Shape Memory Alloy Paper/Fabric Movements

Felt with Embedded SMA Felt with Embedded SMA with Current Applied   photo

This post is an extension of the previous post regarding material experimentation and shape memory alloys on September 17, 2013.  I am working on replicating Jei Qi’s work at the MIT Hi-Low Tech lab.  The above picture depicts the results of applying shape memory alloy onto a felt surface.  A video of the movement is given here:   http://youtu.be/z23Ah9FKpCU.  The felt seems to have some residual plastic deformation after the electrical current is not being send through the SMA.  The third picture is of wool felt which has greater stiffness than the regular felt and was not able to move at all using the SMA.

Paper Folding with SMA

This picture depicts the results of the paper folding with the shape memory material.  A video of the movement is given here:  http://youtu.be/hssL3ho4AZI.  The paper exhibits no plastic deformation because it returns to the original shape completely.  Other notable results are the amount of movement depends on the length of the wire.

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