摘要:
Described is a micro-lattice damping material and a method for repeatable energy absorption. The micro-lattice damping material is a cel lular material formed of a ihree-dim.ensio.aal interconnected network of hollow tubes. This material is operable to provide high damping, specifically acoustic, vibration or shock damping, by utilizing the energy absorption mechanism of hollow mbe buckling, which is rendered repeatable by the micro-lattice architecture.
摘要:
The present invention relates to a micro-lattice and, more particularly, to an ultralight micro-lattice and a method for forming the same. The micro is a cellular material, formed of interconnected hollow tubes. The cellular material has a relative density in range of 0.001% to 0.3%, and a desnity of 0.9% mg/cc has been demonstrated. The cellular material also has the ability to recover from a deformation exceeding 50% strain.
摘要:
A thermal and environmental barrier coating composed of ceramic hollow microspheres sintered together. In one embodiment the microspheres are sintered together with a powder of another material that acts as a binder, or with a powder of a material that may be the same as the material of the hollow microspheres, forming a matrix in which the hollow microspheres are embedded. The hollow microspheres may be composed of a material with a high temperature capability, and with a low coefficient of thermal expansion.
摘要:
Composite materials with high damping and high stiffness at relatively low density. These materials include three-dimensional structures of interconnected ligaments, which have multiple concentric layers alternating between stiff constraining layers and soft damping layers, so that bulk deformation of the structure results in high local shear strain and correspondingly high bulk damping.
摘要:
A three-dimensional lattice architecture with a thickness hierarchy includes a first surface and a second surface separated from each other with a distance therebetween defining a thickness of the three-dimensional lattice architecture; a plurality of angled struts extending along a plurality of directions between the first surface and the second surface; a plurality of nodes connecting the plurality of angled struts with one another forming a plurality of unit cells. At least a portion of the plurality of angled struts are internally terminated along the thickness direction of the lattice structure and providing a plurality of internal degrees of freedom towards the first or second surface of the lattice architecture.
摘要:
A curved, three-dimensional, ordered micro-truss structure comprising: a plurality of first struts extending along a first direction; a plurality of second struts extending along a second direction; and a plurality of third struts extending along a third direction, wherein the first, second, and third struts interpenetrate one another at a plurality of nodes, wherein the pluralities of first struts, second struts, third struts, and nodes form a plurality of ordered unit cells within the micro-truss structure, and wherein the plurality of ordered unit cells define a curved surface.