Article
Materials Science, Multidisciplinary
Junbin Yang, Yu Gong, Linfei Jiang, Wanjia Lin, Hao Liu
Summary: This work proposes a multiaxial and high-cycle fatigue failure model based on the critical plane criterion, which accurately predicts the fatigue failure behavior and fatigue life of structures or materials under multi-axial loading by considering the influences of material property and loading path on the initiation and growth of fatigue cracks. Experimental results of three kinds of material validate the model's applicability, with most predictions falling within the +/- 2 times scatter band of fatigue life.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Mechanical
H. S. Queiroz, J. A. Araujo, C. R. M. Silva, J. L. A. . Ferreira
Summary: The presence of defects such as notches, tears, holes, cavities, inclusions, and scratches in structural designs and mechanical components can affect their resistance and fatigue life. This research proposes and validates an approach for estimating the fatigue life of materials with small defects subjected to combined loading.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2022)
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)
Reprint
Engineering, Mechanical
B. Dieu, S. Fouvry, V. Doquet, F. Bridier
Summary: This paper investigates the influence of sleeve edge geometry on fretting-fatigue damage in shaft shrink-fitted assemblies under rotating bending. Experimental tests and analysis of broken and unbroken specimens confirm the presence of fretting-fatigue phenomena. A 3D finite element model is developed to evaluate sliding and opening lengths. A sequential tribological-fatigue stress analysis strategy is employed to predict the maximum crack location (Ruiz criterion) and estimate the fatigue endurance of the assembly using the SWT criterion. The presence of a debris layer within the contact is considered in the last step of the sSWT(X-Gmax) approach to improve the consistency of service life prediction.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Sabrina Vantadori, Farshad Abbasi, Andrea Zanichelli, Davide Leonetti, Giovanni Pio Pucillo, Gholam Hossein Majzoobi
Summary: This study simulated an experimental campaign on an Al 7075-T6 aluminium alloy to investigate fretting fatigue behavior. A multiaxial fatigue criterion was used to simulate a flat-to-flat bridge-shaped contact under different fatigue loading conditions.
INTERNATIONAL JOURNAL OF FATIGUE
(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
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
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, Mechanical
Camilla Ronchei, Sabrina Vantadori, Andrea Carpinteri
Summary: In the past few years, the fatigue behavior of Additive Manufacturing (AM) metallic components has been extensively studied experimentally, with limited theoretical works available in the literature. In this study, the fatigue behavior of AM metallic specimens under cyclic loading is theoretically investigated by simulating fatigue tests using a strain-based fatigue criterion proposed by Carpinteri and co-workers. The validity of the criterion is assessed by comparing the theoretical results with experimental results and those obtained through the FatemiSocie fatigue criterion.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
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
Construction & Building Technology
S. Gothivarekar, S. Coppieters, R. Talemi, D. Debruyne
Summary: Integrating forming in the fatigue analyses of cold-formed High Strength Steel parts significantly improves predictive accuracy. Using a Voce law in strain hardening models leads to an increase in prestrain and a decrease in fatigue life. Decreasing bending radius results in increased plastic strain.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2021)
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
Aodi Yu, Hong-Zhong Huang, Yan-Feng Li, He Li, Ying Zeng
Summary: The study introduces a novel fatigue life prediction model based on modified SWT mean stress correction, taking into account the sensitivity of materials and mean stress on the fatigue life of rolling bearings. By introducing a compensation factor to improve the existing SWT model, the proposed model shows better accuracy and outperforms the traditional SWT model, as validated through experimental data.
CHINESE JOURNAL OF MECHANICAL ENGINEERING
(2021)
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
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
Camilla Ronchei, Sabrina Vantadori, Andrea Carpinteri
Summary: In the past few years, the fatigue behavior of Additive Manufacturing (AM) metallic components has been extensively studied experimentally, with limited theoretical works available in the literature. In this study, the fatigue behavior of AM metallic specimens under cyclic loading is theoretically investigated by simulating fatigue tests using a strain-based fatigue criterion proposed by Carpinteri and co-workers. The validity of the criterion is assessed by comparing the theoretical results with experimental results and those obtained through the FatemiSocie fatigue criterion.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Review
Engineering, Multidisciplinary
Qing-Yun Deng, Shun-Peng Zhu, Jin-Chao He, Xue-Kang Li, Andrea Carpinteri
Summary: This study aims to effectively evaluate the multiaxial random/variable amplitude fatigue life. Recent studies on the critical plane method under multiaxial random/variable amplitude loading are reviewed and the computational framework is clearly presented in this paper.
