BibTeX
@MISC{Toews_thedevelopment,
author = {Leslie Marilyn Toews},
title = {THE DEVELOPMENT OF A MONOLITHIC SHAPE MEMORY ALLOY ACTUATOR},
year = {}
}
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Abstract
I hereby declare that I am the sole author of this thesis. This is a true copy of the thesis, including any required final revisions, as accepted by my examiners. I understand that my thesis may be made electronically available to the public. ii Shape memory alloys (SMAs) provide exciting opportunities for miniature ac-tuation systems. As SMA actuators are scaled down in size, cooling increases and bandwidth improves. However, the inclusion of a bias element with which to cycle the SMA actuator becomes difficult at very small scales. One technique used to avoid the necessity of having to include a separate bias element is the use of local annealing to fabricate a monolithic device out of nickel titanium (NiTi). The actuator geometry is machined out of a single piece of non-annealed NiTi. After locally annealing a portion of the complete device, that section exhibits the shape memory effect while the remainder acts as structural support and provides the bias force required for cycling.
Keyphrases
monolithic shape memory alloy actuator sma actuator bandwidth improves small scale structural support separate bias element complete device nickel titanium miniature ac-tuation system ii shape memory alloy non-annealed niti shape memory effect required final revision sole author bias force true copy actuator geometry bias element monolithic device single piece
