The investigation of a shape memory alloy micro-damper for MEMS applications

Title
The investigation of a shape memory alloy micro-damper for MEMS applications
Authors
Cho, C.
Keywords
shape memory alloy, pseudoelasticity, micro-damper
Issue Date
2007-09
Publisher
MOLECULAR DIVERSITY PRESERVATION INT
Abstract
Some shape memory alloys like NiTi show noticeable high damping property in pseudoelastic range. Due to its unique characteristics, a NiTi alloy is commonly used for passive damping applications, in which the energy may be dissipated by the conversion from mechanical to thermal energy. This study presents a shape memory alloy based micro-damper, which exploits the pseudoelasticity of NiTi wires for energy dissipation. The mechanical model and functional principle of the micro-damper are explained in detail. Moreover, the mechanical behavior of NiTi wires subjected to various temperatures, strain rates and strain amplitudes is observed. Resulting from those experimental results, the damping properties of the micro-damper involving secant stiffness, energy dissipation and loss factor are analyzed. The result indicates the proposed NiTi based micro-damper exhibits good energy dissipation ability, compared with conventional materials damper.
URI
http://dspace.inha.ac.kr/handle/10505/1824
ISSN
1424-8220
Appears in Collections:
College of Engineering(공과대학) > Mechanical Engineering(기계공학) > Journal Papers, Reports(기계공학 논문, 보고서)
Files in This Item:
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