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Creep-fatigue interaction of soft adhesive under shear loading: Damage diagram and life prediction model Int. J. Fatigue (IF 5.7) Pub Date : 2024-07-07 Yan Xia, Chengbin Yao, Zheyu Li, Zhuoran Yang, Han Jiang, Zhongmeng Zhu
Soft adhesives used in cutting-edge technological fields are susceptible to shear fatigue failure under complex in-plane loadings. Although the interaction or coupling effect between creep and fatigue damage have been studied, the effect of the equivalent creep damage during typical fatigue loading on the fatigue life of soft adhesives, as well as the interaction between the equivalent creep damage
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A physics-informed neural network approach for predicting fatigue life of SLM 316L stainless steel based on defect features Int. J. Fatigue (IF 5.7) Pub Date : 2024-07-06 Feng Feng, Tao Zhu, Bing Yang, Shuwei Zhou, Shoune Xiao
Defects in additively manufactured materials severely limit the performance of parts in practical applications, often exposing them to the risk of fatigue failure. In order to improve the reliability and performance of additively manufactured parts, it becomes crucial to accurately predict the fatigue life of the material. Although traditional semi-empirical formulas can assess the effect of defects
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Heterogeneity induced fracture characterization of concrete under fatigue loading using digital image correlation and acoustic emission techniques Int. J. Fatigue (IF 5.7) Pub Date : 2024-07-03 Sandeep Dubey, Bineet Kumar, Sonalisa Ray
Understanding the fatigue failure mechanisms in concrete is complex and remains an area of ongoing investigation. Material heterogeneity, along with the size effect, plays a significant role in specifying the crack propagation behaviour and fatigue life in case of repetitive loading conditions. In this study, the influence of material heterogeneity on the fatigue behaviour of concrete has been examined
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Low-cycle fatigue property of Inconel 617 alloy at 700 °C: Mechanisms of cyclic deformation, precipitation and cracking behavior Int. J. Fatigue (IF 5.7) Pub Date : 2024-07-03 Qingtong Wang, Jingtai Yu, Bingbing Li, Jingyu Yang, Yan Li, Xu Chen
Effects of strain amplitude ranging from 0.2 % to 1.0 % on the low-cycle fatigue properties of Inconel 617 alloy at 700 °C were studied. Much attention was paid to reveal the physical mechanisms of the cyclic deformation, phase precipitate and cracking behaviors based on the methods of flow stress partitioning and microstructure evolution characterization. Results showed that the material demonstrated
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Fatigue driving force of riveted shear joints in bridges — Replacing the net section stress Int. J. Fatigue (IF 5.7) Pub Date : 2024-07-02 Johan Maljaars, Sjoerd Hengeveld, Jorrit Rodenburg
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Fatigue behavior of polymethyl methacrylate/acrylonitrile butadiene styrene blends including blend composition, stress ratio, frequency, and holding pressure effects Int. J. Fatigue (IF 5.7) Pub Date : 2024-07-01 Hamdi Kuleyin, Recep Gümrük, Samet Çalışkan
In engineering applications, polymer materials are expected to exhibit superior fatigue life and balanced mechanical properties as essential performance criteria. The blending method is an important alternative in improving the performance criteria of ABS polymer in service. Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), Fourier Transform Infrared Spectroscopy (FTIR), and
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Equivalent stress concept to account for the effect of local cyclic stress ratio on transverse cracking in tension–tension fatigue Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-30 Vivek Richards Pakkam Gabriel, Mohamed Sahbi Loukil, Patrik Fernberg, Janis Varna
Presented test results on transverse cracking in cross-ply laminates upon tension–tension cyclic loading show that the increase of crack density depends not only on the maximum transverse stress in the cycle but also on the local cyclic stress ratio in the analyzed layer. To include the effect of the in the model with statistical failure stress distribution for crack initiation (based on Weibull distribution)
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Predicting tensile behavior and fatigue life of laser shock peened titanium alloy by crystal plasticity model Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-29 Wenxuan Hu, Min Yi
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Prediction of corrosion fatigue crack growth rate in aluminum alloys based on incremental learning strategy Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-28 Yufeng Peng, Yongzhen Zhang, Lijun Zhang, Leijiang Yao, Xingpeng Guo
The 2xxx series aerospace aluminum alloys, vital for aircraft structures due to their excellent mechanical strength and corrosion resistance, face challenges with corrosion fatigue failure, impacting material integrity and aircraft safety. Accurately predicting the corrosion fatigue crack growth rate is crucial for these materials’ reliability in aerospace applications, ensuring safety and operational
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A comparison of conventional and additively manufactured 316L under thermomechanical fatigue Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-28 Tomáš Babinský, Ivo Šulák, Ladislav Poczklán, Stefan Guth
The present study compares the thermomechanical fatigue (TMF) behaviour of 316L stainless steel manufactured conventionally by hot rolling and additively by laser powder bed fusion (L-PBF). Machined cylindrical specimens were tested under strain-controlled and TMF loading at a temperature range of 550–750 °C and total mechanical strain amplitudes of = 0.2–0.6 %. While the conventional 316L significantly
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Fatigue crack evaluation of butt weld joints in full-scale aluminum alloy joints: Experimental and numerical study of traction structural stress Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-28 Chao Wang, Tao Zhu, Bing Yang, Shoune Xiao, Guangwu Yang
In this study, the digital image correlation technique is used to determine the inconsistent mechanical properties and microstructure non-uniformity in different regions of aluminum alloy butt welded joints. A state monitoring method is proposed based on phased-array ultrasonic total focus imaging for crack evolution. A series of surface fatigue crack propagation tests on full-scale aluminum alloy
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An engineering applicable method for multiaxial fatigue under proportional and non-proportional loads based on the octahedral plane projection Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-27 Tonghui Wang, Yanrong Wang, Dasheng Wei, Shun Yang
Present multiaxial fatigue models have achieved satisfactory performance in predicting multiaxial fatigue life of different loading paths; however, many of them require critical plane calculations and additional material constants. In this study, a novel multiaxial fatigue life prediction model based on octahedral shear strain energy is proposed. In the proposed model, the maximum octahedral shear
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Refined cyclic R-curve determination through residual crack tip stress reduction by annealing Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-27 Lukas Walch, Thomas Klünsner, Gerald Ressel, Stefan Marsoner, Reinhard Pippan, Alfred Hackl, Harald Leitner, Anton Hohenwarter
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Influence of the as-built surface and a T6 heat treatment on the fatigue behavior of additively manufactured AlSi10Mg Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-27 Patrick Lehner, Bastian Blinn, Tong Zhu, Ali Al-Zuhairi, Marek Smaga, Roman Teutsch, Tilmann Beck
As the fatigue strength of materials manufactured via lase-based powder bed fusion (PBF-LB) is highly influenced by process-induced defects and the “as-built” surface, in this work fatigue tests at specimens made of AlSi10Mg with “as-built” and polished surface condition were conducted. In this context also the defect tolerance of the material, and hence its ability to counteract process-induced notch
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Probabilistic fatigue life prediction using multi-layer perceptron with maximum entropy algorithm Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-26 Yifeng Zhu, Zican Hu, Jiaxiang Luo, Peilong Song
In the structural fatigue fields, such as aerospace, maritime, and civil engineering, the accurate construction of the Probability-Stress-Life (P-S-N) curve is crucial for preventing unexpected structural failures and is fundamental to the engineering design process. Conventional methods usually assume that the fatigue life distribution follows a normal or weibull distribution, which overlooks the
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Near real-time calculation of the critical plane in all surface nodes of large metallic structures under multiaxial fatigue loading by visualization of the solution space Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-21 Jana Christine Faes, Tien Dung Dinh, Nicolas Lammens, Wim Van Paepegem
Applications of critical-plane-based fatigue criteria on large FE meshes remain uncommon, primarily due to the absence of a search scheme capable of identifying the critical plane for multiaxial loading scenarios in a way that is both reliable and fast enough. To address this gap, we introduce a three-module optimization scheme based on the Maximum Variance Method (MVM), guided by insights learned
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Exploring VHCF response in L-PBF AlSi7Mg Alloy: Influence of T6 heat treatment on microstructural characteristics and defect distribution Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-21 Md Mehide Hasan Tusher, Ayhan Ince
Laser Powder Bed Fusion (L-PBF) is a popular technique for making intricate parts in various fields. Assessing the load-bearing capacity of components fabricated through L-PBF technique is crucial for broadening their applications across various industrial sectors. While prior research has primarily concentrated on static loads, cyclic loading is critical in real-world engineering applications. The
