Article
Materials Science, Composites
Rui He, Longfei Cheng, Yidi Gao, Hao Cui, Yulong Li
Summary: This paper investigates the effect of in-plane shear stress on the fiber kinking compressive fracture toughness of laminates using compact compression specimens with off-axis fibers. The results show that in-plane shear stress increases the values of the R-curves, leading to an increase in energy dissipation. Microscopic morphology reveals the increasing splitting of fiber bundles and subsequent fiber compression failure as the off-axis angle of the fibers increases.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Mechanics
Ryoma Aoki, Ryo Higuchi, Tomohiro Yokozeki
Summary: In this study, open-hole tensile fatigue tests were conducted on carbon-fiber-reinforced polymer laminates using thin-ply prepregs to investigate the effects of varying ply thickness. Fatigue damage growth around a circular hole was evaluated through X-ray radiography, and the effect of fatigue damage on residual strength was assessed through static tensile tests. The results demonstrated that thin-ply laminates can suppress fatigue damage growth and retain residual strength under high-cycle fatigue, confirming their superiority over thick-ply laminates.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
Kaili Gong, Lian Yin, Haifeng Pan, Shaohua Mao, Lu Liu, Keqing Zhou
Summary: MXene, a graphene-like material, shows promising flame retardant potential in polymers. This study investigates the effect of bimetallic MXene on flame retardant performance and finds that the introduction of bimetallic MXene into epoxy resin composites significantly improves their flame retardant properties.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Materials Science, Characterization & Testing
Hongliang Tuo, Tao Wu, Zhixian Lu, Xiaoping Ma
Summary: This study investigates the damage evolution and failure mechanism of impacted laminates under fatigue loadings, revealing that the evolution of damage area can be divided into two stages.
Article
Engineering, Manufacturing
U. A. Khashaba
Summary: Fatigue tests were conducted on scarf adhesive joints (SAJs) with composite substrates to investigate the effects of Al2O3 nanoparticles on fatigue strength at different temperatures. Incorporation of Al2O3 nanoparticles improved fatigue strength and influenced the glass transition temperature. The U-p parameter was found to be the most suitable for predicting joint collapse.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Mechanics
Faisal H. Bhuiyan, Ray S. Fertig
Summary: The study developed a physics-based multiscale fatigue damage analysis methodology and applied it to fatigue damage prediction in composite materials, enabling damage analysis and prediction of laminates in different directions under tensile loading.
COMPOSITE STRUCTURES
(2022)
Article
Metallurgy & Metallurgical Engineering
Taolei Wang, Chao Lin, Dan Batalu, Lu Zhang, Jingzhou Hu, Wei Lu
Summary: PLLA-magnesium composites have been investigated as potential biodegradable materials for bone implants. The high corrosion resistance of amorphous Mg65Zn30Ca5 prevents deteriorating mechanical strength and enhances the antibacterial property of the composite, showing promising application in bone repair and tissue regeneration.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Engineering, Multidisciplinary
Zhongbin Tang, Chunyang Chen, Aijia Li, Yong Deng, Chao Zhang, Yulong Li
Summary: This study investigates the tensile failure behaviors of PEEK, short carbon, and glass-fiber-reinforced PEEK composites at different temperatures and strain rates. Quasi-static and dynamic tensile tests are conducted, and the fracture morphology is characterized by scanning electron microscopy. The results show that the tensile strength is highly influenced by temperature and strain rate. The failure strain of the composites is less sensitive to strain rate at -30 degrees C and 100 degrees C. Additionally, the energy absorptivity of PEEK composites decreases at extreme temperatures.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Engineering, Multidisciplinary
Thanasis Chatziathanasiou, Jeroen Soete, Johan Vanhulst, Delphine Carrella-Payan, Larissa Gorbatikh, Mahoor Mehdikhani
Summary: This paper reports the implementation of a methodology for in-situ 3D characterisation of the crack front in a double cantilever beam test using microfocus X-ray computed tomography. The crack initiation and propagation inside the bulk were determined through crack segmentation in the in-situ tomograms, allowing quantification of the fracture toughness without the need for artificially imposed initiation criteria such as the non-linearity.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Mechanics
