Article
Engineering, Multidisciplinary
Jichong Wang, Xiongqi Peng, Zhigao Huang, Huaming Zhou
Summary: A temperature-dependent 3D anisotropic visco-hyperelastic constitutive model was developed for jute woven fabric reinforced PBS biocomposites, considering the temperature influence on the interaction between fabric reinforcement and PBS matrix. Finite element simulation of thermoforming process validated the proposed model.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Mechanics
Dong-Hyeop Kim, Sang-Woo Kim, In Lee
Summary: This study evaluates the deformation of plain woven composite structures induced by the curing process. The effective material property is calculated by considering fabric parameters closely related to the material properties. The theoretical models for predicting the cure behavior and effective material property are incorporated into finite element-based three-dimensional cure simulation. The results revealed the relationship between deformation and composite yarn thickness, as well as the gap between adjacent yarns. The process-induced deformation considering fabric parameters can contribute to improving the manufacturing quality of woven composite structures.
COMPOSITE STRUCTURES
(2022)
Article
Mechanics
Dug-Joong Kim, Gyu-Won Kim, Jeong-hyeon Baek, Byeunggun Nam, Hak-Sung Kim
Summary: A novel deep neural network was proposed for predicting the mechanical behavior of plain carbon fabric reinforced woven composites. The network was trained using a pre-simulated stress-strain curve database based on yarn structures and material properties. Micro-mechanics-based multi-scale analyses were conducted for progressive damage analysis, and the network was optimized using the Hyperband algorithm. The predicted mechanical behavior of the composites was validated through mechanical tests.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
Qingsong Wei, Dan Yang, Bohong Gu, Baozhong Sun
Summary: This study investigates the ballistic impact on Kevlar multilayer three-dimensional angle-interlock woven fabric (3DAWF) using a mesoscale geometrical model for numerical simulation. The results show that numerical simulations with strain rate effects in the yarn material properties accurately reproduce the ballistic test results and provide a more precise prediction in projectile's velocity, energy absorption mechanism, and failure morphology compared to traditional FEA.
INTERNATIONAL JOURNAL OF DAMAGE MECHANICS
(2021)
Article
Mechanics
Yanan Ke, Shuwei Huang, Jinhui Guo, Chaofeng Han, Baozhong Sun, Bohong Gu
Summary: This study examines the effects of thermo-oxidative aging on the mechanical properties of 3-D angle-interlock woven composites, revealing a decrease in mechanical performance, earlier onset of interface damage, and a reduction in surface strain and Poisson's ratio with aging. A finite element model was utilized to explore the mechanisms of mechanical degradation.
COMPOSITE STRUCTURES
(2022)
Review
Materials Science, Textiles
Hongtao Zhou, Weiqing Jiang, Lei Zhao, Guifu Li, Bin Zhou, Qian Ma
Summary: This paper investigated the off-axis tensile behaviors of triaxial woven fabric reinforced rubber composites, TWFR, experimentally and numerically. Stress-strain curves and tensile failure morphologies were obtained at seven different off-axis angles, showing nonlinear tensile behavior and a tensile-shear mixed failure mechanism in TWFR. The experimental results were in good agreement with the finite element analysis results, indicating the coupling working stage of yarns and rubber matrix in TWFR.
JOURNAL OF ENGINEERED FIBERS AND FABRICS
(2021)
Article
Mechanics
Evren Sonat, Sezer Ozerinc
Summary: The study shows that increasing scarf angle reduces the tensile strength of the repaired composite structures, resulting in different types of failure. Finite element analysis using cohesive zone modeling accurately predicts the experimentally observed response, with stress concentration distribution over the bonding area playing a crucial role in determining the failure type. Further investigation reveals that adhesive defects can significantly decrease the strength of the bonded specimens.
COMPOSITE STRUCTURES
(2021)
Article
Materials Science, Textiles
M. H. Boroomand, A. Alamdar-Yazdi, M. S. Ahmadi
Summary: In this study, the mechanical properties of 3D textile reinforced composites with different fiber percentages were investigated using numerical simulations and experimental methods. The results demonstrated a good agreement between the numerical and experimental results.
