Wavelength-Selective Shape Memory Alloy for Wireless Microactuation of a Bistable Curved Beam

Wireless and/or sensorless components offer a great potential for friendly integration in mechatronic systems. This paper presents a wireless technique to actuate a bistable curved beam using wavelength-selective shape-memory-alloy (SMA) thin foils. The SMA thin foil is irradiated remotely by contin...

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Bibliographic Details
Published inIEEE transactions on industrial electronics (1982) Vol. 58; no. 12; pp. 5288 - 5295
Main Authors Zaidi, S., Lamarque, F., Favergeon, J., Carton, O., Prelle, C.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.12.2011
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Institute of Electrical and Electronics Engineers
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Summary:Wireless and/or sensorless components offer a great potential for friendly integration in mechatronic systems. This paper presents a wireless technique to actuate a bistable curved beam using wavelength-selective shape-memory-alloy (SMA) thin foils. The SMA thin foil is irradiated remotely by continuous-mode laser diodes of 785 and 658 nm wavelengths. First, a comparison between two numerical thermal models is done. These models obey the same conduction and convection equations but the effect of phase transformation is integrated in two different ways. A good agreement is found between the two simulation results. Then, the force generated by the SMA sample (size: 3 mm × 1 mm × 0.1 mm), during martensite-to-austenite phase transformation, is experimentally measured using a miniature force sensor. The force comes out to be 403 mN with 70 mW laser power. Using this force value, a bistable curved beam is designed and fabricated by rapid prototyping technique. Optical filtering layers, which are responsible for the wavelength-selective response, are directly deposited onto the SMA samples. Finally, two SMA samples are used to switch the curved beam between its two stable positions.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2010.2046609