When a solid material (solid materials) were applied force or load (load) to stress (stress) within the material, causing the deformation. (Deformation) under constant load or stress. Deformation occurs continuously phenomenon is called creep (creep) creep behavior of the material depends on variables including stress, temperature and time on testing a material constant load (constant load creep) or receive. Stress static (constant stress creep) deformation occurring all (overall deformation, ε) of the material can be written as Equation 1.
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