Experimental considerations on fabrication of smart actuator for vibration control using Shape Memory Alloy (SMA)

Kaori Yuse, Yoshihiro Kikushima, Ya Xu

Research output: Contribution to journalConference articlepeer-review

6 Citations (Scopus)

Abstract

Despite its great potentials, having a large displacement and force compared to traditional electro-hydraulic servo mechanical actuators or to PZT actuators, there are not so many studies on SMA 'active' actuator. The main reasons are considered as following; (1) SMA has transformation only in one direction, (2) the response is quite slow, and (3) vibration control requires punctual thermo control in real time. In the study at our laboratory, the vibration can be clearly separated into different modes by distributed cluster system. SMA actuators are, then, proposed to use with PZT actuators for control of low and high frequency modes, respectively, to realize all-round actuation. The purpose of this paper is to realize SMA 'active' actuator for low frequency modes. First of all, actuators using SMA wires, partly embedded in CFRP, were fabricated in consideration of SMA/FRP interfacial strength. Their thermo-mechanical behavior had been studied with cooling system. These lightweight actuators were placed on beam structure made of CFRP. Recovery force of beam structure itself was used as reactive force against force generated by SMA. As a result, actuator which is favorable for low frequency vibration modes control, i.e. having a large displacement and a large force, was obtained.

Original languageEnglish
Pages (from-to)382-392
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4697
DOIs
Publication statusPublished - 2002 Jan 1
Externally publishedYes
EventSmart Structures and Materials 2002: Damping and Isolation - San Diego, CA, United States
Duration: 2002 Mar 182002 Mar 20

Keywords

  • Active actuator
  • CFRP
  • Debond stress
  • Interfacial strength
  • Shape Memory Alloy
  • Vibration control

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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