Article
Materials Science, Multidisciplinary
Shizhe Chen, Muying Guo, Yicheng Li, Xian Dong, Jianian He
Summary: The welds of T-joints are susceptible to fatigue cracking due to stress concentrations and welding residual stresses. Residual stresses can cause the crack propagation direction to shift towards the web and accelerate the crack propagation speed with increasing displacement loading.
Article
Mechanics
J. A. Cabrera-Gonzalez, G. Vargas-Silva, A. Barroso
Summary: Riveted joints have different failure mechanisms, some related to the rivet itself, and others related to the materials to be joined. Stress concentrations at rivet holes play a significant role in failures of unidirectional composite materials. The orthotropic behavior of materials and non-linear contact conditions between the rivet and the hole make it difficult to provide a general solution to the problem.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Mechanical
Yuxuan Liao, Hao Sun, Gusheng Wu, Changcheng Jin, Junjia Cui, Guangyao Li, Hao Jiang
Summary: This paper investigates the effect of rivet arrangement on the fatigue performance of electromagnetic riveted joints. The results show that the rivet arrangement has little effect on shear performance but a significant impact on fatigue performance.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Electrical & Electronic
Qingshan Jiang, Zhiwen Zhao, Zhilong Xu, Jie Sun, Xiuyu Chen, Bosheng Su, Zhenye Zhao, Wanbiao Jiang
Summary: This study used ABAQUS software to establish a simulation model for steel wheels, and predicted their fatigue life by calculating residual stress and maximum stress. The results showed that the superimposed residual stress increased the maximum stress but decreased the fatigue life, providing a theoretical basis for the design and process improvement of automotive steel wheels.
Article
Engineering, Civil
Nawres J. Al-Ramahi, Roberts Joffe, Janis Varna
Summary: A numerical study on double-lap adhesive joints under tensile and thermal loads was conducted, with a focus on different parameters affecting peel and shear stress distribution in the adhesive layer. Results showed that increasing the axial modulus of the adherends reduced stress concentration at overlap ends, while changing the fiber orientation in plies connected to the adhesive layer improved stress distribution.
ENGINEERING STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Niels van den Berg, Haohui Xin, Milan Veljkovic
Summary: This study evaluates the effect of residual stresses on the fatigue crack propagation rate of orthotropic steel decks. Residual stresses have an impact on crack propagation, and the optimal modeling of residual stresses is investigated.
MATERIALS & DESIGN
(2021)
Article
Engineering, Mechanical
Unarine Ramakokovhu, Dawood Desai, Glen Snedden, Tamba Jamiru
Summary: This study investigated the significance of residual stresses in fatigue analyses of micro gas turbine blades and found that residual stresses contribute significantly to fatigue life estimates for engines undertaking short flight missions, with a 70% contribution. However, as flight time increases, the influence of residual stresses decreases due to stress relaxation.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Materials Science, Multidisciplinary
Shuyan Zhang, Zhuozhi Fan, Jun Li, Shuwen Wen, Sanjooram Paddea, Lili Lu, Shiyi Li
Summary: This study investigated the weld residual stresses in a mock-up of a nuclear safe-end dissimilar metal weld (DMW) joint using neutron diffraction, the contour method, and finite element (FE) modelling. The results showed high levels of tensile residual stresses in the hoop direction of the weld joint, with reasonable consistency between the experimental and numerical results.
Article
Metallurgy & Metallurgical Engineering
Yu Hong, Timothy Pickle, Judith Vidal, Chad Augustine, Zhenzhen Yu
Summary: In this study, the dependence of residual stress distribution in 347H stainless steel on base plate thickness, joint geometry design, and preheating condition was systematically investigated using three-dimensional finite element models. The results show that the residual stress distribution varies with different weld designs and preheating conditions.
Article
Materials Science, Multidisciplinary
M. J. Attarha, I Sattari-Far
Summary: The study examines the impact of tensile residual stresses on the fatigue behavior of ASTM A516 pressure vessel steel specimens. Fatigue specimens with smooth notches are used for analysis, and a coupled elastic-plastic constitutive material model is developed. The isotropic and kinematic hardening parameters of the material are determined experimentally, and the damage model parameters are specified from fatigue experiments. The introduction of tensile residual stresses reduces the fatigue life of the specimens by two-thirds, and the fatigue crack initiation and propagation behavior in specimens with residual stress are studied using a developed continuum damage model.
INTERNATIONAL JOURNAL OF DAMAGE MECHANICS
(2023)
Article
Engineering, Mechanical
Maialen Areitioaurtena, Unai Segurajauregi, Martin Fisk, Mario J. Cabello, Eneko Ukar
Summary: In this study, the impact of induction hardened residual stresses on rolling contact fatigue lifetime is investigated using experimental and numerical methods, and the importance of incorporating residual stresses into fatigue life assessments is affirmed.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Marine
A. Bergara, A. Arredondo, J. Altuzarra, J. M. Martinez-Esnaola
Summary: The main objective of this work is to validate a methodology for assessing fatigue crack propagation in offshore mooring chains under service conditions. The study investigates analytical Stress Intensity Factor (SIF) solutions, the Paris law, and the Extended Finite Element Method (XFEM) implemented in the Abaqus(R) 2018 software. The fatigue crack propagation analysis is divided into two stages, and the results demonstrate the feasibility of using XFEM for analyzing fatigue crack propagation in mooring chains.
