Accession Number:

AD0747760

Title:

Crack-Tip Deformation Measurements Accompanying Fracture in Fibrous and Laminar Composites.

Descriptive Note:

Technical rept.,

Corporate Author:

WATERVLIET ARSENAL N Y

Personal Author(s):

Report Date:

1972-06-01

Pagination or Media Count:

33.0

Abstract:

Experimental measurements are described of the various types and stages of crack-tip deformation which accompanies crack growth in boron-aluminum sheet and in laminar epoxy bonded and solid steel plate. Optical interference and oblique-light photography are used to show the interaction of a crack with individual fibers and layers in the two systems for various tensile loads and specimen configurations. A fracture mechanics analysis is used to categorize the fracture behavior of boron-aluminum specimens of different fiber orientation. The crack-tip deformation in laminar steel plate under fatigue load is related to the interlayer bond strength and to the subsequent fracture behavior of the plate. Author, modified-PL

Subject Categories:

  • Laminates and Composite Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE