creep strain

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June 25, 2026

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Creep is the slow deformation of a material over time due to prolonged stress. This phenomenon is particularly relevant for metals and is studied through creep tests. In these tests, loads below the fracture point are applied to a material, and the resulting deformation, known as creep strain, is measured over time. The test also records the time it takes for the material to fail under a specific stress, which is plotted as a stress rupture or creep rupture curve. By analyzing the relationship between creep strain and time, engineers can predict how materials will behave under stress for extended periods, which is crucial for designing safe and durable structures and machines.1

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materials testing
Creep test
…a period of time (creep strain) under constant load is measured, usually with an extensometer or strain gauge. In the same test, time to failure is also measured against level of stress; the resulting curve is called stress rupture or creep rupture. Once creep strain versus time is plotted,…
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…a period of time (creep strain) under constant load is measured, usually with an extensometer or strain gauge. In the same test, time to failure is also measured against level of stress; the resulting curve is called stress rupture or creep rupture. Once creep strain versus time is plotted,…
Read More