Liaojun Yao, Hao Cui, Licheng Guo, Yi Sun
Summary: A new total fatigue life model for delamination growth in composites has been proposed in this study, which can appropriately characterize the FDG behavior under various fatigue loading conditions. By obtaining master resistance curves, the FDG behavior under different R-ratios can be determined, with these curves shifting downwards with mode mixity changes.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Manufacturing
Mathew W. Joosten, Carlos G. Davila, Qingda Yang
Summary: A computationally efficient fatigue analysis methodology is proposed that can predict the initiation and propagation of cracks using a cycle jump approach and a unified local fatigue cohesive zone model. The results of verification and validation experiments indicate that this method can reproduce fatigue damage initiation and evolution for different configurations and load combinations.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Materials Science, Characterization & Testing
Wen Song, Tao Liu, Chenyang Song, Shujuan Wang, Yunjuan Jing, Jun Ma, Guosheng Li, Rui Zhou, Hao Dou, Wei Fan
Summary: This study investigated the static bending and flexural fatigue properties of 3D stitched composites with different stitching yarns. The results show that different stitching yarn types affected the static flexural strength and fatigue failure mechanism of the composites. Using PBO fibers can effectively improve the fatigue life.
Article
Materials Science, Composites
Shuhang Liu, Yiting Guo, Jianwei Li, Sichen Wu, Jie Xu, Emilia Pawlikowska, Jie Kong, Artur Maciej Rydosz, Mikolaj Szafran, Feng Gao
Summary: Ceramic/polymer dielectric functional composites, specifically the (Ba0.6Sr0.4)TiO3/PEEK (BST/PEEK) composites, were prepared with high frequency stability of the dielectric constant and low dielectric loss via cold-pressing sintering. The optimal properties of the BST/PEEK composites were achieved at a BST concentration of 40 vol% and sintered at 360°C for 1 hour, showing a permittivity of 23, a loss of 0.0065, F(x) <5%, and a dielectric tunability of 11.9%. The study provides insight for developing new composites with low loss and high frequency stability.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Composites
Wei Fan, Hua Yang, Ambrose C. Taylor
Summary: A numerical model based on crack phase field analysis was used to investigate the quasi-static fracture process in interpenetrating phase composites (IPCs). The study found that tougher and stiffer tougheners result in more fracture in the brittle phase, but less fracture in the toughening phase, leading to a competition between increasing breakage in the brittle phase and declining breakage in the toughening phase. The study also identified various crack propagation patterns and compared fracture in different microstructures.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Composites
Danian Liu, Jingwen Wang, Wenhai Peng, Houqing Wang, Hua Ren
Summary: Researchers have designed an organic semiconductor material, polyethylene glycol-polyaniline multialternating block copolymer, to meet the demand for lightweight and flexibility in the development of aeronautics, astronautics, and wearable technology. This material has good processing performance and dispersion, and its alternating block structure provides a high dielectric constant.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Acoustics
E. Salloum, O. Maloberti, S. Panier, M. Nesser, P. Klimczyk, J. Fortin
Summary: This study identifies the magneto-mechanical behavior in electromagnetic components and electrical machines by measuring time-dependent acceleration, magnetic field, and induction signals in a Single Sheet Tester. It distinguishes between inertia-induced strain and magnetic-induced strain, analyzing their characteristics at different frequencies relative to the sample's natural frequency, and investigates the effect of excitation harmonics on mechanical response.
JOURNAL OF SOUND AND VIBRATION
(2021)
Article
Engineering, Manufacturing
Alexis Maurel, Matti Haukka, Eric MacDonald, Lauri Kivijarvi, Elmeri Lahtinen, Hyeonseok Kim, Michel Armand, Aurelie Cayla, Arash Jamali, Sylvie Grugeon, Loic Dupont, Stephane Panier
Summary: This paper explores the ability to 3D print lithium-ion batteries using specific materials and processes, discussing the advantages and drawbacks of two different additive manufacturing technologies and proposing strategies for optimizing electrochemical performance. The study shows that complex three-dimensional lithium-ion battery designs exhibit enhanced electrochemical suitability at high current densities compared to traditional two-dimensional designs.