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Investigation of fatigue durability and influencing factors of coil springs: A case study for metro vehicles Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-21 Yang Liu, Zefeng Wen, Xingwen Wu, Bo Peng, Yabo Zhou, Gongquan Tao
This study investigates the fatigue failure behavior of coil compression springs and various influencing factors. The intrinsic and induced causes of fatigue failure in metro steel springs were revealed by systematic tests. Macroscopic observation and metallographic analysis of the fracture indicate that decarburization, which leads to a reduction in the fatigue limit of the material, was the essential
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Fatigue crack propagation anisotropy of an Al–Zn–Mg–Cu super-thick plate Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-21 H. Wang, Z.J. Zhang, J.P. Hou, B.S. Gong, H.Z. Liu, H.R. Abedi, G. Purcek, H. Yanar, M. Demirtas, Z.F. Zhang
The fatigue crack propagation (FCP) rate is an important performance index in the aerospace industry for the safe lifespan evaluation. In this study, the FCP anisotropy of an Al–Zn–Mg–Cu super-thick rolled plate was analyzed. The results show that as the depth increases, the FCP anisotropy gradually becomes significant especially in the low ΔK region. The specimens tested along the transverse direction
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Toward developing remanufactured Ti6Al4V alloys with high fatigue crack growth resistance by in-situ cooling during laser remanufacturing Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-21 Wanli Ling, Xiaoping Wang, Qiyu Gao, Zhuanni Gao, Xiaoming Wang, Xiaohong Zhan
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Laser shock peening for enhanced fatigue resistance in steel structures: Insights from Q960 steel study Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-20 Yu Ma, Yongtao Bai
Fatigue damage of steel structures is often likened to the “cancer” of structural engineering. Fatigue failure, characterized by the absence of apparent signs before occurrence, usually leads to significant losses. To investigate the potential of laser shock peening (LSP) as an effective method for improving the fatigue performance of steel structures, square plates and compact tension (CT) specimens
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Fatigue life prediction of metal materials under random loads based on load spectrum extrapolation Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-20 Que Wu, Yongxiang Zhao, Xintian Liu
The impact of random loading on the fatigue life of mechanical components contains numerous uncertainties. This study aims to enhance the precision of life prediction by developing mean and amplitude distribution models based on the road load spectrum and extrapolating the operational load beyond the threshold value in the time domain. Additionally, it considers the influence of high cycle fatigue
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Fatigue response of wire-arc additive manufactured nickel-aluminum bronze (NAB) in the post-annealed condition Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-20 Shawkat I. Shakil, Sajad Shakerin, Keivan Rahmdel, Mohsen Mohammadi, Andrea Tridello, Davide S. Paolino, Shuai Shao, Nima Shamsaei, Meysam Haghshenas
Nickel-aluminum bronze (NAB) is chosen for critical applications like marine propellers, pump components, and offshore structures due to its exceptional mechanical properties and corrosion resistance. Considering the utmost importance of the fatigue performance of NAB in such applications, this study investigates the fatigue performance of wire arc additive manufactured (WAAM) NAB in the annealed (675 °C
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Effect of Mode II in the mixed-mode on the fatigue crack growth behaviour for SAPH440 material Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-20 Jong-Sung Kim, Dong-Jun Kim, Seok-Pyo Hong
In this study, the effect of mixed-mode loading on fatigue crack growth under varying applied loads for SAPH440 material was experimentally investigated. Previous research has either examined the effect of mixed-mode loading at a fixed angle or its effect on slanted cracks. This paper uses a CTS specimen and a loading device to apply varying angles of load during Mode I loading conditions. Initially
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Study on low fatigue damage behavior of TC17 titanium alloy with basket-weave microstructure Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-20 Yanli Lu, Jialiang Jiang, Hong Wang, Hanrui Dang, Menghan He
Room-temperature low-fatigue tests were conducted on TC17 titanium alloy, and the low-fatigue damage behavior of TC17 titanium alloy with a basket-weave microstructure at room temperature was investigated. The results show that TC17 titanium alloy exhibits different cyclic hardening/softening phenomena at different strain amplitude () levels, which was closely related to the magnitude of strain amplitude
