Probabilistic fracture mechanics
Recent Research Activity of Probabilistic Fracture Mechanics for Nuclear Structural Components in Japan
... Probabilistic Fracture Mechanics (PFM) has become an important tool [1, 2]. The PFM approach is regarded as an appropriate method in rationally evaluating plant life and in risk-based decision making ...
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Probabilistic fracture mechanics: Screening criteria for RTNDT, application of FAVOR code to a German KONVOI plant
... FAVPFM: This is the proper probabilistic fracture mechanics analysis. For all input data gained by measurement (e.g. flaw sizes, chemistry, neutron fluence) possible uncertainties can be addressed. ...
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Sensitivity Analysis of Integrity Parameters in CANDU Pressure Tube using Probabilistic Fracture Mechanics (G147)
... the probabilistic approach is necessary. In this study, probabilistic integrity assessments are carried out considering key factors such as initial hydrogen concentration, defect shape, DHC velocity, and ...
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Integrated Evaluation of Maintenance Optimization for Pipes in Nuclear Power Plants Based on Probabilistic Fracture Mechanics
... of probabilistic fracture mechanics (PFM) and a financial method, risk-benefit analyses were performed for the purpose of optimizing maintenance activities of steam generator (SG) tubes used in ...
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Sensitivity analysis on input parameters of probabilistic fracture mechanics code, pro-loca
... a probabilistic fracture mechanics code, and it is being developed continuously through PARTRIDGE, the international co-operative research program which is derived by ...
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Probabilistic Fracture Mechanics Assessment of BWR Control Rod Drive Penetrations
... The same monte carlo simulation that resulted in the cumulative leak behavior of Figure 3 also predicted that most stub tube cracks grew to more than 40% of the stub tube wall thickness[r] ...
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Probabilistic Fracture Mechanics Based Assessments for Aged Nuclear Structure Components
... In Japan, a research activity on PFM approaches to the integrity studies of nuclear structural components was initiated in 1987 by the LE-PFM subcommittee organize[r] ...
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An Improved Probabilistic Fracture Mechanics Model for Pressurized Thermal Shock
... The updated PFM model (1)utilizes expanded databases for the fracture toughness properties of RPV steels, (2)incorporates statistical representations of the expanded [r] ...
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A Quantitative Method for RI-ISI Assessment
... Altering the in-service inspection program of a NPP presents a problem, however. How to measure and quantify the effect these changes have on the risk? Nuclear regulatory authorities can require evidence that the risk ...
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Safety Margins in Mechanical Integrity Assessments for Passive NPP Components
... brittle fracture (considered as failure) probability assessments have been performed for many years in various ...several probabilistic fracture mechanics computer codes have been developed in ...
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Fracture Mechanics of Fiber Reinforced Concrete: An Overview
... The fracture process zone is assumed to be small compared to the size of the ...the fracture process zone are assumed to increases or to remain constant as the load ...of fracture toughness on the ...
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Effect of Temperature and Time on the Fracture Properties of Heated Concrete
... the fracture toughness of ...the fracture properties of concrete using such large specimens, the effect of their own weight cannot be ...their fracture properties relatively stronger than testing at ...
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INVESTIGATION OF FATIGUE LIFE AND FRACTURE MECHANICS
... The quality of single crystals plays an important role in fatigue life. Single crystals used in this thesis appeared to contain SAGBs that impacted the fracture mechanisms and microstructure. An effort must be ...
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Analysis on Fracture Mechanics of Unstable Rock
... gravity, fracture water pressure and seismic force, constructs a unstable rock mechanics model and it uses a fracture mechanics method to deduce the composite stress intensity factor of the ...
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Mechanical Properties of Electrophoretically Deposited 45S5 Bioglass-Graphene Oxide Composite Coatings
... Bioglass-graphene oxide composites can be served as an appropriate alternative for bone implant applications due to its specific mechanical properties. In this study, the 45S5 bioactive glass (BG) - graphene oxide (GO) ...
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Brittle to quasi-brittle transition and crack initiation precursors in crystals with structural Inhomogeneities
... The model: material disorder, phase-field damage and crystal plasticity In this work, we use a phase field model for a thorough continuum simulation of elasti- city, plasticity and damage in three-dimensional ...
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Combining damage and fracture mechanics to model calving
... damage mechanics to represent both the development from micro-defects in the ice to the development of macro-scale crevasses, and their effects on the viscous behaviour of the ice while keeping a continuum ...
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Fatigue and fracture mechanics analysis of threaded connections
... Heywood' s photoelastic study of fillet stresses in loaded projections [1.8] showed that the stress concentration factor at the thread root was not solely due to the bending of the tooth[r] ...
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Overview of Fracture Mechanics Research Studies in the UK
... shallow crack, or causes a shift towards compression at relatively low crack driving forces where secondary stresses dominate (Figure 9a). On the other hand, there is a significant shift towards tension for the deep ...
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Mechanics of a shear cutting process
... List Figures of 1 1 Shear Angle 2 Three Basic Modes 3 Mechanical tests 4 Sketches of various fracture mechanics specimens used with 5 Sketches of various fracture mechanics specimens use[r] ...
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