Creep that occurs under conditions of fluctuating load or fluctuating temperatures.


Related Terms

PNEUMATIC WEIGHING SYSTEM

A system for weight measurement in which the load is detected by a nozzle and balanced by modulating the air pressure in an opposing capsule.

PLANT FACTOR

The ratio of the average power load of an electric power plant to its rated capacity. Also known as capacity factor.

PENDULUM SCALE

Weight-measurement device in which the load is balanced by the movement of one or more pendulums from vertical (zero weight) to horizontal (maximum weight).

PEDESTAL

1. The support for a column. 2. A metal support carrying one end of a bridge truss or girder and transmitting any load to the top of a pier or abutment. 3. See blanking level. 4. A supporting part or the base of an upright structure, such as a radar antenna.

PEAK LOAD

1. The maximum instantaneous load or the maximum average load over a designated interval of time. Also known as peak power. 2. The maximum quantity of a specified material to be carried by a conveyor per minute in a specified period of time.

MODULUS OF RUPTURE IN TORSION

The maximum stress per unit area that a specimen can withstand without breaking when its ends are twisted, as calculated from the breaking load under the assumption that the specimen is elastic until rupture takes place.

MOBILITY

The ability of an analytical balance to react to small load changes; affected by friction and degree of looseness in the balance components.

MISMATCH

The condition in which the impedance of a source does not match or equal the impedance of the connected load or transmission line.

MECHANICAL SHOVEL

A loader limited to level or slightly graded drivages; when full, the shovel is swung over the machine, and the load is discharged into containers or vehicles behind.

MAXWELL'S THEOREM

If a load applied at one point A of an elastic structure results in a given deflection at another point B, then the same load applied at B will result in the same deflection at A.

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