Article
Engineering, Mechanical
Dian-sen Li, Wen-fen Han, Lei Jiang
Summary: This paper investigates the high strain rate impact effect and failure behavior of three-dimensional six-directional (3D6d) braided composites. The results indicate that the composites exhibit typical strain rate sensitivity, with increased strength and modulus but decreased failure strain as the strain rate rises. Additionally, composites with larger braiding angles show higher dynamic curves and improved high strain rate properties.
EXTREME MECHANICS LETTERS
(2021)
Article
Materials Science, Composites
Jing-kang Cui, Dian-sen Li, Lei Jiang
Summary: This work successfully fabricated 3D5dBCs and 3D6dBCs with carbon/phenolic, and compared their bending properties and failure mechanisms at room and high temperatures. The influences of braiding structure and temperature on bending properties and failure mechanisms were analyzed. The bending properties decrease from room temperature to high temperature, but 3D5dBCs always have higher bending properties than 3D6dBCs. At room temperature, 3D5dBCs are primarily damaged near the surface, while fiber shearing fracture feature becomes apparent and the interior damage worsens at high temperature. 3D6dBCs show transverse sawtooth fracture cracks, and the damage mechanisms are braiding fiber shearing fracture, fifth fiber tearing, sixth fiber shedding and pulling-off, matrix plasticization, and interface debonding.
COMPOSITES COMMUNICATIONS
(2023)
Article
Materials Science, Composites
Jing Ai, Dian-sen Li, Lei Jiang, Dai-ning Fang
Summary: The influence of temperature, braiding angle, and braided structure on the mechanical properties and failure mechanisms of three-dimensional six-directional braided composites (3D6DBCs) were comprehensively analyzed. The study found that the strength and failure modes of the composites varied significantly under different temperatures and braiding angles. In addition, there were significant differences in the properties of the composites with different braided structures.
COMPOSITES COMMUNICATIONS
(2022)
Article
Mechanics
Lin Shi, Zhenyu Wu, Xiaoying Cheng, Xin Ru, Yanhong Yuan
Summary: This study investigated damage behaviors and residual crashworthiness characteristics of braided composite tubes with transverse pre-impact damages subjected to axial compression through experimental and numerical methods. The results indicated that the damage behavior and residual performance of braided tubes under axial compression were mainly influenced by the distribution of delamination induced by impact.
COMPOSITE STRUCTURES
(2021)
Article
Polymer Science
Xueliang Ding, Quanguo He, Qun Yang, Suwei Wang, Ke Chen
Summary: Pultrusion of thermoplastic composites has become a hot topic in manufacturing high-performance materials. In this study, a numerical simulation method was used to model and analyze the impregnation process of glass fiber reinforced nylon 6 composites. The results showed that the pulling rate and injection pressure have significant effects on the impregnation time and resin reflux distance, providing guidance for the optimization of process parameters.
Article
Materials Science, Characterization & Testing
Xiaoxu Wang, Xiaodong Liu, Dongyan Liu, Zunqin Wang, Yanan Zhu, Kun Qian, Diantang Zhang
Summary: This study investigated the influence of moisture absorption on the mechanical properties and damage mechanisms of 3D6D braided composites. The results showed that moisture mainly transported along micro cracks under hydrostatic pressure. After moisture absorption, both tensile and compressive strengths significantly decreased due to fiber-matrix debonding and matrix cracking.
Article
Engineering, Civil
Haiyang Yang, Hongshuai Lei, Guoxing Lu
Summary: The study demonstrates the potential of CFRP and GFRP in designing lightweight thin-walled energy absorbers. GFRP tubes outperformed CFRP in low-velocity impact tests, while GFRP tubes filled with OS-skeleton showed superior energy absorption characteristics.
THIN-WALLED STRUCTURES
(2021)
Article
Mechanics
Lei Ge, Huimin Li, Huayong Zheng, Chun Zhang, Daining Fang
Summary: A two-scale progressive damage method coupled with representative volume cell (RVC) has been developed to predict the mechanical properties of 3D braided composites considering pore defects. Results show that the void-model is superior to the element-model when predicting the mechanical properties of braided composites.
COMPOSITE STRUCTURES
(2021)
Article
Chemistry, Multidisciplinary
Lulu Liu, Shikai Yin, Gang Luo, Zhenhua Zhao, Wei Chen
Summary: This study investigated the impact of three different projectiles on triaxial braided composite panels, finding that soft gelatin projectile absorbs more energy while CFRP projectile leads to shear fracture damage pattern. The environmental temperature was found to influence the damage pattern and energy absorption behavior of triaxial braided composites.
