Methodology of Including Spatial Nonuniformity of Material Properties in the Brittle Fracture Resistance Calculation for WWER-1000 Reactor Pressure Vessels. Part 1. Theoretical Analysis

The paper addresses the main methods of predicting the temperature dependence of fracture toughness. The authors have analyzed a system of margins which have to be introduced in order to adequately and conservatively predict this dependence using the results of testing surveillance coupons. A method...

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Bibliographic Details
Published in:Strength of materials 2015-05, Vol.47 (3), p.385-399
Main Authors: Margolin, B. Z., Fomenko, V. N., Vakulenko, A. A., Piminov, V. A., Chernobaeva, A. A.
Format: Article
Language:English
Subjects:
Brittle fracture
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Materials Science
Mathematical analysis
Methodology
Nonuniformity
Pressure vessels
Reactors
Solid Mechanics
Surveillance
Temperature dependence
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Summary:The paper addresses the main methods of predicting the temperature dependence of fracture toughness. The authors have analyzed a system of margins which have to be introduced in order to adequately and conservatively predict this dependence using the results of testing surveillance coupons. A methodology is put forward for determining a margin for spatial nonuniformity of properties of the reactor pressure vessel material, which is based on simultaneous deterministic and probabilistic calculations of brittle fracture resistance of a reactor pressure vessel.
ISSN:0039-2316
1573-9325
DOI:10.1007/s11223-015-9669-4