Showing papers in "International Journal of Pressure Vessels and Piping in 2016"

TL;DR: In this article, the authors report statistical analyses of the mileage and pipe-related incidents data corresponding to the onshore gas transmission pipelines in the US between 2002 and 2013 collected by the Pipeline Hazardous Material Safety Administration of the US Department of Transportation.

TL;DR: In this article, a new interaction rule is proposed to identify whether or not the interaction between defects occurs in finite element models of corroded pipelines with colony of defects composed of two longitudinal or circumferential aligned defects, and four defects arranged in rhombus shape.

TL;DR: In this article, the authors address reliability analysis of corroding pipelines considering also system reliability effects using enhanced Monte-Carlo simulation methods, which have been found to be very efficient for quantification of system reliability in the case of multiple components with arbitrary correlation levels.

TL;DR: In this paper, the microstructural evolutions and weldability of the Inconel 617/310 austenitic stainless steel dissimilar welds were investigated, and the results of varestraint weldability test showed that the joints produced by Inconels 617 and 310 stainless steel filler metals exhibited the highest and lowest resistance to solidification cracking, respectively.

TL;DR: In this article, the MTI JIP database of corroded pipe tests are compared with those predicted by six of the currently available assessment methods, and the failure pressures contained in the MIIJIP database are described.

TL;DR: In this article, a procedure for estimating true stress-strain curves of the Ramberg-Osgood type was proposed, where only the yield and ultimate strength are required for the estimation.

TL;DR: In this article, the MTI JIP database of corroded pipe tests are compared with those predicted by six of the currently available assessment methods, and the failure pressures contained in the MIIJIP database are compared.

TL;DR: In this article, the effects of the material pre-straining level, in the form of plastic pre-compression at room temperature, on the tensile, creep deformation, creep crack initiation and growth behaviour of 316H stainless steel have been examined at 550°C.

TL;DR: In this paper, the authors compare experimental failure pressures with numerical predictions based on several approaches to modelisation, including axisymmetric modeling as well as measured geometry and wall thickness, and show that the ratio of experimental to numerical failure loads varies from 1.05 to 1.16.

TL;DR: In this article, a link between the quantities of selected microstructural features, of the weld metal, near-fusion, coarse grain and fine grain HAZs, and their corrosion behavior was carried out.

TL;DR: In this paper, a critical review on fracture toughness test methods for standard and non-standard specimens, including (1) ASTM, BSI and ISO standard test methods, including constraint correction methods using high and low-constraint specimens for developing a family of constraint-dependent resistance curves, and (3) direct test methods of single edge-notched tension (SENT) or shallow-cracked bending specimens.

TL;DR: In this article, the mismatch in material properties between the two joined materials and their abrupt local variation in different narrow zones of the weld are of importance because the local strength mismatch state plays an important role in the fracture behavior.

TL;DR: In this paper, a finite element model (FEM) has been developed for simulating the failure processes and the visco-plastic behavior of vessel wall, and some failure modes have been found as local melting, plastic damage and creep damage by FEM.

TL;DR: In this paper, a curved beam bending theory based model is presented for estimating through-thickness residual stress profile as a continuous function of pipe geometry and welding heat input. But the model is not suitable for the case of seam welded pipe and vessel components.

TL;DR: In this paper, the authors examined background on the nucleation and development of creep voids in 9%Cr type martensitic steels, presented information regarding methods which allow proper characterization of the creep void, and discussed factors affecting creep fracture behavior in tempered martensite steels.

TL;DR: In this paper, the residual stresses in autogenous high power laser welds and narrow gap laser weld (NGLW) in 10mm thick AISI grade 316L steel plates, using both neutron diffraction and the contour method, were analyzed.

TL;DR: In this article, a weight function is proposed for high aspect ratio semi-elliptical cracks in pipes, and an effective expression is developed analytically to evaluate the stress intensity factor using the weight function method.

TL;DR: In this paper, a three dimensional finite element analysis has been carried on a gasketed joint with single and twin gaskets having nonlinear material properties, to find the influence of gasket contact stress and sealing performance of the joint.

TL;DR: In this article, the authors present a new fitness-for-service (FFS) assessment methodology for process equipment to track and predict pitting corrosion, where pit density is modeled using a non-homogenous Poisson process and induction time for pit initiation is simulated as the realization of a Weibull process.

TL;DR: In this paper, an EB welded joint was manufactured using austenitic AISI 316LN stainless steel and a ferritic-martensitic P91 steel, without the addition of filler material.

TL;DR: In this paper, the ratcheting behavior of 90o-elbow pipe is experimentally investigated under constant inner pressure and force-controlled cyclic loading (abbr cyclic reversed bending).

TL;DR: In this article, Nitrogen content in the 316 LN steel has been increased for optimizing the tensile, creep, fatigue and creep-fatigue interaction strength, whereas the fatigue and fatigue interaction strength have optimum values at around 0.12-0.13% for optimum combination of strengths.

TL;DR: In this article, the elastic interaction between coplanar semi-elliptical surface cracks is examined in detail by considering a large number of dissimilar crack pairs with different depths and aspect ratios.

TL;DR: In this article, a detailed non-linear finite element analysis of an optimized bolt tightening strategy of different joint sizes for achieving proper preload close to the target stress values is presented.

TL;DR: In this article, a small punch test was applied to study the mechanical behavior of P91 steel at room temperature and the selection criteria of the characteristic load PY in terms of two methods are discussed.

TL;DR: In this paper, a linear matching method (LMM) is used to model the fatigue and creep behavior of metal matrix composite (MMC) composites, and a detailed study of the creep ratchetting mechanism is also performed with the concentration on the impact of temperature and different loading conditions.

TL;DR: In this paper, the authors used a well validated Computational Fluid Dynamics (CFD) tool to numerically simulate the solid-liquid mixture flow in both on-shore and off-shore HCPs applications including bends.

TL;DR: In this article, the axial crack-like defects in 90° elbows are inspected by using the T (0, 1) mode guided waves, and it was found that the crack in the middle of the elbow inhibits mode conversion and shares the highest detection sensitivity.

TL;DR: In this paper, a Bayesian methodology is proposed to allow for updating the corrosion model parameters according to the evolution of environmental conditions, and the effectiveness of Bayesian updating is illustrated through an application where the new reliability of degraded pipe networks is assessed.

TL;DR: In this paper, the authors investigated the effect of in-plane and out-of-plane constraints on the CCG rate of a steel with different specimen geometries and showed that with increasing constraints, the rate of CCG increases.