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Definition
| movement of dislocation perpendicular to slip plane by diffusion of atoms to or from the dislocation line |
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| a time dependent, permanent deformation at high temperatures, occurring at constant load or constant stress |
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| an older concept that defines a stress below which a material will not fail in a fatigue test, factors such as corrosion or occasional overloading can cause a material to fail at stresses below this value |
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| the number of cycles permitted at a particular stress before a material fails by fatigue |
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| the resistance of a material to failure in the presence of a flaw |
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Definition
| a process in which metal spheres are shot at the component which leads to residual compressive stresses at the surface of the component to help improve the fatigue life |
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| patterns seen on a fractured surface of a fatigued sample, much finer scale than beach marks and show position of the crack tip after each cycle |
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Definition
| a qualitative measure of the energy required to cause fracture of a material, can be measured from an impact test or as the area under the true stress-strain curve |
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