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Failure Assessment Diagrams of Semi-Elliptical Surface Crack with Constraint Effect
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 Title & Authors
Failure Assessment Diagrams of Semi-Elliptical Surface Crack with Constraint Effect
Seo, Heon; Han, Tae-Su; Lee, Hyeong-Il;
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 Abstract
In recent years, the subject of remaining life assessment has drawn considerable attention in the power generation industry. In power generation systems a variety of structural components, such as steam pipes, turbine rotors, and superheater headers, typically operate at high temperatures and high pressures. Thus a life prediction methodology accounting for fracture and rupture is increasingly needed for these components. For accurate failure assessment, in addition to the single parameter such as K or J-integral used in traditional fracture mechanics, the second parameter like T-stress describing the constraint is needed. The most critical defects in such structures are generally found in the form of semi-elliptical surface cracks in the welded piping-joints. In this work, selecting the structures of surface-cracked plate and straight pipe, we first perform line-spring finite element modeling, and accompanying elastic-plastic finite element analyses. We then present a framework for including constraint effects (T-stress effects) in the R6 failure assessment diagram approach for fracture assessment.
 Keywords
Semi-Elliptical Surface Crack;J-Integral;T-Stress;Line-Spring Finite Element;Constraint;Failure Assessment Diagram;Failure Assessment Curve;
 Language
Korean
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 References
1.
Journal of the Mechanics and Physics of Solids, vol.21. pp.263-277

2.
Journal of Applied Mechanics, vol.24. pp.111-114

3.
Journal of the Mechanics and Physics of Solids, vol.22. pp.17-26

4.
Journal of Applied Mechanics, vol.58. pp.104-110

5.
Journal of Applied Mechanics, vol.39. pp.185-194

6.
Journal of Pressure Vessel Technology, vol.103. pp.246-254

7.
Elastic-Plastic Fracture : Second Symposium, Vol. I-Inelastic Crack Analysis, pp.I384-I409

8.
International Journal of Solids and Structures, vol.32. pp.2393-2418

9.
The Surface Crack : Physical Problems and Computational Solutions, pp.171-185

10.
The Line Spring Model for Surface Flaw : An Extension to Mode II and Mode III, pp.Chap. 2-3

11.
ABAQUS User's Manual, Version 5.5,

12.
Journal of the Mechanics and Physics of Solids, vol.8. pp.100-108

13.
Advanced Fracture Mechanics, pp.Chap. 5

14.
Assessment of the Integrity of Structures Containing Cracks,

15.
The Surface Crack : Physical Problems and Computational Solutions, pp.171-185

16.
International Journal of Pressure Vessel and Piping, vol.64. pp.287-298

17.
Fracture Mechanics : Twenty-First Symposium, pp.322-336

18.
Constraint Effects in Fracture, pp.21-40

19.
Journal of Pressure Vessel Technology, vol.104. pp.287-292