Article
Engineering, Geological
Kai Zhao, Hongling Ma, Chunhe Yang, Xiangsheng Chen, Yibiao Liu, Xiaopeng Liang, Rui Cai
Summary: Research shows that the deformation of rock salt under creep-fatigue loading consists of initial, steady, and accelerated phases. The proposed damage accumulation model matches well with test data and accurately describes the evolution of damage as stress amplitudes and dwell times change.
ROCK MECHANICS AND ROCK ENGINEERING
(2021)
Article
Engineering, Geological
D. Grgic, F. Al Sahyouni, F. Golfier, M. Moumni, L. Schoumacker
Summary: Laboratory experiments on rock salt specimens revealed that gas permeability evolution under different loading conditions is influenced by various factors, such as microcracking and self-recovery processes. These findings provide strong support for underground hydrogen storage in salt caverns as a safe solution due to competitive mechanisms that inhibit significant permeability changes.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Materials Science, Characterization & Testing
Yuka Kojima, Hidehiko Kimura, Daigo Setoyama, Michiaki Kamiyama, Takayuki Hirai, Taiki Kano
Summary: In this study, non-destructive throughthickness measurements were conducted to investigate the internal fatigue damage behavior in fiber-reinforced plastics. It was found that under fatigue loading, voids and delaminations were nucleated near the notch tip, and the damaged zone extended with incremental fatigue cycles. Furthermore, the damage zone was larger near the surfaces in plane-stress condition than inside the specimen in plane-strain condition.
Article
Computer Science, Interdisciplinary Applications
Kai Zhao, Chunhe Yang, Hongling Ma, J. J. K. Daemen
Summary: A new creep-fatigue model for rock salt was proposed and validated through tests and simulations. Additionally, a three-dimensional geotechnical model was developed to analyze the deformation of CAES salt caverns during operation.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Engineering, Geological
Junbao Wang, Qiang Zhang, Zhanping Song, Xinrong Liu, Xiaopeng Wang, Yuwei Zhang
Summary: This study conducted fatigue tests on salt rock specimens under different maximum cycling stresses to investigate the microstructural variations and damage evolution of salt rock under cyclic loading. The results showed that the pore radii varied with an increase in the number of cycles, and the porosity and permeability of the salt rock exhibited two-stage changes. The damage evolution process of the salt rock specimens consisted of three stages, with significant damage occurring near failure.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2022)
Article
Materials Science, Multidisciplinary
Zhengkai Wu, Shengchuan Wu, Wentao He, Fandong Meng, Long Wang, Feifan Wang, Chuantao Hou, Guoqing Wang
Summary: This paper investigates the tensile and fatigue damage behaviors of arc-welded AA2219 joints. The main factors affecting fatigue damage behavior are discussed based on microstructure observation and fracture analysis. The results reveal the presence of porosity defects in the weld zone and highlight the softening zone of the welded joint.
MATERIALS CHARACTERIZATION
(2023)
Article
Energy & Fuels
Kai Zhao, Haoran Li, Hongling Ma, Haibing Yu, Hang Li, Zhen Zeng, Zhuyan Zheng, Xiangsheng Chen, Chunhe Yang
Summary: In this study, the behavior of salt subjected to creep-fatigue load was tested and analyzed. The results showed a negative and positive interaction between creep and fatigue load, respectively. Prior creep or fatigue load affected the strain rate and loading modulus in subsequent stages.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Geological
Zongze Li, Jinjie Suo, Jinyang Fan, Marion Fourmeau, Deyi Jiang, Daniel Nelias
Summary: The use of salt caverns for constructing CAES plants is a significant development for green mining strategy in China and achieving global carbon neutrality. Understanding the mechanical behavior of rock salts is crucial for ensuring the stability of the caverns. Uniaxial and triaxial graded creep-fatigue tests were conducted on rock salt under representative conditions, considering the actual operating gas pressure of the CAES plant. The findings from the tests provide important insights into the longterm stability of salt caverns in CAES.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2023)
Article
Engineering, Geological
Xianda Shen, Jihui Ding, Chloe Arson, Judith S. Chester, Frederick M. Chester
Summary: This study reveals the rate-dependent behavior of salt rock under low pressure and low temperature, which is governed by water-assisted diffusion along grain boundaries. A chemo-mechanical homogenization framework is proposed to explain the mechanisms behind the accumulation of irreversible deformation and reduction of stiffness in salt rock. Thinner sliding cracks enhance stiffness reduction and hysteresis, while a larger volume fraction of crack inclusions leads to larger REV deformation and hysteresis.
