Accession Number:

ADA051646

Title:

Characterization of Composite Laminates Using Tubular Specimens

Descriptive Note:

Technical rept. 1 Jan-1 Dec 76

Corporate Author:

AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OH

Personal Author(s):

Report Date:

1977-08-01

Pagination or Media Count:

56.0

Abstract:

Properties of a unidirectional graphiteepoxy T3005208 composite are characterized using tubular specimens. The elastic compliances based on the average invariants are found to describe fairly accurately the elastic behavior under various combined loadings. The equality between the tension and compression compliances and the symmetry of the compliance tensor are also established to within the experimental scatter. The matrixinterface-controlled failure is characterized by a second-order polynomial including a first-order term. This failure criterion agrees with the experimental observation that the compressive loading perpendicular to the fibers can increase the longitudinal shear stress required for failure. Author

Subject Categories:

  • Laminates and Composite Materials
  • Structural Engineering and Building Technology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE