depth of friction

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• Friction stir welding — (FSW) is a solid state joining process (meaning the metal is not melted during the process) and is used for applications where the original metal characteristics must remain unchanged as far as possible. This process is primarily used on aluminum …   Wikipedia

• Friction welding — (FW) is a class of solid state welding processes that generates heat through mechanical friction between a moving workpiece and a stationary component, with the addition of a lateral force called upset to plastically displace and fuse the… …   Wikipedia

• self depth adjusting waggler — a float used in angling that automatically sets itself to the correct depth. It has a two point friction device at the float bottom where the line passes through. When cast out with a slack line the float will rise to the surface, the line can… …   Dictionary of ichthyology

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