Article
Energy & Fuels
Zhu-Wu Zhang, Jin-Chang Wang, Jiu-Hong Zhang, Y. Frank Cheng
Summary: The inclination angle of a corrosion defect has a significant impact on the local mechano-electrochemical effect in a simulated soil solution. Different inclination angles result in varying levels of stress concentration and corrosion rates, with the most severe stress concentration observed when the inclination angle is 0 degrees.
Article
Engineering, Marine
Yunfei Huang, Peng Zhang, G. Qin
Summary: In this study, a finite element model was used to investigate the mechanoelectrochemical interaction of dent-corrosion combination defects on an operating pipeline. The results show that the equivalent plastic strain and anodic current density of the pipeline are insensitive to operating pressure, but highly dependent on the diameter-to-thickness ratio and geometries of the defects.
Article
Engineering, Chemical
Zhuwu Zhang, Jiuhong Zhang, Mingchao Ding
Summary: The corrosion mechanism of X80 steel in simulated solutions was studied, and a new finite element model was developed to analyze the effect of external wall defects on the internal wall corrosion of oil pipelines. The results showed that the corrosion rate of the internal wall was significantly increased by the growth of external wall defects. Additionally, under mechano-electrochemical interaction, corrosion defects grew faster in the depth and length directions due to larger stress and anode-like conditions, while the corrosion rate in the width direction was inhibited by smaller stress and cathode-like conditions.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Engineering, Mechanical
Zhuwu Zhang, Shaohuang Chen
Summary: The study highlights the importance of considering the combined effects of internal pressure and axial applied stress on the localized corrosion rate of pipelines with defects. Depending on the angle of the defect, the maximum stress and electrochemical corrosion can be significantly or slightly affected by the applied stress.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Zhuwu Zhang, Jiuhong Zhang, Jinchang Wang, Y. Frank Cheng
Summary: This study compared the assessment of local corrosion at a defect on a pipeline using 2D and 3D finite element models under mechano-electrochemical interaction. The 2D model showed higher local stress and more negative corrosion potential at the defect, leading to lower threshold internal pressure causing local yielding. On the other hand, the 3D model was more conservative for predicting corrosion rate of corroded pipelines and introduced the concept of rAZ to define the growth mode of corrosion defects.
Article
Engineering, Civil
Bipul Chandra Mondal, Ashutosh Sutra Dhar, Hasib Ibne Hafiz
Summary: This study investigates the burst pressure of corroded and uncorroded pipe bends using finite element analysis. It finds that the pipe bend reduces the burst pressure, with the reduction depending on the bend radius. The study also identifies the effects of corrosion location and steel grade on the burst pressure.
THIN-WALLED STRUCTURES
(2022)
Article
Chemistry, Physical
Shiwen Guo, Luyao Xu, Shaohua Dong, Y. Frank Cheng
Summary: Repurposing natural gas pipelines for hydrogen transport has gained significant attention, but corrosion defects on these aged pipelines can lead to hydrogen embrittlement. A finite element model integrating solid mechanics and hydrogen atom diffusion was developed to investigate hydrogen atom distribution at a corrosion defect on a steel pipe segment under longitudinal tensile strains. The applied strain affects local stress and strain concentrations, thus influencing hydrogen atom diffusion. Without strain, hydrogen atoms diffuse uniformly into the pipe body driven by a concentration gradient. However, strain-driven diffusion leads to hydrogen atom accumulation at the corrosion defect, and the location of accumulation depends on the defect characteristics.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Multidisciplinary
Fei Xie, Wenhao Zhu, Dongxu Sun, Chaoguang Liu, Zhengyang Hu, Guodong Yang
Summary: The fitness for service assessment of corrosion defects is crucial for the safe operation of submarine pipelines. The initial corrosion depth and defect angle have a significant impact on the stress and corrosion rate of corrosion defects.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2022)
Article
Construction & Building Technology
Guojin Qin, Yunfei Huang, Yihuan Wang, Y. Frank Cheng
Summary: In this study, 3D finite element models were developed to simulate the mechano-electrochemical interaction between corrosion defects with different orientations on pipelines. The results showed that the strength of the interaction depended on the longitudinal or circumferential spacing between defects, with the strongest interaction occurring when the spacing is 0. As the defects overlapped or separated, the interaction decreased. Increased internal pressure led to local plasticity deformation and increased corrosion rate. Sensitivity analysis showed that the interaction was most sensitive to circumferential spacing.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2023)
Article
Engineering, Civil
Guojin Qin, Y. Frank Cheng
Summary: The study found that the M-E effect at corrosion defect on pipelines increases stress concentration and corrosion rate, reducing the failure pressure of the pipe. The effect is more pronounced when the pipe is suspended. The depth of the defect has a significant impact on stress and current density.
THIN-WALLED STRUCTURES
(2021)
Article
Energy & Fuels
Jialin Sun, Y. Frank Cheng
Summary: A finite element-based model was developed to study the mechano-electrochemical interaction between adjacent corrosion defects on an X46 steel pipe. A new criterion was proposed to define the threshold condition for the mutual interaction between the defects.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Multidisciplinary
Jian Zhao, Yunrong Lv, Y. Frank Cheng
Summary: This study developed a new finite element-based method to assess the pressure capacity of a corroded X80 steel pipe containing a dent, considering their interaction and the effect on further corrosion growth. The presence of a dent significantly changes the local stress distribution and elevates stress to plastic range. The interaction between the dent and the corrosion defect depends on the initial corrosion depth and the initial dent depth. This interaction must be included in the assessment of pipeline burst failure.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2022)
Article
Materials Science, Multidisciplinary
Yue Hou, Wei Wang, Zihao Guo, Yuan Tian, Shougang Chen
Summary: In this study, a mechano-electrochemical bidirectional coupling finite element method (FEM) simulation model was developed to investigate the galvanic corrosion behavior of the Al alloy-316L SS galvanic couple. The results revealed that the corrosion defect played a crucial role in the mechanical behavior of the Al alloy, and external loading aggravated the galvanic corrosion at the defects. The thickness of the Al (OH)(3) deposition layer reflected the electrochemical reactivity at different positions on the anode surface.
MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Civil
Zhuwu Zhang, Liping Guo, Y. Frank Cheng
Summary: A finite element model was developed to assess the interaction of internal and external defects on pipelines. It was found that external defects have higher maximum stress than internal defects, and pipelines with only external defects require a larger longitudinal spacing before interaction occurs.
THIN-WALLED STRUCTURES
(2021)
Article
Multidisciplinary Sciences
Ghadeer Mubarak, Ibrahim Gadala, Imad Barsoum, Akram Alfantazi
Summary: This study investigates the corrosion kinetics and crack propagation in buried transmission pipelines made of high-strength low alloy steel API X100. Two numerical models were developed to address the gap in understanding the corrosion and crack behavior of this steel grade in near-neutral pH environments. The findings contribute to improving the performance of corroded pipelines in such environments.
Article
Materials Science, Multidisciplinary
Mingjie Dai, Jing Liu, Feng Huang, Qian Hu, Chengsi Cao, Y. Frank Cheng
Article
Materials Science, Multidisciplinary
Yani Zhang, Guoxian Zhao, Y. Frank Cheng
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY
(2020)
Article
Chemistry, Multidisciplinary
Hongwei Liu, Yuning Dai, Y. Frank Cheng
ARABIAN JOURNAL OF CHEMISTRY
(2020)
Article
Biophysics
Hongwei Liu, Y. Frank Cheng
COLLOIDS AND SURFACES B-BIOINTERFACES
(2020)
Article
Materials Science, Multidisciplinary
Yao Yang, Y. Frank Cheng
Article
Materials Science, Multidisciplinary
Hongwei Liu, Y. Frank Cheng
Article
Engineering, Civil
Jialin Sun, Y. Frank Cheng
ENGINEERING STRUCTURES
(2020)
Article
Engineering, Mechanical
Zhuowei Tan, Dalei Zhang, Liuyang Yang, Zhenbo Wang, Frank Cheng, Mingyang Zhang, Youhai Jin, Shidong Zhu
TRIBOLOGY INTERNATIONAL
(2020)
Article
Energy & Fuels
Guojin Qin, Y. Frank Cheng
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2020)
Article
Energy & Fuels
Yi Shuai, Xin-Hua Wang, Y. Frank Cheng
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2020)
Article
Engineering, Civil
Zhuwu Zhang, Liping Guo, Y. Frank Cheng
Summary: A finite element model was developed to assess the interaction of internal and external defects on pipelines. It was found that external defects have higher maximum stress than internal defects, and pipelines with only external defects require a larger longitudinal spacing before interaction occurs.
THIN-WALLED STRUCTURES
(2021)
Article
Energy & Fuels
Xiaoqin Song, Dongxin Li, Xiao Sun, Xingjie Mou, Frank Cheng, Yuexin Yang
Summary: Numerical models were developed to investigate the critical inclination of a pipeline to eliminate water accumulation at the floor of the pipe carrying oil-water fluid. Quantitative relationships were determined between the pipe inclination angle and factors such as flow velocity, viscosity, and pipe diameter, preventing water accumulation.
Article
Construction & Building Technology
Shan Qian, Y. Frank Cheng
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Construction & Building Technology
Zhuwu Zhang, Xin Ni, Y. Frank Cheng
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Review
Electrochemistry
Da-Hai Xia, Shizhe Song, Yashar Behnamian, Wenbin Hu, Y. Frank Cheng, Jing-Li Luo, Francois Huet
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2020)
Article
Engineering, Multidisciplinary
Abraham Mensah, Srinivas Sriramula
Summary: This paper proposes a pathway for developing efficient performance functions to evaluate the probability of failure for interacting pipeline corrosion clustering defects using a probabilistic finite element-based reliability method. The framework reduces computational cost and offers informed decision-making on risk and maintenance management.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2024)
Article
Engineering, Multidisciplinary
Baozhu Zhang, Wenchun Jiang, Yun Luo, Wei Peng, Yingjie Qiao
Summary: This paper studies the distribution of residual stress in thick wall girth welds using narrow-gap welding. The study finds that the heat input, wall thickness, radius thickness ratio, and number of welding passes have an effect on residual stress. A model for the distribution of welding residual stress through the wall thickness is proposed, and its results are in good agreement with finite element calculation results.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2024)
Article
Engineering, Multidisciplinary
Stefan Culafic, Darko Bajic, Tasko Maneski
Summary: This paper presents experimental research on a branch model conducted in laboratory conditions. The study verifies the linear relationship between stress and internal pressure in the field of elasticity and reveals the occurrences when stresses exceed the yield strength of the branch material, such as plastic deformations of the branch model. The research also defines the dependence of stress on internal pressure in both the field of elasticity and the zone of residual stresses.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2024)
Article
Engineering, Multidisciplinary
Wenchun Jiang, Wenlu Xie, Xinyue Qi, Yangguang Deng, Yu Wan, Xuefang Xie
Summary: Various types of solid-state phase transformations (SSPT) occur during the SA508 steel welding process, leading to complex microstructure distribution and significant influence on residual stress distribution. To better control microstructure and residual stress, optimization of process parameters related to welding thermal cycles is necessary.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2024)