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A rapid testing method for assessing mode I fatigue delamination of carbon fibre-reinforced polymer Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-18 Sergi Parareda, Daniel Casellas, Jordi Llobet, Jordi Renart, Antonio Mateo
Characterising fatigue delamination in composite materials following standardised testing protocols is often associated with high costs and significant time investment. Therefore, it can be helpful to have a testing strategy to reduce the testing time and easily assess the fatigue delamination of multiple materials and conditions. This work shows how to apply one of the new rapid testing techniques
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Grain size sensitive modelling of the nonlinear behaviour and fatigue damage of Inconel 718 superalloy Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-18 Serge Kruch, Louise Toualbi
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Investigating the influence of infill patterns and mesh modifiers on fatigue properties of 3D printed polymers Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-17 Mohamad Alagheband, Qian Zhang, Sungmoon Jung
This research examines the structural performance of Tough Polylactic Acid (PLA) components made through material extrusion, focusing on tensile and fatigue behaviors. Tough PLA, similar to regular PLA, exhibits improved toughness comparable to acrylonitrile butadiene styrene (ABS). As the application of 3D printed parts for functional use expands, understanding the mechanical attributes of materials
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The fatigue behavior of TC17 titanium alloy under different test environments: The effect of saltwater on fatigue failure characteristics and life estimation Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-17 Wang Jinlong, Peng Wenjie, Liu Tianlong, Shi Zeyu
The study of fatigue behavior in saltwater for TC17 titanium alloy has become a potential research issue in practical engineering and theoretical scientific research. In this study, it is found from the designed fatigue test that the corrosiveness of the test environment has a significant negative effect on the fatigue life of titanium alloy, and the distributions of fatigue life in 3.5%NaCl solution
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Non-stationary vibration fatigue life prediction of automotive components based on long short-term memory network Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-17 Chun Zhang, Ruoqing Wan, Junru He, Jian Yu, Yinjie Zhao
Automotive components are prone to fatigue failure as a result of the long-term effects of vibration loads. Due to the significant non-stationarity of irregular excitations from various road surfaces, the classical frequency-domain method struggles to accurately estimate the fatigue life of automotive components. Based on long short-term memory (LSTM) networks, an efficient time-domain method for non-stationary
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Vibration fatigue assessment and crack propagation mechanism of directionally solidified superalloy with film cooling holes Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-17 Hao Lu, Yeda Lian, Jundong Wang, Zhixun Wen, Zhenwei Li, Zhufeng Yue
Film cooling represents a critical protective measure for turbine blades, yet the presence of film cooling holes (FCHs) under vibrational loads can significantly impact structural strength and integrity. This study conducts random fatigue tests on DZ125L directionally solidified superalloy specimens with FCHs. It investigates how various FCH types and vibration signal intensities influence the vibration
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Comparative investigation of fatigue properties between additively and conventionally manufactured Invar 36 alloy Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-16 Xinxi Liu, Yuhao Zhou, Jie Chen, Dayong An, Xifeng Li, Jun Chen
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Corrigendum to “A new energy based highly stressed volume concept to investigate the notch-pores interaction in thick-walled ductile cast iron subjected to uniaxial fatigue” [Int. J. Fatigue 169 (2023) 107491] Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-15 M. Pedranz, V. Fontanari, S. Raghavendra, C. Santus, F. Zanini, S. Carmignato, D. Lusuardi, F. Berto, M. Benedetti
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Fatigue performance testing and life prediction of welded fuel pipes Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-15 Xingkeng Shen, Ying Dai, Xinmin Chen, Wei Liu, Yishang Zhang, Hongmin Zhou
The external piping system which connects power devices, valve control devices, actuators, etc. is an essential system on the aero engine. Under the combined effects of high fluid pressure and external vibration, multiaxial fatigue failure is the main factor that seriously affects the safety of the piping system. The objective of this paper is to establish the multiaxial fatigue life model for the