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2021)
Article
Energy & Fuels
Hao Lin, Jianfeng Liu, Jianxiong Yang, Lina Ran, Guosheng Ding, Zhide Wu, Cheng Lyu, Yu Bian
Summary: The gas injection, water-soluble excavation, and gas recovery process in the gas storage salt cavern can be studied by conducting triaxial loading and unloading tests on salt rock samples. Several findings are presented, including the influence of confining pressure on the failure mode of rock samples, the stress loss during the unloading-reloading process, the variation of dissipative energy difference with increasing strain, and the effect of confining pressure on the initial damage degree of the samples.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Wenjing Li, Xing Nan, Jiasong Chen, Chunhe Yang
Summary: This study employs a viscoelastic model to describe the temperature-dependent creep behavior of rock salt, establishes a thermal-mechanical simulation framework, and proposes a coupled thermal-mechanical numerical model implemented by FLAC3D. Through a field case study in Jintan, China, it is found that the thermal-induced tensile stresses are critical for salt cavern stability assessment.
Article
Mechanics
Kai Zhao, Hongling Ma, Yinping Li, Peng Li, Zhikai Dong, Xin Liu, Hongwu Yin, Chunhe Yang, Xiangsheng Chen
Summary: This study conducted multilevel cyclic loading tests on rock salt to investigate the deformation and damage evolution. The results showed that deformation generally increased with loading stress levels, and the damage variable gradually increased with the loading level. The damage accumulation at each loading level generally exhibited two stages of rapid increase followed by stable increase.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Engineering, Geological
Tao He, Tongtao Wang, Baodong Shan, Guoyin An, Jie Yang, J. J. K. Daemen
Summary: This paper investigates the fatigue damage of the wellbore cement sheath under different cyclic loading conditions and develops a damage evolution model considering both tension and compression fatigue damage. The damage theory is verified through tests and numerical modeling, showing the damage characteristics and providing gas storage operating parameters that meet the requirements of high injection-production efficiency and long service life.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Engineering, Mechanical
Licheng Guo, Jinzhao Huang, Li Zhang, Xinyang Sun
Summary: A method combining mechanical testing, infrared thermography (IRT) and synchrotron radiation computed tomography (SRCT) is proposed for studying the damage evolution of 3D woven carbon/epoxy composites under tension-tension (T-T) fatigue loading. Fatigue tests and detection revealed the initiation, distribution, and development of cracks with increasing fatigue cycles, as well as discussed the effects of fiber yarn undulation and twist during the manufacturing process.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Engineering, Geological
Kai Zhao, Hongling Ma, Jun Zhou, Hongwu Yin, Peng Li, Ahu Zhao, Xilin Shi, Chunhe Yang
Summary: This study investigates the effect of high-stress intervals (HSIs) on the fatigue of rock salt in a compressed air energy storage system. The results show that HSIs contribute to changes in stress-strain curves and fatigue performance.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Yunlong Zou, Bo Peng, Rong Liu, Jinyang Fan
Summary: In this study, a multi-physics coal and gas outburst experimental apparatus was developed and tested for its performance. The research focused on studying the damage characteristics and outburst occurrence of raw coal under different gas pressures, providing a more comprehensive theoretical basis for coal and gas outburst research. The degree of fragmentation of coal samples and the mass proportion distributions of the outburst pulverized coal after outbursts were analyzed under different gas pressures, serving as a reference for exploring the evolutionary characteristics of coal and gas outburst with gas-driven action.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Thermodynamics
Xiong Zhang, Wei Liu, Jie Chen, Deyi Jiang, Jinyang Fan, J. J. K. Daemen, Weibiao Qiao
Summary: This study proposes a new carbon cycle model for carbon capture and storage based on the disposal/storage of carbon dioxide (CO2) in salt caverns. The safety and suitability evaluation of CO2 disposal/storage in bedded rock salt caverns in China was carried out. The results show that long-term and medium-term disposal/storage can achieve permanent geological isolation at proper depth and operating pressure, while short-term storage can be achieved by controlling the operating pressure.
