Magnetorheological nanocomposite elastomer for releasable attachment applications
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United States of America Patent
Stats
-
Oct 7, 2008
Grant Date -
Aug 3, 2006
app pub date -
Mar 30, 2006
filing date -
Oct 19, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A releasable fastener system comprises a loop portion and a hook portion. The loop portion includes a support and a loop material disposed on one side thereof whereas the hook portion includes a support and a plurality of closely spaced upstanding hook elements extending from one side thereof. When the hook portion and loop portion are pressed together they interlock to form a releasable engagement. The resulting joint created by the engagement is relatively resistant to shear and pull forces and weak in peel strength forces. The hook elements are formed of a magnetorheological elastomer that provides a change in shape orientation and/or flexural modulus of the hook elements. In this manner, the shape orientation and/or flexural modulus of the hook elements can be remotely changed to provide a reduction or magnification in the shear and/or pull-off forces in addition to providing variable damping capabilities to the fastener system.
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