JOURNAL OF THE TEXTILE INSTITUTE
(2023)
Article
Mechanics
Zheng-Mao Yang, Jing-Yu Sun, Jun-Jie Yang, Tian-Wei Liu, Hui Liu
Summary: This study focuses on the effects of weave architecture on the mechanical response of CMCs under inhomogeneous stress and strain fields. By establishing a finite element model and verifying it with experimental results, it is found that the woven structure may result in lower strength compared to laminate composites.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Manufacturing
F. Yu, S. Chen, L. T. Harper, N. A. Warrior
Summary: In the study of forming-induced wrinkling behavior in bi-axial fabrics, it was found that using a non-linear bending model produces more accurate wrinkle patterns compared to experimental data. This is because the bending stiffness parameter is varied as a function of the applied forming load to account for fiber buckling. Areas of high in-plane shear are more likely to induce out-of-plane wrinkles.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Mechanics
Yanan Ke, Baozhong Sun, Bohong Gu, Wei Zhang
Summary: The study found that cracks in the carbon/matrix composite material mainly initiate at the interface between adjacent orthogonal yarns, and propagate horizontally hindered by the undulating warp tows. The crack volume and depth increase with aging time. Realistic finite element models constructed based on CT slices can predict the most likely location of crack initiation and detect the influence of yarn architecture on damage mechanism sensitivity.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Tianwei Wu, Gen Li, Yousong Xue, Bohong Gu, Dongmei Hu, Baozhong Sun
Summary: The mechanical-electrical coupling behaviors of 3D carbon fiber angle-interlock woven composites under tensile loading were investigated in this study. Different loading modes were adopted to find the relationship between electrical resistance and tension damages, and a mechanical-electrical constitutive model was developed to reveal the relationship between internal damage modes and electrical resistance. Tensile deformation and damage of the composites led to an increase in electrical resistance, and the increased range was related to the degree of deformation, damage, and damage accumulation. The transition point of the electrical resistance change represented the initial point of warp yarn longitudinal damages.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Composites
Zhe Li, Wei Li
Summary: In this study, carbon fiber triaxial woven fabric/thermoplastic polyurethane flexible textile composites with high coverage were produced using hot-pressing method. The section shape of the composites was observed by SEM. The tensile strains and deformation process of the composites in different directions were analyzed using DIC and stress analysis. Additionally, it was found that carbon fiber triaxial woven fabric can reflect electromagnetic radiation, increasing the efficiency of reflection in composites. This research provides the possibility for the application of flexible textile composites as space deployment devices.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Composites
Osman Atalay, Fahrettin Ozturk
Summary: The effects of gripper location and blank geometry on the thermoforming of a pre-consolidated carbon-fiber woven-fabric/polyphenylene sulfide (PPS) thermoplastic composite sheet has been investigated. The study found that when the blank is attached with eight springs from the lugs to the blank holder, the deformation and distortion of the net edge of the sheet can be avoided, resulting in significant reductions in the extent of defect formation.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Mechanics
Shijia Xu, Shuai He, Jiayi Li, Beiyao Xiao, Wei Zhang
Summary: This study tested the quasi-static tension behavior of high-strength glass fiber four-Harness stain woven composite, Kevlar fiber plain woven composite, and their laminated hybrid composite. Representative volume element models were established based on mesoscopic cross-section photographs combined with voxel mesh. A progressive damage model was proposed to predict the damage initiation and evolution of the 2D woven composites, considering the crimping effect of plain-woven composites.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
Zhi-yong Li, You-song Xue, Bao-zhong Sun, Bo-hong Gu
Summary: This study reports the ballistic impact damage of plain-woven laminates with different hybrid structures and stacking sequences. Experimental and finite element analysis results show that UHMWPE/Kevlar hybrid laminates with Kevlar layers as the front face have the highest energy absorption capacity.
