Residual stress in pipeline girth welds- A review of recent data and modelling

Mirzaee-Sisan, Ali; Wu, Guiyi

doi:10.1016/j.ijpvp.2018.12.004

Cited by 39 publications

(16 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In addition, if the welded joint is used for the girth weld connection of the pipe, then it can be divided into three zones [33]: 20% of thickness from the inner surface, 20% of thickness from the outer surface, and the middle 60% of section thickness (Figure 18). The highest data on residual stress were found at mid-thickness.…”

Section: Discussionmentioning

confidence: 99%

Microstructural Changes and Impact Toughness of Fill Pass in X80 Steel Weld Metal

Bai

Ding

Tong

et al. 2019

Metals

View full text Add to dashboard Cite

Multi-pass welding is used in high-pressure and thick-walled pipes in natural gas and oil pipelines. When a welding layer of a welded joint is subjected to different welding thermal cycles, its microstructure and properties change, thereby affecting the overall welding performance. In this study, the temperature and microstructural variations of the fill pass 2 (FP2) in the entire welding process were investigated by combining the thermal cycle with the cascade welding method. The original FP2 and FP2 after double thermal cycles had the worse deformation ability by tensile test. The toughness of FP2 improved after a single thermal cycle, decreased after double thermal cycles, and improved again after triple thermal cycles. The content of martensite–austenite (M–A) constituents and the average grain size of FP2 in the cascade samples were inversely proportional to FP2 toughness. Massive M–A constituents and their unique distribution at the inter-critical temperature were harmful to weld metal toughness. Controlling the size and fraction of M–A constituents can improve weld metal toughness.

show abstract

Section: Discussionmentioning

confidence: 99%

Microstructural Changes and Impact Toughness of Fill Pass in X80 Steel Weld Metal

Bai

Ding

Tong

et al. 2019

Metals

View full text Add to dashboard Cite

show abstract

“…All data are gathered from sources in Refs. [11][12][13][14][15][16], both graphs contain the same information; however, possess unique heat input definitions. (a) Adapted from Scaramangas [14], (b) Adapted from Leggatt [16] with updated definition of heat input.…”

Section: Summary Of Database Parametersmentioning

confidence: 99%

“…An additional publication by Mirzaee-Sisan & Wu [13] explored the potential of incorporating residual stress variability into fracture assessments using probabilistic methods. This consisted of statistical interpretation of a database of experimental results, focussing specifically on the distribution of data from low heat input welds.…”

Section: Introductionmentioning

confidence: 99%

“…This study builds on previous work regarding low heat input girth weld residual stress by implementing an expanded database of experimental measurements. It has been shown by Zhang et al [10] and Mirzaee-Sisan & Wu [13] that variability of residual stress measurements is a problematic issue for prediction and thus accurate treatment within fracture assessments. This work proposes an extensive database of measurements to provide an up-to-date statistical model of variability.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Probabilistic treatment of pipe girth weld residual stress in fracture assessment

Weltevreden

Hadley

Coules

2021

International Journal of Pressure Vessels and Piping

View full text Add to dashboard Cite

This study examines the influence of probabilistic treatment of transverse residual stress in a structural integrity assessment. Pipe girth weld measurement data gathered from numerous studies was statistically interpreted to provide realistic through-thickness stress distributions for use in fracture assessments. The database measurements are shown to follow a normal distribution which is capable of evaluating a probabilistic interpretation of weld residual stress within a fracture assessment. A comparison between deterministic upper bounds, provided by various standards, and probabilistic interpretation was undertaken. The presented results propose a 42% reduction in the estimated probability of failure of the case study using a probabilistic assumption of residual stress. Direct implications include a more realistic model for treatment in fracture assessments which can in turn improve acceptance criteria and avoid unnecessary weld repairs.

show abstract

“…Combining the experimental measurement with numerical simulation is the most effective solution to investigate the residual welding stress [13]. In recent years, the finite element method has been proved to be useful and compelling to evaluate the welding temperature field, residual stress field, and the effect of post-weld heat treatment [14][15][16][17][18][19][20][21]. There is much software that can perform finite element simulation of the welding process, such as SYSWELD, Simufact Welding, ANSYS, ABAQUS, etc.…”

Section: Introductionmentioning

confidence: 99%

Study on Residual Stress of Welded Hoop Structure

Zhang

Wang

et al. 2020

Applied Sciences

View full text Add to dashboard Cite

Residual stress is inevitable during welding, which will greatly affect the reliability of the structure. The purpose of this paper was to study the residual stress of the hoop structure caused by the cooling shrinkage of the weld when the outer cylinder was wrapped and welded under the condition of the existing inner cylinder. In this paper, the “method of killing activating elements” of ANSYS was used to simulate the three-dimensional finite element of the hoop structure. In the case of applying interlayer friction, the welding-forming process and welding circumferential residual stress of the hoop structure were analyzed. The blind hole method was used to test the residual stress distribution of the hoop structure, and the test results were compared with the finite element simulation results to verify the reliability of the simulation calculation method and the reliability of the calculation results. Then, the influence factors of the maximum welding residual stress of the hoop structure were studied. The results show that the maximum residual stress of the outer plate surface of the hoop structure decreases with the increase of the welding energy, the thickness of the laminate, the width of the weld seam, the welding speed, and the radius of the container. Based on the results of numerical simulation, the ternary first-order equations of the maximum residual stress of the hoop structure with respect to the welding speed, the thickness of the laminate, and the width of the weld seam were established. Then, the optimal welding parameters were obtained by optimizing the equations, which provided an important basis for the safe use and optimal design of the welding hoop structure.

show abstract

Residual stress in pipeline girth welds- A review of recent data and modelling

Cited by 39 publications

References 24 publications

Microstructural Changes and Impact Toughness of Fill Pass in X80 Steel Weld Metal

Microstructural Changes and Impact Toughness of Fill Pass in X80 Steel Weld Metal

Probabilistic treatment of pipe girth weld residual stress in fracture assessment

Study on Residual Stress of Welded Hoop Structure

Contact Info

Product

Resources

About