Article
Chemistry, Physical
Ci Zhang, Minrui Ran, Yao Wang, Wenyue Zheng
Summary: The corrosion and stress corrosion cracking (SCC) behaviors of 20#, X60, and X80 pipeline steels in a near-neutral pH environment were investigated. The type of steel microstructure was found to affect the propensity for SCC, and a correlation between SCC sensitivity and the yield strength of the steel was identified.
Article
Chemistry, Physical
Sin-Jae Kang, Min-Sung Hong, Jung-Gu Kim
Summary: This study investigated the use of calcareous depositions to mitigate stray current corrosion in buried pipelines. The formation of calcareous deposit layers, especially the CaCO3 layer, effectively reduced the inflow current and acted as current barriers to prevent corrosion damage. Scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction were performed to verify the effectiveness of the deposited layers.
Article
Materials Science, Multidisciplinary
Ying Huo, Bob Varela, Mike Yongjun Tan
Summary: A moving electrochemical probe technique has been developed for detecting coating damages on underground pipelines and evaluating the efficiency of cathodic protection. The capability and accuracy of the probe have been evaluated through experiments and field testing, providing an effective method for coating defect detection and size determination.
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Tianliang Zhao, Shiqi Wang, Zhiyong Liu, Cuiwei Du, Xiaogang Li
Summary: The study investigated the effect of cathodic polarisation on stress corrosion cracking behavior of peak-aged Ni(Fe, Al)-maraging steel in artificial seawater. It found that the steel exhibits better compatibility of strength and hydrogen embrittlement resistance due to the abundant and evenly dispersed Ni(Fe, Al) nanoprecipitates. The mechanism of SCC at different potentials and a novel model for interpreting hydrogen embrittlement were proposed.
Article
Materials Science, Multidisciplinary
Song Longfei, Liu Zhiyong, Li Xiaogang, Guo Xingpeng, Zhang Yinxiao, Wei Wu
Summary: This study investigated the stress corrosion cracking (SCC) behavior of X100 pipeline steels with different heat-treated microstructures in carbonate/bicarbonate solution. The results showed that SCC susceptibility increased as the cathodic potential shifted. At a weak cathodic potential, hydrogen sensitivity controlled SCC behavior, while at a more negative potential, both electrochemical effect and hydrogen sensitivity influenced SCC behavior. The propagation paths of SCC cracks varied with the adjustment of the applied potential.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Yunze Xu, Qiliang Zhang, Hao Chen, Yi Huang
Summary: The interactions between erosion and corrosion of X65 pipeline steel in acid slurry were investigated at different pH levels. Results showed that pH = 3.5 was a critical value for the transition of cathodic reaction under erosion-corrosion. The reduction of Hthorn was the main cathodic reaction at pH < 3.5, leading to scattered small pits. However, at pH >= 3.5, oxygen reduction became the main cathodic reaction, resulting in the formation of erosion-corrosion pits and craters.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Mechanical
Costin Ilinca
Summary: This paper presents a case study on a gas pipeline rupture, explosion, and subsequent fire, aiming to identify the cause and improve the pipeline's strength under specific conditions. The study conducted stress analysis and measured the pipe's actual wall thickness, highlighting the importance of accurately assessing the structural integrity of buried pipelines and the utility of finite element analysis.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Construction & Building Technology
Zhong Li, Baozhuang Sun, Qi Liu, Yifan Yu, Zhiyong Liu
Summary: The study found that square wave polarization (SWP) with alternative stages of pulse current and stable current period plays different roles in stress corrosion cracking (SCC) of pipeline steels. The former mainly contributes to the local anodic dissolution process, while the latter strengthens the cathodic hydrogen evolution process.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Multidisciplinary
Xuxu Yang, Jason Steck, Jiawei Yang, Yecheng Wang, Zhigang Suo
Summary: This study investigates the crack growth in heterogeneous degradation of plastic, specifically in the case of polylactic acid (PLA). The findings show that crack velocity is insensitive to load but sensitive to humidity and pH, providing valuable insights for the development of degradable plastics in healthcare and sustainability.
