Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 9, Part 2American Society of Mechanical Engineers, 1990 - Arctic regions |
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Page 146
... Depth = 300 m Depth = 450 m Depth = To 0.09 0.09 0.09 T 0.58 0.68 0.69 T2 0.01 0.01 0.01 T3 0.14 0.14 0.16 ΤΑ 0.15 0.07 Ts 0.04 0.02 0.04 0.01 600 m Table 2 : a - values for the minimum tension limit state We note that the dominating ...
... Depth = 300 m Depth = 450 m Depth = To 0.09 0.09 0.09 T 0.58 0.68 0.69 T2 0.01 0.01 0.01 T3 0.14 0.14 0.16 ΤΑ 0.15 0.07 Ts 0.04 0.02 0.04 0.01 600 m Table 2 : a - values for the minimum tension limit state We note that the dominating ...
Page 271
... depth in both cases due to the increased crack driving force . LEVEL 2 , CDLBZ gave considerably higher reliability for lower crack depths . A 3 mm deep crack has a reliabi- lity index of 1.14 without constraint correction and 2.93 with ...
... depth in both cases due to the increased crack driving force . LEVEL 2 , CDLBZ gave considerably higher reliability for lower crack depths . A 3 mm deep crack has a reliabi- lity index of 1.14 without constraint correction and 2.93 with ...
Page 274
... DEPTH t , mm 12 0.99 Fig . 5 Empirical and fitted Weibull cumulative probability plots of LBZ CTOD fracture toughness for 2 , 5 and 10 mm crack depths . Fig . 6 Second order reliability indices for X - butt weld subjected to uniform ...
... DEPTH t , mm 12 0.99 Fig . 5 Empirical and fitted Weibull cumulative probability plots of LBZ CTOD fracture toughness for 2 , 5 and 10 mm crack depths . Fig . 6 Second order reliability indices for X - butt weld subjected to uniform ...
Contents
Investigation of the Ergodicity Assumption for Sea States in the Reliability Assessment of Offshore | 1 |
OFFSHORE TECHNOLOGY PART | 19 |
Fatigue Loading | 33 |
Copyright | |
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analysis applied approach approximately assessment assumed average basic calculated coefficient component computed considered constant corresponding cost crack growth curve cycles damage defect density depends depth derived described determined developed deviation distribution drag effects Engineering equation equivalent estimated evaluated example expected extreme factor failure failure probability fatigue Figure force fracture frequency function geometry given important included increase indicated initial inspection integration joints limit linear load Lognormal material maximum mean measured mechanics method normal obtained offshore structures operation parameters performed period platform predicted present pressure probabilistic probability procedure random variable range ratio reference relative reliability represent requirements respectively response risk safety shown shows significant simulation standard statistical storm strength stress structure surface Table tension tether tubular uncertainty variables variation wave wave height weld