A critical comparison between mechanistically based probability and statistically based modeling for materials aging

Probability analyses are increasingly used for reliability and durability assessments in the life-cycle design and management of engineered systems. This paper provides a critical comparison between the mechanistically based probability and statistically based approaches. The crucial differences bet...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2002-01, Vol.323 (1), p.278-284
Main Authors: Harlow, D.Gary, Wei, Robert P
Format: Article
Language:English
Subjects:
Applied sciences
Creep
Creep crack growth
Exact sciences and technology
Life-cycle predictions
Material aging
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Mechanistic modeling
Metals. Metallurgy
Probability
Reliability
Statistical modeling
Variability
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Summary:Probability analyses are increasingly used for reliability and durability assessments in the life-cycle design and management of engineered systems. This paper provides a critical comparison between the mechanistically based probability and statistically based approaches. The crucial differences between the two approaches are highlighted and demonstrated through modeling of the creep crack growth response of a high-strength steel. The impact of these differences on structural reliability and durability analyses for life-cycle design and management is discussed.
ISSN:0921-5093
1873-4936
DOI:10.1016/S0921-5093(01)01370-3