Article
Construction & Building Technology
Jianguo Feng, Cong Wu, Jingsi Zhang, Chaokui Qin, Zhiguang Chen
Summary: This study investigates the influence of iron ions on the corrosion status of buried-steel pipelines. The results demonstrate that iron ions have a significant impact on the accuracy of potential determination and further affect the assessment of pipeline corrosion. Field tests in iron-rich areas indicate that current standards are insufficient for evaluating the corrosion failure of steel pipelines buried in soils containing iron ions and need to be revised.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2022)
Article
Electrochemistry
Maria Sofia Hazarabedian, Md Zakaria Quadir, Mariano Iannuzzi
Summary: This study developed a double-loop electrochemical potentiokinetic reactivation (DL-EPR) test based on Cr and Mo depletion to quantify the extent of grain boundary precipitation in Alloy 725. The new approach was shown to be highly reproducible and sensitive in detecting small amounts of grain boundary phases. Additionally, the method revealed clear microstructural inhomogeneities across the thickness of the bars, with increasing inhomogeneities observed with larger bar diameters.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Engineering, Mechanical
Menghao Liu, Zhigao Wang, Fangyuan Lu, Cuiwei Du, Xiaogang Li
Summary: This study investigates the failure cause of a cracked 304SS nut exposed to a rural atmosphere. The analysis of crack morphology and corrosion products reveals that intergranular corrosion cracking is the primary failure mode. The excessive amounts of carbon and sulfur in the material significantly reduce its corrosion resistance and toughness, leading to the failure. It is demonstrated that failure of 304SS can occur even in a mild environment as long as the material is sensitized.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Materials Science, Multidisciplinary
Qi Fu, Qingyu Qin, Boxin Wei, Jin Xu, Changkun Yu, Cheng Sun
Summary: The SCC behavior of X80 pipeline steel was studied under the conditions of D. desulfurican, AC interference, and cathodic protection. The results showed that both AC interference and negative CP potential aggravated pitting corrosion and enhanced the SCC susceptibility under constant load. In the saline soil environment containing D. desulfurican, AC greatly contributed to the cracking tendency of X80 pipeline steel, resulting in a narrow safe CP range for practical engineering application, requiring appropriate discharge methods.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Construction & Building Technology
Fei Xie, Jiahang Li, Tan Zou, Dan Wang, Ming Wu, Xiaoqing Sun
Summary: The experimental results indicate that under strong cathodic polarization potential and the presence of SRB, the SCC susceptibility of pipeline steel increases and the risk of hydrogen embrittlement rises.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Marco Ormellese, Silvia Beretta, Fabio Brugnetti, Andrea Brenna
Summary: This study investigates the effects of DC interference on carbon steel in cathodic protection in a soil-simulating environment with varying peak current density and duration.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Pengcheng Li, Hao Zhang, Jun Lu, Ge Li
Summary: Electrolyte engineering is crucial for the commercialization of lithium metal batteries. In this study, lithium metal is stabilized in a highly reactive sulfolane-based electrolyte under low concentration. The use of inorganic-polymer hybrid solid electrolyte interphase enables dense lithium deposition and high plating/stripping efficiency. The low concentration electrolyte also offers excellent cycling stability and cost-effectiveness.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Ziwei Zhao, Pengcheng Li, Zhiqing Zhang, Hao Zhang, Ge Li
Summary: In this study, a novel electrolyte additive (histidine) was introduced into the conventional ZnSO4 electrolyte to address the issues of dendrite growth, hydrogen evolution reaction, and by-product generation with metallic zinc-based anodes. The additive molecule exhibited strong cationic specific absorption with the zinc anode, effectively regulating Zn2+ deposition and inhibiting hydrogen evolution. The unique buffer-like functional groups of histidine further stabilized the electrolyte interphase pH value, reducing by-product generation. With this electrolyte additive, a Zn||Zn symmetric cell showed excellent stability, running for more than 3000 hours under a current density of 2 mA cm-2.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Xuwen Peng, Qian Peng, Meng Wu, Wenda Wang, Yongfeng Gao, Xiong Liu, Yongxiang Sun, Diling Yang, Qiongyao Peng, Tao Wang, Xing-Zhen Chen, Jifang Liu, Hao Zhang, Hongbo Zeng
Summary: A pH and temperature dual-responsive microgel-embedded hydrogel with excellent mechanical properties and antimicrobial properties has been fabricated for potential applications as smart wound dressing materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
An Li, Jing Chang, Tao Shui, Qingxia Liu, Hao Zhang, Hongbo Zeng
Summary: The prevention of calcite aggregation and scaling is a challenging problem in aqueous systems and environmental science. This study investigated the nanoscale topographic features of calcite in aggregation and found that intermolecular and surface forces significantly influence the process. Factors such as solution pH, inhibitor concentration, and salinity were found to affect the forces involved, leading to either repulsion or adhesion, which could affect calcite aggregation and surface deposition.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yimei Chen, Facheng Gong, Wenjing Deng, Hao Zhang, Xiaolei Wang
Summary: A low-cost and biocompatible electrolyte additive with dual-function is designed to optimize the electrode interface and Zn2+ coordination environment. The phytic acid additive can absorb on the electrode surface, cover the active sites for proton attack, and guide the uniform deposition of zinc. It also helps in the de-hydration of Zn [(H2O)6]2+ and reduces water molecules in the first hydration layer of Zn2+ through hydrogen bonding interactions.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Physical
Xuzi Zhang, Yue Li, Hao Zhang, Ge Li
Summary: Researchers designed a three-dimensional material with N-doped carbon nanofibers as the base and uniformly distributed NiCo2S4 nanosheets on the surface to address the issues of dendritic growth and volume fluctuation in lithium metal batteries. The unique structure of the material can guide lithium diffusion and prevent dendritic growth, ensuring long-term stable performance. When paired with a LiFePO4 cathode, the material shows enhanced performance compared to a bare Li anode.
