89 research outputs found
The analysis of mode 1 in-plane toughness data for mild steel plate and weld metal relevant to Magnox reactor pressure circuits
No full textSIGLEAvailable from British Library Document Supply Centre- DSC:3106.052(OED/STB(S)--88/0020/R) / BLDSC - British Library Document Supply CentreGBUnited Kingdo
Application of the competing risks analysis to fracture toughness of silicon‐killed C‐Mn plate steels
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Mechanical properties of precipitation-strengthened Ni-Al-Cr alloy based on an NiAl intermetallic compound
No full textAnalysis of Fracture Toughness Data for Pressurised Water Reactor Pressure Vessels Obtained in the Ductile to Brittle Transition Region
No full text
An overview of the principles of modeling Charpy impact energy data using statistical analyses
No full textContribution of multiscale materials modelling for underwriting nuclear pressure vessel integrity
No full textThe continued safe operation of high integrity structures such as Magnox steel reactor pressure vessels is assured by using arguments which are usually based upon deterministic methodologies. These require models to provide the input parameters together with the necessary mechanistic understanding of the changes in mechanical or physical properties of the steels with service life. The use of modelling to provide key parameters for input to the fracture mechanics assessments is discussed, in particular, the application of statistical procedures to describe the required material's mechanical property data. However, there is a need to underwrite these data with an understanding of the underlying physical mechanisms. Here mechanistic models have been derived which span many orders of magnitude of length scale. At the atomic scale these provide an insight into the production of point defect damage in steels as a result of exposure to a neutron spectrum at various temperature and neutron doses. In addition, equilibrium and nonequilibrium segregation of alloying and impurity atom species to grain boundaries is modelled. Both are necessary for understanding the changes in the fracture mode and the mechanical properties for these steels after extended periods of service mode. At the microscale, models are adopted to develop insights into the fracture processes. The benefits of these models to the arguments developed within safety cases which underwrite safe continued operation of these reactor pressure vessels are described.The continued safe operation of high integrity structures such as Magnox steel reactor pressure vessels is assured by using arguments which are usually based upon deterministic methodologies. These require models to provide the input parameters together with the necessary mechanistic understanding of the changes in mechanical or physical properties of the steels with service life. The use of modelling to provide key parameters for input to the fracture mechanics assessments is discussed, in particular, the application of statistical procedures to describe the required material's mechanical property data. However, there is a need to underwrite these data with an understanding of the underlying physical mechanisms. Here mechanistic models have been derived which span many orders of magnitude of length scale. At the atomic scale these provide an insight into the production of point defect damage in steels as a result of exposure to a neutron spectrum at various temperature and neutron doses. In addition, equilibrium and nonequilibrium segregation of alloying and impurity atom species to grain boundaries is modelled. Both are necessary for understanding the changes in the fracture mode and the mechanical properties for these steels after extended periods of service mode. At the microscale, models are adopted to develop insights into the fracture processes. The benefits of these models to the arguments developed within safety cases which underwrite safe continued operation of these reactor pressure vessels are described
Estimation of Lower Bound Engineering Fracture Toughness in the Ductile to Brittle Transition Regime
No full textSuggested procedures for the analysis of multi-specimen fracture toughness data
No full textSIGLEAvailable from British Library Document Supply Centre- DSC:3106.1229(SER/SSD--86/0056/N) / BLDSC - British Library Document Supply CentreGBUnited Kingdo
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