Journal of Pipeline Science and Engineering最新文献

{"title":"Seismic fragility in life cycle cost analysis for gas pipelines: design and cost optimization framework","authors":"Saeedeh Adineh,&nbsp;Behrouz Behnam,&nbsp;Ahmad Tahershamsi,&nbsp;Saeideh Farahani","doi":"10.1016/j.jpse.2025.100299","DOIUrl":"10.1016/j.jpse.2025.100299","url":null,"abstract":"<div><div>This study proposes an innovative approach to optimizing the seismic design of pipeline network by incorporating life-cycle cost analysis (LCCA). The research integrates seismic design, which includes evaluating wave propagation, with a comprehensive LCCA. The LCCA includes the calculation of both initial and secondary costs. Initial costs cover pipeline construction costs, such as materials and installation. Secondary costs include expected seismic loss and maintenance. The research involves modeling the pipeline using FEM, conducting incremental dynamic analyses, extracting seismic fragility curves, calculating expected seismic annual losses, and using a Markov corrosion model to simulate corrosion growth rates and calculate expected maintenance costs. The developed method is applied to a gas pipeline network, which includes varying diameters and thicknesses. Results indicate that among different scenarios, a slight increase in pipe wall thickness leads to a noticeable reduction in the secondary costs, achieving the minimum life-cycle costs (LCC) value. Among secondary costs, expected seismic loss are significantly higher than maintenance costs. However, increasing wall thickness has a greater impact on reducing maintenance costs. Among the various scenarios, those with the greatest wall thickness exhibit the lowest expected seismic loss, with the expected maintenance costs effectively reaching zero. As the diameter-to-wall-thickness ratio decreases, secondary costs decrease, while initial costs and LCC increase. For scenarios with diameter-to-wall-thickness ratios of 95 and 119, the optimum LCC is achieved. Also, the results show that with an increase in diameter of up to 50% and the same thickness, the LCC increases up to 60.63%.</div></div>","PeriodicalId":100824,"journal":{"name":"Journal of Pipeline Science and Engineering","volume":"6 1","pages":"Article 100299"},"PeriodicalIF":4.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145996436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal and residual stress distributions in butt fusion joints of HDPE pipes: FE simulation and experimental validation","authors":"Yi Zhang ,&nbsp;Chuancheng Qin ,&nbsp;Zhaopu Li ,&nbsp;Xiao Xing ,&nbsp;Liwen Wu ,&nbsp;Ben Jar","doi":"10.1016/j.jpse.2025.100292","DOIUrl":"10.1016/j.jpse.2025.100292","url":null,"abstract":"<div><div>Butt fusion welding is widely applied for connecting high density polyethylene (HDPE) pipes but may generate residual stresses in the welded joints, interfering the bearing capacity and the service life of the pipeline system. As a result, tensile tests of the weld joints and the base HDPE specimens have been performed for investigating the effects of welding parameters on the mechanical properties of the two types of specimens. In addition, the hoop residual stresses in the base material and weldments are measured through open ring method and blind-hole method respectively. The finite element (FE) model taking temperature-displacement coupling into consideration has been established based on elastoplastic constitutive equations to depict the residual stress distribution during the welding process. The results show that the maximum tensile yield strength of the welded joints can be achieved when the heating temperature is 230 °C, heating time is 100 s and welding pressure is 2.5 MPa. The residual stress of the base material is tensile at the inner surface while it is compressive at the outer surface. The FE simulation reveals that the residual hoop stress at both the inner and outer wall of the pipe is maximized near the welding seam and manifests itself as tensile stress. Following the path of welding seam-heat affected zone-base material the residual stress first decreases to negative and then increases to remain steady as tensile stress and compressive for inner wall and outer wall respectively. Furthermore, the increase of heating temperature and heating time will increase the residual stress value.