Accession Number : AD0769927

Title :   Damage Interaction in Composites.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s) : Gray,Terry D.

Report Date : MAY 1973

Pagination or Media Count : 100

Abstract : The purpose of the experimental study was to investigate the effects of foreign object damage (FOD) on the bending fatigue characteristics of a composite material, unidirectional boron/aluminum-6061. Fatigue curves were generated for a control group and each of four levels of FOD. The composite was further characterized by static tensile, static bending, and nondestructive tests. All tests were carried out at room temperature. A similar damage and fatigue analysis was done for a titanium alloy, Ti-6Al-4V, to provide baseline data with which to compare the composite. It was concluded that the composite suffers more physical damage and a greater percentage reduction in fatigue strength than does Ti-6Al-4V for a given impact energy. (Modified author abstract)

Descriptors :   *Composite materials, *Fatigue(Mechanics), Aluminum alloys, Boron, Bending, Parallel orientation, Fibers, Metals, Nonmetals, Matrix materials, Damage, Nondestructive testing, Tensile properties, Impact tests, Titanium alloys, Theses

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE