Journal of Pressure Vessel Technology: Recent submissions
Now showing items 1481-1500 of 4506
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Potential Detrimental Consequences of Excessive PWHT on Pressure Vessel Steel Properties
(The American Society of Mechanical Engineers (ASME), 2012)During fabrication of Pressure Vessels, steels undergo several heat treatments that aim to confer the required properties on the entire equipment, including welds and base metal. Indeed, the ... -
Flexibility Factors for High Density Polyethylene Elbows
(The American Society of Mechanical Engineers (ASME), 2012)A method is proposed to calculate Flexibility Factors for molded and mitered 90 deg polyethylene elbows for both in-plane and out-of-plane loading based on Code Case N-319-3, January 17, 2000. ... -
Effect of Conical Angle and Thread Pitch on the Self-Loosening Performance of Preloaded Countersunk-Head Bolts
(The American Society of Mechanical Engineers (ASME), 2012)This paper investigates the effect of the countersunk conical angle and thread pitch on the loosening performance of preloaded countersunk-head bolts that are subjected to harmonic transverse ... -
Leak Before Break Analysis of Steam Generator Shell Nozzle Junction for Sodium Cooled Fast Breeder Reactor
(The American Society of Mechanical Engineers (ASME), 2012)The steam generators (SG) control the capacity factor of sodium cooled fast reactor plants and hence they are designed with high reliability. One of the strategies to enhance the reliability ... -
Spatial Electrostrictive Actuations of Flexible Circular Tubes
(The American Society of Mechanical Engineers (ASME), 2012)This paper is aimed to study dynamic actuation of circular tubular shell structures coupled with distributed electrostrictive actuator segments. A mathematical model of the hybrid elastic/electrostrictive ... -
Welding Induced Distortions and Strains of a Built-Up Panel, Experiment and Numerical Validation
(The American Society of Mechanical Engineers (ASME), 2012)Weld build-up or weld cladding is a welding process in which weld metal can be deposited in order to reclaim the material thickness. In certain applications, welding induced distortions must ... -
Lower Bound Limit Load Estimation Using a Linear Elastic Analysis
(The American Society of Mechanical Engineers (ASME), 2012)We present a scheme that utilizes one elastic stress field (no iterations) to compute lower bound limit load multipliers of structures that collapse through gross (or localized) plasticity. A ... -
A Procedure to Include the Additional Fatigue Effects of Thermal Gradients in a B31.1 Butt Weld of Dissimilar Metals and Welding End Transition of Similar Metals for Design and Plant Life Extension
(The American Society of Mechanical Engineers (ASME), 2012)Fatigue evaluation in B31.1-2007 is currently done in accordance with para. 102.3.2 and generally considers only the stresses due to displacement load ranges and other cyclic loads. Yet fatigue ... -
Shakedown Analysis Combined With the Problem of Heat Conduction
(The American Society of Mechanical Engineers (ASME), 2012)This paper deals with the computation of shakedown loads of engineering structures subjected to varying loads. In particular, we focus on thermal loading and the resulting heat conduction problem ... -
The Impact of the Bauschinger Effect on Stress Concentrations and Stress Intensity Factors for Eroded Autofrettaged Thick Cylindrical Pressure Vessels
(The American Society of Mechanical Engineers (ASME), 2012)Our previous studies have shown that stress intensity factors (SIFs) are influenced considerably from the presence of the Bauschinger Effect (BE) in thick-walled pressurized cracked cylinders. For ... -
Engineering Design of a Multiple-Use Spherical Explosion Containment Vessel Subjected to Internal Blast Loading From 25 kg TNT High Explosive
(The American Society of Mechanical Engineers (ASME), 2012)Explosion containment vessels have been widely used to contain the internal blast effects. In this paper, we present engineering design and experimental results of a real multiple-use spherical ... -
A Proposed Model for Predicting Clamp Load Loss Due to Gasket Creep Relaxation in Bolted Joints
(The American Society of Mechanical Engineers (ASME), 2012)An improved mathematical model is proposed for predicting clamp load loss due gasket creep relaxation in bolted joints, taking into consideration gasket behavior, bolt stiffness, and joint ... -
Investigation of Hydrostatic Pressure Effect on the Residual Stresses of Circumferentially Butt-Welded Steel Pipes
(The American Society of Mechanical Engineers (ASME), 2012)In this paper, the effect of hydrostatic testing internal pressure on the residual stresses of circumferentially butt-welded steel pipes is investigated by a three dimensional finite elements ... -
Editorial for April 2012 Issue JPVT
(The American Society of Mechanical Engineers (ASME), 2012)I extend my very best wishes to you for good health and happiness in 2012. We look forward to presenting three special topic issues this year. The April 2012 issue will feature papers on ... -
Extension of Fatigue Exemption Rules in Section VIII, Division 2 Slightly Into the Creep Regime
(The American Society of Mechanical Engineers (ASME), 2012)A number of alloys have applications slightly into the creep range that are in cyclic service, such as process reactors. The 2007 edition of Section VIII, Division 2 (2007, ASME Boiler and ... -
Technical Basis of Material Toughness Requirements in the ASME Boiler and Pressure Vessel Code, Section VIII, Division 2
(The American Society of Mechanical Engineers (ASME), 2012)The development of new toughness requirements for carbon and low alloy steels was a major part of the effort to rewrite the ASME B&PV Code, Section VIII, Division 2. The new toughness ... -
Comparison of Fatigue Crack Growth Curves of Japan, the United States, and European Union Code and Standards
(The American Society of Mechanical Engineers (ASME), 2012)There are several codes, standards, handbooks, and guidelines for the nuclear power plant maintenance in Japan, the US, and EU. They include Stress Corrosion Cracking (SCC) and fatigue crack ... -
Design Evaluation Method for Random Fatigue Based on Spectrum Characteristics
(The American Society of Mechanical Engineers (ASME), 2012)This paper shows a new design approach for random fatigue evaluation based on spectral characteristics. Fatigue damage under random loading is usually evaluated by first, decomposing random waves ... -
Inclusion of Torsion Loads in Section XI Flaw Evaluation Procedures for Pipes Containing Circumferential Planar Surface Crack-Like Flaws on the Basis of Limit Load Analysis
(The American Society of Mechanical Engineers (ASME), 2012)Piping systems in power plant may experience combined bending-torsion loads in the presence of planar crack-like flaws. ASME Boiler and Pressure Vessel Code Section XI nonmandatory Appendix C ... -
A Risk-Informed Methodology for ASME Section XI, Appendix G
(The American Society of Mechanical Engineers (ASME), 2012)The American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code [1], Section XI, Appendix G provides a deterministic procedure for defining Service Level A and B pressure–temperature ...