Article
Engineering, Mechanical
Can Wang, Kaifa Fan, Chao Li, Magd Abdel Wahab
Summary: This paper studies the effect of shot peening residual stress on the initiation and propagation behavior of fretting fatigue cracks. The authors utilize the Critical Plane (CP) method and the Theory of Critical Distance (TCD) to predict the initiation position and lifetime of cracks, and employ Linear Elastic Fracture Mechanics (LEFM) theory and the Extension Maximum Tangential Stress (EMTS) criterion to investigate crack propagation behavior. The results show that these methods can effectively predict fretting fatigue behavior, and the influence of residual stress in these two stages is also examined.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Mechanical
S. Aguado-Montero, J. Vazquez, C. Navarro, J. Dominguez
Summary: Shot peening is often used to mitigate metal fatigue in engineering components, and its effectiveness depends on various factors. The fatigue improvement is largely influenced by the residual stress profile in the specimen, and this study investigates the optimal shape for fatigue behavior. By analyzing simple and notch fatigue cases, the research aims to determine the best residual stress profile for fatigue damage tolerance design.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2021)
Article
Engineering, Mechanical
Nelson Leguinagoicoa, Joseba Albizuri, Aitor Larranaga
Summary: This study investigates the effect of shot-peening treatment on improving the high-cycle fatigue strength of DIN 34CrNiMo6 steel and analyzes the surface residual stresses under different stress conditions.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Mechanical
Y. Madhavi, L. Rama Krishna, N. Narasaiah
Summary: The study systematically evaluated different thicknesses of MAO coatings, corrosion-fatigue response, and crack propagation features, highlighting the aluminum alloy with a 50 μm thick SP + MAO coating shows better resistance to corrosion-fatigue life.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Engineering, Mechanical
Chih-Hang Su, Tai-Cheng Chen, Leu-Wen Tsay
Summary: The effects of micro-shot peening (MSP) on the rotating bending fatigue resistance of Cr-electroplated AA 7075-T6 Al alloy were studied. MSP significantly increased the fatigue strength/life of 7075-T6 Al alloy with or without Cr-plating. The high resistance to fatigue crack growth of the MSP sample was attributed to the introduction of high residual compressive stress and the formation of a nanograined structure in the MSP zone.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Marine
Qin Dong, Geng Xu, Yaoyu Hu, Ziya Peng
Summary: The main objective of this paper is to investigate the residual strength of a cracked plate considering fatigue crack propagation under cyclic loading. Factors such as crack length, number of cycles, tensile/compressive cyclic loads, and out-of-plane deformation are considered in the study of residual strength. The numerical results provide insight into the effect of crack propagation on structural residual strength, aiming to guide the evaluation of residual strength in cracked components.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Mechanical
A. L. Pinto, J. A. Araujo, R. Talemi
Summary: This paper proposes a new methodology for fretting fatigue life assessment, combining multiaxial fatigue criteria, theory of critical distances, and a node-displacement wear algorithm. Validation using available data showed a total life estimation error between 11% and -39%, emphasizing the importance of including wear in the modeling for accurate results.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Engineering, Mechanical
Xiushuo Zhang, Yu'e Ma, Yilin Peng, Meng Yang, Yong Du, Zhenhai Wang
Summary: The study investigated the effects of residual stress on mixed-mode crack propagation behavior of 7075-T6 aluminum alloy panel subject to multiple laser shock peening (LSP) impacts. It was found that residual stress can change the crack path and delay the crack propagation. Additionally, increasing the LSP coverage area and reducing the distance from the treated area to the crack tip can improve fatigue performance.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2022)
Article
Mechanics
Songbai Li, Wei Liang, Hongzhi Yan, Yuhang Wang, Chu Gu
Summary: In this paper, the effect of load ratio on the fatigue life of AA2524 after laser shot peening was thoroughly studied. A novel method considering compressive residual stress was proposed to predict crack growth life, and the artificial neural network model was found to be more accurate in predicting fatigue crack growth behavior.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Engineering, Mechanical
Sabrina Vantadori, Andrea Zanichelli
Summary: This paper evaluates the fatigue life of shot-peened aluminum and titanium alloy specimens under partial slip regime, and proposes a novel theoretical law for relaxed residual stress field description. The results show promising outcomes in estimating fretting fatigue life of the shot-peened specimens examined.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2021)
Article
Engineering, Mechanical
Zhiqiang Zhou, Xiaoshan Liu, Guoqiu He, Yiping Liao, Yinfu Liu, Zhe Li, Qigui Wang
Summary: This paper experimentally evaluates the fretting fatigue properties of cast Al-Si-Cu-T6 alloys against nodular cast irons with two surface roughnesses. A softening phenomenon contrary to the cyclic response behavior of plain cyclic loading is pointed out and discovered to be affected by persistent damage and cumulative plastic deformation. The initiation and propagation of cracks are not only affected by fretting wear damage but also significantly depend on the microstructure, especially the α-Fe and (β+ω) phases play key roles. The realization of this research comprehensively reveals the fretting damage mechanism of Al-Si cast alloys under two characteristic contact surface states, which serves the fretting failure analysis of aluminum castings in the automotive industry.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Mechanical
A. L. Pinto, R. Talemi, J. A. Araujo
Summary: This study presents a methodology for assessing fretting fatigue life that takes into account wear effects and crack propagation. The damage is computed using the multiaxial fatigue parameter SWT and the theory of critical distance TCD, wear effects are accounted for using the node-displacement algorithm, and crack modeling is done using the XFEM method. The methodology was evaluated using fretting fatigue experiments conducted on a cylinder-on-flat contact configuration made of Al 2024-T351 alloy. In the medium-cycle fatigue regime, the critical distance is assumed to depend on the fatigue life. All fatigue life estimates using TCD as a function of life were within a factor-of-two range.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Mechanical
Can Wang, Kyvia Pereira, Dagang Wang, Aleksandr Zinovev, Dmitry Terentyev, Magd Abdel Wahab
Summary: In this paper, a numerical crack growth analysis is conducted using the MTS criterion and its extension, taking into account the contact stress between the crack surfaces. The focus is mainly on the influence of loading phase difference (f) on crack propagation behavior in fretting fatigue. The effect of initiation characteristics, including crack initiation position and direction, is studied using LEFM theory, and it is found that the predicted crack path and lifetime match well with experimental results.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Xiushuo Zhang, Yu'e. Ma, Zhenhai Wang, Yanning Guo
Summary: Residual stress has a considerable effect on mixed-mode crack propagation behavior under biaxial loading conditions, especially influencing crack deviation in the early stage of propagation. The variation of crack path is strongly linked with residual stress and biaxial loading ratio.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2021)
Article
Engineering, Mechanical
Yating Zhang, Kun Zhang, Zheng Hu, Tianyu Chen, Luca Susmel, Bingchen Wei
Summary: The synergetic effect of shot peening and laser shot peening on the fatigue behavior of a medium carbon steel was studied. The fatigue performance of the SP + LSP specimen was found to be improved only at lower stress levels, which is consistent with the observed short crack propagation behavior near the threshold region. The heterogeneous structures of ultra-fine grains, dislocation tangles, and high-angle grain boundaries were responsible for effectively retarding the short crack propagation.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Mechanics
S. S. Jafari, G. H. Majzoobi, E. Khademi, M. Kashfi
ENGINEERING FRACTURE MECHANICS
(2019)
Article
Engineering, Mechanical
Kaveh Minaii, Gholam Hossein Farrahi, Morad Karimpour, Hamid Bahai, Gholam Hossein Majzoobi
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2019)
Article
Mechanics
M. Kashfi, G. H. Majzoobi, N. Bonora, G. Iannitti, A. Ruggiero, E. Khademi
ENGINEERING FRACTURE MECHANICS
(2019)
Article
Materials Science, Composites
H. Malek-Mohammadi, G. H. Majzoobi, J. Payandehpeyman
POLYMER COMPOSITES
(2019)
Article
Materials Science, Multidisciplinary
G. H. Majzoobi, S. H. Amini Nejadi, S. A. R. Sabet
MATERIALS RESEARCH EXPRESS
(2019)
Article
Materials Science, Composites
Gholam H. Majzoobi, H. Malek-Mohammadi, J. Payandehpeyman
JOURNAL OF COMPOSITE MATERIALS
(2019)
Article
Polymer Science
S. Amini Nejad, G. H. Majzoobi, S. A. R. Sabet
IRANIAN POLYMER JOURNAL
(2019)
Article
Engineering, Multidisciplinary
G. H. Majzoobi, K. Rahmani, S. Lahmi
Article
Materials Science, Composites
K. Rahmani, G. H. Majzoobi
JOURNAL OF COMPOSITE MATERIALS
(2020)
Article
Chemistry, Analytical
Diego Infante-Garcia, Miguel Marco, Alaitz Zabala, Farshad Abbasi, Eugenio Giner, Inigo Llavori
Article
Materials Science, Multidisciplinary
S. S. Jafari, G. H. Majzoobi
