author(s) : Bank, II, Milton H

PDF Url : AD0736345

Report Date : Sep 1971

Pagination or Media Count : 66

Abstract : An experimental study of the torsional stability of single-layer open-weave glass- cloth plastic-impregnated shells is described. The design of a test apparatus and appropriate instrumentation is discussed. In all, 128 tests were made on 65 specimens for five different fiber orientations. Statistical analysis of the results showed that fiber directions affected both the torsional stiffness and buckling strength. An increase in strength due to fiber orientation was matched with a reduction in stiffness. It is demonstrated, that the Southwell method of data analysis is pertinent to the torsion problem.

Descriptors :   *REINFORCED PLASTICS, *SHELLS(STRUCTURAL FORMS), ALIGNMENT, BUCKLING, COMPOSITE MATERIALS, CYLINDRICAL BODIES, EPOXY RESINS, FIBERS, GLASS TEXTILES, STABILITY, TORSION

Subject Categories : Laminates and Composite Materials
      Structural Engineering and Building Technology

Distribution Statement : APPROVED FOR PUBLIC RELEASE