Piezoelectric ceramic-reinforced metal matrix composites
First Claim
1. A composite material comprising a metal matrix and piezoelectric ceramic particulates dispersed in the metal matrix.
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Accused Products
Abstract
Composite materials comprising piezoelectric ceramic particulates dispersed in a metal matrix are capable of vibration damping. When the piezoelectric ceramic particulates are subjected to strain, such as the strain experienced during vibration of the material, they generate an electrical voltage that is converted into Joule heat in the surrounding metal matrix, thereby dissipating the vibrational energy. The piezoelectric ceramic particulates may also act as reinforcements to improve the mechanical properties of the composites. The composite materials may be used in various structural components in vehicles, aircraft, spacecraft, buildings and tools.
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Citations
28 Claims
- 1. A composite material comprising a metal matrix and piezoelectric ceramic particulates dispersed in the metal matrix.
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26. A vibration damping structural component comprising a composite material including a metal matrix and piezoelectric ceramic particulates dispersed in the metal matrix.
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27. A method of making a vibration damping composite material comprising dispersing piezoelectric ceramic particulates in a metal matrix.
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28. A method of damping vibrations in a structural component comprising forming at least a part of the structural component from a composite material comprising a metal matrix and piezoelectric ceramic particulates in the metal matrix.
Specification