DEFENCE TECHNOLOGY
(2023)
Article
Materials Science, Textiles
Wei Huang, Yousong Xue, Lingming Xue, Bohong Gu, Baozhong Sun, Wei Zhang
Summary: This paper investigates the electrical responses and electrical-mechanical behaviors of three-dimensional braided composites with different braiding angles under three-point bending load. The correlation between electrical resistance and damage of the composites is also examined. A proposed electrical-mechanical model based on the Weibull distribution function is found to validate the experimental results, providing a theoretical basis for structural health monitoring of three-dimensional braided composites using the electrical resistance change method.
TEXTILE RESEARCH JOURNAL
(2023)
Article
Materials Science, Composites
Wenjing Cao, Yuanyuan Wu, Bohong Gu
Summary: Impact damage distribution is crucial for designing composite structures with high-impact damage tolerances. In this study, the initiation, evolution, and distribution of impact damage in woven composites were investigated. The woven structure was found to greatly influence the damage propagation and the distribution of strain and stress. The high strength and straight arrangement of the weft yarn contributed to its high deformation resistance, large stress value, and wide stress distribution. On the other hand, the crimp of the warp yarn limited the stress distribution, leading to stress and damage concentration.
APPLIED COMPOSITE MATERIALS
(2023)
Article
Materials Science, Textiles
Feng Xu, Jing Long, Baozhong Sun, Bohong Gu
Summary: This study investigates the effects of thermo-oxidative aging on the strain rate sensitivity and compression failure mechanism of three-dimensional angle-interlock woven composites (3DAWCs) using digital image correlation technique and finite element analysis. The results demonstrate that the strain rate sensitivity of 3DAWCs decreases after thermo-oxidative aging. The aging effect also influences the damage initiation and strain localization behavior.
TEXTILE RESEARCH JOURNAL
(2023)
Article
Engineering, Civil
Yuanyuan Wu, Jinhui Guo, Limeng Xun, Baozhong Sun, Bohong Gu
Summary: This study reports the anisotropic low-velocity impact behaviors of 3D braided carbon fiber/epoxy composites after thermo-oxidative aging. The findings show that the loading in the out-of-plane direction has better resistance to aging degradation and more sensitive stiffness degradation.
THIN-WALLED STRUCTURES
(2023)
Article
Materials Science, Composites
Jing Long, Feng Xu, Yuanyuan Wu, Baozhong Sun, Bohong Gu
Summary: The mechanical behaviors of thermo-oxidative aged 3D braided composites are influenced by matrix degradation and crack evolution. The study investigates the degradation behaviors, crack propagations, and mechanical reduction mechanisms of three-dimensional five-directional (3D5d) braided composites under thermal oxygen coupling environment. The aging behaviors in a pure thermal environment were also analyzed for comparison. The results show that the presence of oxygen accelerates crack initiation and propagation, leading to a decrease in the mechanical properties of the composites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Composites
Shuwei Huang, Junjie Zhang, Bohong Gu, Baozhong Sun
Summary: Thermal stress concentration, caused by the mismatch of coefficients of thermal expansion, plays a significant role in the fatigue and failure of composites. We demonstrated the practicality of fiber Bragg grating sensors and high-resolution digital image correlation technique for in-situ characterization of thermal strain field evolution in 3D angle-interlocked woven composites. Our study found that the CTE mismatch leads to stress localization at the interface and exhibits a periodic distribution within the 3DAWC. The thermal stress in the resin reaches a maximum of 22 MPa around Tg, close to half of its yield stress.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Composites
Dandan Fang, Jianhua Yan, Bohong Gu, Baozhong Sun
Summary: The impact and flexural properties of 3D five-directional braided carbon/glass hybrid epoxy composites were investigated. Different arrangements of carbon fiber and glass fiber in the axial yarn were examined, and it was found that the C/G(2) composite had higher impact energy absorption capacity, while the C/G(1) composite showed higher impact stress. The flexural properties of the C/C-a composite were the best, while the C/G(3) composite exhibited the poorest performance before impact. This study provides guidance for the structural design of composites in specific applications.
