Article
Engineering, Mechanical
Xinxin Qi, Tianqi Liu, Xinhong Shi, Jiaying Wang, Jianyu Zhang, Binjun Fei
Summary: A stress-based sectional critical plane model is proposed to predict fatigue life under multiaxial constant amplitude loading, considering material properties and loading paths. The model divides critical planes into three sections based on the ratio of maximum shear stress amplitude to maximum normal stress amplitude. Experimental data support the strong applicability of the model for steel, aluminum, and titanium alloy materials, especially under multiaxial loadings with mean stresses. Prediction results show that the proposed model performs better than commonly used criteria for steel materials.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Yang Wang, Guo-Qin Sun, Jinfeng Liu, Xiaodong Liu, Deguang Shang
Summary: A new multiaxial high-cycle fatigue damage parameter is proposed in this study, which can accurately predict the failure criterion and life prediction of structural components under complex low stress. The feasibility of the model is verified by test data of different materials, and the predicted results show smaller errors compared to other fatigue models.
INTERNATIONAL JOURNAL OF DAMAGE MECHANICS
(2022)
Article
Engineering, Mechanical
Mohammed Almamoori, Y. Alizadeh
Summary: This study proposes a simple and effective approach for measuring fatigue life under multiaxial loading. The accuracy and validity of the proposed model were tested and compared with experimental results, showing good agreement. Compared to other famous fatigue prediction models, the proposed model demonstrates higher accuracy in predicting fatigue life.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Engineering, Mechanical
J. L. A. Ferreira, J. N. Dias, E. U. Cardoso, J. A. Araujo, C. R. M. da Silva
Summary: The paper proposes a new critical plane search strategy by calculating the eigenvalues and eigenvectors of the covariance matrix of the shear stress amplitudes, aiming to build a computationally efficient algorithm. The evaluation shows that this strategy performs well compared to experimental data.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Mechanics
Karolina Glowacka, Tadeusz Lagoda
Summary: This paper analyzes the fatigue test results of composite laminate samples and proposes a fatigue criterion based on the critical plane. By testing samples cut from layers with different fiber orientations, the complex stress state of the material with anisotropic properties was obtained. Through calculations and comparison, it was found that the criterion defined in the critical plane determined by shear stresses best matches the experimental results.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Engineering, Mechanical
Punit Arora, Suneel K. K. Gupta, Mahendra K. K. Samal, Jayanta Chattopadhyay
Summary: The present study validates the critical plane (CP)-based fatigue life assessment models for a range of ferrous and non-ferrous materials. Fourteen CP models were analyzed, including a recently developed in-house model. These models utilize various stress and strain metrics to identify critical planes and quantify fatigue damage. The comparative study evaluates the effectiveness and efficiency of these models under different loading conditions and identifies a strain energy density-based model that provides accurate fatigue life assessments without subjective calculations.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Article
Engineering, Mechanical
Muzhou Ma, Xintian Liu, Xueguang Yu, Xiangui Wang
Summary: To meet different functional requirements, the structural design of components often contains irregularities and geometric discontinuities. These discontinuities cause local stress concentrations and notch effects, leading to inaccurate fatigue life prediction. This research modifies the life prediction model of notched specimens by using the notch support factor and strain as damage parameters. An improved critical plane method is used to select damaged planes, considering the damage at the notch before loading and using dynamic weights to measure the effect of the maximum stress plane. The revised model shows higher accuracy compared to other models and provides a more physically meaningful and consistent approach to predict fatigue life based on damaged planes and parameters.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Article
Engineering, Mechanical
Ladislav Poczklan, Jaroslav Polak, Tomas Kruml
Summary: The endurance of 316L steel against multiaxial fatigue is examined. The fatigue life curve for torsional mode extends to longer fatigue lives, while tension/compression mode causes the earliest fracture. The fatigue life curves for both multiaxial modes are similar to the axial mode. Fourteen critical plane models for fatigue life predictions were applied and compared. The modified Smith-Watson-Topper models prove to be the most accurate. The criteria proposed by Fatemi and Socie, Li et al., Zhu et al., and Wang and Brown also produce satisfactory results. The Smith-Watson-Topper model leads to the most precise predictions of fatigue crack orientation.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Mechanical
Jie Zhou, Zhengchao Tan, Linwei Cao, Yuexing Wang
Summary: In the present research, the effects of normal mean stress and shear mean stress on fatigue evolution were studied. Existing critical plane multiaxial models have considered normal mean stress effects but neglected shear mean stress effects, leading to nonconservative predictions under asymmetric loadings. To address this issue, an improved critical energy model was introduced, which takes into account both normal mean stress effect and shear mean stress effect, along with an additional hardening effect. Experimental data from GH4169, wrought Ti-6Al-4V, and TC4 were used to validate the proposed model, demonstrating its capability to reasonably predict fatigue life under various loadings, particularly asymmetric loadings.