APPLIED SCIENCES-BASEL
(2021)
Article
Materials Science, Composites
Mohamed Ibrahim Abd El Aal, Mahmoud M. Awd M. Allah, Marwa A. Abd El-baky
Summary: The aim of this study is to experimentally investigate the crashworthiness performance and deformation history of hybrid thin-walled composite tubes. Glass (G)/carbon (C) reinforced epoxy circular specimens were prepared and subjected to quasi-static axial compressive loads to examine the impact of hybridization and stacking sequences on crashworthiness and deformation. Various crush indicators, including initial peak force (F-ip), absorbed energy (AE), and specific absorbed energy (SEA), were assessed. The study also analyzed the failure modes and conducted cost analysis for the proposed materials. Findings show that hybridization and stacking order have a significant influence on the crashworthiness performance and failure mode of G/C reinforced epoxy composite tubes. The C/2G/2C/2G/C hybrid is recommended as an energy absorber material for automobiles.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Composites
Yinglong Cai, Zhenqiang Zhao, Ying Tie, Yong Cao, Jiangyi Chen, Wieslaw K. Binienda, Chao Zhang
Summary: The study investigates the size-dependent failure behavior of single-layer triaxially braided composites under transverse tension load. Experimental and numerical results show a transition in the failure mechanism from fiber bundle pull-out dominated to fiber bundle shear dominated as specimen width increases. Numerical simulation results reveal the correlation of free-edge effect with progressive failure behavior.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Mechanics
Hong-mei Zuo, Dian-sen Li, Lei Jiang, Dai-ning Fang
Summary: 3D five-directional braided composites (3D5dBC) have potential applications in marine at low temperature and aerospace at elevated temperature. This study investigated the longitudinal compression fatigue properties and failure mechanisms of 3D5dBC, considering parameters of temperature, braiding angle, and stress level. The results showed that the composite at low temperature had better fatigue resistance ability, and small braiding angle composite had superior fatigue resistance compared to large braiding angle composite.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Civil
Lin Shi, Zhenyu Wu, Xiaoying Cheng, Zhongxiang Pan, Yanhong Yuan
Summary: This paper investigates the impact of transverse low-velocity impacts on tubular composites in automobile engineering, comparing the effects of different stacking sequences and weaving structures on impact response. The results show that hybrid tubes exhibit better impact resistance at higher impact energies.
ENGINEERING STRUCTURES
(2021)
Article
Materials Science, Ceramics
Changqi Liu, Duoqi Shi, Xin Jing, Ruiying Luo, Lianyi Wang, Xiaoguang Yang
Summary: By conducting monotonic tensile and fatigue tests of SiC/SiC composites at 1300 degrees C, it was found that the fatigue behaviors can be divided into three zones. In all three zones, inelastic strains accumulation and stiffness reduction were observed due to matrix cracking, interface damage, and failure of fibers. The fatigue life is long in the run-out zone when the maximum stress is lower than the proportional limit stress (PLS). In the stress-insensitive zone, fracture depends on high-temperature and oxidation effects. Failure in the stress-sensitive zone is dominated by the fiber strength. The interface behaviors greatly affect the fatigue life above the PLS.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Mechanics
Yiding Li, Shibo Yan, Ying Yan, Weijie Zhang
Summary: This paper presents a novel fan-shaped unit cell model for analyzing the compressive behavior of 3D braided tubular composites. The model shows good predictive capability and accuracy, as demonstrated by comparison with experimental and numerical results. The effects of braiding parameters on the performance of the composite material are also discussed.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Composites
Yan Ma, Lichao Yu, Shanshan Jin, Defang Zhao, Songlin Zhang
PLASTICS RUBBER AND COMPOSITES
(2019)
Article
Engineering, Multidisciplinary
Lichao Yu, Yan Ma
COMPOSITES PART B-ENGINEERING
(2019)
Article
Engineering, Multidisciplinary
Defang Zhao, Yan Ma, Yuqiu Yang
COMPOSITES PART B-ENGINEERING
(2019)
Review
Chemistry, Multidisciplinary
Songlin Zhang, Yan Ma, Lakshmi Suresh, Ayou Hao, Michael Bick, Swee Ching Tan, Jun Chen
Article
Materials Science, Composites
Yan Ma, Tomohiro Yokozeki, Masahito Ueda, Yuqiu Yang, Hiroyuki Hamada, Toshi Sugahara
Summary: Finite element simulation shows that the interface properties are crucial in determining the fracture behavior of unidirectional CF/PA6 laminates. Laminates with weak interface properties exhibit a splitting fracture mode, while those with strong interface properties show a step-like fracture behavior.
JOURNAL OF COMPOSITE MATERIALS
(2021)
Article
Mathematics
Hang Yu, Lu Yao, Yan Ma, Zhaoyuan Hou, Jiahui Tang, Yuming Wang, Yang Ni
Summary: In this study, a moisture diffusion equation was developed to accurately predict the behavior of moisture diffusion in multiphase symmetrical sandwich structures. Both finite element analysis and experimental works were conducted to validate the accuracy of the analytical method. The results showed good agreement with both FEA and experimental data, and the correct interface condition for moisture diffusion behavior in sandwich structures was identified.
