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 438
... crack tip line compared to those with straight ones did not show remarkable differences in CTOD values . CTOD specimens from overmatched weld joints were fatigue precracked in accordance with ESIS requirements ( 8 ) . Because of use of ...
... crack tip line compared to those with straight ones did not show remarkable differences in CTOD values . CTOD specimens from overmatched weld joints were fatigue precracked in accordance with ESIS requirements ( 8 ) . Because of use of ...
Page 538
... tip can be nu- merically determined from the nodal displacements along the crack front . There are several ... crack plane , the SIF relating to mode I can be appro- ximated by ( ANSYS , 1992 ) K1 = √2π Κι 2G v 1 + K √r ( 1 ) where v ...
... tip can be nu- merically determined from the nodal displacements along the crack front . There are several ... crack plane , the SIF relating to mode I can be appro- ximated by ( ANSYS , 1992 ) K1 = √2π Κι 2G v 1 + K √r ( 1 ) where v ...
Page 539
... crack appears . For modelling of crack formation a method presented by Wu & Carlsson ( 1984 ) is used . BM 20 45 ° WM y 21 3.5 4 6.51 Thickness : 10 mm 150 crack tip Fig . 2 : Geometry of the cracked specimen ( unit : mm ) 20 20 The ...
... crack appears . For modelling of crack formation a method presented by Wu & Carlsson ( 1984 ) is used . BM 20 45 ° WM y 21 3.5 4 6.51 Thickness : 10 mm 150 crack tip Fig . 2 : Geometry of the cracked specimen ( unit : mm ) 20 20 The ...
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