</div></div>","PeriodicalId":100824,"journal":{"name":"Journal of Pipeline Science and Engineering","volume":"6 1","pages":"Article 100292"},"PeriodicalIF":4.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145996503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on fracture behavior analysis of X70 steel girth weld with toughness scatter","authors":"Fulai Yang ,&nbsp;Shichao Zhang ,&nbsp;Lie Xu ,&nbsp;Haidong Jia ,&nbsp;Lianshuang Dai ,&nbsp;Zehua Niu ,&nbsp;Denghui Wang ,&nbsp;Zheng Zhang","doi":"10.1016/j.jpse.2025.100287","DOIUrl":"10.1016/j.jpse.2025.100287","url":null,"abstract":"<div><div>This study conducting a comparative analysis of the microstructure and mechanical properties of various girth welds on X70 pipeline steel. The toughness scatter about flux-core arc welding of X70 girth weld joint was studied, and the factors contributing to it were explored. Through Charpy impact test, optical microscope and scanning electron microscope, the causes of different properties of welds on API 5L X70 pipeline steel and the scatter mechanism of girth weld impact toughness were explored. Results indicate that wider weld pools correlate with higher heat inputs, which contribute to the formation of a coarse columnar crystal structure and facilitates the precipitation of Martensite-Austenite (M-A) constituent. These M-A constituents, along with the proportion of different microstructures, have a direct impact on the impact toughness of the welds. As the volume fraction of M-A constituents and the proportion of coarse lath bainite grains increase, the impact toughness decreases. The initiation and propagation of crack at the massive M-A constituent, and the fine granular M-A constituent has a certain hinder effect on the crack. The impact toughness scatter is mainly caused by the high proportion of coarse lath bainite grain, and the uneven distribution of M-A constituent.</div></div>","PeriodicalId":100824,"journal":{"name":"Journal of Pipeline Science and Engineering","volume":"6 1","pages":"Article 100287"},"PeriodicalIF":4.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145996435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A critical and bibliometric review of life cycle cost analysis integration into decision support systems for pipeline asset integrity management","authors":"Adamu Abubakar Sani ,&nbsp;Mohamed Mubarak Abdul Wahab ,&nbsp;Nasir Shafiq ,&nbsp;Nuruddeen Usman ,&nbsp;Shehu Ahmadu Bustani ,&nbsp;Abiola Usman Adebanjo ,&nbsp;Adamu Tafida","doi":"10.1016/j.jpse.2025.100307","DOIUrl":"10.1016/j.jpse.2025.100307","url":null,"abstract":"<div><div>Pipelines play an important role in the worldwide oil and gas industry, allowing hydrocarbons to be transported over long distances. Maintaining their integrity is critical to environmental preservation, energy security, and community safety. Traditional pipeline assets management has been mainly reactive, addressing faults after they occur, resulting in inefficiencies, safety issues, and increased costs. The challenges are worsened by aging pipeline infrastructure, emphasizing the importance of a proactive approach throughout the pipeline’s life cycle. Life Cycle Cost Analysis-Based Decision Support Systems (LCCA-DSS) provide a novel solution that combines advanced data analytics, risk assessment, and optimization algorithms. By taking into consideration the cost of construction, operation, maintenance, and decommissioning, these systems enable proactive decision-making. A bibliometric review using Elsevier’s Scopus and Web of Science databases found extensive research activities on DSS with 127,719 and 14,450 documents identified respectively. Similarly, and LCCA has 3,951 documents in Scopus and 2,128 in web of science. However, only 77 documents in Scopus and 5 Web of science addressed the integration of LCCA and DSS. Regarding DSS and pipeline integrity management, 29 documents were found in Scopus, while none in Web of science. Likewise, integration of LCCA and pipeline integrity management revealed only one document in Scopus and none in web of science at the time the data was collected. Indicating a limited research effort in this domain. The Study reveal that North America, Europe and Asia are the main contributors, with the United State leading with 19 contributions, followed by Canada with 14, and China with 10, while South America and Africa are the regions that shows minimal research activity in this field. By integrating LCCA-based DSS into reality, pipeline asset integrity management will be transformed, and oil and gas infrastructure will have a reliable, economical, and sustainable future. Based on this, a comprehensive LCCA-based DSS framework was developed, it is anticipated that the implementation of this framework can increase pipeline management effectiveness, lower costs, and improve safety by addressing technical, financial, and operational challenges. Moreover, more research is required, since this study highlights the gaps in the current body of knowledge.</div></div>","PeriodicalId":100824,"journal":{"name":"Journal of Pipeline Science and Engineering","volume":"6 1","pages":"Article 100307"},"PeriodicalIF":4.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145996438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of cavitation damage patterns in centrifugal pump blades under rotating flow fields","authors":"Yanyu Cui ,&nbsp;Futai Guo ,&nbsp;Qingmiao Ding ,&nbsp;Bin Cheng","doi":"10.1016/j.jpse.2025.100288","DOIUrl":"10.1016/j.jpse.2025.100288","url":null,"abstract":"<div><div>To investigate the damage caused by the collapse of cavitation bubbles on the centrifugal pumps impeller wall and to explore the relationship between these bubbles and cavitation pits in a rotating flow field, this study employs a visual centrifugal pump setup. Aluminum foils are attached to the impeller surface, with varying rotational speeds and inlet pressure conditions established to observe the formation and collapse of cavitation bubbles. Additionally, the study analyzes the changes in the number and size of cavitation pits on the aluminum surface. The results indicate that: 1) Shear forces and uneven pressure distribution in the rotating flow field cause cavitation bubbles to take on irregular ellipsoidal shapes rather than ideal spherical forms. When these bubbles enter high-pressure regions, they collapse rapidly, generating high-speed microjets that strike the wall, resulting in localized material damage. 2) By comparing the evolution of cavitation pits under different rotational speeds (800 r/min, 1,200 r/min, and 1,600 r/min) and inlet pressures (0.02–0.06 MPa), it is determined that rotational speed is the dominant factor influencing the intensity of cavitation, while pressure difference plays a supplementary role in regulating cavitation intensity. 3) As the pump speed increases from 800 to 1,600 r/min, the fluid’s kinetic energy rises, facilitating the formation and rapid collapse of cavitation bubbles. At 1,600 r/min, the collapse frequency of these bubbles increases significantly, resulting in more cavitation pits with progressively larger diameters. However, excessively high speeds lead to energy dispersion, creating a greater number of smaller cavitation pits.</div></div>","PeriodicalId":100824,"journal":{"name":"Journal of Pipeline Science and Engineering","volume":"6 1","pages":"Article 100288"},"PeriodicalIF":4.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145996462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Blending hydrogen in urban gas pipeline system: Investigation of the hydrogen compatibility of PE pipeline material","authors":"Siyang Wang","doi":"10.1016/j.jpse.2025.100297","DOIUrl":"10.1016/j.jpse.2025.100297","url":null,"abstract":"<div><div>The transportation of hydrogen to downstream users through the existing medium-low pressure polyethylene (PE) urban gas pipeline is an important stage of the utilization of hydrogen energy. However, hydrogen molecules may permeate into the PE materials, leading to deterioration of the mechanical properties and hydrogen leakage, risking the safety of PE hydrogen pipelines. In order to ensure the safety of medium-low pressure PE hydrogen pipelines, this paper investigates the hydrogen compatibility of PE100 material through molecular simulations, in-situ tensile, creep and relaxation tests. The effect of hydrogen permeation and the coupling effect of hydrogen and temperature are studied. Results show that hydrogen has no obvious deterioration effect on PE100 material in the hydrogen environment of 14–50 °C and 0–4 MPa.</div></div>","PeriodicalId":100824,"journal":{"name":"Journal of Pipeline Science and Engineering","volume":"6 1","pages":"Article 100297"},"PeriodicalIF":4.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145996463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sensitivity to hydrogen induced cracking, and corrosion performance of an X65MS pipeline steel in H2S containing environment","authors":"Yang Xu ,&nbsp;Chuanbo Zheng ,&nbsp;Guo Yi ,&nbsp;Han Ma ,&nbsp;Dianchun Ju ,&nbsp;Jiming Zhang ,&nbsp;Xianjun Hu","doi":"10.1016/j.jpse.2025.100280","DOIUrl":"10.1016/j.jpse.2025.100280","url":null,"abstract":"<div><div>This study investigates the microstructure and hydrogen sulfide (H₂S) corrosion resistance of X65MS acid-resistant pipeline steel, focusing on its susceptibility to hydrogen-induced cracking (HIC) and sulfide stress corrosion cracking (SSCC). The steel, characterized by an acicular ferrite (AF) microstructure, was developed using thermomechanical controlled processing (TMCP) to enhance its resistance to acidic, H₂S-rich environments. The AF microstructure, composed of polygonal ferrite, bainitic ferrite, and dispersed M/A islands, exhibits superior resistance to HIC due to its high dislocation density and randomly oriented grain boundaries, which effectively trap hydrogen atoms and mitigate crack propagation. Mechanical tests confirmed that the steel meets API Spec 5L standards, with high impact toughness and low susceptibility to HIC and SSCC. Electrochemical analyses in simulated H₂S environments revealed that the addition of sodium thiosulfate (S₂O₃²⁻) initially accelerates corrosion but forms a protective iron sulfide film at higher concentrations, reducing the corrosion rate. Scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD) analyses highlighted the steel’s fine-grained structure and uniform distribution of precipitates, which further enhance its corrosion resistance. The study concludes that the AF microstructure, combined with micro-alloying elements such as Nb, Ti, and Mo, significantly improves the steel’s resistance to H₂S-induced corrosion, making it suitable for harsh oil and gas transportation environments. These findings provide valuable insights for the development of high-strength, corrosion-resistant pipeline steels.</div></div>","PeriodicalId":100824,"journal":{"name":"Journal of Pipeline Science and Engineering","volume":"6 1","pages":"Article 100280"},"PeriodicalIF":4.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145996467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling and simulation analysis of bi-directional PIG based on the pseudo-rigid body model","authors":"Xincheng Guo ,&nbsp;Ruixin Bao ,&nbsp;Jia Li ,&nbsp;Xiangguang Sun ,&nbsp;Zhen Pan ,&nbsp;Guiyang Ma","doi":"10.1016/j.jpse.2025.100281","DOIUrl":"10.1016/j.jpse.2025.100281","url":null,"abstract":"<div><div>Pipeline inspection gauge (PIG) is essential to ensure the safe transportation of oil and gas pipelines. The sealing disc is an essential part of the bi-directional PIG. In a natural gas transmission pipeline, the sealing disc is in close contact with the inner wall of the pipeline, providing conditions for the fluid to be pressurized and creating a pressure difference for the PIG’s movement. The friction contact between the PIG and the pipe wall directly affects the efficiency of the PIG. Therefore, the mathematical model of the contact behavior between the sealing disc and the pipe wall can provide theoretical guidance for the pigging operation. In this paper, the pseudo-rigid body dynamics model of the sealing disc is established, which can be used to calculate the friction and deformation of sealing disc in pipeline. The finite element model of the PIG operating in straight pipe and girth weld pipe was established and verified. The trend of friction with interference, sealing disc thickness, and friction coefficient was obtained using the pseudo-rigid body model. The theoretical derivation and simulation of the PIG through the girth weld process were carried out. The results showed that the pseudo-rigid body model was in good agreement with the actual dynamic characteristics of PIG. The research results can guide the engineering practice and make the pig move smoothly.</div></div>","PeriodicalId":100824,"journal":{"name":"Journal of Pipeline Science and Engineering","volume":"6 1","pages":"Article 100281"},"PeriodicalIF":4.