Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 3American Society of Mechanical Engineers, 2001 - Arctic regions |
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Page 86
Moreover , this criterion to assess the ductile crack initiation of steel structures is generally confirmed especially in the case that the ductile crack initiates in the center of a round bar tension specimen with circumferential notch ...
Moreover , this criterion to assess the ductile crack initiation of steel structures is generally confirmed especially in the case that the ductile crack initiates in the center of a round bar tension specimen with circumferential notch ...
Page 89
... crack from specimen center . Fig . 8 Effect of degree of prestrain and its. True strain at crack initiation ( e ave . ) , = In ( A / A1 ) ( % ) 120 Virgin steel 100 ( SM490YB ) 80 60 40 20 0 ( crack length = 0.05mm ) Ductile crack ...
... crack from specimen center . Fig . 8 Effect of degree of prestrain and its. True strain at crack initiation ( e ave . ) , = In ( A / A1 ) ( % ) 120 Virgin steel 100 ( SM490YB ) 80 60 40 20 0 ( crack length = 0.05mm ) Ductile crack ...
Page 90
... initiate ductile crack from specimen surface . Fig . 13 Schematic illustration of proposed criterion and approach. True strain at crack initiation , ( eave . ) In ( Ao / A1 ) ( % ) Ductile crack ( Observed crack length ) O No ductile crack ...
... initiate ductile crack from specimen surface . Fig . 13 Schematic illustration of proposed criterion and approach. True strain at crack initiation , ( eave . ) In ( Ao / A1 ) ( % ) Ductile crack ( Observed crack length ) O No ductile crack ...
Contents
Fatigue Capacity | 1 |
OMAE2001MAT3011 | 11 |
OMAE2001MAT3013 | 17 |
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analysis applied Arctic Engineering assessment axial base metal bending brittle buckling calculated CGHAZ Charpy impact Charpy impact test components compressive Conference on Offshore crack arrest crack growth criterion CTOD test cycle defined deformation developed discrete displacement distribution DQEM ductile crack initiation dynamic effect elastic equation evaluated failure fatigue cracks ferrite Figure finite element flexible pipe FPSO Fracture Mechanics fracture toughness function fusion line hot spot hull indentation linepipe loading material maximum mechanical properties Mechanics and Arctic method microstructure node notch obtained Offshore Mechanics offshore structures parameters performed pipeline predicted pressure region Rio de Janeiro riser S-N curves shown in Fig shows simulated specimens steel plates stress concentration stress intensity factor surface cracks surface layer Table temperature tensile strength thermal thickness underwater underwater welding virgin steel Weibull distribution weld metal weld toe welded joints weldment yield strength