Part comprising a structure and a shape memory alloy element
AssigneeSnecma
InventorsAdrien Fabre, Pierrick Jean, Jean-Pierre Lombard
Life of this patent
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Abstract
A part includes a structure and at least one shape memory alloy element that is prestressed and embedded at least in part within said structure. The shape memory alloy is suitable for dissipating the mechanical energy of said structure when it vibrates in a given frequency band.
Claims16
1-16. (canceled)
A part, comprising:
- a structure and at least one shape memory alloy element that is prestressed and embedded at least in part within said structure, said shape memory alloy being suitable for dissipating the mechanical energy of said structure when it vibrates in a given frequency band.
A fabrication method for fabricating a composite material structure with at least one shape memory alloy element within it, said structure being made up of a plurality of sub-structures, said method comprising:
- providing a plurality of sub-structures;
- applying prestress to said shape memory alloy element;
- placing said at least one shape memory alloy element on one of said sub-structures;
- covering said at least one shape memory alloy element at least in part by another one of said sub-structures;
- fastening together said shape memory alloy element and said structure, said sub-structures being selected from a group comprising a laminate of unidirectional plies, a woven composite, a braided composite, a uniform material, a film type covering, and a layer-of-paint type covering;
- and
- releasing said prestress.
A fabrication method for fabricating a fiber structure with at least one shape memory alloy element within it, the method comprising:
- providing a preform of woven or braided fibers;
- applying prestress to said shape memory alloy element;
- inserting said at least one shape memory alloy element within said preform;
- densifying said preform and said at least one shape memory alloy element;
- and
- releasing said prestress.
Dependencies are inferred from the claim text.