Article
Chemistry, Physical
Yue Li, Hongbo Zeng, Hao Zhang
Summary: In this study, the effect of impurity metal doping on the initial stage of calcite growth was investigated using first-principles methods. The adsorption of the CaCO3 molecule on anhydrous and hydrated calcite surfaces doped with Mg, Cu, Zn, Sr, and Ba was analyzed, as well as the interactions between water molecules and the different dopants. The results suggest that the adsorption ability of anhydrous calcite surfaces towards the CaCO3 molecule is determined by the size of the dopant, while the adsorption behavior for water molecules is dominated by chemical bonding. The study provides new insights into the inhibiting mechanism of Mg, Cu, and Zn impurities on calcite growth and highlights the feasibility of using Sr and Ba dopants to facilitate calcite growth and mineralize toxic Sr and Ba from contaminated environments.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Hao Zhang, Xinyi Wang, Jiarui Zhang, Hai-Bin Yu, Jack F. Douglas
Summary: In this study, we investigated the glass-forming behavior of a metallic glass material (Al90Sm10), which exhibits a fragile-strong glass formation pattern. We focused on the anomalous static scattering and calculated the hyperuniformity index H and the mean-square particle displacement < u(2)> of the liquid. Comparative analysis with crystalline Cu suggests that the critical value of H on the order of 10(-3) is analogous to the Lindemann criterion for melting and softening processes. We further proposed that the emergence of fragile-strong glass formation and liquid-liquid phase separation in this class of liquids is due to a cooperative self-assembly process in the glass-forming liquid.
EUROPEAN PHYSICAL JOURNAL E
(2023)
Article
Chemistry, Physical
Diling Yang, Ziqian Zhao, Lu Gong, Yongxiang Sun, Xuwen Peng, Qiongyao Peng, Tao Wang, Qi Liu, Hao Zhang, Hongbo Zeng
Summary: Research shows that the surface interactions between bubbles, oil, and interface-active species like asphaltenes have a significant impact on various engineering processes. Experimental studies have quantified the surface forces in different aqueous solutions and examined the effects of variables such as asphaltenes concentration, pH, salinity, Ca2+ ions, and surfactants.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yan Dong, Zhiping Deng, Hao Zhang, Guangyi Liu, Xiaolei Wang
Summary: In this work, heterojunction nanowire arrays consisting of manganese oxide and cobalt phosphide were designed to meet industrial demand. The optimized electrode exhibited remarkable bifunctional electrocatalytic performance, superior durability, and low voltage, highlighting their potential for practical industrial applications.
Article
Engineering, Chemical
Qing Sun, Jingsi Chen, Ziqian Zhao, Diling Yang, Yaoyu Xiao, Hao Zhang, Xin Ma, Hong Zhong, Hongbo Zeng
Summary: In this study, a pH-responsive surfactant was developed, which selectively interacted with different target substances through two pH-switchable functional groups, enabling stepwise and efficient separation of a three-component mineral system.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Correction
Engineering, Multidisciplinary
Diling Yang, Xuwen Peng, Qiongyao Peng, Tao Wang, Chenyu Qiao, Ziqian Zhao, Lu Gong, Yueliang Liu, Hao Zhang, Hongbo Zeng
Article
Chemistry, Physical
Guocai Lv, Wenjuan Qian, Hao Zhang, Ye Su, Ping Qian
Summary: This work systematically investigates the properties of Ti3C2(O2)/Al composites using first-principles calculations. The study shows that the -O functional group enhances the tensile properties of the composites. The Al-O-Ti interlocking structure improves the load transfer capability of AlMCs and thus enhances their mechanical properties.
