Effects of Hydrogen on Retarding the Transformation of Strain-Induced Martensite and Impact on Tensile Properties of 304L Stainless Steel Pipings at Different Strain Rates
Available online 15 September 2026
This study investigates impact of hydrogen on mechanical properties and strain-induced martensitic transformation in metastable 304L stainless steel under strain rates spanning 2 × 10-4 to 1 s-1. The...
Numerical Investigation of Topology Evolution and Wall-Attachment Mechanisms of Underexpanded Hydrogen-Blended Natural Gas Jets Issuing from Crack-Equivalent Slots in Confined Spaces
Available online 15 September 2026
•A 2D crack-equivalent slot model was developed for underexpanded HBNG jets.•Low pressure ratio induces pre-compression and a double-peak Mach profile.•Hydrogen blending weakens direct core-wall coupling...
Physics- Guided Wasserstein Generative Adversarial Network for Magnetic Flux Leakage Signal Augmentation in Pipeline Defect Characterization
Available online 11 September 2026
Magnetic flux leakage (MFL) inspection is widely used for corrosion and metal-loss detection in oil and gas pipelines, yet accurate defect characterization requires large, diverse, and physically reliable...
SPATIAL PERSISTENCE OF THE PRESSURE-MAXIMUM REGION IN RING GAS PIPELINES: ANALYTICAL MODELING AND MONITORING IMPLICATIONS
Available online 3 September 2026
•-Analytical modeling of transient gas flow in ring pipelines with discrete withdrawals.•-A spatially persistent pressure-maximum region is identified under varying withdrawal configurations and loading...
Structural Performance and Design Implications of Cured-in-Place-Pipe liners Under Radial Compression
Available online 1 September 2026
Understanding the structural behavior of cured-in-place pipe (CIPP) liners under radial compression is essential for ensuring the long-term reliability of trenchless rehabilitation systems. This study...
A high-efficiency strategy for blending hydrogen into high-pressure natural gas pipelines: Mechanics modeling and numerical analysis
Available online 1 September 2026
High-pressure hydrogen blending in natural gas pipelines is a key pathway for large-scale hydrogen utilization, while mixing uniformity directly affects pipeline safety and measurement accuracy and...
A Pipeline Reliability and Integrity Management System for leak detection, localization, and prevention in long-distance pipelines
Available online 1 September 2026
Leak detection and integrity management technologies are becoming increasingly critical in the mining industry due to the extensive use of long-distance slurry and water pipelines, their exposure to...
A Comparative study of hydrogen embrittlement susceptibility of L245MH and L360MH pipeline steels in high-pressure gaseous hydrogen
Available online 31 August 2026
The hydrogen embrittlement (HE) susceptibility of the L245MH and L360MH pipeline steels was evaluated in a 6.3 MPa high-pressure hydrogen environment, through slow strain rate tensile (SSRT) tests and...
Research on pressure characteristics and models of horizontal gathering pipelines for oil-gas-water during shutdown and restart
Available online 31 August 2026
•Reveals coupling mechanism of wall adhesion, phase change, and thixotropy, linking static thermal resistance to dynamic flow.•Builds integrated thermal-hydraulic model for synergistic prediction of...
A Prior-Based Adaptive Simulation Method for Natural Gas Networks under Irregular Supply–Demand Fluctuations
Available online 31 August 2026
•A boundary-excitation-aware adaptive time-stepping method (BEATS) is proposed.•Global time-step planning is achieved using complete boundary information.•Structural events and local fluctuations jointly...
Transient gravity-induced stratification of hydrogen–methane mixtures in pipeline systems: A coupled thermodynamic–transport and timescale analysis
Available online 31 August 2026
•Developed a coupled thermodynamic-transient transport framework for H₂–CH₄ mixtures in vertical pipelines.•Integrated Peng–Robinson EOS with gravitational drift and molecular diffusion.•Quantified<1.5%steady-state...
Pixel-to-pixel thermal pattern prediction for heat-loss quantification in industrial piping systems via conditional U-Net with finite element-based transfer learning
Available online 27 August 2026
•Superpixel segmentation with conditional U-Net for heat-loss analysis is proposed.•The model predicts a baseline from observed thermal images of the segmented region.•Superpixel-based segmentation...
Hydrogen-steel interactions in gaseous environments studied by density functional theory
Available online 23 August 2026
Hydrogen transport in pipelines contributes to accelerated realization of a full-scale hydrogen economy. However, steel pipelines are potentially susceptible to hydrogen embrittlement in high-pressure...
Influence of guar gum on the flow characteristics and wear performance during pipeline transportation of coarse iron ore slurry
Available online 22 August 2026
This investigation focuses on the effectiveness of Guar gum (GG) as a rheology modifier, slurry stabilizer, drag reducer, and wear inhibitor for handling concentrated and coarse iron ore slurries in...
Quantification of the maximum allowable pressure penalties in hydrogen transmission pipelines: A parametric assessment of the material performance factor Hf under ASME B31.12–PL Option A
Available online 19 August 2026
•Quantifies maximum allowable pressure penalties in hydrogen transmission pipelines.•Compare ASME B31.12 and ASME B31.8 using identical geometry and material inputs.•Identifies activation of fracture-control...
Experimental and Computational Investigations of Cured-in-Place Structural Liners for Pipeline Rehabilitation: A Multi-Level Review
Available online 13 August 2026
In the United States, there have been approximately 8,000 pipeline accidents since 1986, resulting in over 500 deaths, 2300 injuries, and $7 billion in property loss, with 35% of failures caused by...
Overcoming Noise Interference and Sample Scarcity in Digital Radiography: A Synergistic Approach for Intelligent Pipeline Girth Weld Defect Recognition
Available online 13 August 2026
•A synergistic framework is developed to overcome intense noise interference and sample scarcity in DR weld defect recognition.•A dual-dimensional GRDM is proposed, achieving 91% edge gradient retention...
Challenges and Advancements in Offshore Pipelines In-Line Inspection (ILI) and Pigging: A Comprehensive Review
Available online 13 August 2026
•Reviews challenges in offshore pipeline in-line inspection (ILI).•Details ILI tools: caliper, MFL, UT, ECT, and EMAT technologies.•Addresses thick walls, coatings, high pressure, and sour gas issues.•Proposes...
Fracture Evolution and Control of Supercritical/Dense CO2 Pipelines under Thermal-Fluid-Chemical-Mechanical (TFCM) Coupling: A Review of Initiation, Propagation, and Arrest Mechanisms
Available online 12 August 2026
In the context of the large-scale application of global carbon capture, utilization and storage (CCUS) technology, the safety guarantee of supercritical/dense CO2 pipeline is crucial. Due to the complex...
Research progress of data-driven approaches in oil and gas pipeline magnetic flux leakage detection
Available online 12 August 2026
•98 publications on data-driven methods in magnetic flux leakage (MFL) are reviewed.•The current research state and evolution of research hotspots are identified.•Future research needs for data-driven...
Intelligent Decision Support for Safety Risk Management of Urban Gas Pipeline Network Leakage by Integrating Large Language Models and Knowledge Graph Technologies
Available online 12 August 2026
To address the systemic challenges in risk prevention and control of urban gas pipeline network leakage accidents (UGPNLAs), this study conducts a systematic analysis of 209 accident investigation reports....
Prediction of pipeline remaining useful life based on few-shot crack depth data
Available online 12 August 2026
•We expand the few-shot crack depth data by employing the Paris equation and LSTM neural networks, which constructs a comprehensive temporal sequence of crack depths, thereby establishing a reliable...
Effect of oxygen and nitrogen on hydrogen adsorption and permeation processes
July 2026
•Dissolved gas variations negligibly affect Deff during hydrogen charging.•High H surface coverage and slow Tafel reaction rate occurred in N2 condition.•N and O atoms shown lower adsorption energies...
Understanding detection success of belowground natural gas leaks in urban environments through controlled release experiments
July 2026
•Urban environment significantly reduces natural gas pipeline leak detection success.•Higher leak rates improve the probability of detection by up to 37 pp (percentage points) compared to lower leak...
