Accession Number:

ADA167792

Title:

Damping Characteristics of Metal Matrix Composites.

Descriptive Note:

Quarterly letter rept. no. 2, 11 Dec 85-10 Apr 86,

Corporate Author:

MARTIN MARIETTA AEROSPACE DENVER CO

Personal Author(s):

Report Date:

1986-04-10

Pagination or Media Count:

6.0

Abstract:

Damping test data of GrAl composites, from previous measurements at Martin marietta Denver Aerospace, CO suggest that composites exhibit higher damping than aluminum and titanium base structural alloys. Enhanced material damping of metal matrix composite MMC, as a structural material will significantly improve the stability control and reliability of space structures. The objective of so the present investigation are i to identify the mechanism and the source of damping in MMC P55 Gr6061 Al ii to determine the role of microstructural parameters, e.g., fiber volume, fiber orientation and interfiber spacing, and iii to define the role of fiber matrix interfaces. Keywords Analytical modeling Strengthmechanics Stiffness Moire interferometry Stress analysis Thermal gradients Acoustic emission Transmission Electromicroscopy.

Subject Categories:

  • Laminates and Composite Materials
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE