Journal of Pressure Vessel Technology: Recent submissions
Now showing items 1441-1460 of 4506
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Welding Residual Stress in a Large Diameter Nuclear Reactor Pressure Vessel Nozzle
(The American Society of Mechanical Engineers (ASME), 2013)The Atucha II nuclear power plant is a pressurized heavy water reactor (PHWR) being constructed in Argentina. The original plant was designed by Kraftwerk Union (KWU) in the 1970’s using the German methodology of break ... -
Design Optimization of Compound Cylinders Subjected to Autofrettage and Shrink Fitting Processes
(The American Society of Mechanical Engineers (ASME), 2013)The autofrettage and shrinkfit processes are used to increase the load bearing capacity and fatigue life of the pressure vessels under thermomechanical loads. In this paper, a design optimization methodology has been ... -
Sloshing Analysis of Flowing Liquid in 3D Tank Using Boundary Elements Method
(The American Society of Mechanical Engineers (ASME), 2013)A numerical model based on the boundary element method is proposed for the sloshing of a flowing liquid in a threedimensional tank. Assuming a mean flow in the tank in addition to a perturbation flow, the nonlinear boundary ... -
A Study on Stress Corrosion Crack of Thick Walled Elbow in Manifold for Acid Fracturing
(The American Society of Mechanical Engineers (ASME), 2013)Acid fracturing, with a pumping pressure up to 140 MPa for fractural liquid injection, is commonly used in enhanced oil recovery. Subjected to severely high hoop stress, stress corrosion cracking (SCC) often occurs at ... -
New Criterion for the Definition of Plastic Limit Load in Nozzle Connections of Pressure Vessels
(The American Society of Mechanical Engineers (ASME), 2013)In this research, a new criterion for determining the plastic limit load in shell intersections using elasticplastic finite element analysis is presented. Using the proposed maximum criterion of the rate of the change of ... -
Effect of Helix Angle on the Stress Intensity Factor of a Cracked Threaded Bolt
(The American Society of Mechanical Engineers (ASME), 2013)The fracture behavior of a crack in a threaded bolt depends on the stress intensity factor (SIF). Available SIF solutions have approximated the threaded bolt as a circular groove, thus, the SIF predominantly corresponds ... -
On the Use of Shape Memory Alloy Studs to Recover Load Loss in Bolted Joints
(The American Society of Mechanical Engineers (ASME), 2013)Creep is an important factor that contributes to the clamp load loss and tightness failure of bolted joints with and without gaskets over time. Retightening of the joint can be expensive and time consuming; therefore, it ... -
Residual Stress Analysis of the Autofrettaged Thick Walled Tube Using Nonlinear Kinematic Hardening
(The American Society of Mechanical Engineers (ASME), 2013)Recent research indicates that accurate material behavior modeling plays an important role in the estimation of residual stresses in the bore of autofrettaged tubes. In this paper, the material behavior under plastic ... -
Incorporation of Friction Coefficient in the Design Equations for Elevated Temperature Tanks
(The American Society of Mechanical Engineers (ASME), 2013)Storage tanks operating at elevated temperatures (200 آ°F to 500 آ°F) need to consider stresses due to thermal expansions and restraints, due to the tank shell and bottom plate interactions and operating conditions in ... -
Fundamental Mechanics of Walking of Unanchored Flat Bottom Cylindrical Shell Model Tanks Subjected to Horizontal Harmonic Base Excitation
(The American Society of Mechanical Engineers (ASME), 2013)Assuming very large slide displacement subsequent to tank rock motion to be a possible scenario of tank walk motion, fundamental mechanics of the walk motion of unanchored flatbottom cylindrical shell model tanks subjected ... -
Moving Beyond Nondestructive Examination to Proactive Management of Materials Degradation
(The American Society of Mechanical Engineers (ASME), 2012)There is growing interest in life extensions to enable longer term operation (LTO) for both existing nuclear power plants (NPPs) and proposed new NPPs. In order to justify an initial license ... -
Intelligent Risk Assessment for Pipeline Third-Party Interference
(The American Society of Mechanical Engineers (ASME), 2012)In petroleum industry, pipeline is singled out as it is the safest and the most economically viable means of transporting large quantities of oil and natural gas. However, accidents to pipelines ... -
Numerical Analysis of JNES Seismic Tests on Degraded Combined Piping System
(The American Society of Mechanical Engineers (ASME), 2012)Nuclear power plant safety under seismic conditions is an important consideration. The piping systems may have some defects caused by fatigue, stress corrosion cracking, etc., in aged plants. ... -
Multiple Fatigue Crack Growth Prediction Using Stress Intensity Factor Solutions Modified by Empirical Interaction Factors
(The American Society of Mechanical Engineers (ASME), 2012)It is generally believed that multiple fatigue crack growth prediction is difficult with the use of conventional stress intensity factor (SIF) solution calculations because of issues such as SIF ... -
Machining of Aircraft Titanium With Abrasive-Waterjets for Fatigue Critical Applications
(The American Society of Mechanical Engineers (ASME), 2012)Laboratory tests were conducted to determine the fatigue performance of abrasive-waterjet- (AWJ-) machined aircraft titanium. Dog-bone specimens machined with AWJs were prepared and tested with and ... -
Residual Stress Measurements of Explosively Clad Cylindrical Pressure Vessels
(The American Society of Mechanical Engineers (ASME), 2012)Tantalum refractory liners were explosively clad into cylindrical pressure vessels, some of which had been previously autofrettaged. Using explosive cladding, the refractory liner formed a metallurgical ... -
Prediction of Time-Correlated Leakage Rates of Bolted Flanged Connections by Considering the Maximum Gasket Contact Stress
(The American Society of Mechanical Engineers (ASME), 2012)The leakage rates of bolted flanged connections change with service time due to the gasket contact stress relaxation and degradation of gasket material. The nonuniform distribution of gasket ... -
Experimental and Numerical Characterization of Flow-Induced Vibration of Multispan U-tubes
(The American Society of Mechanical Engineers (ASME), 2012)This paper describes a test program that was developed to measure the dynamic response of a bundle of steam generator U-tubes with anti-vibration bar (AVB) supports, subjected to Freon two-phase ... -
Pellet-Cladding Interaction Probability Assessment Model
(The American Society of Mechanical Engineers (ASME), 2012)The main objective of the reported study was developing a method for predicting pellet-cladding interaction (PCI) failure probability in pressurized water reactor (PWR) fuel in transient conditions ... -
Slitting and Contour Method Residual Stress Measurements in an Edge Welded Beam
(The American Society of Mechanical Engineers (ASME), 2012)Welding is known to introduce complex three-dimensional residual stresses of substantial magnitude into pressure vessels and pipe-work. For safety-critical components, where welded joints are not ...