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In materials science, creep (sometimes called cold flow) is the tendency of a solid material to undergo slow deformation while subject to persistent mechanical stresses. It can occur as a result of long-term exposure to high levels of stress that are still below the yield strength of the material.
A comprehensive overview of creep deformation, including the stages and mechanisms of creep, factors that affect creep rate, and design considerations to avoid creep.
Jan 1, 2020 · Definition. The time-dependent plastic flow of materials under the conditions of constant load or stress is commonly called as creep. It takes place under long-term exposure to high levels of stress that are typically below the yield point of the material.
Nov 26, 2020 · Creep deformation is caused by the deviatoric (shape changing) component of the stress state applied to a sample – the von Mises stress. The hydrostatic component has no effect, meaning that during creep deformation occurs at constant volume .
Jan 15, 2024 · Creep is the time-dependent plastic deformation of a metal or material under load. Creep usually occurs at high temperatures but can also occur at room temperature. Good examples are lead or glass.
Creep can be defined as time-dependent deformation at absolute temperatures greater than one half the absolute melting. This relative temperature (. T(abs) T. mp(abs) ) is know as the homologous temperate. Creep is a relative phenomenon which may occur at temperatures not normally considered "high."
Nov 26, 2020 · Understand what is meant by Primary, Secondary and Tertiary Creep. Know how creep curves can be represented by (empirical) constitutive laws, and how the values of parameters in them, such as stress exponents and activation energies, can be obtained from experimental data.
