Journal of Pressure Vessel Technology: Recent submissions
Now showing items 1181-1200 of 4506
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Development of a Scrubber in the Deaerator
(The American Society of Mechanical Engineers (ASME), 2015)A new design of a scrubber has been developed and used in a deaerator. Deaeration of feed water in the boiler system is an essential process in industry today. Any facilities operating with steam have at least one deaerator ... -
Prediction of Long Term Creep Rupture Life of Grade 122 Steel by Multiregion Analysis
(The American Society of Mechanical Engineers (ASME), 2015)Conventional timetemperatureparameter (TTP) methods often overestimate longterm rupture life of creep strength enhanced ferritic steels. Decrease in activation energy Q for rupture life in longterm creep is the cause of ... -
Analytical Study of Flow Instability in a Natural Circulation Pressurized Water Reactor Auxiliary Feedwater System1
(The American Society of Mechanical Engineers (ASME), 2015)A pressurized water reactor (PWR) incorporates a passive auxiliary feedwater system (PAFS), a closed natural circulation loop which is aligned to feed condensed water to its corresponding steam generator (SG). During its ... -
Benchmarking PRAISE CANDU 1.0 With Nuclear Risk Based Inspection Methodology Project Fatigue Cases
(The American Society of Mechanical Engineers (ASME), 2015)A probabilistic fracture mechanics (PFM) code, PRAISECANDU 1.0, has been developed under a software quality assurance (QA) program in full compliance with Canadian Standards Association (CSA) N286.799, and was initially ... -
A Unified Shakedown Assessment Method for Butt Welded Joints With Various Weld Groove Shapes
(The American Society of Mechanical Engineers (ASME), 2015)A unified shakedown assessment approach for butt welded pipes or cylindrical pressure vessels with common circumferential butt welded joints for Ugroove, Vgroove, Xgroove, double Ugroove (DUgroove), UVgroove, and singleside ... -
Failure Prediction of Curved Wide Plates Using the Strain Based Failure Assessment Diagram With Correction for Constraint and Notch Radius
(The American Society of Mechanical Engineers (ASME), 2015)The strainbased failure assessment diagram (SBFAD) has been developed for predicting failure from flaws in components subjected to high plastic strains. In this paper, a combined numerical and experimental approach is used ... -
Study on the Allowable Temperature for Preventing Over Welding During Thermal Welding of Polyethylene Pipe
(The American Society of Mechanical Engineers (ASME), 2015)Polyethylene (PE) pipe material may degrade into lower carbon number volatiles quickly during thermal welding when the welding temperature rises up to very high temperature. However, PE may also degrade into lower molecular ... -
Alloy 617 Creep–Fatigue Damage Evaluation Using Specimens With Strain Redistribution
(The American Society of Mechanical Engineers (ASME), 2015)The simplified model test (SMT) method is an alternate approach to determine the cyclic life at elevated temperature. It is based on the use of creep–fatigue hold time test data from test specimens with elastic followup ... -
Modeling of Fluid–Structure Interaction Using Lattice Boltzmann and Finite Element Methods
(The American Society of Mechanical Engineers (ASME), 2015)The use of lattice Boltzmann methods (LBMs) for fluid flow and its coupling with finite element method (FEM) structural models for fluid–structure interaction (FSI) are investigated. FSI modeling methodology and example ... -
Effect of Pad Reinforcement on the Plastic Limit Load for Nozzle Connection of Cylindrical Vessel
(The American Society of Mechanical Engineers (ASME), 2015)The objective of this paper is the further investigation of the shell intersection problem. The pad reinforced nozzle connections of the cylindrical vessel under internal and external loads are investigated using ... -
Elastic Route Estimation of Strain Range in Notched Components Under Thermal Loading Without Performing Stress Linearization
(The American Society of Mechanical Engineers (ASME), 2015)In this paper, a simplified method is proposed for estimating the strain range produced in notched components under thermal loading for the purpose of assessing fatigue, creep, and creepfatigue life consumptions. The ... -
Experimental Study on the Cleavage Fracture Behavior of an ASTM A285 Grade C Pressure Vessel Steel
(The American Society of Mechanical Engineers (ASME), 2015)This work addresses an experimental investigation on the cleavage fracture behavior of an ASTM A285 Grade C pressure vessel steel. One purpose of this study is to enlarge previously reported work on mechanical and fracture ... -
Classification of Flow Patterns in Angled T Junctions for the Evaluation of High Cycle Thermal Fatigue
(The American Society of Mechanical Engineers (ASME), 2015)Temperature fluctuations caused by the mixing of hot and cold streams at tee junctions may lead to high cycle thermal fatigue (HCTF) failure. It is necessary to evaluate the integrity of structures where the HCTF may occur. ... -
A Probabilistic Environmentally Assisted Cracking Model for Steam Generator Tubes
(The American Society of Mechanical Engineers (ASME), 2015)A probabilistic environmentally assisted cracking (PEAC) model was developed to describe the propagation of primary water stress corrosion cracking for Alloy 600 in rolltransition region of steam generator (SG), a severe ... -
Thermal Postbuckling of Imperfect Circular Functionally Graded Material Plates: Examination of Voigt, Mori–Tanaka, and Self Consistent Schemes
(The American Society of Mechanical Engineers (ASME), 2015)Thermal postbuckling of solid circular plates made of a throughthethickness functionally graded material (FGM) is analyzed in this paper. Initial imperfection of the plate is also taken into account. Each thermomechanical ... -
Experimental Investigation of Failure Estimation Method for Circumferentially Cracked Pipes Subjected to Combined Bending and Torsion Moments
(The American Society of Mechanical Engineers (ASME), 2015)When a crack is detected in a nuclear piping system during inservice inspections, failure estimation method provided in codes such as ASME Boiler and Pressure Vessel Code Section XI or JSME Rules on FitnessforService for ... -
Assessment of the Lifetime of Gun Barrels Under High Speed Moving Loads
(The American Society of Mechanical Engineers (ASME), 2015)The aim of this work is to assess the influence of the dynamic stresses (due to the projectile displacement and the gas pressure) on the lifetime of certain medium caliber (less than 40 mm) gun barrels. First, an ... -
Unified Solution of Burst Pressure for Defect Free Thin Walled Elbows
(The American Society of Mechanical Engineers (ASME), 2015)In order to study the mechanical properties of defectfree thin walled elbows (TWE), and evaluate impacts of the intermediate principal stress effect, tension/compression ratio, and strainhardening of materials into logical ... -
Life Cycle Cost Assessment of Seismically Base Isolated Large Tanks in Liquefied Natural Gas Plants
(The American Society of Mechanical Engineers (ASME), 2015)A new methodology is being introduced to address the lifecycle cost (LCC) of baseisolated large liquefied natural gas (LNG) tanks. The relationship between LCC and seismic fortification intensity was established to evaluate ... -
An Artificial Neural Network Model to Predict Material Characteristics From the Results of Miniature Disk Bending Tests
(The American Society of Mechanical Engineers (ASME), 2015)The inverse problem of evaluating mechanical properties of material from the observed values of load and deflection of a miniature disk bending specimen is discussed in this paper. It involves analysis of large amplitude, ...