Residual stress effects in LMFBR fracture assessment procedures

Conference · Fri Jun 01 04:00:00 EDT 1984 · Am. Soc. Mech. Eng., (Pap.); (United States)

OSTI ID:6279897

Hooton, D G

Two post-yield fracture mechanics methods, which have been developed into fully detailed failure assessment procedures for ferritic structures, have been reviewed from the point of view of the manner in which as-welded residual stress effects are incorporated, and comparisons then made with finite element and theoretical models of centre-cracked plates containing residual/thermal stresses in the form of crack-driving force curves. Applying the procedures to austenitic structures, comparisons are made in terms of failure assessment curves and it is recommended that the preferred method for the prediction of critical crack sizes in LMFBR austenitic structures containing as-welded residual stresses is the CEGB-R6 procedure based on a flow stress defined at 3% strain in the parent plate. When the prediction of failure loads in such structures is required, it is suggested that the CEGB-R6 procedure be used with residual/thermal stresses factored to give a maximum total stress of flow stress magnitude.

• Research Organization: National Nuclear Corporation Ltd., Risley, Cheshire
• OSTI ID: 6279897
• Report Number(s): CONF-840647-
• Conference Information: Journal Name: Am. Soc. Mech. Eng., (Pap.); (United States) Journal Volume: 84-PVP-21
• Country of Publication: United States
• Language: English

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ALLOYS
AUSTENITIC STEELS
BREEDER REACTORS
CRACK PROPAGATION
DIAGRAMS
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
FINITE ELEMENT METHOD
FRACTURE MECHANICS
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
MECHANICS
NUMERICAL SOLUTION
PLATES
REACTORS
RESIDUAL STRESSES
STEELS
STRAINS
STRESSES
THERMAL STRESSES
WELDED JOINTS