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RISValidation of Creep Crack Growth Life Estimation Methodology/Hot Reheat Steam Pipes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper documents a validation study of a creep crack growth life estimation methodology developed by Riedel and Rice, Saxena, and Bassani which has been implemented into a Babcock & ...
Technical Basis for the Extension of ASME Code Case N-494 for Assessment of Austenitic Piping
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In 1990, the ASME Boiler and Pressure Vessel Code for Nuclear Components approved Code Case N-494 as an alternative procedure for evaluating flaws in light water reactor (LWR) ferritic piping. ...
Single-Edge Crack in Rectangular Sheet Subjected to End Rotations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Stress-intensity factors for single-edge cracks in rectangular sheets subjected to end rotations about the center line of the rectangle are investigated. The problem of the distribution of stress ...
The Effect of a Riveted Stringer on the Stress in a Sheet With a Circular Cutout
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A theoretical investigation was made into the effect of a rivet-attached stringer on the stress concentrations in a thin elastic sheet with a circular cutout. The sheet and stringer are loaded ...
A Procedure for the Assessment of the Structural Integrity of Nuclear Pressure Vessels
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a simple engineering procedure that the utility industry can use to assess the integrity of typical nuclear-grade pressure vessels. The procedure recognizes both brittle ...
Extensions of the Failure Assessment Diagram Approach Semi-Elliptical Flaw in Pressurized Cylinder
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A simple, viable engineering method for assessing the integrity of nuclear pressure vessels has been developed at Babcock & Wilcox. The method uses results given in a plastic fracture ...
Extensions of the Failure Assessment Diagram Approach Semi-Elliptical Flaw in Pressurized Cylinders—Part II
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Approximate closed-form J -integral expressions based on the estimation scheme for use in the Deformation Plasticity Failure Assessment Diagram (DPFAD) approach are presented for an axially oriented ...
An Approach to Account for Negative R-Ratio Effects in Fatigue Crack Growth Calculations for Pressure Vessels Based on Crack Closure Concepts
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Current fatigue crack growth procedures in the commercial nuclear industry do not clearly specify how compressive loads are to be handled and, therefore, regulatory agencies usually recommend a ...
Deformation Plasticity Failure Assessment Diagram (DPFAD) for Materials With Non-Ramberg-Osgood Stress-Strain Curves
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a brief history of the evolution of the Central Electricity Generating Board’s (CEGB) R-6 failure assessment diagram (FAD) procedure used in assessing defects in structural ...
An Analytical Assessment of the Effects of Residual Stresses and Fracture Properties on Service Performance of Various Weld Repair Processes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper discusses analytical work done to assess the relative importance of residual stresses and fracture mechanics material properties on the service performance of various weld repair ...