Vibration leads to failure when the " forcing frequency " of the machine's operation hits a resonant frequency of one or more moving parts, such as rotating shafts.
32.
The vertically acting sear acted on a piece called the tumbler, on the inside of the lock which was mounted on the same rotating shaft as the cock.
33.
While each pipe is being tested, one end is securely fixed and the other rests on a rotating shaft, the motion of which is indicated with a pointer.
34.
Currently a jet engine's rotor system-- which consists of blades attached to a central rotating shaft-- can be monitored by a magnetic sensor the size of a writing pen.
35.
Labyrinth seals are also found on pistons, which use them to store oil and seal against high pressure during compression and power strokes, as well as on other non-rotating shafts.
36.
Sufficient oil pressure ensures that the metal of the rotating shaft ( journal ) and the bearing shell can never touch, and wear is therefore confined to initial start-up and shutdown.
37.
This is the reason why any engine outputting its power on a rotating shaft is usually quoted, along with its rated power, the rotational speed at which that rated power is developed.
38.
The " teeth " of the labyrinth seal may be on the rotating shaft ( Teeth On Rotor-TOR ) or on the stator ( TOS ), or both, in an interlocking configuration.
39.
Labyrinth seals on rotating shafts provide non-contact sealing action by controlling the passage of fluid through a variety of chambers by centrifugal motion, as well as by the formation of controlled fluid vortices.
40.
The powered rotors of a tiltrotor ( sometimes called " proprotor " ) are mounted on rotating shafts or nacelles at the end of a fixed wing, and used for both lift and propulsion.
