Damping Characteristics of Metal Matrix Composites.

Abstract

Nine metal matrix composite materials were tested over the frequency range 4 to 10,000 Hz, at room temperature, to determine their damping properties. Cantilever beam samples were measured using both a logarithmic decrement test and a resonant dwell test to cover the entire frequency range. At a peak stress of 5 ksi, measured loss factors ranged from about .0003 to .004, with the graphite/aluminum composites generally showing the best (highest) performance (loss factor). These values are measurably no greater than those obtainable on the unreinforced matrix alloys. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1982
Accession Number
ADA114633

Entities

People

  • Nancy S. Timmerman

Organizations

  • BBN Technologies

Tags

Communities of Interest

  • Advanced Electronics
  • Human Systems
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Aluminum
  • Aluminum Alloys
  • Cantilever Beams
  • Composite Materials
  • Contracts
  • Engineers
  • Frequency
  • Graphitic Materials
  • Information Processing
  • Mechanics
  • Metal Matrix Composites
  • Metals
  • Military Research
  • Resonant Frequency
  • Silicon Carbide
  • Test Methods

Fields of Study

  • Materials science

Readers

  • Acoustics.
  • Mechanical Engineering/Mechanics of Materials.
  • Reinforced Composite Materials