JOURNAL OF COMPOSITE MATERIALS
(2023)
Article
Materials Science, Textiles
Juan Fang, Junjie Zhang, Baozhong Sun, Bohong Gu
Summary: The mode I fracture behavior of three-dimensional braided carbon fiber/epoxy composites was investigated using the double-cantilever beam method. The effects of different loading rates on fracture behavior were compared. It was found that the braiding yarns prevent crack initiation and propagation, while the braiding structure causes crack bifurcation. The results show that the three-dimensional braided structure is effective in increasing fracture toughness.
TEXTILE RESEARCH JOURNAL
(2023)
Article
Materials Science, Textiles
Xinyu Gao, Qihang Wang, Baozhong Sun, Bohong Gu, Meiqi Hu
Summary: In this study, a new method for preparing the three-way integrated braided preform was reported. The compressive behaviors of the three-way braided composite tubes were tested to reveal the effects of the braided structure. It was found that reducing branch length or increasing braiding layers can improve the compressive strength and initial stiffness. The main damage mechanisms observed were yarn breakage, yarn debonding, and kink band. The uniform braided structure paves the way for the formation of a seamless braided structure with high compressive strength among the three branch tubes.
TEXTILE RESEARCH JOURNAL
(2023)
Article
Engineering, Civil
Limeng Xun, Shuwei Huang, Baozhong Sun, Bohong Gu
Summary: This study reports the initiation and development of torsional cracks in carbon-fiber 3D braided composite tubes. 3D digital image correlation and micro-CT techniques were used to observe the crack distribution and reveal the correlation with the braided structure. The study found that the torsional damage propagates along the helix of braided bundles and inhibits in the vertical direction within repeated braid units.
THIN-WALLED STRUCTURES
(2023)
Article
Mechanics
Zhiyong Li, Yousong Xue, Baozhong Sun, Bohong Gu
Summary: This study investigated the penetration behavior of hybrid carbon/Kevlar/UHMWPE fiber laminated composites and revealed their complex failure mechanisms. Finite element modeling was used to predict the impact-induced damages for the hybrid composites. The results showed that the energy absorption capability of the hybrid laminates can be improved by 16.4%.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Composites
Feng Xu, Jing Long, Shuwei Huang, Baozhong Sun, Bohong Gu
Summary: This study developed a coupled thermo-chemical-mechanical multiphysics model to simulate the thermo-oxidative ageing process of 3D angle-interlock woven composites. The model considers the residual stress state of the composite after curing and successfully predicts the oxidized layer distribution and interface cracks in agreement with experimental results. This model contributes to evaluating the complex stress and interface damage during thermo-oxidative ageing.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Composites
Jing Long, Feng Xu, Shuwei Huang, Tianwei Wu, Baozhong Sun, Bohong Gu
Summary: This study investigates the effects of ageing cracks and loading directions on the mechanical behaviors of thermo-oxidative aged 3D braided composites. X-ray micro-computed tomography and digital image correlation technique are used to analyze ageing crack propagations, compressive responses, in-situ strain evolutions, full-field damage distributions, and crack evolution mechanisms. The results reveal ageing weakening behaviors, anisotropy effects, and structure correlations. Ageing cracks affect surface strain and damage distributions but not internal shear modes during out-of-plane (OP) loading. The synergy between ageing cracks and in-plane (IP) loading is greater than that with OP loading. This work provides important guidance for the structural optimization and durability design of 3D braided composites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Zhiyong Li, Yousong Xue, Baozhong Sun, Bohong Gu
Summary: Fiber hybrid is a promising strategy for improving the ballistic penetration behaviors of fiber-reinforced laminated composites. This study investigates the effect of hybridization ratios on the ballistic impact damage of carbon/Kevlar/UHMWPE hybrid laminates. The results provide important theoretical basis and experimental reference for designing and developing hard multiphase anti-impact composite structures.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)