Article
Engineering, Mechanical
Zhi-Qiang Tao, Ming Zhang, Yu Zhu, Tian Cai, Zi-Ling Zhang, Hu Liu, Bin Bai, Dao-Hang Li
Summary: A new calculation approach is suggested to evaluate the fatigue life of notched specimens under multiaxial variable amplitude loading, and the results demonstrate accurate estimations through experimental data validation.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2021)
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
Engineering, Mechanical
Yi-Er Guo, De-Guang Shang, Di Cai, Tian Jin, Dao-Hang Li
Summary: A fatigue life prediction method based on stress normalization was proposed to reduce the influence of material property dispersion on the life of CFRC. To consider the effect of temperature on fatigue damage, a temperature influence factor was introduced into the fatigue limit equation, and a life prediction method under variable amplitude loading at high temperature was developed. The proposed method was validated using experimental results of composite multidirectional laminates under constant and variable amplitude loadings at various temperatures, with prediction errors within a factor of 5.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Mechanical
C. T. Kouanga, J. D. Jones, I. Revill, A. Wormald, D. Nowell, R. S. Dwyer-Joyce, L. Susmel
Summary: The research work presented in this paper has two aims. The first aim is to provide a large number of new experimental results by conducting tests on specimens of grey cast iron under both constant and variable amplitude fretting fatigue loading. The second aim is to develop an advanced fretting fatigue design approach by combining the Modified W.hler Curve Method, the Theory of Critical Distances, and the Shear Stress-Maximum Variance Method. The validation exercise using the experimental results demonstrates that the proposed methodology is a powerful tool for designing mechanical assemblies against fretting fatigue.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Geng Hou, De-Guang Shang, Lin-Xuan Zuo, Lin-Feng Qu, Ming Xia, Shaodong Wu, Guo-Cheng Hao
Summary: The fatigue life of needled C/SiC composite material was studied through constant and variable amplitude fatigue tests. Various methods were used to predict the fatigue life under different loading conditions, and the influence of needled fiber bundle on the life dispersion was quantitatively analyzed.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Mechanical
Go Matsubara, Atsushi Hayashida
Summary: In this study, fatigue life with respect to multiaxial variable-stress amplitude was evaluated using the total path length method. The obtained lives were found to be shorter than those predicted using the Wang-Brown method, longer than those predicted using the PDMR method, and comparable to those predicted using the total path length method.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Materials Science, Multidisciplinary
Zhi-Qiang Tao, Guian Qian, Xiang Li, Jingyu Sun, Zi-Ling Zhang, Dao-Hang Li
Summary: This article proposes an innovative approach for determining the critical plane with weight-averaged largest fatigue damage, considering the failure modes of materials. Depending on the shear cracking behavior or tensile failure behavior of the material, an appropriate critical plane model is selected, and a multiaxial fatigue lifetime estimation methodology is established. Validation results using six materials demonstrate that the proposed methodology accurately estimates the orientation angles of failure planes and provides satisfactory fatigue lifetime estimations for both shear and tensile failure mode materials. Furthermore, the critical plane framework can be extended to stress-based fatigue criteria, and prediction results are in good agreement with experimental data for two additional materials.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Mechanical
Le Xu, Run-Zi Wang, Ji Wang, Lei He, Takamoto Itoh, Hideo Miura, Xian-Cheng Zhang, Shan-Tung Tu
Summary: In this paper, strain-controlled fatigue and creep-fatigue tests were performed on type 304 stainless steel at 873 K, and subsequent metallographic observations were conducted. A viscoplasticity constitutive model and damage models were proposed to simulate the cyclic stress-strain responses and predict creep-fatigue damage evaluations. Good agreements were achieved between experimental data and simulated results.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Engineering, Mechanical
I. M. Matos, J. A. Araujo, F. C. Castro
Summary: In this study, vibration data from a transmission line in the center-west region of Brazil was used to perform fretting fatigue tests on aluminum alloy wires. Two different methodologies for life prediction were applied to variable amplitude loading conditions, and the agreement between measured and predicted lives indicated their usefulness for fatigue analysis of overhead conductors.
TRIBOLOGY INTERNATIONAL
(2023)
Review
Materials Science, Multidisciplinary
Yahiya Ahmed Kedir, Hirpa G. Lemu
Summary: Metallic materials are widely used in engineering constructions, and fatigue failure is a common failure mechanism in metals. Despite being studied for almost 160 years, many problems in metal fatigue remain unsolved. Fatigue occurs in metals when they are subjected to varying loads, leading to failure due to accumulation of damage. The fatigue process involves damage buildup, crack initiation, and crack growth until reaching the critical flaw size. Various prediction models have been developed to understand and predict the fatigue phenomenon, including microstructure scale parameters and different approaches for life prediction. This paper reviews these models and identifies gaps in knowledge about predicting fatigue crack initiation under variable loading at high temperatures.
Article
Engineering, Mechanical
Aleksander Karolczuk, Marek Slonski
Summary: Fatigue life prediction for materials under multiaxial loading using Gaussian process is an efficient and practical approach to avoid selecting inadequate semi-empirical parametric fatigue models, as demonstrated by accurate predictions in experimental data compared to traditional parametric models.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Engineering, Mechanical
Luca Susmel
Summary: This paper presents the reformulation of the Modified Wohler Curve Method to design notched components against constant/variable amplitude multiaxial fatigue loading using nominal stresses. The accuracy of this design methodology is validated against numerous experimental results from the literature, which strongly supports its effectiveness for assessing the multiaxial fatigue of notched structural components, even when fatigue strength reduction factors are estimated using standard formulas.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Mechanical
Hao Chen, Fan Yang, Zhen Wu, Bowen Yang, Junzhou Huo
Summary: This paper proposes a nonlinear fatigue damage accumulation model under variable amplitude loading considering the loading sequence effect. The model is validated and compared through experimental data, and it is found that the prediction accuracy of the proposed model is significantly higher than the other two models, while the difficulty of using the proposed model is lower than that of similar models.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Mechanical
Dao-Hang Li, De-Guang Shang, Xiang Yin, Ming Li, Feng Chen, Guo-Qin Sun, Wei Sun
Summary: A new life assessment framework is proposed based on elastic-viscoplastic modeling and damage behavior for structural components under multiaxial nonproportional loading at high temperature. The framework utilizes a viscoplastic constitutive model to capture non-proportional hardening effect and a damage model to assess failure life comprehensively. Evaluation of the framework at 650 degrees C shows errors within a factor of 2 under proportional and non-proportional fatigue loadings.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Engineering, Mechanical
Enora Bellec, Cedric Doudard, Matteo Luca Facchinetti, Sylvain Calloch, Sylvain Moyne
Summary: This study proposes a new methodology for assessing the lifespan of safety components in cars through measured analysis and quantifying the impact of different loads. The method is based on load measurements at the vehicle wheels and considers multi-input load cases with variable amplitude content. The study partitions the measured time-series into driver-induced loads and effects of random road conditions, and applies suitable life quantification methods for validation. The paper provides a detailed explanation of the partition process and validation steps.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