ADDITIVE MANUFACTURING
(2021)
Article
Materials Science, Multidisciplinary
Alexis Maurel, Roberto Russo, Sylvie Grugeon, Stephane Panier, Loic Dupont
Summary: This paper presents the development of an environmentally-friendly lithium-terephtalate/polylactic acid (Li2TP/PLA) composite filament for 3D printing as the negative electrode of a lithium-ion battery. The filament formulation is solvent-free and incorporates synthesized Li2TP particles, PLA polymer powder, poly(ethylene glycol) dimethyl ether, and carbon black to improve printability and electrical performance. A novel route to enhance liquid electrolyte impregnation in 3D-printed electrodes is proposed using slicing software capabilities.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2021)
Article
Mathematics, Interdisciplinary Applications
Xiao Ma, Modesar Shakoor, Dmytro Vasiukov, Stepan V. Lomov, Chung Hae Park
Summary: Numerical artifacts in FFT methods for multiphase elastic problems, caused by irregular discretization of the interface, are addressed in this study. An enhanced composite voxel method using the level-set technique is proposed to alleviate implementation difficulties and is particularly useful for non-parametrized interface representations.
COMPUTATIONAL MECHANICS
(2021)
Article
Engineering, Multidisciplinary
Umesh Marathe, Meghashree Padhan, Stephane Panier, Jayashree Bijwe
Summary: Fabric-(BD-bi-directionally) reinforced high performance polymer composites are known for their exceptional mechanical, thermal, and tribological properties, but face challenges in processing, especially for specialty polymers. This paper focuses on the development, characterization, and performance analysis of graphite fabric reinforced PAEK composites, showing that film-stacking technique excelled in most performance properties.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Engineering, Electrical & Electronic
M. Nesser, O. Maloberti, E. Salloum, J. Dupuy, S. Panier, C. Pineau, J-P Birat, J. Fortin, P. Dassonvalle
Summary: The purpose of this study is to investigate the impact of ultra-short pulse laser treatments on the magnetic properties of grain-oriented electrical steels. The study proposes adjusted models to estimate the effects of laser treatments on the steel surface and correlates these physical impacts with loss coefficients. The optimization of laser parameters is found to significantly reduce iron loss.
IEEE TRANSACTIONS ON MAGNETICS
(2022)
Article
Materials Science, Composites
Christophe Cruanes, Keerthi Krishna Parvathaneni, Dmytro Vasiukov, Chung Hae Park
Summary: This study investigated the mechanism of crack propagation in three-dimensional glass-fiber warp interlock epoxy composites under fatigue loading using time-lapse micro-computed tomography observations. The results showed that detectable cracks were initiated by debonding between adjacent warp yarns and grew along their interface. Further crack propagation occurred along one of the warp yarns aligned in the loading direction. The coalescence of cracks and propagation to weaker zones were observed around the middle lifetime. The influence of void defects at different material scales was also demonstrated, with interyarn voids having little impact on fatigue performance and intrayarn voids significantly degrading the fatigue performance at the micro-scale.
JOURNAL OF COMPOSITES SCIENCE
(2022)
Article
Engineering, Electrical & Electronic
O. Maloberti, P. Dupont, T. Etifier, E. Salloum, M. Ployard, P. Dassonvalle, J. Fortin, S. Panier
Summary: This work investigates a 2-D vector field behavioral model to describe the anisotropic magnetic permeability and losses in Grain-Oriented Electrical Steels (GOES) within quasi-static and magneto-harmonic working conditions. The model considers the effects of non-hysteretic magnetic field, quasi-static hysteresis losses, and dynamic damping eddy field.