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Fatigue life prediction of corroded hangers with parallel steel wire in a network arch bridge under vehicle-bridge interaction based on a novel noniterative simplified method Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-14 Baixue Ge, Rujin Ma, Qiuying Zhu, Airong Chen, Haocheng Chang
Fatigue damage is a main concern during the life-cycle maintenance of bridges with corroded hangers under vehicle-bridge interaction (VBI). In this study, a novel noniterative simplified method for VBI is proposed to analyze the responses of hangers in a network arch bridge, considering the effects of vehicle types, driving lanes, and road surface roughness. Furthermore, the fatigue life of corroded
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Low-cycle fatigue life prediction of austenitic stainless steel alloys: A data-driven approach with identification of key features Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-13 Harsh Kumar Bhardwaj, Mukul Shukla
A data-driven approach for predicting the low-cycle fatigue (LCF) life of austenitic stainless steel (AusSS) is proposed to address the limitations of classical fatigue life prediction models. This approach integrates four key characteristics of the AusSS alloys, namely chemical compositions, microstructure, material processing parameters, and experimental parameters, to compile a comprehensive fatigue
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High cycle fatigue response of grain refined EUROFER97 Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-12 Dario Croccolo, Andrea Di Schino, Roberto Montanari, Giorgio Olmi, Giulia Stornelli, Claudio Testani, Alessandra Varone
The present paper has investigated the high cycle fatigue behavior of EUROFER97 steel submitted to a novel process consisting of cold rolling with reduction ratio of 80 % followed by a heat treatment at 650 °C for 1 h. This process had already proved to be highly effective under static loads leading to a significant improvement in yield stress. The fatigue tests have been performed with 0.2 load ratio
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An iterative crack tip correction algorithm discovered by physical deep symbolic regression Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-11 David Melching, Florian Paysan, Tobias Strohmann, Eric Breitbarth
Digital image correlation is a widely used technique in the field of experimental mechanics. In fracture mechanics, determining the precise location of the crack tip is crucial. In this paper, we introduce a novel crack tip detection algorithm based on displacement and strain fields obtained by digital image correlation. Iterative crack tip correction formulas are discovered by applying deep symbolic
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Cyclic deformation behaviors and damage mechanisms in P92 steel under creep-fatigue loading: Effects of hold condition and oxidation Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-10 Kang-Kang Wang, Jian-Feng Wen, Run-Zi Wang, Ting Ye, Ji Wang, Jian-Ping Tan, Hao-Feng Chen, Xian-Cheng Zhang, Shan-Tung Tu
P92 steel has gained plenty of attention as a top contender for steam generator components and main steam tubes due to the growing need to increase the energy conversion efficiency. However, a major contributor to the premature failure of these components remains the interaction of creep and fatigue damage caused by typical dwell fatigue loading conditions. In this study, creep-fatigue tests of P92
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A novel normalized fatigue progressive damage model for complete stress levels based on artificial neural network Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-10 Jie Zhou, Zhen Wu, Zhengliang Liu, Haolin Wei
The fatigue life model and fatigue stiffness degradation model are most crucial components in establishment of fatigue progressive damage model (FPDM). Based on numerous static and fatigue experiments of glass fiber reinforced polymer-matrix composites (GFRP) 3232A/Glass, a novel normalized FPDM for complete stress level based on artificial neural network (ANN) has been built: (1) By analyzing fatigue
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A simplified fatigue model for CFRP-strengthened RC beams under the coupling action of a hot–wet/saline environment and cyclic loading Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-09 Shanshan Luo, Wen Li, Zhanbiao Chen, Xinyan Guo, Dongyang Li, Jiaxiang Lin, Guang Qin, Peiyan Huang
Reinforced concrete (RC) structures in subtropical coastal areas are subjected to the combined influences of temperature, humidity, and salt exposure. Previous studies on the fatigue failure of fiber-reinforced polymer (FRP)-RC structures did not consider the coupling effect of the environment and loading. In this study, a simplified hot–wet/saline environmental fatigue model was developed to consider
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A model on the coupling between cyclic fatigue and microstructure evolution in a metallic glass Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-09 S.Y. Liang, L.T. Zhang, Y.J. Wang, B. Wang, J.M. Pelletier, J.C. Qiao
