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Creep (deformation): Quiz


Question 1: At high stresses (relative to the shear modulus), creep is controlled by the movement of ________.
DislocationCrystal structureMetalMaterials science

Question 2: Plastics and low-melting-temperature metals, including many solders, creep at room temperature as can be seen markedly in old ________ hot-water pipes.

Question 3: It occurs as a result of long term exposure to levels of stress that are below the ________ of the material.
Tensile strengthYield (engineering)CorrosionCreep (deformation)

Question 4: For example, ________ requires a temperature in the thousands of degrees before creep deformation can occur while ice formations will creep in freezing temperatures.

Question 5: The rate of this deformation is a function of the material properties, exposure time, exposure ________ and the applied structural load.
TemperatureThermodynamic temperatureLightningWater vapor

Question 6: Creep is more severe in materials that are subjected to ________ for long periods, and near the melting point.
EnergyTemperatureHeatInternal energy

Question 7: [1] As a rule of thumb, the effects of creep deformation generally become noticeable at approximately 30% of the melting point for metals and 40–50% of melting point for ________.
SolidCeramicCeramic engineeringCeramic materials

Question 8: Aging ________ windows are often erroneously used as an example of this phenomenon: measurable creep would only occur at temperatures above the glass transition temperature around 500 °C (900 °F).
MACORCranberry glassBorosilicate glassGlass

Question 9: Creep is usually of concern to ________ and metallurgists when evaluating components that operate under high stresses or high temperatures.
EngineeringCivil engineeringElectrical engineeringMechanical engineering

Question 10: Creep deformation is important not only in systems where high temperatures are endured such as nuclear power plants, jet engines and ________, but also in the design of many everyday objects.
Shell and tube heat exchangerWaterHeat exchangerFouling


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