A method of application of elastic-plastic fracture mechanics to nuclear vessel analysis
Conference
·
· Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States)
OSTI ID:6410099
The primary purpose of this work was to develop analytical relationships which could be used to assess the safety of irradiated nuclear reactor pressure vessels against unstable fracture. The need for such a calculation occurs when the Charpy uppershelf energy of the vessel steel is predicted to fall below the required 50 ft Xlb (67.8 J) level from accumulated neutron radiation damage. The method used was based on ''tearing instability'' concepts under ''J-controlled growth'' conditions for the crack stability criterion. The aforementioned purpose was served by developing fracture mechanics methods of wider applicability than previously available and applying them in analyses at upper-shelf conditions (above the transition temperature). Elastic-plastic fracture mechanics concepts were used to extend recognized linear elastic fracture mechanics flaw analysis equations for through-the-thickness flaws and surface flaws into the plastic range. The approach also made use of J-R curve characterization of the material fracture resistance.
- Research Organization:
- Washington Univ., St. Louis, MO
- OSTI ID:
- 6410099
- Report Number(s):
- CONF-8110313-
- Conference Information:
- Journal Name: Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States) Journal Volume: STP-803
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
220200* -- Nuclear Reactor Technology-- Components & Accessories
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360106 -- Metals & Alloys-- Radiation Effects
CHARPY TEST
CONTAINERS
CRACK PROPAGATION
DAMAGING NEUTRON FLUENCE
DESTRUCTIVE TESTING
DIAGRAMS
ELASTICITY
FRACTURE MECHANICS
FRACTURE PROPERTIES
IMPACT STRENGTH
IMPACT TESTS
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
MECHANICS
NEUTRON FLUENCE
PHYSICAL RADIATION EFFECTS
PLASTICITY
PRESSURE VESSELS
RADIATION EFFECTS
TENSILE PROPERTIES
TESTING
220200* -- Nuclear Reactor Technology-- Components & Accessories
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360106 -- Metals & Alloys-- Radiation Effects
CHARPY TEST
CONTAINERS
CRACK PROPAGATION
DAMAGING NEUTRON FLUENCE
DESTRUCTIVE TESTING
DIAGRAMS
ELASTICITY
FRACTURE MECHANICS
FRACTURE PROPERTIES
IMPACT STRENGTH
IMPACT TESTS
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
MECHANICS
NEUTRON FLUENCE
PHYSICAL RADIATION EFFECTS
PLASTICITY
PRESSURE VESSELS
RADIATION EFFECTS
TENSILE PROPERTIES
TESTING