摘要:
Multifunctional cellular metals or other materials (102) for structural applications that are capable of recovering their original undeformed shape and thickness after impact or crushing, i.e., self-healing. Alternatively, they may normally be stored or used in their compressed, i.e., crushed, state and deployed when needed to act as energy absorbing structure or packaging, i.e., deployable energy absorber. Additionally, the multifunctional structures may act as an actuator, capable of providing localized or distributed force and displacement, and related methods of using and manufacturing the same. These active cellular metals or other materials (110) are composites consisting of conventional metal/alloy truss structures or other material components and offer high specific strength and stiffness, but which are also deployable energy absorbers or self-healing smart structures.
摘要:
A piston for an internal combustion engine, and particularly, but not exclusively, for a Diesel engine, has in a region thereof reinforcing ceramic fibres, the fibres originally being in the form of an insert for the piston with a relatively high density in the range 10 to 20% of the density of the fibre material. In the fabrication of the piston the insert is infiltrated with molten piston material, the piston being formed by employing a pressure casting technique, such as squeeze casting. The piston material comprises an aluminium alloy with 2.0 to 5.5% by weight copper and with 11.0 to 17.0% by weight silicon, and, preferably, 2.5 to 3.5% by weight copper and 12 to 14% by weight silicon. In the fibre-reinforced region the top ring groove of the piston is provided, and, possibly, the fibre-reinforced piston region provides the peripheral part of the crown surface.
摘要:
A light-weight, high-strength compressor component having at least one fluid delivery feature that is formed via additive manufacturing is provided. The component may have at least one interior region comprising a lattice structure that comprises a plurality of repeating cells. A solid surface is disposed over the lattice structure. The interior region comprising the lattice structure has at least one fluid delivery feature for permitting fluid flow through the body portion of the light-weight, high-strength compressor component. The fluid delivery feature may be a flow channel, a fluid delivery port, a porous fluid delivery feature, or the like that serves to transfer fluids through the component, such as refrigerant and/or lubricant oils. Methods of making such compressor components via additive manufacturing processes are also provided.
摘要:
A vertical axis wind turbine is described. The wind turbine can include a top ring, a middle ring and a lower ring, wherein a plurality of vertical airfoils are disposed between the rings. For example, three vertical airfoils can be attached between the upper ring and the middle ring. In addition, three more vertical airfoils can be attached between the lower ring and the middle ring. When wind contacts the vertically arranged airfoils the rings begin to spin. By connecting the rings to a center pole which spins an alternator, electricity can be generated from wind.
摘要:
A vertical axis wind turbine is described. The wind turbine can include a top ring, a middle ring and a lower ring, wherein a plurality of vertical airfoils are disposed between the rings. For example, three vertical airfoils can be attached between the upper ring and the middle ring. In addition, three more vertical airfoils can be attached between the lower ring and the middle ring. When wind contacts the vertically arranged airfoils the rings begin to spin. By connecting the rings to a center pole which spins an alternator, electricity can be generated from wind.
摘要:
A vertical axis wind turbine is described. The wind turbine can include a top ring, a middle ring and a lower ring, wherein a plurality of vertical airfoils are disposed between the rings. For example, three vertical airfoils can be attached between the upper ring and the middle ring. In addition, three more vertical airfoils can be attached between the lower ring and the middle ring. When wind contacts the vertically arranged airfoils the rings begin to spin. By connecting the rings to a center pole which spins an alternator, electricity can be generated from wind.
摘要:
There is disclosed a novel apparatus for use as a beverage container glass door merchandiser. The apparatus includes an insulated enclosure, the enclosure having an outside and an inside and at least partially defining a drain (84) from the inside to the outside. A Stirling cooler (10) has a hot portion (28) and a cold portion (26). A heat-conducting member (78, 82) is disposed inside the enclosure and is connected in heat exchange relationship to the cold portion (26) of the Stirling cooler (10). The heat-conducting member (78, 82) is also operatively associated with the drain (84) such that condensation on the heat-conducting member (78, 82) can flow out of the enclosure through the drain (84). A method of cooling an insulated enclosure is also disclosed.