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RISDevelopment of Stress Intensity Factors for Cracks With Large Aspect Ratios in Pipes and Plates
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The stress intensity factors (SIFs) for pipes containing semi-elliptical surface cracks with large aspect ratios were calculated by finite-element analysis (FEA). The cracks were circumferential and axial surface cracks ...
Study on Flaw to Surface Proximity Rule for Transforming Subsurface Flaws to Surface Flaws Based on Fatigue Crack Growth Experiments
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: If a subsurface flaw is located very near a component surface, the subsurface flaw is categorized as a surface flaw. The boundary of the subsurface and surface flaws is required for flaw evaluation. The subsurface flaw is ...
Plastic Collapse Moment for Weld Overlay Pipe With Multiple Circumferential Flaws
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Weld overlay is one of the useful repair methods for cracked piping that has been successfully applied for piping in many nuclear power plants. This paper proposes an approach for predicting plastic collapse moment for ...
Failure Experiments on Pipes With Local Wall Thinning Subjected to Multi-Axial Loads
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Piping lines in nuclear power plants may experience multi-axial loads including tensile force, bending, and torsion moments during operation. There is a lack of guidance for failure evaluation of locally wall-thinned pipes ...
Weight Function Method With Segment Wise Polynomial Interpolation to Calculate Stress Intensity Factors for Complicated Stress Distributions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Many solutions of the stress intensity factor have been proposed in recent years. However, most of them take only third or fourthorder polynomial stress distributions into account. For complicated stress distributions which ...
Experimental Investigation of Net Section Collapse Criterion for Circumferentially Cracked Cylinders Subjected to Torsional Moment
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: When a cracklikeflaw is detected in piping during inservice inspection, the limit load criterion given in the codes such as JSME Rules on FitnessforService for Nuclear Power Plants or ASME Boiler and Pressure Vessel Code ...
Remaining Fatigue Lives of Similar Surface Flaws in Accordance With Combination Rules
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: When multiple flaws are detected in structural components, the remaining lives of the components are estimated by fatigue flaw growth calculations using combination rules in fitness-for-service (FFS) codes. Many FFS codes ...
Experimental Study on Failure Estimation Method for Circumferentially Cracked Pipes Subjected to Multi-Axial Loads
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: When a crack is detected in a piping line during in-service inspections, failure estimation method provided in ASME Boiler and Pressure Vessel Code Section XI (ASME Code Section XI) or JSME Rules on Fitness-for-Service for ...
Remaining Lives of Fatigue Crack Growths for Pipes With Subsurface Flaws and Subsurface to Surface Flaw Proximity Rules
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: If a subsurface flaw is located near a component surface, the subsurface flaw is transformed into a surface flaw in accordance with a subsurfacetosurface flaw proximity rule. The recharacterization process from subsurface ...
Experimental and Analytical Studies on the Effect of Excessive Loading on Fatigue Crack Propagation in Piping Materials
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The seismic design review guide in Japan was revised in September 2006 to address the occurrence of a large earthquake beyond the design basis. In addition, Japanese nuclear power plants (NPPs) experienced multiple large ...