Accession Number : AD0776213

Title :   Effects of the Anisotropic Elastic Modulus of a Boron-Fiber-Reinforced Aluminum-Matrix Composite on Specimens Calibrated for Crack-Length Determination.

Descriptive Note : Final rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Sullivan,A. M. ; Stoop,J.

Report Date : 27 FEB 1974

Pagination or Media Count : 15

Abstract : In an investigation undertaken to assess the suitability of the fracture mechanics parameter K sub c for determining the fracture resistance of a boron-fiber-reinforced aluminum-matrix composite, calibration curves designed to measure crack length under load were prepared with specimens at various angles to the fiber axis of the sheet. The effect of the anisotropy of Young's modulus E is reflected in the curves obtained. Scatter in the data indicates that this is not a reliable method for determining crack length for this material, a boron-fiber/6061-aluminum composite. (Author)

Descriptors :   *Fiber reinforced composites, Aluminum alloys, Matrix materials, Boron, Fiber reinforcement, Composite materials, Fracture(Mechanics), Resistance, Modulus of elasticity, Cracks, Length, Anisotropy

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE