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They are used in pontoon bridges, floating piers, and floats anchored to the seabed for recreation or dockage. They are also used in shipbuilding and marine salvage, often deployed uninflated then pressurized to raise a sunken object. In military, floats are used as pontoon bridges or transportation platforms for heavier vehicles or machinery.
[24] [30] Such an outrigger pair is often homemade of a small plank and found floats such as empty bottles or plastic ducks. [31] Outriggers are also made commercially, especially for fishing kayaks and sailing. If the floats are set so that they are both in the water, they give primary stability, but produce more drag. If they are set so that ...
Although it is a closed-cell foam, both expanded and extruded polystyrene are not entirely waterproof or vapor proof. [58] In expanded polystyrene there are interstitial gaps between the expanded closed-cell pellets that form an open network of channels between the bonded pellets, and this network of gaps can become filled with liquid water.
Open-cell metal foam CFD (numerical) simulation of fluid flow and heat transfer on an open cell metal foam. Open-celled metal foam, also called metal sponge, [3] can be used in heat exchangers (compact electronics cooling, cryogen tanks, PCM heat exchangers), energy absorption, flow diffusion, CO 2 scrubbers, flame arrestors, and lightweight optics. [4]
Ex-situ bonding is achieved by gluing face sheets with an aluminium foam by adhesive bonding, brazing or diffusion bonding. Foams used in this method are either closed-cell or open-cell. When a closed-cell foam is used then it is produced from aluminium alloys either by liquid metal route (e.g. Alporas, [3] Cymat [4]) or by powder metallurgy [2 ...
This is a permanent fixture within the dock, like a hinged dock gate, and moves upon a fixed track. The sides of the caisson are vertical, making a narrow rectangular box. Water ballast is used to control its buoyancy, as for the ship caisson, but the floating caisson is then hauled sideways into a recess built into the side of the dock wall.
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