Damping Characteristics of Metal Matrix Composites.

Abstract

Damping test data of Gr/Al 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 Gr/6061 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; Strength(mechanics); Stiffness; Moire interferometry; Stress analysis; Thermal gradients; Acoustic emission; Transmission; Electromicroscopy.

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Document Details

Document Type
Technical Report
Publication Date
Apr 10, 1986
Accession Number
ADA167792

Entities

People

  • Mohan S. Misra

Organizations

  • Martin Marietta

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Acoustic Emissions
  • Aluminum
  • Aluminum Foil
  • Cantilever Beams
  • Composite Materials
  • Electron Microscopy
  • Emission
  • Materials
  • Materials Science
  • Measurement
  • Mechanics
  • Metal Matrix Composites
  • Metals
  • Modulus Of Elasticity
  • Shear Modulus
  • Stresses
  • Transmission Electron Microscopy

Fields of Study

  • Physics

Readers

  • Environmental Remediation and Restoration.
  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials

Technology Areas

  • Space