A lengthening of a shaft. It could be caused by thermal changes in environment or induced through the use of a sliding coupling.


Related Terms

POPPET

1. One of the timber and steel structures supporting the fore and aft ends of a ship for launching from sliding ways. 2. A spring-loaded ball engaging a notch; a ball latch.

PHONON FRICTION

Friction that arises when atoms close to a surface are set into motion by the sliding action of atoms in an opposing surface, and the mechanical energy needed to slide one surface over the other is thereby converted to the energy of atomic lattice vibrations (phonons) and is eventually transformed into heat.

PAIR

1. Two like conductors employed to form an electric circuit. 2. Two parts in a kinematic mechanism that mutually constrain relative motion; for example, a sliding pair composed of a piston and cylinder.

LOADING TRAY

A tray with a sliding bottom used to simultaneously load the plastic charge into the cavities of a multicavity mold.

LEAF

1. A separately movable division of a folding or sliding door. 2. One of a pair of doors or windows. 3. One of the two halves of a cavity wall.

LAUNCHING CRADLE

A framework made of wood to support a vessel during launching from sliding ways.

KINETIC FRICTION

The friction between two surfaces which are sliding over each other.

JOURNAL FRICTION

Friction of the axle in a journal bearing arising mainly from viscous sliding friction between journal and lubricant.

INTERNAL DIFFUSION

The diffusion of liquid or gaseous reactants to the innermost pore depths of an adsorbent-base catalyst, necsubjected to fluctuating stress. 2. In a powder, the friction that is developed by the particles sliding over each other; it is greater than the friction of the mass of solid that comprises the individual particles.

ADHESIVE WEAR

Often referred to as galling, scuffing, scoring, or seizing. It happens when sliding surfaces contact one another, causing fragments to be pulled from one surface and to adhere to the other.

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