Showing papers in "International Journal of Pressure Vessels and Piping in 1998"

TL;DR: In this paper, the through-thickness variation at the weld and heat affected zone, of the axial and hoop stresses and their sensitivity to variation in weld parameters are studied.

TL;DR: In this paper, a probabilistic approach is adopted for the assessment of remaining life of a pressurised pipeline containing active corrosion defects, and the associated variables are represented by normal or non-normal probability distributions, relative contribution of the random variables and the sensitivity of the reliability index to the change in variance of random variables is also investigated.

TL;DR: In this paper, the elastic bending, plastic bending and membrane stretching regimes of small punch load-deflection curves have been used to estimate the uniaxial tensile stress-strain behavior of ferritic 2.25Cr-1Mo and AISI 403 steels.

TL;DR: In this article, the authors predict the residual stresses during one-pass arc welding in a steel plate using ansys finite element techniques and discuss the effects of travel speed, specimen size, external mechanical constraints and preheating on residual stresses.

TL;DR: In this paper, small punch test techniques using miniature-sized specimens have been investigated on header components and linear relationships, obtained between mechanical characteristics determined from small punch tests and from Charpy tests, have been used to estimate the fracture appearance transition temperature.

TL;DR: In this paper, the tensile and fracture properties of ASTM grade A36 steel have been studied using non-destructive Stress-Strain Microprobe™ system (SSM), which is developed on the basis of automated ball indentation (ABI) technique.

TL;DR: In this article, an improved probabilistic model for fracture toughness prediction is represented which is based on the local criteria for cleavage and ductile fracture proposed by the authors and an improved approximate solution for the problem of the stress-strain state near the crack tip.

TL;DR: In this paper, the average maximum temperature rise during each pass of welding is calculated and plotted against the distance from the weld pad center line. But very limited experimental data regarding temperature distribution during multipass welding of plates is available in the literature.

TL;DR: In this article, an incremental approach for estimation of the hysteresis energy during the random loading was developed, which does not require any cycle counting procedure and can be used for fatigue life prediction under random loading.

TL;DR: In this paper, a comprehensive review is performed to determine the current state-of-the-art in predicting crack-opening displacements for circumferentially cracked pipes under pure bending, pure tension, and combined bending and tension loads.

TL;DR: In this paper, the linear elastic buckling of circular cylindrical shells by the new Differential Quadrature Method (DQM) has been conducted, where the Fluegge shell stability equations serve as the basis of the analysis.

TL;DR: In this article, an improved cyclic plasticity model, composed of the Armstrong-Frederick kinematic hardening rule and the Drucker-Palgen plastic modulus equation, is incorporated into an ANSYS material model subroutine.

TL;DR: In this paper, the tensile and fracture properties of SA333 Gr.6 carbon steel material used for the primary heat transport (PHT) system piping of the Indian pressurized heavy water reactor (PHWR).

TL;DR: In this article, a three-dimensional finite element model is presented to analyze the three dimensional temperature and stresses in single-pass welded pipes, and exactly how the pipe wall thickness influences the welding residual stresses is discussed.

TL;DR: Based on the conservation law and bending theory, a very simple method is proposed to estimate intensity factors for circumferential cracked pipe as discussed by the authors, which can also be used to analyze the periodic cracked pipe under tension.

TL;DR: In this paper, the use of miniature disc specimens to ascertain the loss of toughness in certain critical engineering components which operate at elevated temperatures has been discussed, with a critical appraisal of the relationship between SP transition temperature and the more conventional Charpy fracture appearance transition temperature, obtained from large test specimens.

TL;DR: Based on the third and fourth strength theory, an analytic equation for the optimum radius of an elastic-plastic juncture, rjopt, in autofrettage technology is presented in this paper.

TL;DR: In this paper, the authors evaluated analytical models and finite element models for crack-opening area analysis of pipes with circumferentially cracked pipes for leak-before-break applications.

TL;DR: In this article, a methodology was developed for the determination of the optimal size and optimal spacing between two successive pumping stations of an inclined up or down spherical capsule pipeline, based on the least-cost principle.

TL;DR: In this paper, a probabilistic model for fracture toughness prediction has been elaborated on the basis of the modified local criterion for cleavage fracture, the ductile fracture criterion proposed by authors earlier and the approximated solution for problems relating to the stress-strain state near the crack tip.

TL;DR: In this article, a finite element model for the bend was constructed and loaded taking geometric and material nonlinearities into account using (ABAQUS) nonlinear finite element code.

TL;DR: In this paper, a method of calculating the limit load of a structure via a sequence of incompressible elastic finite element calculations with variable Young's moduli converging to the rigid perfectly plastic problem is used.

TL;DR: In this paper, a hydro-bulging technology for pipe elbows is proposed to overcome difficulties in manufacturing large diameter pipe elbows using traditional technology, and the section profile variation of the toroidal shell during the forming process is discussed.

TL;DR: In this article, an approximate theory is presented to predict the deformation and tearing of clamped circular work-hardening plates subjected to uniformly distributed impulsive loads, based on a power law stress-strain relationship throughout, various equations are obtained and an effective strain failure criterion is suggested for the rupture of the plates.

TL;DR: In this paper, the local stress-strain state (SSS) near the crack tip and its connection with crack tip opening displacement and J-integral under biaxial loading have been studied by finite element methods in elastic-plastic finite strain statement.

TL;DR: In this paper, the limit reliability functions for non-homogeneous two-state series-parallel and parallel-series systems with identical components are discussed. And the results of the results for any large homogeneous multistate series and parallel systems with different components are given.

TL;DR: RahRahman, S., Brust, F. W., Ghadiali, N. and Wilkowski, G., crack-opening-area analyses for circumferential through-wall cracks in pipes as discussed by the authors.

TL;DR: A mathematical model has been developed to predict the fatigue life of flux-cored arc-welded (FCAW) cruciform joints containing lack of penetration (LOP) defects as discussed by the authors.

TL;DR: In this article, the effects of weld strength mismatching and geometry parameters on the relationship between the J-integral and the crack tip opening displacement (CTOD) are investigated.

TL;DR: In this article, the influence of Nb on weld HAZ properties under certain conditions was investigated over a range of C and Nb compositions, typical of the steels concerned, and for three different single cycle heat inputs ranging from 1.5 to 6 kJ/mm.