APPLIED SURFACE SCIENCE
(2024)
Article
Engineering, Chemical
Liyi Zhu, Wensheng Lyu, Xiaohui Mao, Ziqian Zhao, Diling Yang, Hao Zhang, Kun Wang, Peng Yang, Hongbo Zeng
Summary: The effects of polyethylene oxide (PEO) dosage and solution pH on the flocculation, rheological and surface/interfacial properties of the slurry were investigated. The study found that the settling rate of the tailings was lowest in strongly acidic solutions and reached its peak in strongly alkaline solutions. PEO dosage had a modest impact on the yield stress in strong acid solutions, but a notable influence in neutral and strongly alkaline solutions. The adsorption of PEO chains on silica surfaces was enhanced in strong alkaline solutions and partially inhibited in strongly acidic solutions. Surface force measurements showed that PEO chains can bridge the tailings particles, increasing the suspension's yield stress.
Article
Materials Science, Multidisciplinary
Zhixiao Xu, Yue Li, Ge Li, Hao Zhang, Xiaolei Wang
Summary: A reversible Zn powder electrode, fabricated by controlling the growth of zinc crystals in different solvents, shows improved performance and longer lifespan in batteries due to its high orientation of Zn (002) plane.
Article
Engineering, Mechanical
Willy Ank de Morais, Railson Bolsoni Falcao, Mario Boccalini Jr, Fernando Jose Gomes Landgraf
Summary: This study compares the fatigue behavior of bcc Nb-48 wt%Ti (Ti-36at%Nb) alloy parts processed by Laser Powder Bed Fusion (L-PBF) using two different types of powders (spherical powder produced by Plasma Atomization and irregularly shaped powder produced by Hydride-Dehydride). The results show that the fatigue behavior is similar for both powders, but the specimens produced from the Hydride-Dehydride powder have higher dispersed results. Fracture primarily occurs in the porosities near the machined sample surface, and the fatigue cracks propagate in a zigzag mode parallel to the L-PBF building direction.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Guoxi Jing, Shuai Sun, Teng Ma, Shubo Li, Tian Ma, Junchao Wei, Jianchao Pang
Summary: This study proposes a parameter identification method for predicting the TMF life of CGI materials used in cylinder heads. The study evaluates the TMF behavior of RuT450 material and successfully predicts its TMF life using multi-objective optimization. The results highlight the influence of plastic strain amplitude, temperature, and strain rate on the damage mechanism and life prediction.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Xin Zhang, Xu Li, Weipeng Xu, Kuidong Gao, Kao Jiang, Xinyu Wang, Hongxin Wei
Summary: Conical picks are commonly used in tunnel excavation and often experience high temperatures during the cutting process. This study investigated the influence of temperature on the wear of conical picks and proposed a method for measuring rock abrasiveness that takes into account the thermal effect. The experimental results showed that cooling liquid reduced the maximum temperature and the mean mass loss of the conical pick. Additionally, the study examined the characteristics of oxygen and found evidence of peeling, cracking, and oxidation on the grinding rod used for rock abrasiveness measurement.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Vivek Srivastava, Deependra Singh, A. G. Rao, V. P. Deshmukh
Summary: Engine gear failures are a significant concern in various industries. Investigating each gear failure and determining the root cause is important for preventing future failures. This study used experimental and numerical analysis techniques to investigate the premature failure of a flywheel gear in a marine diesel engine. The findings revealed that the gear failed due to overload stresses caused by overload torque generated from sudden inertial thrust in the internal combustionengine.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Jun Zhang, Weidong Liu, Feilong Liu, Zhiqiang Yang, Jinfang Peng, Minhao Zhu
Summary: During a major overhaul of an aeroengine, a cracked stator vane of the low-pressure compressor was discovered, with the crack originating from a corrosion pit located on the arc transition between the leading edge and the upper edge plate. The fracture surface exhibited signs of fatigue cracks, indicating a pit-related fatigue crack. Metallographic examination revealed that most corrosion pits were distributed beneath the bulging or peeling paint layer on the leading edge and the concave side. Identification of the corrosion products showed the presence of sulfate and alumina, suggesting atmospheric corrosion as a likely cause for the cracked stator vane.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Juan Jose Jimenez de Cisneros Fonfria, Ester Olmeda, Susana Sanz, Maria Garrosa, Vicente Diaz
