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Erschienen in:
2017 | OriginalPaper | Buchkapitel
7. Creep Rupture
verfasst von : Joshua Pelleg
Erschienen in: Creep in Ceramics
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Abstract
Creep—a time-dependent deformation—occurs below its yield strength usually at elevated temperatures. Creep terminates in rupture if steps are not taken to bring it to a halt. The purpose of creep rupture tests is to determine the time-to-failure. For such tests higher stresses are applied until the specimen fractures. The objectives of the tests are to determine the minimum creep rate at stage II creep and to evaluate the time at which failure sets in. Such information is essential so that the proper ceramics will be selected to eliminate failure during service and to assess the time period of safe use during high-temperature applications. Creep rupture (failure) is the objective of this chapter.