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Vibration damping and heat transfer using material phase changesA method and apparatus wherein phase changes in a material can dampen vibrational energy, dampen noise and facilitate heat transfer. One embodiment includes a method for damping vibrational energy in a body. The method comprises attaching a material to the body, wherein the material comprises a substrate, a shape memory alloy layer, and a plurality of temperature change elements. The method further comprises sensing vibrations in the body. In addition, the method comprises indicating to at least a portion of the temperature change elements to provide a temperature change in the shape memory alloy layer, wherein the temperature change is sufficient to provide a phase change in at least a portion of the shape memory alloy layer, and further wherein the phase change consumes a sufficient amount of kinetic energy to dampen at least a portion of the vibrational energy in the body. In other embodiments, the shape memory alloy layer is a thin film. Additional embodiments include a sensor connected to the material.
Document ID
20090043098
Acquisition Source
Goddard Space Flight Center
Document Type
Other - Patent
Authors
Kloucek, Petr
Reynolds, Daniel R.
Date Acquired
August 24, 2013
Publication Date
March 24, 2009
Subject Category
Mechanical Engineering
Funding Number(s)
CONTRACT_GRANT: NAG5-8136
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-7,506,735
Patent Application
US-Patent-Appl-SN-10/866,973

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