Article
Energy & Fuels
Deyi Jiang, Yifan Wang, Wei Liu, Lin Li, Weibiao Qiao, Jie Chen, Depeng Li, Zhengyi Li, Jinyang Fan
Summary: In recent years, the single well or small-spacing two-well technologies have been applied to construct salt cavern storage to solve the problems in salt cavern construction. This study proposes a large-spacing two-well with gas blanket method and verifies its feasibility and stability through experiments and simulations. The working conditions for gas storage are optimized based on the research results.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Geosciences, Multidisciplinary
Huangqing Zhang, Rong Liu, Junwei Chun, Quanwen Xue, Jinyang Fan
Summary: Coal dust pollution in fully mechanized excavation not only affects the safety production of coal mine but also threatens worker's health. The layout and position of dedusting-air duct in dry dust collector were studied to reduce coal dust pollution and improve work conditions in mines. Furthermore, the effects of different cutting positions and the distance between the tunneling head and the dedusting air duct on dust removal efficiency were also investigated.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Fujin Lin, Guangli Huang, Deyi Jiang, Yi He, Jinyang Fan
Summary: In this study, coal specimens were subjected to permeability tests using a rock servo triaxial test system under different confining pressure and osmotic pressure. The results showed that coal permeability had a small fluctuation before the stress peak and increased substantially after the peak. The relationship between the plastic damage variable of coal and the equivalent plastic strain was proposed.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Engineering, Environmental
Zongze Li, Fan Yang, Jinyang Fan, Deyi Jiang, Julien Ambre
Summary: The presence of low-stress time intervals accelerates the accumulation of residual deformation in the surrounding rock of a compressed air energy storage tunnel. Sandstone fatigue life is reduced in discontinuous fatigue tests compared to traditional fatigue tests. The proportion of residual strain between cycles is a negative exponential function of the time interval duration, indicating a significant influence on the mechanical response.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2022)
Article
Computer Science, Interdisciplinary Applications
Alexandre I. Chemenda, Riad Hassani, Jinyang Fan
Summary: Investigated the process of rock fracture, revealing that fractures initiate in the more brittle central layer and start with initially distributed inelastic straining, which then localizes into narrow bands and accelerates the damage resulting in complete material failure locally.
COMPUTERS AND GEOTECHNICS
(2022)
Article
Engineering, Geological
Zongze Li, Zhenyu Yang, Jinyang Fan, Marion Fourmeau, Deyi Jiang, Daniel Nelias
Summary: The study found that the cyclic load has a positive effect on creep of salt rock, but there is a threshold value of plateau time, and minimal creep deformation is observed at a plateau time of 15 min. The residual strain before the plateau in A cycle is greater than that after the plateau in B cycle, and the difference between the residual strain before and after the plateau is positively correlated with the plateau time. The fatigue life of the salt rock specimens decreases, and their creep life increases as the high stress plateau time increases.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Energy & Fuels
Depeng Li, Wei Liu, Xiaoshuang Li, Haijun Tang, Guichun Xu, Deyi Jiang, Jinwu Du, Xiong Zhang, Jinyang Fan
Summary: This study conducted experimental and theoretical research on the physical simulation of salt cavern construction with light brine under gas blanket. The results show that using light brine and gas blanket can reduce costs and improve environmental protection. This research provides a basis for promoting clean and efficient brine mining and salt cavern energy storage.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Yifan Wang, Xiong Zhang, Deyi Jiang, Wei Liu, Jifang Wan, Zhengyi Li, Jinyang Fan, Weihao Wang
Summary: Based on the application of the two-well-vertical method in China, this study conducted numerical simulation research on the influence of roof shape and working conditions on the stability of salt caverns. The optimized design parameters and economic analysis showed that using the two-well-vertical method to construct salt caverns in China is feasible.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Engineering, Geological
Zongze Li, Jinjie Suo, Jinyang Fan, Marion Fourmeau, Deyi Jiang, Daniel Nelias