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Zhi-Qiang Tao, Guian Qian, Jingyu Sun, Zi-Ling Zhang, Youshi Hong
Summary: This paper proposes a new multiaxial fatigue damage parameter and corresponding equivalent stress modification factors to describe multiaxial fatigue damage under non-proportional loading. Two fatigue damage models are also proposed to estimate fatigue life. The applicability of the methodology is verified using experimental data.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2022)
Article
Mechanics
Jing Li, Xin Wang, Ruo-tian Li, Yuan-ying Qiu
Summary: A new generalized strain energy density-based life prediction model was proposed, which showed improved accuracy and reliability in fatigue life prediction by introducing weight index and considering factors such as mean stress. The model was systematically checked using test data and outperformed three commonly-used life prediction models in terms of accuracy and reliability.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2021)
Article
Engineering, Mechanical
Ensheng Feng, Xiaogang Wang, Chao Jiang
Summary: This paper compares the critical plane approach (CPA) and the dissipated energy approach (DEA) for multiaxial fatigue evaluation. The study finds that the developed DEA model performs better than classic CPA models in terms of prediction accuracy and versatility to different loading paths. An investigation into crack mechanisms reveals that the majority of multiaxial fatigue life is spent on the formation of micro-cracks, which exhibit distinct characteristics under different loading paths. The DEA model is able to better consider this effect compared to the adopted CPA models.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2022)
Article
Engineering, Aerospace
Jingmeng Weng, Tong Meng, Weidong Wen, Shaodong Weng
Summary: This study focuses on the fatigue lives of composite laminates under different tension-torsion biaxial fatigue loading paths. By establishing a macro-meso model, the fatigue life of composite laminates can be predicted with numerical results showing good agreements with experimental data.
CHINESE JOURNAL OF AERONAUTICS
(2021)
Article
Engineering, Mechanical
A. Chiocca, F. Frendo, G. Marulo
Summary: Fatigue of structural components is a significant issue in both scientific and industrial communities, and extensive research is being conducted to address it. The standard methods for calculating critical plane factors are time-consuming and may not be suitable for complex geometries or tight time scheduling. This study presents an efficient algorithm that utilizes tensor invariants and coordinates transformation law to calculate critical plane factors, specifically focusing on the Fatemi-Socie factor. The algorithm was tested on various geometries and loading conditions, demonstrating a significant reduction in computation time without sacrificing solution accuracy.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Mechanical
A. S. Cruces, A. Garcia-Gonzalez, B. Moreno, T. Itoh, P. Lopez-Crespo
Summary: The fatigue behavior of 316 stainless steel was studied using different critical plane models. Seven cylindrical samples were subjected to various complex loading paths, generating combined stresses. Five critical plane models were used for the fatigue analysis. The results showed that all models produced acceptable results, with Fatemi-Socie being the most accurate in terms of cracking orientation, and Liu II providing the best fatigue life predictions.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(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)