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CISDOC database

Document ID (ISN)111547
CIS number 11-0249
Year 2008
Convention or series no. RR643
Author(s) Baker M., Stanley I.
Health and Safety Executive
Title Assessing and modelling the uncertainty in fatigue crack growth in structural steels
Bibliographic information HSE Books, P.O. Box 1999, Sudbury, Suffolk CO10 2WA, United Kingdom, 2008. viii, 97p. Illus. 49 ref.
Internet access RR643.pdf [in English]
Abstract The objective of this study was to improve the current methods of reliability assessment for structures, and in particular steel offshore structures approaching the end of their design lives. Work was carried out to investigate the variability in the fatigue crack growth of steels and the way in which the corresponding uncertainties could best be incorporated into the assessment process. This included the fatigue testing of specimens of specific grades of steel with the explicit aim of studying the variability in crack growth under different conditions. Findings are presented. The relatively large uncertainties associated with fatigue crack growth behaviour, even within relatively homogenous sets of specimens, means that the variance in the predicted fatigue life is relatively large. It has been shown, however, that the use of fatigue crack growth rate data from relatively early in the life of a particular structure can significantly reduce this uncertainty and improve the reliability predictions through the process of reliability updating.
Descriptors (primary) United Kingdom; materials testing; safety engineering; offshore oil extraction; metal fatigue; description of technique
Descriptors (secondary) reliability; public OSH institutions; research; report
Document type E - Books, reports, proceedings
Country / State or ProvinceUnited Kingdom
Subject(s) Mines and quarries
Safety organization and training
Broad subject area(s) Fires, explosions and major hazards
Browse category(ies) Major hazards
Petroleum and natural gas industry