Title page for ETD etd-05112005-114546

Type of Document Master's Thesis
Author Poquette, Ben David
Author's Email Address bpoquett@vt.edu
URN etd-05112005-114546
Title Damping Behavior in Ferroelectric Reinforced Metal Matrix Composites
Degree Master of Science
Department Materials Science and Engineering
Advisory Committee
Advisor Name Title
Kampe, Stephen L. Committee Chair
Aning, Alexander O. Committee Member
Pickrell, Gary R. Committee Member
Reynolds, William T. Jr. Committee Member
  • Dispersion Strengthening
  • Metal matrix composites
  • Damping
  • Ferroelectricity
  • Electroless Plating
Date of Defense 2005-04-29
Availability unrestricted
Ferroelectric-reinforced metal matrix composites (FR-MMCs) show promise as high damping materials for structural applications. Most structural materials are valued based on their stiffness and strength; however, stiff materials typically have limited inherent ability to dampen mechanical or acoustic vibrations. The addition of ferroelectric ceramic particles may also augment the strength of the matrix, creating a multifunctional composite. In this work, the damping behavior of FR-MMCs created by the addition of barium titanate (BaTiO3) discontinuous reinforcement in a bearing bronze (Cu-10w%Sn) matrix has been studied. It has been shown that even when combined with other traditional composite mechanisms, added damping ability has been achieved due to the ferroelectric nature of the reinforcement. FR-MMCs currently represent a material system capable of exhibiting increased damping ability, as compared to the structural metal matrix alone.
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