Establishing the intrinsic correlation between microstructural heterogeneity and mechanical properties is a challenging issue of metallic glasses. The ratchet behavior was examined in a Zr-based metallic glass under cyclic tensile loading well below the yield point, particularly near the glass transition temperature. It is found that strain evolution during cyclic loading shows heightened sensitivity
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Combining relative stress gradient and effective notch stress methods to evaluate the fatigue life of steel welded members after TIG dressing Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-08 Z. Zhou, A. Andriyana, D.Q. Guan, J. Chen
TIG dressing significantly improves the fatigue strength of welded structures by enlarging the weld toe radius and thereby decreasing stress concentrations and stress gradients at the weld toe location. To accurately evaluate the fatigue life of welded members after TIG dressing, the present work proposes a new strategy by combining the relative stress gradient and effective notch stress method. For
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Effect of Fe-Al intermetallics on fatigue properties of aluminum to steel dissimilar spot welds Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-08 Luke Walker, Nicholas Avedissian, Craig Vanderbilt, Daniel Paolini, Wei Zhang
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Fatigue-based process window for laser beam powder bed fusion additive manufacturing Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-07 Tharun Reddy, Austin Ngo, Justin P. Miner, Christian Gobert, Jack L. Beuth, Anthony D. Rollett, John J. Lewandowski, Sneha P. Narra
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Effects of post-processing and loading orientation on high-cycle fatigue of selective laser melted Ti-6Al-4V Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-06 Nai-Jian Dong, Kang-Kang Wang, Jian-Feng Wen, Bo Chen, Shan-Tung Tu
Recent research on selective laser melted (SLM) Ti-6Al-4V showed that fatigue fracture differs depending on the post-processing and loading orientation. To better understand their influences, tensile and fatigue tests on samples with three post-processing conditions, namely, stress relief (SR), Sub-transus and hot-isostatic-pressing (HIP), were conducted in both the vertical and horizontal loading
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Experimental investigation on the fatigue life and damage mechanism of plain weave composites under biaxial tension–torsion combined fatigue loading Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-06 Zhanguang Chen, Tao Zheng, Rongqing Sun, Li Zhang, Zhongyu Wang, Jindi Zhou, Xiaojian Han, Shangyang Yu, Licheng Guo
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Effect of modified gradient fields on the high-cycle fatigue crack initiation mechanism of Ti6Al4V alloy Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-04 Xiaoqian Yang, Yilong Liang, Fei Li, Xinmao Qin
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The influence mechanism of water jet peening on the fatigue crack growth behavior of 7075 aluminum alloy Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-04 Ping Zhang, Yeran Gao, Jinlong Zhang, Xiujie Yue, Hanping Zhou, Yajie Sun
This study aims to investigate the impact of water jet (WJ) peening on the fatigue crack propagation (FCP) behavior of 7075 aluminum alloy, using the finite element software abaqus to establish WJ peening and FCP models. The effects of WJ peening on surface roughness and residual stress of the 7075 aluminum alloy were examined, as well as the influence of WJ peening on the FCP of the specimens. The
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Effect of solution aging treatment on high and very high cycle fatigue properties of nickel-based alloy fabricated by laser powder bed fusion at 25 °C and 650 °C Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-04 Chuanwen Sun, Wei Li, Rui Sun, Gang Liu, Zhenduo Sun
Heat treatment is an effective post-treatment method for improving the mechanical properties of additive manufacturing (AM) materials by adjusting the microstructure, refining the grain and eliminating residual stress. However, its effect on the fatigue properties of AM materials is not yet well understood. Here, combined with some testing technologies such as 2D & 3D microscopies and electron backscatter
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Additively manufactured Ti-5Al-5V-5Mo-3Cr: Understanding defect-fatigue relationships Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-03 Mohammad Salman Yasin, Alireza Jam, Mahdi Habibnejad-Korayem, Meysam Haghshenas, Shuai Shao, Nima Shamsaei
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Influence of double-side symmetric oblique laser shock peening on shape deviation, surface integrity, and fatigue properties of the blades in small-sized blisk Int. J. Fatigue (IF 5.7) Pub Date : 2024-06-03 Yang Tang, Yongkang Zhang, Maozhong Ge, Yandong Ma, Qingyuan Wu
Double-sided symmetric oblique laser shock peening (DSOLSP) was adopted to experiment on a small-sized blisk with restricted space. The influences of different laser energies on the shape deviation, surface roughness, microhardness, and residual stress of the blades were studied. The optimum process parameters were selected based on the shape deviation results of the blades and the microstructural
