Journal of Pressure Vessel Technology: Recent submissions
Now showing items 1421-1440 of 4506
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Plastic Buckling of Cones Subjected to Axial Compression and External Pressure
(The American Society of Mechanical Engineers (ASME), 2013)The paper provides details about tests on six steel cones. Test models were machined from 250 mm diameter billet. All cones had substantial and integral top and bottom flanges in order to secure well defined boundary ... -
Applicability of Equivalent Constant Amplitude Loading for Assessing the Fatigue Life of Pipelines and Risers and the Influence of Compressive Stress Cycles
(The American Society of Mechanical Engineers (ASME), 2013)Fatigue life assessment of pipelines and risers is a complex process, involving various uncertainties. The selection of an appropriate fatigue model is important for establishing the inspection intervals and maintenance ... -
The Influence of Connection Geometry on the Fatigue Life of National Pipe Thread Threaded Pipe Couplings
(The American Society of Mechanical Engineers (ASME), 2013)In this paper, fourpoint bending experiments are performed to determine the fatigue life of several threaded pipe couplings. It is shown that fatigue life of these couplings can be improved by designing them with more ... -
Calculating the Optimum Angle of Filament Wound Pipes in Natural Gas Transmission Pipelines Using Approximation Methods
(The American Society of Mechanical Engineers (ASME), 2013)Given the increasing use of composite materials in various industries, oil and gas industry also requires that more attention should be paid to these materials. Furthermore, due to variation in choice of materials, the ... -
Life Assessment of Turbine Components Through Experimental and Numerical Investigations
(The American Society of Mechanical Engineers (ASME), 2013)A new lifetime criterion for withdrawal of turbine components from service is developed in this paper based on finite element (FE) analysis and experimental results. Finite element analysis is used to determine stresses ... -
Beam Mode Buckling of Buried Pipeline Subjected to Seismic Ground Motion
(The American Society of Mechanical Engineers (ASME), 2013)During seismic events, buried pipelines are subjected to deformation by seismic ground motion. In such cases, it is important to ensure the integrity of the pipeline. Both beammode and shellmode buckling may occur in the ... -
Optimum Shape of Constant Stress Toroidal Shells
(The American Society of Mechanical Engineers (ASME), 2013)The paper presents the optimization of toroidal shell crosssections under internal pressure. The wall thickness distribution along a circular centerline is derived in an analytical form. In membrane solution, this crosssection ... -
Combined Effect of Temper and Hydrogen Embrittlement on Threshold for Hydrogen Induced Fracture in Cr Mo Steels
(The American Society of Mechanical Engineers (ASME), 2013)This paper presents the results of the research activities of the subcommittee on hydrogen embrittlement of the Japan Pressure Vessel Research Council (JPVRC). The combined effect of temper embrittlement and hydrogen ... -
Synchrotron Radiation Study on Alloy 617 and Alloy 230 for VHTR Application
(The American Society of Mechanical Engineers (ASME), 2013)Highenergy synchrotron radiation has proven to be a powerful technique for investigating fundamental deformation processes for various materials, particularly metals and alloys. In this study, highenergy synchrotron Xray ... -
Cross Weld Creep Comparison of Power Plant Steels CrMoV, P91 and P92
(The American Society of Mechanical Engineers (ASME), 2013)Results obtained from high temperature creep tests of ferritic steel CrMoV, P91 and P92 crossweld specimens are compared. Data are presented normalized with the results of the corresponding parent metals in order to compare ... -
Fatigue Limit Prediction of the Matrix of 17 4PH Stainless Steel Based on Small Crack Mechanics
(The American Society of Mechanical Engineers (ASME), 2013)The experimentally obtained fatigue limit of high strength steel is generally a value reduced by inherent flaws, and such a value does not characterize the resistance of the matrix of high strength steel to cyclic loading. ... -
Evaluating Risk and Safety Integrity Levels for Pressure Relief Valves Through Probabilistic Modeling
(The American Society of Mechanical Engineers (ASME), 2013)The probability of failure on demand (PFD) for springoperated pressure relief valves (SORVs) is estimated by applying the Frأ©chet and Weibull probability distributions using proof test data from the United States Department ... -
Crack in Corrosion Defect Assessment in Transmission Pipelines
(The American Society of Mechanical Engineers (ASME), 2013)Cracks may occur coincident with corrosion representing a new hybrid defect in gas and oil pipelines known as crack in corrosion (CIC) that is not directly addressed in the current codes or assessment methods. Hence, there ... -
A Nondestructive Evaluation Method: Measuring the Fixed Strength of Spot Welded Joint Points by Surface Electrical Resistivity
(The American Society of Mechanical Engineers (ASME), 2013)Destructive tests are generally applied to evaluate the fixed strength of spotwelding nuggets of zincplated steel (which is a widely used primary structural material for automobiles). These destructive tests, however, are ... -
The Beneficial Influence of Bauschinger Effect Mitigation on the Barrel's Safe Maximum Pressure
(The American Society of Mechanical Engineers (ASME), 2013)The favorable residual stress field generated by the autofrettage process is increasing the barrel's capacity to withstand pressure during firing—defined as the reloading phase. There are two principal autofrettage ... -
Deterministic Formulation of the Effect of Stress Intensity Factor on PWSCC of Ni Base Alloys and Weld Metals
(The American Society of Mechanical Engineers (ASME), 2013)The fundamental correlations such as crack growth rate (CGR) versus K for primary water stress corrosion cracking (PWSCC) of nickelbase alloys in simulated pressurized water reactor environments are quantified with the ... -
Investigation and Validation of Finite Element Analysis Material Modeling for Integrity Assessment of Indented Pipe Under Static and Cyclic Loading
(The American Society of Mechanical Engineers (ASME), 2013)Mechanical damage in transportation pipelines is a threat to its structural integrity. There are many parameters that affect the severity of the mechanical damage which are related to the pipe geometry and material properties, ... -
A Comparative Evaluation of Fatigue and Fracture Characteristics of Structural Components of Liquefied Natural Gas Carrier Insulation System
(The American Society of Mechanical Engineers (ASME), 2013)This study examined the fatigue strength and fracture toughness of the structural components of membrane type liquefied natural gas carrier (LNGC) insulation systems, such as reinforced polyurethane foam (RPUF, insulation ... -
Evaluation of Thermal Contact Resistance at the Interface of Dissimilar Materials
(The American Society of Mechanical Engineers (ASME), 2013)When jointed portions of structures and machines are subjected to thermal loads, various problems and troubles occur due to the difference in thermal expansions between mating parts. In order to accurately analyze thermal ... -
Prediction of Leak Rates Through Porous Gaskets at High Temperature
(The American Society of Mechanical Engineers (ASME), 2013)The ability of a gasket to maintain tightness under different operating conditions has been studied extensively in recent years. However, most of the research studies conducted on leakage predictions was performed at room ...