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In the secondary, or steady-state, creep, dislocation structure and grain size have reached equilibrium, and therefore strain rate is constant. Equations that yield a strain rate refer to the steady-state strain rate. Stress dependence of this rate depends on the creep mechanism. In tertiary creep, the strain rate exponentially increases with ...
The first two in the sequence are by far the most common; 'tertiary' appears occasionally, and higher numbers are rare except in specialized contexts ('quaternary period'). The Greek series proto- , deutero- , trito- , ... is only found in prefixes, generally scholarly and technical coinages, e.g. protagonist, deuteragonist, tritagonist ...
Some materials have a very small secondary creep state and may go straight from the primary creep to the tertiary creep state. This is dependent on the properties of the material that is being tested. This is important to note because going straight to the tertiary state causes the material to break faster from its form. [6]
Creep behavior can be described in three stages: primary, secondary, and tertiary creep. When modeling solder, secondary creep, also called steady state creep (constant strain rate), is often the region of interest for describing solder behavior in electronics. Some models also incorporate primary creep.
• The creep resistance of hard and brittle materials was significantly influenced by small amounts of strain, although visible creep cavities or cracks were not observed. • Laboratory-damaged or ex-service materials showed negligible primary or secondary creep during subsequent testing.
It's hard to believe one of Sex and the City's most shocking deaths is old enough to order itself a Cosmopolitan.. In a show full of unforgettable moments, season 6's episode 18, aptly titled ...
Educational stages are subdivisions of formal learning, typically covering early childhood education, primary education, secondary education and tertiary education.The United Nations Educational, Scientific and Cultural Organization recognizes nine levels of education in its International Standard Classification of Education (ISCED) system (from Level 0 (pre-primary education) through Level 8 ...
The classification of primary, secondary, and tertiary sources can be different in various disciplines and may depend on the context in which the source is used. The examples and definitions given in these guidelines are provided as an aid for more informed discussion of these classification issues when they come up.