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Effect of initial overload on the low cycle fatigue life of GH4169 alloy at different temperatures Int. J. Fatigue (IF 5.7) Pub Date : 2024-05-31 Menglong Fan, Mingmin Qu, Chuanyong Chen, Haijun Xuan, Hailong Qin, Songyi Shi, Zhongnan Bi, Weirong Hong
In this paper, the effect of initial overload on the low cycle fatigue life of GH4169 alloy at different temperatures was studied. The plate specimen with a central hole was designed to perform low cycle fatigue tests at 20 °C, 500 °C and 650 °C with variable initial overloads. Results showed that the subsequent crack propagation rate depended on both overload ratio and following test temperature,
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Fatigue crack growth in AA6082-T6/AA7050-T6 bi-materials: Effect of plastic zone ahead of crack tip Int. J. Fatigue (IF 5.7) Pub Date : 2024-05-29 D.M Neto, S. Hajli, E.R. Sérgio, L. Borrego, J. Jesus, F.V. Antunes, G. Glinka
The main objective here is the understanding of the effect of plastic zone ahead of crack tip on fatigue crack growth (FCG). For that, a numerical simulation of FCG was made, based on cumulative plastic strain, considering a bi-material composed by the 6082-T6 and 7050-T6 aluminium alloys. The first one has a lower yield stress but a higher critical cumulative plastic strain. The values of da/dN are
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Minimum life point determination and fatigue life prediction of thermal barrier coatings based on extended stress and strain method Int. J. Fatigue (IF 5.7) Pub Date : 2024-05-28 Yudong Yao, Yanting Ai, Peng Guan, Jing Tian, Tiannan Bao, Xiao Hu, Chengwei Wu
The study develops the extended stress and strain method (ESSM) capable of extracting the stress-strain perpendicular to the 3D thermal barrier coatings (TBCs) interface and shear stress-strain along the interface. Then, the stresses perpendicular to the interface and the shear stresses along the interface are analyzed in comparison with the conventional stresses. Finally, fatigue life prediction of
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Relating rolling contact fatigue (RCF) life to the microstructure evolution in aerospace grade bearing steels: A comparison of Cronidur-30 with AISI 440C Int. J. Fatigue (IF 5.7) Pub Date : 2024-05-27 R. Rejith, Y. Arivu, D. Kesavan, P. Chakravarthy, S.V.S. Narayana Murty
This article presents an extensive analysis of the microstructural evolution under various heat treatment conditions, mechanical properties (hardness), and rolling contact fatigue (RCF) life assessment and sub-surface crack analysis are studied on high nitrogen bearing steel Cronidur-30(Cr-30). An optimum solutionising temperature range has been identified which ensures desirable hardness as well as
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Impact of 3D printing parameters on static and fatigue properties of polylactic acid (PLA) bone scaffolds Int. J. Fatigue (IF 5.7) Pub Date : 2024-05-27 Hamed Bakhtiari, Alireza Nouri, Majid Tolouei-Rad
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Non-proportionality quantification of noisy stress-time signals using a new rainflow-based noise removal method for fatigue assessment Int. J. Fatigue (IF 5.7) Pub Date : 2024-05-25 Mikkel Løvenskjold Larsen, Alexander Plehn Kladov Holm, Vikas Arora
Non-proportional stresses near welded joints are well known to cause increased fatigue damages as compared to proportional stresses. In this paper, a new method to remove noise from stress-time signals is developed and implemented in a principal component analysis-based approach for non-proportionality quantification. The noise removal method makes it possible to remove noise from stress-time signals
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Strengthening mechanism of abnormally enhanced fatigue ductility of gradient nanostructured 316L stainless steel Int. J. Fatigue (IF 5.7) Pub Date : 2024-05-24 Yang Cheng, Zihan Lin, Shaojun Xie, Xiaogui Wang, Yanyao Jiang
Structural materials with a good combination of high fatigue strength and high fatigue ductility are highly desirable in engineering applications. However, it remains a challenge to “break” the exclusive relationship between fatigue strength and fatigue ductility. The cylindrical 316L stainless steel specimens with a gradient nanostructured surface layer were prepared using surface mechanical rolling
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An artificial neural network method for probabilistic life prediction of corroded reinforced concrete Int. J. Fatigue (IF 5.7) Pub Date : 2024-05-23 Jianxiong Gao, Haojin Yang
Corroded reinforced concrete is affected by many factors. Therefore, the effects of these uncertainties should be considered when predicting fatigue life. However, artificial neural networks cannot determine the uncertainty of fatigue life. This paper establishes a new artificial neural network method to solve this problem. First, survival rates are obtained using the minimum number of specimens method