14. High Damping in Piezoelectric Reinforced Metal Matrix Composites

  1. Manuel E. Brito,
  2. Peter Filip,
  3. Charles Lewinsohn,
  4. Ali Sayir,
  5. Mark Opeka and
  6. William M. Mullins
  1. Ben Poquette,
  2. Jeff Schultz,
  3. Ted Asare,
  4. Stephen Kampe and
  5. Alex Aning

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291283.ch14

Developments in Advanced Ceramics and Composites: Ceramic Engineering and Science Proceedings, Volume 26, Number 8

Developments in Advanced Ceramics and Composites: Ceramic Engineering and Science Proceedings, Volume 26, Number 8

How to Cite

Poquette, B., Schultz, J., Asare, T., Kampe, S. and Aning, A. (2005) High Damping in Piezoelectric Reinforced Metal Matrix Composites, in Developments in Advanced Ceramics and Composites: Ceramic Engineering and Science Proceedings, Volume 26, Number 8 (eds M. E. Brito, P. Filip, C. Lewinsohn, A. Sayir, M. Opeka and W. M. Mullins), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291283.ch14

Author Information

  1. Virginia Polytechnic Institute and State University Materials Science and Engineering Dept., 213 Holden Hall Blacksburg, VA 24061

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2005

ISBN Information

Print ISBN: 9781574982619

Online ISBN: 9780470291283

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Keywords:

  • composites;
  • piezoelectric;
  • materials;
  • pyroelectric;
  • ceramic

Summary

Piezoelectric-reinforced metal matrix composites (PR-MMCs) show promise as high damping materials for structural applications. Most structural materials are valued based on their stiffness and strength; however, stiff materials have limited ability to dampen mechanical or acoustical vibrations. PR-MMCs represent a potential material system capable of exhibiting increased damping ability, as compared to the structural metal matrix alone. In addition, the piezoelectric ceramic particles may also augment the strength of the matrix, creating a multifunctional composite. In this work, the damping behavior of PR-MMCs created by the addition of barium titanate (BaTiO3) discontinuous reinforcement in bearing bronze (Cu- 10w% Sn) matrices has been studied. The degree of damping has been found to rely on the reinforcement volume fraction. This additional damping is thought to be attributed to twinning in the pyroelectric domains of the reinforcement This research has been sponsored by the Army Research Office under contract no. DAAD19–01–1–0714.