INTERNATIONAL JOURNAL OF STRUCTURAL INTEGRITY
(2022)
Article
Engineering, Mechanical
Sabrina Vantadori, Camilla Ronchei, Daniela Scorza, Andrea Zanichelli
Summary: This paper presents the mechanical and fracture characterization of the shot-earth 772 material. Experimental tests and numerical analyses are conducted to investigate its properties. The experimental tests include flexural, compression, and fracture tests, while the numerical analyses employ a micromechanical model. The obtained numerical results are compared with the experimental ones.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Article
Engineering, Mechanical
Camilla Ronchei, Andrea Carpinteri, Daniela Scorza, Andrea Zanichelli, Sabrina Vantadori
Summary: In this paper, a new criterion named Refined Equivalent Deformation (RED) criterion is proposed for fatigue life assessment of engineering components under multiaxial low-cycle fatigue regime. The criterion takes into account the fatigue strength decrease observed in metals sensitive to non-proportional loading. It is applied to two different metals and compared with other criteria available in the literature.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Mechanical
Sabrina Vantadori, Andrea Zanichelli, Camilla Ronchei, Daniela Scorza, Andrea Carpinteri
Summary: This paper investigates the crack nucleation location in fretting-affected Al 7050T7451 specimens subjected to partial slip. Experimental evidence suggests that cracks can start within the contact zone rather than just at the trailing edge. A parametric study is conducted to explore four different crack nucleation locations on the contact surface, ranging from the trailing edge to the micro-slip region.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Mechanical
Daniela Scorza, Andrea Carpinteri, Camilla Ronchei, Sabrina Vantadori, Andrea Zanichelli
Summary: This study proposed a procedure for assessing the fatigue strength of high strength steel containing non-metallic inclusions, utilizing defect content analysis, root area-parameter model, and multiaxial critical plane-based criterion to determine the distribution of NMIs and optimize fatigue strength estimation accuracy. The results obtained through this procedure were compared with experimental data and results from other criteria.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Mechanical
Daniela Scorza, Raimondo Luciano, Andrea Caporale, Sabrina Vantadori
Summary: In this paper, the behavior of an edge-cracked nanobeam under both Mode I and Mixed-Mode (I + II) static bending loading is analyzed using the stress-driven nonlocal model (SDM), which is applied for the first time in the case of Mixed-Mode loading. The cracked nanobeam is modeled by dividing it into two beam segments connected through a massless elastic rotational spring located at the cracked cross section. The bending stiffness of the cracked cross section is computed using the Griffith energy criterion and the conventional linear elastic fracture mechanics, considering cracks under both Mode I and Mixed-Mode loading. Finally, an edge-cracked cantilever nanobeam subjected to a transversal point load at the free end is analyzed, and the static deflection is calculated and discussed for different crack parameters.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Editorial Material
Engineering, Mechanical
Sabrina Vantadori, Filippo Berto, Andrea Carpinteri, Stefano Natali
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Mechanical
Joanna Malecka, Tadeusz Lagoda, Karolina Glowacka, Sabrina Vantadori
Summary: The present paper aims to experimentally investigate the influence of plastic deformation on the yield strength and torsional fatigue life of a CuZn40Pb2 leaded brass alloy and a 6082-T6 aluminum alloy. Two types of preloading, cyclic torsion (cyclic preloading) and monotonically increasing tension (static preloading), are considered. Different numbers of loading cycles and maximum values of static preloading are considered for each alloy. An in-depth fracture surface analysis on the failed specimens is performed, and fracture mechanisms at different scale lengths are summarized.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Article
Mechanics
Andrea Caporale, Raimondo Luciano, Daniela Scorza, Sabrina Vantadori
Summary: Exact closed-form solutions for multi-cracked Euler-Bernoulli nanobeams are provided through two equivalent approaches. Both approaches involve integral and differential equations for modeling the nanobeams with isolated damaged sections. The first approach uses the integral definition of a local-nonlocal stress-driven model, while the second approach shows that this integral definition is equivalent to a differential equation with constitutive boundary conditions. Both approaches yield the same solution, but the second approach is computationally faster. Interesting results show that local beams have a jump in rotation at the damaged sections, while pure nonlocal nanobeams do not have such singularity.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2023)
Review
Mechanics
Leandro F. Friedrich, Ignacio Iturrioz, Sabrina Vantadori
Summary: This study proposes a Peridynamic (PD) model for simulating fracture failure of single-phase and composite materials with quasi-brittle behavior under Mixed-Mode loading. The novelty of the model lies in considering the dissipated energy from both material degradation-induced damage and frictional sliding-induced damage along rough crack surfaces. Specifically, the model incorporates frictional sliding through a novel bond force-stretch relationship, in which the rupture stretch caused by tension on a generic bond depends on the compression level of adjacent bonds. The PD model is applied to simulate some experimental tests available in the literature.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Mechanical
Sabrina Vantadori, Andrea Carpinteri, Roberto Cerioni, Camilla Ronchei, Daniela Scorza, Andrea Zanichelli, Liviu Marsavina
Summary: The fracture toughness of a polyurethane foam (PUR) is experimentally and numerically studied to analyze its dependence on specimen sizes. Interestingly, such analysis is lacking in the technical literature. The experimental campaign involves testing notched PUR foam beams of different geometrical sizes under three-point bending loading, and the fracture toughness is measured using the Modified Two-Parameter Model. The results are then compared with existing experimental data on the same PUR foam.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Article
Engineering, Mechanical
Giovanni Pio Pucillo, Andrea Carpinteri, Camilla Ronchei, Daniela Scorza, Andrea Zanichelli, Sabrina Vantadori
Summary: This research work focuses on the experimental characterization of the mechanical, fracture, and fatigue properties of shot-earth 772, with a special emphasis on its fatigue behavior. Experimental tests including flexural and compression tests, three-point bending fracture tests, and bending and compression cyclic tests were conducted. A finite element numerical model was used to simulate the cyclic tests and validate the input data through the fracture tests. The accuracy of the model was demonstrated by comparing the numerical fatigue lifetimes with the corresponding experimental results. Contours of the damage parameter and reduced Young modulus were plotted to illustrate the evolution of fatigue damage.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Materials Science, Composites
Daniela Scorza, Camilla Ronchei, Sabrina Vantadori, Andrea Zanichelli
Summary: This study demonstrates the size-effect independence of fracture toughness in Hybrid Fiber-Reinforced RCC through numerical simulation and experimental validation.
COMPOSITES PART C: OPEN ACCESS
(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)