Article
Materials Science, Composites
Qi Wu, Hongzhou Zhai, Nobuhiro Yoshikawa, Tomotaka Ogasawara, Naoki Morita
Summary: A novel localization approach is proposed for modeling forming-induced residual stresses in fiber reinforced composites. By using a prescribed boundary condition, the simulation setting is simplified, allowing for precise simulation of temperature and residual stresses, thus aiding in understanding the impact of residual stresses on structural deformation.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2021)
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
Vinay Kumar Yadav, Vidit Gaur, I. Singh
Summary: The study found that the complexity in microstructure and tensile residual stress in the weld zone significantly influenced the fatigue behavior of the welded joints. Increase in tensile residual stresses led to an apparent increase in mean stresses, reducing fatigue lives. Re-appearance of hardening precipitates after heat-treatment improved fatigue lives in the welded joints.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Mechanical
Farid Vakili-Tahami, Mohammad Reza Adibeig
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
(2015)
Article
Materials Science, Characterization & Testing
Farid Vakili-Tahami, Mohammad Reza Adibeig
Article
Materials Science, Characterization & Testing
Mohammad Reza Adibeig, Soran Hassanifard, Farid Vakili-Tahami
Article
Materials Science, Characterization & Testing
Farid Vakili-Tahami, Mohammad Reza Adibeig, Soran Hassanifard
Article
Engineering, Chemical
M. R. Adibeig, Gh Marami, M. A. Saeimi-Sadigh, L. F. M. da Silva
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2020)
Article
Polymer Science
Mohammad Reza Adibeig, Farid Vakili-Tahami, Mohammad-Ali Saeimi-Sadigh
Article
Engineering, Multidisciplinary
Fereshteh Seraj, Ladan Fadaie-Vash, Farid Vakili-Tahami, Mohammad Reza Adibeig
Summary: The tensile and creep behavior of Al 7075-T6 at elevated temperatures were studied, with experimental uniaxial creep tests deriving creep constitutive parameters for predicting the creep behavior of Al vessels. The reference stress method and developed constitutive model were used to provide design conditions and optimum creep lifetime for Al vessels subjected to combined rotation and internal pressure. These graphs can facilitate the design process of Al vessels in industrial applications.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2021)
Article
Engineering, Chemical
M. R. Adibeig, F. Vakili-Tahami, M. A. Saeimi-Sadigh, P. Majnoun, L. F. M. da Silva
Summary: The mechanical behavior of single strap joints under tensile loading was investigated in this study, with a focus on the effects of friction stir spot welding parameters and adhesive application on the failure load capacity of the joints. The results showed that specific welding parameters could enhance the failure load capacity of the joints, and applying adhesive could increase their load carrying capacity. The experimental data and numerical results were in good agreement, with errors of less than 6%.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2021)
Article
Engineering, Multidisciplinary
Peyman Majnoun, Mohammad Reza Ghavi, Farid Vakili-Tahami, Mohammad Reza Adibeig
Summary: Burn-through is a major concern in in-service welding, and a new thermo-mechanical model has been developed to address this issue. Experimental data validates the model's accuracy, showing that it can identify high-risk cases not accounted for by Battelle's criterion.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2021)
Article
Automation & Control Systems
Soran Hassanifard, Mohammad Reza Adibeig, Seyed M. Hashemi
Summary: This study evaluates the strain-based fatigue parameters of Ti-6Al-4V alloys fabricated through additive manufacturing (AM) and assesses their accuracy. The effects of AM methods, building direction, and post-processing techniques on the fatigue parameters are considered, and various case studies are conducted to validate the predicted results.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Elyas Haddadi, Abuzar Es'haghi Oskui, Mohammad Reza Adibeig, Jinrui Cao, Sorour Sadeghzade
Summary: One of the prerequisites for accurately evaluating a material's fracture behavior is the generation of an appropriate pre-crack in it without affecting its crack resistance. In this study, pre-cracks were generated in polyvinyl chloride (PVC) samples, which are highly sensitive to crack tip radius, followed by investigating the method's effects on fracture behavior. Pre-cracked specimens processed by slotting and broaching were studied, and the broaching method showed more accuracy and energy efficiency compared to slotting method.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2023)
Article
Polymer Science
Asghar Gholizadeh, Farid Vakili-Tahami, Mohammad Reza Adibeig
Summary: This article investigates the creep behavior of pure and reinforced epoxy samples with different amounts of reduced graphene oxide (RGO) at two temperature levels. The mechanical properties and creep behavior are obtained through tests at different stress levels. It is discovered that adding 0.5% RGO increases the yield strength by 51% and the maximum strain by 20%. The modified Burgers model accurately simulates the creep behavior, and the addition of RGO particles improves the microstructure of the reinforced samples.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Biomedical
Mohammad Reza Adibeig, Farid Vakili-Tahami, Mohammad-Ali Saeimi-Sadigh
Summary: The main aim of this research is to investigate the effects of building directions and raster orientations on the creep behavior of 3D-printed plastic material and develop rheological constitutive models to estimate the creep behavior of components. The study found that both building direction and raster orientation play a major role in determining the mechanical behavior of the specimens.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Mohammad Reza Adibeig, Soran Hassanifard, Farid Vakili-Tahami, Jesper Henri Hattel
MATERIALS TODAY COMMUNICATIONS
(2018)
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)
