Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 14, Part 3American Society of Mechanical Engineers, 1995 - Arctic regions |
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Page 280
... Notch a = B Laser Welds TABLE 2 THREE - POINT BEND SPECIMENS USED IN EXPERIMENTS e . Item Fracture toughness B = 2.5 , 5 mm ↓ em WL es -S = 4W- FIG.1 CONFIGURATION OF 3 - POINT BEND SPECIMEN WITH LASER WELDS . Dimension BxW Distance 8 ...
... Notch a = B Laser Welds TABLE 2 THREE - POINT BEND SPECIMENS USED IN EXPERIMENTS e . Item Fracture toughness B = 2.5 , 5 mm ↓ em WL es -S = 4W- FIG.1 CONFIGURATION OF 3 - POINT BEND SPECIMEN WITH LASER WELDS . Dimension BxW Distance 8 ...
Page 283
... Notch Y S = 800 Homogeneous specimen 8 = 0.03 mm 400 Opening stress , σ ( MPa ) yy 1600 B5W , 2.8 1200 --e 0.2 S - e = = 0.6 S Ae 1.2 S = Homogeneous specimen 800 Notch 400 Z at mid - thickness 8 = 0.03 mm at mid - thickness 0 0 0 0.4 ...
... Notch Y S = 800 Homogeneous specimen 8 = 0.03 mm 400 Opening stress , σ ( MPa ) yy 1600 B5W , 2.8 1200 --e 0.2 S - e = = 0.6 S Ae 1.2 S = Homogeneous specimen 800 Notch 400 Z at mid - thickness 8 = 0.03 mm at mid - thickness 0 0 0 0.4 ...
Page 583
... notch root . According to this approach the fatigue effective notch factor K is identical to the geometrical notch factor Kat a notch modified with respect to the microstructural support of the surrounding material . For structural ...
... notch root . According to this approach the fatigue effective notch factor K is identical to the geometrical notch factor Kat a notch modified with respect to the microstructural support of the surrounding material . For structural ...
Contents
FATIGUE GUIDANCE FOR OFFSHORE STRUCTURES | 1 |
OFFSHORE MECHANICS AND ARCTIC ENGINEERING | 14 |
STRUCTURAL INTEGRITY METHODS FOR WELDED COMPONENTS | 55 |
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analysis applied assessment austenitic axial behaviour bending brace calculated cathodic protection Charpy chord Corrosion Fatigue crack depth crack front crack growth rate crack propagation crack tip CTOD cycles defect deformation developed effect Efthymiou equations evaluation experimental failure fatigue crack growth fatigue guidance fatigue lives fatigue strength fatigue tests Figure finite element finite element analysis fracture mechanics fracture toughness GCHAZ geometry hammer peening high strength steels hydrogen increase Laser welds load material measured method microstructure mismatch mixed mode multiplanar notch offshore structures parameters parametric equations parent plate peening pipe plate thickness predictions Proc procedure region repair residual stress ring-stiffened joints riser S-N curve sea water seawater shown in Fig strain stress concentration stress concentration factor stress intensity factor stress range surface cracks Table tensile test results titanium TMCP tubular joints tested values weld metal weld toe welded joints weldment yield strength