Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 2American Society of Mechanical Engineers, 2001 - Arctic regions |
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Page 436
... crack initiation , crack propagation and crack detection are updated at each time of inspection and used to derive better estimates of reliability and of the number of repaired elements as a function of time . TIME DEPENDENT CRACK ...
... crack initiation , crack propagation and crack detection are updated at each time of inspection and used to derive better estimates of reliability and of the number of repaired elements as a function of time . TIME DEPENDENT CRACK ...
Page 437
... cracks . The size of a detected crack is measured by a non- destructive method . For welded structures , cracks are generally assumed to be present after fabrication . Fatigue damage is expressed with a fatigue crack size that increases ...
... cracks . The size of a detected crack is measured by a non- destructive method . For welded structures , cracks are generally assumed to be present after fabrication . Fatigue damage is expressed with a fatigue crack size that increases ...
Page 438
... crack size ad , j + 1 = ad , for je [ 0 , n ] , is fixed . Then the time interval between each inspection & j + 1 can be calculated : A , + 1 = 82 [ Ra , | if || R , ( 1 ) ≤ Rmina11 = as } where & j + 1 € [ Amin › Atmax ] . ( 23 ) The ...
... crack size ad , j + 1 = ad , for je [ 0 , n ] , is fixed . Then the time interval between each inspection & j + 1 can be calculated : A , + 1 = 82 [ Ra , | if || R , ( 1 ) ≤ Rmina11 = as } where & j + 1 € [ Amin › Atmax ] . ( 23 ) The ...
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amplitude applied approach Arctic Engineering assessment Bay of Campeche calculated coefficient components Conference on Offshore considered corrosion cost crack growth criteria damage deck defect distribution dynamic effect element equation estimate evaluated evidential reasoning approach factor fatigue Figure FPSO frequency function fuzzy given Guedes Soares hydrostatic test inspection planning installation jack-up linear maintenance marine maximum Mechanics and Arctic method monopod nonlinear North West Shelf obtained Offshore Mechanics offshore structures operations optimal parameters peak pipe pipeline prediction probabilistic probability density probability density function probability of failure procedure random variables reliability analysis reliability index response return period Rio de Janeiro riser risk risk based inspection safety seismic ship significant wave height simulation spectral spectrum statistical steel storm stress structural reliability subsea surface Table temperature theory ultimate strength uncertainty valves velocity water depth Weibull distribution wind