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145996468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Soil resistance under pipe vertical uplift in compacted clay: shallow tensile and deep shear failure mechanisms","authors":"Chee K. Wong,&nbsp;Richard G. Wan,&nbsp;Ron C.K. Wong","doi":"10.1016/j.jpse.2025.100345","DOIUrl":"10.1016/j.jpse.2025.100345","url":null,"abstract":"<div><div>The paper investigates the mobilization of soil resistance against pipe vertical uplift in compacted Regina clay using both physical and numerical modelling. Results of the physical model tests reveal that the measured uplift resistance is much lower than the one estimated by the relevant equation in engineering design guidelines for buried pipelines. This discrepancy is elucidated through finite element (FE) and extended finite element (XFE) analyses of results from model tests with various pipe diameters and embedment depths. XFE numerical results reveal the presence of tensile failure in the form of a fracture that reduces the uplift resistance. This fracturing cannot be captured explicitly in FE modelling whose predictions are consistent with design guidelines. It is found that for shallow embedment depths (<em>H</em>/<em>D</em> &lt; 5) and high cohesive strengths (<em>c</em>/<em>γH</em> &gt; 5), the soil above the pipe is set in flexure where a hybrid tensile-shear failure mode lowers the uplift resistance. By contrast, tensile failure does not develop at greater embedment depths with lower cohesive strengths, thus yielding an uplift resistance close to the design guidelines. A correlation between the reduction in uplift resistance in compacted clay and its normalized cohesion is developed to enrich the current design guidelines by including hybrid tensile-shear failure modes at shallow embedment depths.</div></div>","PeriodicalId":100824,"journal":{"name":"Journal of Pipeline Science and Engineering","volume":"6 1","pages":"Article 100345"},"PeriodicalIF":4.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145996505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantitative assessment of pipeline defects utilizing a dual-stage deep learning framework: Integration of pretrained YOLO network and multi-input parallel convolution architectures on magnetic flux leakage data","authors":"Jialiang Xie ,&nbsp;Jie Yang ,&nbsp;Kuan Fu ,&nbsp;Linxi Tai ,&nbsp;Xia Wang ,&nbsp;Jianjun Zhu ,&nbsp;Jianli Wang","doi":"10.1016/j.jpse.2025.100282","DOIUrl":"10.1016/j.jpse.2025.100282","url":null,"abstract":"<div><div>As long-distance oil pipelines near the end of their operational tenure, the propensity for leakage due to localized defects markedly increases, necessitating the imperative for systematic inspection and sustained maintenance efforts. Magnetic Flux Leakage (MFL) inspection, a mainstream non-destructive testing methodology, has been extensively adopted. In light of the voluminous nature of monitoring data, deep learning and computer vision technologies play a pivotal role in enhancing the efficiency and accuracy of detection. This study introduces an innovative cascading detection technique that amalgamates the advanced visual recognition network You Only Look Once (YOLO) v8 with a novel multi-input parallel convolution structure. Through channel fusion-based image preprocessing techniques, it adeptly utilizes tri-axial MFL experimental data to precisely localize pipeline defects, while concurrently predicting the axial length and depths of pipeline defects. This research meticulously investigates the impact of various data processing techniques and model architectures on the accuracy of defect recognition and their quantifiable prediction. Following stringent experimental validation, our data preprocessing method has demonstrated superiority over conventional approaches in defect detection and quantitative assessment tasks. Moreover, the proposed multi-input parallel convolution significantly outperforms conventional single-input prediction networks in quantifiable predictive accuracy concerning defects, demonstrating its potential in enhancing the predictive maintenance of long-distance oil and gas pipelines by enabling more precise, timely, and cost-effective interventions.</div></div>","PeriodicalId":100824,"journal":{"name":"Journal of Pipeline Science and Engineering","volume":"6 1","pages":"Article 100282"},"PeriodicalIF":4.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145996434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}