Abstract:
A panel (1) is described having a layered structure comprising: - a first outer layer (2), - an intermediate layer (3), and - a second outer layer (4). The second outer layer (4) has a buckling stress lower than a buckling stress of the first outer layer (2), and the first outer layer (2) and the second outer layer (4) each have a compression failure stress higher than the buckling stress of the second outer layer (4).
Abstract:
Composite materials that are configurable, their preparation, and their uses are described. A composite article includes a plurality of sheets positioned to interleave and partially overlap with each other and held together by interactions between the plurality of sheets and a compressive force across the plurality of sheets, wherein each of the plurality of sheets is infused with an elastomer and forms at least one smooth surface, wherein each of the plurality of sheets is in close contact with adjacent ones of the plurality of sheets, wherein an overlapping area of the plurality of sheets provides resistance to a shear force applied to the composite article.
Abstract:
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.
Abstract:
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.
Abstract:
The invention provides a fiber-reinforced composite material (10), comprising a bulk portion (12) comprising a bulk matrix with reinforcing fibers embedded therein, and a surface portion (14) comprising a plurality of laminated first layers (20) serving as "expanding layers", which expand and/or delaminate during fire impact. Preferably, the surface portion (14) further comprises a plurality of laminated second layers (22) different from the first layers (20) and serving as "barrier layers", wherein expanding layers (20) and barrier layers (22) can be arrangend in an alternating sequence (20-1, 22-1, 20-2, 22-2). The material (10) according to the invention shows an improved fire resistance in comparison to conventional fiber- reinforced composites.
Abstract:
Described herein are composites reinforced with nanostructures and methods for making the same. In one aspect, the reinforced composites are made by (a) applying nanostructures to a surface of a first article; (b) applying a second article to the surface of the first article comprising the nanostructures; and (c) pressure bonding the first article and second article to produce the reinforced composite, wherein the reinforced composite is not subsequently annealed after step (c). Applications of the reinforced composites are also described as well.
Abstract:
A ballistic composite armor article includes a multi-layer hard armor sheet that has at least first and second unidirectional yarn monolayers. The second unidirectional yarn monolayer is transversely oriented with respect to the first unidirectional yarn monolayer, and there is at least one polymeric binder layer arranged adjacent to and stabilizing at least one of the first and second unidirectional yarn monolayers. The yarns of the first and second unidirectional yarn monolayers include respective fiber bundles that have a lateral spread factor ranging from negative lateral spread to a positive lateral spread of less than 306%.
Abstract:
A ballistic composite armor article includes a multi-layer hard armor sheet that has at least first and second unidirectional yarn monolayers. The second unidirectional yarn monolayer is transversely oriented with respect to the first unidirectional yarn monolayer, and there is at least one polymeric binder layer arranged adjacent to and stabilizing at least one of the first and second unidirectional yarn monolayers. The yarns of the first and second unidirectional yarn monolayers include respective fiber bundles that have a lateral spread factor ranging from negative lateral spread to a positive lateral spread of less than 306%.
Abstract:
A muffler for internal combustion engines including a hollow body having an inlet opening and an outlet opening, an inlet pipe extending into the hollow body through the inlet opening an outlet pipe extending out of the hollow body through the outlet opening, wherein the hollow body is formed by a material comprising a fiber lining and a composite structure, and wherein the fiber lining partially penetrates the composite structure.