What Does Creep Test Mean?
A creep test measures the progressive rate of deformation of a given material at high temperatures. It is performed by subjecting a tensile specimen to a constant load at a fixed temperature and recording the corresponding amount of strain.
Corrosionpedia Explains Creep Test
Creep occurs over three main stages: primary, secondary and tertiary. The primary stage occurs at the beginning of the testing period with transient deformation at a varying rate. The secondary stage is the point where deformation becomes more continuous and steady state. The tertiary stage is the point where deformation accelerates and the specimen fractures, ultimately ending the test.
Creep tests help to document various material behaviors when materials are subjected to forces. This ensures the materials are used in a safe and practical manner to prevent material failure.