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:

1973-05-01

Pagination or Media Count:

100.0

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 boronaluminum-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