Showing papers in "International Journal of Pressure Vessels and Piping in 2018"

TL;DR: In this article, the authors present the results of a comprehensive analysis of the process of compression and pipeline transport of the natural gas/hydrogen mixture with safety issues, and consider the problem of the consequences of a gas pipeline failure.

TL;DR: In this article, a methodology to predict the external corrosion rate based on the combination of the measurement of six soil parameters and a reduced amount of inspection corrosion rate data is presented, which provides a relatively user-friendly procedure that can be of use by the industry to focus the efforts towards optimizing the security and the continuity of the service.

TL;DR: In this paper, the effect of reheating coarse grain heat affected zone (CGHAZ) at various second peak temperatures on microstructure and its corresponding effect on impact toughness of API X65 and X80 was studied under simulated condition.

TL;DR: In this article, a dynamics model capable of describing the characteristics of hydrodynamic slug flow and fluid-structure interactions involving centrifugal force and Coriolis force is presented to investigate the dynamic behaviours of horizontal pipes subjected to hydrodynamically slug flow.

TL;DR: In this paper, the authors revisited the implementation of the branching design strategy using a 1-D unconventional water-hammer model based upon the Ramos formulation to benefit from its simplified representations of unsteady friction effects and pipe wall behavior.

TL;DR: In this article, an untypical dished head equivalent to a thin-walled shell of revolution is studied and the meridian of the head is a composite curve of a circular arc and a polynomial of the fifth degree.

TL;DR: In this paper, an advanced algorithm is employed to optimize the weight of a functionally graded hollow circular disk of varied thickness rotating at a constant angular velocity about its central axis under thermoelastic load conditions.

TL;DR: In this paper, single-sided welds were manufactured in 30"mm thick plates of SA508 steel, using four welding processes: gas-tungsten arc welding (GTAW), submerged-arc welding (SAW), multipass narrow-gap laser welding (NGLW), and reduced-pressure electron beam (RPEB) welding.

TL;DR: In this article, a model based on a fuzzy logic framework and possibilistic approach may offer a simple yet flexible tool to assist engineers in developing their risk-based inspection (RBI) programs.

TL;DR: In this article, the authors used a nearly-flat tip indentation technique to estimate yield strength for the welds and heat-affected zones from the load-displacement response for each zone.

TL;DR: In this article, the authors presented ductile fracture simulation using the GTN (Gurson-Tvergaard-Needleman) model of through-wall cracked STPT410 carbon steel pipe test under pure bending.

TL;DR: In this article, the authors proposed a risk-based design for subsea oil and gas pipelines by characterizing all sorts of uncertainty related to metal loss defect and incorporating them in the design, and revisited the design variables to ensure recommended target safety level is meet/achieved.

TL;DR: In this paper, the effect of filler wire used in hybrid laser arc welding (HLAW) of AISI304 corrosion resistant steel (CRS) was studied, utilizing the scanning electron microscope, X-ray diffraction (XRD), and cyclic potentiodynamic polarization analysis (CPPA).

TL;DR: In this article, a dynamic model capable of describing axial, bending vibrations and fluid-structure interaction was formulated using FEM (Finite Element Method), where the void fractions of the two-phase flow were predicted by empirical correlations.

TL;DR: In this article, an analytical and a finite element (FE) model of the vessel was constructed, where the radial continuous varying of elastic modulus along the thickness was assumed and implemented in a FE code.

TL;DR: In this paper, the authors studied the distribution of weld residual stress in a spiral welded pipeline by finite element method (FEM) and experimental measurements, and the effect of helix angle on residual stress has also been investigated.

TL;DR: In this article, a coupled thermo-metallo-mechanical model is proposed to analyze the temperature, stress and microstructure fields in multi-pass welding of P92 pipes.

TL;DR: In this paper, the effects of surface finish conditions, compression ratio, grease lubrication and carbon black in the HNBR O-ring seal on the cold leakage are discussed. But the main cause for the cold seal failures is believed to be the detachment of the elastomer seals from their mating sealing parts due to the elastic thermal contraction and the negligible recovery of the HnBR in cold environment.

TL;DR: Analysis of accidents that occurred between 2004 and 2015 in the United States distribution systems and were recorded in the Pipeline and Hazardous Material Safety Administration (PHMSA) database finds that the low pressure and diameter systems account for the greatest number of injuries and fatalities in the case of failure.

TL;DR: In this paper, the transmissibility analysis on the ultrasonic scan data was used to detect cracks or cracks or crack-like flaws, solely from the relative magnitude of the A-scan data in intact materials and in materials with a crack.

TL;DR: In this article, a creep rupture dataset of 11 heats of nickel alloy A617, 304H and 304J1 stainless steels, 6 heats of A3004N aluminum alloy and four Mg-Al alloys is formulated with the parameters for determining C and Q of each dataset.

TL;DR: A novel approach for reliability assessment of aging gas pipeline systems based on a Bayesian network methodology is proposed in this paper with a focus on the improvement of the pipeline strength prediction.

TL;DR: In this article, two opening reinforcement methods of spherical shells under uniform external pressure were investigated to reduce the local weakening and buckling effects of openings in spherical shells, designs comprising the wall reinforcement and the combination of a wall and thick plate reinforcement were employed to minimize buckling instability.

TL;DR: In this article, a fluid-structure interaction model was developed involving SS transient model and theories of plane frame structure to predict the dynamic behavior of a pipeline-riser system caused by severe slugging.

TL;DR: In this paper, an analytical model based on the theory of circular beams on elastic foundation is proposed to evaluate the elastic interaction of bolted flange joints subjected to multi-pass tightening patterns.

TL;DR: In this paper, three austenitic stainless steel welds (ASSW) such as E308, ER316L and ER347, with about 10% of δ-ferrite were thermally aged at 400 °C up to 10000 h to accelerate the thermal ageing expected in a PWR environment.

TL;DR: In this article, a set of six-variable linear partial differential equations of motion of fluid-conveying pipes with general boundary conditions are derived using the Hamilton principle and these equations are solved by the receptance method.

TL;DR: In this paper, a numerical simulation method of buried parallel gas pipelines leakage-induced explosion based on TNT equivalent was presented, and the maximum displacement with different parallel space and different thickness were simulated and discussed.

TL;DR: In this article, the results of the effective axial force and the pipeline end expansion using a finite element study are presented to highlight the effect that the changing SCR tension, combined with the thermal transients and a global seabed slope along the pipeline length, has on the pipeline walking.

TL;DR: In this article, the effects of weld heat input on toughness of 2.25Cr-1Mo steel components were assessed by carrying out crack tip opening displacement (CTOD) and Charpy-impact tests in different metallurgical regions and examining the fracture surfaces using optical and scanning-electron microscopy, and energy-dispersive spectroscopy.