Summary: Energy absorbing devices in vehicles can partially transform impact energy and protect passengers. In this paper, the failure analysis of the underframe crumple zone in a train car was conducted through finite element simulations, showing that the component acted properly after the impact.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Fengqi Zhang, Gang Luo, Haiyang Zhang, Peihong Cong, Lulu Liu, Wei Chen
Summary: In this study, a predictive model for bird strike trajectory was developed based on the quasi-linear viscoelastic model. By combining simulation analysis under multiple conditions, the model reproduced the trajectory change law in low and medium speed bird impact experiments.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
S. M. de Gouveia, L. de Abreu Correa, D. B. Teles, M. Oliveira, T. G. R. Clarke
Summary: Emergency Shutdown Valves (EDSVs) are used in industrial applications to interrupt fluid flow during hazardous events. The damage to the valve seats can be detected by analyzing the pressure and torque data. This study compared three processing options and found that evaluating the complete signature with a Gradient Boosting Classifier algorithm is the most effective strategy.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Xinyan Jin, Kai Wang, Hongwei Qian
Summary: This study investigated the root cause of an abnormal premature groove-clogging failure on a sink roll in a hot-dip galvanizing line. It was found that the failure was caused by the buildup of a large amount of Fe2Al5Znx dross in the grooves, and the key factor was the control of Tstrip.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Zhiqiang Li, Jie Li, Cen Li, Xiaodong Xie, Zhiyong Yang
Summary: In this study, the microstructure evolution of the material in the hot spot area of the high-speed train brake disc was observed and the mechanism of mechanical property degradation was obtained through tensile tests. The research results provide guidance for crack damage identification of the brake disc and condition-based maintenance.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Lijia Luo, Yincheng Wang, Wei Chen, Zuming Zhao, Wenfei Chen, Shiyi Bao
Summary: Tube-to-tube impact wear is a significant factor in the failure of alloy 690 tubes in nuclear steam generators. This paper investigates the wear damage mechanism and detection method of alloy 690 tubes under tube-to-tube impact loads. The results reveal the wear damage mechanism through analysis of macro and micro morphologies as well as metallographic structures. A nonlinear ultrasonic wave mixing method is proposed for damage detection and a detection device is developed to implement this method. Experimental results indicate that the damage mode of tube-to-tube impact wear varies with impact load and cycle number, and the nonlinear modulation index is effective in assessing the damage degree of alloy 690 tubes.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Xing-Ju Yang, Feng Lin, Xu Du, Lu Qiu
Summary: This paper proposes a novel method of improving the progressive collapse resistance of RC frame structures by adding locally debonded kinked steel plates (KPs). Experimental tests and finite element analysis reveal that the addition of KPs significantly enhances the ultimate resistance and deformability of the beam-slab substructures. The mechanism of resistance improvement is explained, and an analytical model is developed for predicting the ultimate resistance of the structures.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Xiaohe Wang, Zengqiang Cao
Summary: This paper presents a dynamic installation (DI) method based on electromagnetic force to reduce damage to composite laminates and improve joint performance. The study shows that DI can effectively decrease installation resistance, reduce severe damage to laminates, and improve stress distribution in the joint.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Jitong Cui, Yingying Kong, Cuiwei Liu, Baoping Cai, Faisal Khan, Yuxing Li
Summary: This paper presents a method for quantifying the failure probability of hydrogen doped pipelines and utilizes Bayesian network for quantitative calculation. The results show that this method can more accurately assess the failure probability of hydrogen doped pipelines and provide a decision basis for preventing failure accidents.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Yiping Jiang, Maoru Chi, Jungang Yang, Liangcheng Dai, Yuchen Xie, Zhaotuan Guo
Summary: This article investigates and simulates the derailment of empty freight trains at the switch section of a turnout in the diverging route, and proposes preventive measures. The results show that the derailment is caused by the combined effect of various factors, and reducing the longitudinal coupler force and the wheel rail friction coefficient can decrease the possibility of derailment. Additionally, installing a guard rail in front of the turnout can effectively prevent derailment.
ENGINEERING FAILURE ANALYSIS
(2024)