Summary: The use of salt caverns for constructing CAES plants is a significant development for green mining strategy in China and achieving global carbon neutrality. Understanding the mechanical behavior of rock salts is crucial for ensuring the stability of the caverns. Uniaxial and triaxial graded creep-fatigue tests were conducted on rock salt under representative conditions, considering the actual operating gas pressure of the CAES plant. The findings from the tests provide important insights into the longterm stability of salt caverns in CAES.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2023)
Article
Environmental Sciences
Rong Liu, Deyi Jiang, Jie Chen, Song Ren, Jinyang Fan, Yi He
Summary: The unique linear shape of spiral tunnels alters the air flow structure and distribution of blasting dust during construction. Understanding the mechanisms of dust diffusion and distribution provides a theoretical foundation for ventilation design and dust removal in spiral tunnel construction. Experimental and numerical models were used to study the influence of spiral shape on dust diffusion and concentration distribution after tunnel blasting. The resulting dust distribution model allows for optimized ventilation layout and dust removal measures to minimize heavily polluted areas and improve dust removal efficiency.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Geological
Jiang De-yi, Guo Peng-yu, Fan Jin-yang, Chen Bo, Chen Jie
Summary: The properties of sandstone change after high temperature treatment, and different heating rates have varying effects on its physical and mechanical properties.
ROCK AND SOIL MECHANICS
(2022)
Article
Materials Science, Multidisciplinary
Jianxun Wu, Zhenkun Hou, Liang Chen, Xidong Du, Jinyang Fan, Xiaobin Xu, Cynthia Sun
Summary: This study investigates the swelling evolution process of anhydrite rock through model tests and establishes a corresponding constitutive model and performance functions. The reliability analysis of tunnels subjected to anhydrite swelling is conducted using a calculation framework, and the influence of groundwater distribution on reliability is discussed.
INTERNATIONAL JOURNAL OF MATERIALS & PRODUCT TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Miloslav Kepka, Miloslav Kepka Jr, Radovan Minich
Summary: This paper focuses on the fatigue life evaluation of the bodywork of a new articulated electric (battery) bus. The findings resulted in recommendations to improve the operational reliability of a particular vehicle and provided challenges for future research.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
T. Dusautoir, B. Berthel, S. Fouvry, P. Matzen, K-D. Meck
Summary: This study investigates the impact of post-processing treatments on the fatigue limit of additive manufactured Ti-6Al-4V under stress gradients, with a focus on surface integrity.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Zhuofan Xia, Di Wu, Xiaochen Zhang, Jianqiu Wang, En -Hou Han
Summary: The study reveals the surface-initiated rolling contact fatigue (RCF) failure mechanism under heavy load and initial high roughness surface. The results indicate that precursor of collapsed morphology and nanocrystalline layer are the main factors causing lower RCF life with high roughness compared to low roughness surfaces. The spalling failure initiating from low roughness surface under heavy load is strongly dependent on surface plastic deformation.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Daniel Gren, Knut Andreas Meyer
Summary: Rolling contact loading can cause plastic deformation and fatigue cracks. Current rail standards do not consider the effect of plasticity on mechanical behavior. This study proposes a new method for evaluating the fatigue life of deformed material and finds that superimposed compressive axial loads can increase fatigue life.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
R. Kumar, S. Sanyal, J. Bhagyaraj, E. Hari Krishna, S. Mukherjee, K. Prasad, S. Mandal
Summary: This study investigates the thermomechanical fatigue (TMF) behavior of Timetal 834 alloy under different loading conditions. The results show that the alloy exhibits different cyclic hardening and softening responses at different strain amplitudes. The strain amplitude and phase angle have significant effects on the TMF life.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Kai Donnerbauer, Tobias Bill, Peter Starke, Ruth Acosta, Bharath Yerrapa, Christian Boller, Klaus Heckmann, Frank Walther