Summary: The study demonstrated significant effects of TiO2 particle size, loading rate, and temperature on the mechanical properties of Cu/TiO2 composites, with nano-sized reinforcement particles showing a more profound impact on the damage parameter. A new damage model incorporating various factors on the damage parameter was proposed, with results showing that the method utilizing relative density and elasticity modulus was more accurate.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Materials Science, Multidisciplinary
G. H. Majzoobi, S. S. Jafari, K. Rahmani
Summary: This paper investigates the damage evolution of Copper/Titanium Dioxide composite, fabricated by powder metallurgy, based on Young modulus reduction. Different volume fractions of TiO2 nano and micro particles were used to reinforce the Cu matrix using mechanical milling, cold pressing at different loading rates, and hot extrusion process. The effects of strain rate and particle size on damage evolution were studied. The results showed that the Quasi-Static method was more efficient and several parameters such as strain rate, plastic strain, fracture strain, volume fraction of reinforcement particles, and particles aspect ratio were found to affect the damage evolution. A new model was proposed to predict the damage evolution of Metal Matrix Composite (MMC) and validated with experimental results.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Biomedical
G. H. Majzoobi, M. Mohammadi, K. Rahmani
Summary: Functionally graded materials (FGMs) are heterogeneous composite materials with continuous changes in microstructure and adjustable properties, commonly used in medical applications for their excellent mechanical and tribological properties. In this study, Ti/HA and Ti/SiO2 FGM samples were produced using the powder metallurgy method (PMM). The effect of strain rate on mechanical properties and microstructure was investigated, showing that an increase in strain rate led to an increase in relative density and mechanical properties of the specimens, with Ti/HA samples achieving the highest relative density when produced using the split Hopkinson bar.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
S. Sulaiman, J. Nemati, G. H. Majzoobi, M. AlJermi
ADVANCES IN MATERIALS AND PROCESSING TECHNOLOGIES
(2019)
Article
Engineering, Multidisciplinary
G. H. Majzoobi, M. H. Ghaed Rahmati, M. Kashfi
INTERNATIONAL JOURNAL OF ENGINEERING
(2019)
Article
Materials Science, Coatings & Films
Yanchun Xie, Xiaodong Wang, Shenshen Cui, Jiali Hu, Yongcun Wei, Yi Lian, Anwu Xuan, Bin Yu, Erlin Zhang
Summary: In this study, Ti-xFe (x = 3,5,9 wt%) alloys were surface modified by micro-arc oxidation (MAO) to improve their antimicrobial properties and biocompatibility. The results showed that increasing the oxidation voltage greatly enhanced the roughness and hydrophilicity of Ti-xFe-MAO alloys. The Ti-xFe alloys micro-arc oxidized at 250 V and 300 V exhibited improved corrosion resistance and excellent antimicrobial and cytocompatibility properties, making them suitable for orthopedic implant materials.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuting Hao, Zuoyan Ye, Lili Wang, Minheng Ye, Hui Dong, Chao Wang, Yunchen Du
Summary: This study focuses on the modification of PEO coatings on Ta-12W alloy using NH4F additive. The results show that ultra-low porosity coatings can be prepared by optimizing the NH4F content. The formation process of specific structures on the coating surface is discussed, and the effects of NH4F concentration and treatment duration on coating characteristics are investigated.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuanzhuo Liu, Linjiang Chai, Tao Yang, Chaodan Hu, Chuanmei Wang, Guoqiang Xi
Summary: By employing a pulsed laser, laser cladding was performed on IN718 alloy pre-coated with CrCoNi-TiC/SiC powders and three defect-free coatings were successfully prepared. The addition of TiC and SiC powders generated fine carbides dispersed in the coatings and led to changes in grain and substructure morphologies, resulting in increased hardness and wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
M. Ghaemi, A. Lopez-Cazalilla, K. Sarakinos, G. J. Rosaz, C. P. A. Carlos, S. Leith, S. Calatroni, M. Himmerlich, F. Djurabekova
Summary: The use of high-power impulse magnetron sputtering can result in dense and uniform niobium films on all surfaces of superconducting rf cavities, as simulated and investigated in this study.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Jiaheng Du, Xinli Fan, Dongqin Xiao, Wuxiang Wang, Yiran Yin, Zhong Li, Kui He, Yanfei Tan, Jiyuan Yan, Gangli Liu, Ke Duan
Summary: This study investigated the electrophoretic deposition (EPD) of magnesium oxide (MgO) coatings on micro-arc oxidized titanium (MAO-Ti) and evaluated their in vitro antibacterial properties and biocompatibility. The results showed that MgO coatings significantly reduced bacterial numbers and biofilm formation, while also demonstrating good cytocompatibility and induction of osteoblast mineralization.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Samiksha Moharana, Yuichi Otsuka, R. Gnanamoorthy
