A comparative study of the probabilistic fracture mechanics and the stochastic Markovian process approaches for structural reliability assessment

The two computer codes COVASTOL and RELIEF, developed for the modeling of cumulative damage processes in the framework of probabilistic structural reliability, are compared. They are based respectively on the randomization of a differential crack growth law and on the theory of discrete Markov proce...

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Bibliographic Details
Published in:The International journal of pressure vessels and piping 1990, Vol.41 (1), p.25-41
Main Authors: Stavrakakis, G., Lucia, A.C., Solomos, G.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Mechanical engineering. Machine design
Steel design
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Summary:The two computer codes COVASTOL and RELIEF, developed for the modeling of cumulative damage processes in the framework of probabilistic structural reliability, are compared. They are based respectively on the randomization of a differential crack growth law and on the theory of discrete Markov processes. The codes are applied for fatigue crack growth predictions using two sets of data of crack propagation curves from specimens. The results are critically analyzed and an extensive discussion follows on the merits and limitations of each code. Their transferability for the reliability assessment of real structures is investigated.
ISSN:0308-0161
1879-3541
DOI:10.1016/0308-0161(90)90075-S