Summary: Given the aging of nuclear power plants, it is important to develop methods for evaluating the integrity of components and structures in nuclear engineering. Suitable nondestructive testing methods can detect material degradation and determine its fatigue life. This study utilized various NDT parameters and scanning electron microscopic methods to explore the relationship between microstructure evolution and NDT data.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Liuyong He, Jiang Zheng, Tianjiao Li, Houkun Zhou, Lihong Xia, Bin Jiang
Summary: This study quantitatively analyzed the effects of precipitates on the deformation mode, cracking mode, and mechanical behavior of WE54 magnesium alloy during low-cycle fatigue. It was found that precipitates promoted the activation of dislocation slip and suppressed the activation of twinning, affecting the cracking mode and mechanical behavior.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Xiangkang Zeng, Conghui Zhang, Wenguang Zhu, Mingliang Zhu, Tongguang Zhai, Xiaomei He, Kangkai Song, Zhuohang Xie
Summary: The cyclic deformation behaviors and damage mechanisms of pure Zr were investigated. The cyclic stress response was mainly influenced by substructure evolutions. Prismatic < a > dislocation slip was identified as the dominant deformation mechanism. Fatigue damage was not only influenced by the initial texture, but also other factors.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Jingyu Yang, Bingbing Li, Yiming Zheng, Gang Chen, Xu Chen
Summary: Heat treatment is used to improve the low-cycle fatigue performance of additive manufactured 316LN stainless steel. The heat-treated material demonstrates initially cyclic hardening followed by softening behavior, and shows a stronger resistance to crack propagation compared to the as-built material, resulting in a longer fatigue life.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Lang Zou, Dongfang Zeng, Xiong Chen, Jun Li, Hai Zhao, Liantao Lu
Summary: This study investigates the competitive relationship between fretting fatigue and plain fatigue in press-fitted railway axles. By changing the depth of the stress relief groove, the plain fatigue limit and fretting fatigue strength were tested. Detailed information was gathered, and an evaluation methodology integrating finite element simulation and the Modified Wohler Curve Method was established. The study concludes that the optimal groove depth, which balances the anti-fatigue capabilities, depends on the number of test cycles.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Davide Leonetti, Koji Kinoshita, Yukina Takai, Alain Nussbaumer
Summary: This paper investigates the fatigue behavior of non-load-carrying transverse welded steel attachments, including fatigue crack monitoring and fracture surface analysis under constant and variable amplitude loading. A procedure is proposed to obtain a Markov transition matrix based on the measured strain signal and to randomly resample the stress history for variable amplitude fatigue tests.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Zhe Zhang, Bing Yang, Yuedong Wang, Shoune Xiao
Summary: This paper presents a method for designing fatigue life prediction models with small sample sizes by handling limited sample data. The method integrates the equivalent structural stress method with the maximum likelihood estimation method and adds reliability verification, resulting in enhanced goodness of fit, stability, and optimized sample quantity.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Cooper K. Hansen, Gary F. Whelan, Jacob D. Hochhalter
Summary: This paper presents a method to address the computational demand issue of computing FIPs using CPFEM by developing an interpretable machine learning model. Genetic programming is used to evolve interpretable expressions of FIPs from microstructure features, and these models can serve as efficient substitutes for CPFEM and be easily integrated into engineering workflows.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Luca Susmel
Summary: This paper discusses the problem of estimating notch fatigue limits using machine learning. The results show that machine learning is a promising approach for designing notched components against fatigue. The accuracy in estimating the fatigue limit can be increased by increasing the size and quality of the calibration dataset, as well as including additional input features.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Kefeng Gao, Guoqi Tan, Yanyan Liu, Qiang Wang, Qian Tang, Xuegang Wang, Qiqiang Duan, Zengqian Liu, Zhe Yi, Zhefeng Zhang
Summary: Bioinspired architectures have significant effects on material enhancement. This study investigates the fatigue properties of bioinspired ceramic-polymer composites and natural nacre, revealing the close relationship between architectural types, orientations, fatigue performance, and damage mechanisms.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