Summary: The addition of titania to HAp coatings improves their wear resistance and reduces damage to titanium implants caused by debris generation. This study evaluates the fretting wear resistance of titania-added HAp suspension plasma spray coating and finds that it exhibits reduced friction coefficient and increased wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Li-Ping Wu
Summary: The functional hazenite coating deposited on AZ31 Mg alloy showed improved roughness and hydrophilicity, enhanced biocompatibility, reduced degradation rate, and decreased susceptibility to stress corrosion cracking.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Ning Tian, Delei Xu, Jinfei Wei, Bucheng Li, Junping Zhang
Summary: This study reports the preparation of a superhydrophobic and anti-bacterial fabric for face masks. The fabric exhibits high superhydrophobicity and excellent moisture resistance, enabling functionality effectiveness in cold weather conditions. The fabric also demonstrates remarkable anti-bacterial activity against E. coli, attributed to the synergistic effect of superhydrophobicity and embedded ZnO nanoparticles. This superhydrophobic anti-bacterial fabric holds great potential for various practical applications in personal protective equipment, healthcare, and disease prevention.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Katharina Beck, Anke S. Ulrich, Andreas K. Czerny, Emma M. H. White, Martin Heilmaier, Mathias C. Galetz
Summary: Refractory metal based alloys have great potential as structural materials for high-temperature applications due to their high melting points. However, they are prone to catastrophic oxidation at around 700 degrees C. This study investigated the effect of aluminium diffusion coatings on the oxidation resistance of pure molybdenum, niobium, tantalum, and tungsten. The results showed that the aluminization improved the oxidation behavior and decreased the oxide growth rate for molybdenum and tantalum.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Wenwen Shuai, Haijun Dou, Zhichen Guan, Wei Qian, Zhibao Li, Yinqun Hua, Jie Cai
Summary: This study synthesized (Y1-xLax)3Al5O12 (x = 0, 0.1, 0.2, 0.3) materials by doping lanthanum ions, and found that the doped materials exhibited improved mechanical properties and thermal expansion coefficient, as well as enhanced resistance to CMAS corrosion. These materials have potential applications.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Xianglei Liu, Jiahui Ding, Wanbo Hou, Xinhao Shi, Tao Feng, Xiangyuan Meng, Shifeng Wen, Mingde Tong, Zhufeng Yue
Summary: A composite coating was developed to improve the adhesion, wear resistance, and corrosion resistance, which exhibited significant enhancements in these properties.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hongxuan Xing, Jidong Li, Xianwei Hu, Liang Tian, Renyun Zhang, Yiyong Wang
Summary: By depositing a Cu/Co-Mo corrosion-resistant plating layer on the surface of 6061 Al alloy, the bonding strength between the alloy and the plating layer can be improved and the corrosion resistance can be enhanced. The composite coating forms an obvious three-layer structure with Co-Mo coating exhibiting amorphous characteristics and Co3Mo phase composition. The composite coating improves the corrosion resistance and hardness of the substrate, effectively protecting the 6061 Al alloy.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Fan Yang, Debin Wang, Tianrun Li, Baijun Yang, Suode Zhang, Jianqiang Wang
Summary: The impact-corrosion behavior of monolayer and hierarchical Fe-based amorphous coatings fabricated by HVAF was investigated in 3.5 wt% NaCl solution. The monolayer coating exhibits corrosion failure with increased impact energy, while the hierarchical coating shows improved resistance. However, at high impact energies, both coatings experience corrosion degradation.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Shoaib Ahmad, Muddasir Nawaz, Solaiman Mohammad, R. A. Shakoor, Ramazan Kahraman, Talal Mohammed Al Tahtamouni
Summary: This research presents a novel self-healing anti-corrosion composite coating that demonstrates higher inhibition efficiency and self-healing effect, providing protection for metallic structures against corrosive environments.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hui-Wen Peng, Chun-Hway Hsueh
Summary: A series of (CoCrNi)100-x-ySixNdy medium entropy alloy films with manipulated metalloid element, Si, and rare earth element, Nd, were synthesized using magnetron three-target co-sputtering. The films showed different structures and mechanical properties with varying Si and Nd contents. The optimized mechanical properties were observed in the film with Si0.61Nd5.14, attributed to precipitation strengthening and grain refinement.
SURFACE & COATINGS TECHNOLOGY
(2024)