IEEE TRANSACTIONS ON MAGNETICS
(2022)
Article
Materials Science, Multidisciplinary
O. Maloberti, E. Salloum, M. L. Ababsa, M. Nesser, S. Panier, P. Dassonvalle, J. Fortin, C. Pineau, J-P. Birat
Summary: This paper discusses the dynamic magnetic properties of soft magnetic materials and the influence of sheet thickness on iron losses. The analysis and experiments were conducted through magnetic measurements and microscopic observations to predict the results and conclusions under different thicknesses.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Chemistry, Physical
Shahryar Manzoor, Israr Ud Din, Khaled Giasin, Ugur Koklu, Kamran A. Khan, Stephane Panier
Summary: Considering the challenges in machining composites, this study numerically evaluated the effects of cutting parameters on thrust force and torque during drilling of glass-fiber-reinforced polymers. A developed model accurately predicted the thrust force and torque profiles, providing useful guidelines for drilling operations to minimize drilling-induced damage. The study also investigated the effect of coefficient of friction and found that higher friction reduced the thrust force.
Article
Engineering, Multidisciplinary
Krushna Shinde, Vincent Itier, Jose Mennesson, Dmytro Vasiukov, Modesar Shakoor
Summary: This paper proposes an original approach based on an autoencoder neural network to construct a nonlinear Reduced-Order Model for a highly nonlinear brittle fracture problem. The effectiveness of the autoencoder in dimensionality reduction or compression of highly nonlinear data is demonstrated through a set of simulations. A complete deep learning framework is introduced to predict crack propagation patterns directly from the loading conditions. The proposed approach is validated using data sets generated for two problems with proportional and non-proportional loading conditions, evaluating its capabilities.
APPLIED MATHEMATICAL MODELLING
(2023)
Article
Mechanics
Xiao Ma, Yang Chen, Modesar Shakoor, Dmytro Vasiukov, Stepan V. Lomov, Chung Hae Park
Summary: This paper focuses on the numerical implementation of phase-field models of fracture using the Fast Fourier Transform based numerical method. The influence of a simplification in the phase-field evolution equation on heterogeneous materials is assessed and a complete formulation is proposed. The assessment shows that the simplified formulation leads to artificial diffusion of damage between different components, while the complete formulation suppresses this diffusion.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Mechanics
Xiao Ma, Dmytro Vasiukov, Modesar Shakoor, Stepan V. Lomov, Chung Hae Park
Summary: This paper focuses on the numerical implementation of phase-field models of fracture using the Fast Fourier Transform (FFT) based numerical method. The choice of regularization length in phase-field models is important for both macroscopic mechanical behavior and local crack propagation patterns. Wu's phase-field model has been successful in reducing length sensitivity for homogeneous materials, and it has also been found to be more suitable than Miehe's model for brittle failure with the introduction of an elastic stage. The sensitivity of Wu's model for heterogeneous materials has also been investigated in this study.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Materials Science, Characterization & Testing
Julien Vasseur, Nicolas Leymarie, Vincent Dorval, Benoit Dupont, Dmytro Vasiukov, Salim Chaki
Summary: Ultrasonic imaging using the Total Focusing Method (TFM) is useful for accurately locating and sizing defects, but can be distorted by multiple scattering phenomena when imaging clusters of pores. This study performs simulations in a 2D context with different scattering models, and compares the results with experimental tests using controlled sets of side-drilled holes. The use of a multiple scattering model improves the qualitative and quantitative accuracy of the TFM images by considering shadowing and interaction effects between defects.
NDT & E INTERNATIONAL
(2023)
Review
Computer Science, Information Systems
Alexis Maurel, Ana C. Martinez, Sylvie Grugeon, Stephane Panier, Loic Dupont, Pedro Cortes, Cameroun G. Sherrard, Ian Small, Sreeprasad T. Sreenivasan, Eric Macdonald
Summary: High-resolution additive manufacturing enables the production of intricate structures that could revolutionize the fabrication of next-generation batteries. By utilizing vat photopolymerization technology, shape-conformable three-dimensional batteries with improved safety and power performance can be co-designed for specific applications, reducing weight and dead volume. Different approaches such as introducing solid electroactive particles or metal precursors are discussed, along with the impact of thermal post-processing on the electrochemical properties of VPP printed battery components.
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)