Article
Engineering, Civil
Lu Yao, Shaofeng Zhang, Hang Yu, Jiajing Xu, Xiaojian Cao, Yan Ma
Summary: This paper mainly investigates the ultimate compression strength of un-strengthened and CFRP-strengthened steel tubes with random pitting corrosion damage using a numerical method. It explores the factors influencing the ultimate strength of corroded steel tubes and studies the method of strengthening steel tubes with CFRPs. The paper also researches the residual compression performance and damage mechanisms of CFRP-strengthened steel tubes.
KSCE JOURNAL OF CIVIL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Lizhou Mao, Mengjuan Zhou, Lu Yao, Hang Yu, Xuefeng Yan, Yue Shen, Wenshuai Chen, Pibo Ma, Yan Ma, Songlin Zhang, Swee Ching Tan
Summary: By integrating rigid protective blocks onto a soft textile substrate, a unique and soft-rigid unified structure (SRUS) inspired by crocodile skin is developed, achieving high cut-, stab-, and abrasion-resistant properties as well as flexibility, waterproofness, and breathability. The SRUS design combines the protective performance of rigid blocks and the wearability of soft textiles and intervals, resulting in excellent protective performance and wearability. This novel approach opens up new possibilities for manufacturing functional composite textiles for personal protective equipment.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Lu Yao, Lizhou Mao, Yanchao Wang, Wentao He, Yan Ma, Hang Yu
Summary: This article investigates the bending response and failure mechanisms of FMLs under three-point bending tests through experimental and numerical methods. By observing the failure mechanisms and damage evolution using in-situ microscope, and simulating the damage initiation and progressive damage evolution, the study characterizes the bending response and stiffness degradation of FMLs under incremental cyclic flexural loading tests. The in-situ monitoring for FMLs-A reveals that the appearance of fiber kink-band, fiber fracture, and metal cracking are synchronized with sudden loading decrease.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Engineering, Civil
Lu Yao, Rong Guo, Hongmei Liu, Yan Ma, Wentao He, Hang Yu
Summary: This paper investigates the low-velocity impact behavior and residual tension performance of FMLs with different composite layer directions through experimental and numerical methods. The impact response and failure behavior of FMLs with various impact loadings are studied experimentally, and the post-impact tension behavior of FMLs with various damaged layers is characterized through tension tests. An integrated numerical model is developed to simulate the impact and post-impact tension behavior of FMLs, and its reliability and accuracy are demonstrated through comparison with experimental results.
THIN-WALLED STRUCTURES
(2023)
Article
Mathematics
Hang Yu, Chenhui Zhu, Lu Yao, Yan Ma, Yang Ni, Shenkai Li, Huan Li, Yang Liu, Yuming Wang
Summary: This study developed a two-stage moisture diffusion model for 3D woven composites, which incorporated a time fractional diffusion equation and fractional order parameters. The model successfully described the non-Fickian behavior of moisture diffusion, including the initial fast diffusion and the long-term slow diffusion stages. The predicted moisture uptake curves of the neat resin and 3D woven composite were in good agreement with experimental results, validating the accuracy of the fractional diffusion model.
Review
Materials Science, Textiles
Yan Ma, Ning Zhu, Wei Zhao, Xuefeng Yan, Yue Shen
Summary: Intelligent wearable devices incorporate flexible electronic components into protective equipment and can detect metals, explosives, human physiological conditions, and hazardous chemicals. However, there is a lack of a systematic literature review providing a comprehensive overview of the preparation and applications of intelligent wearables for security detection. This paper aims to fill this gap by examining the application of intelligent wearables for security detection in specialized and temporary disposal environments, addressing existing challenges and discussing future directions for progress.
JOURNAL OF INDUSTRIAL TEXTILES
(2023)
Article
Materials Science, Composites
Yan Ma, Shanshan Jin, Tomohiro Yokozeki, Masahito Ueda, Yuqiu Yang, Elsayed A. Elbadry, Hiroyuki Hamada, Toshi Sugahara
COMPOSITES SCIENCE AND TECHNOLOGY
(2020)
Article
Chemistry, Multidisciplinary
Xuefeng Yan, Leilei Wu, Shanshan Jin, Wei Zhao, Haijian Cao, Yan Ma
Article
Nanoscience & Nanotechnology
Yan Ma, Leilei Wu, Lichao Yu, Elsayed A. Elbadry, Weiwei Yang, Xiaomei Huang, Xuefeng Yan, Haijian Cao
Summary: In this study, the mechanical properties of unidirectional CF/epoxy laminates were analyzed through static and low-cycle three-point bending tests, revealing that fiber breakages in different layers result in a degradation of both static and cyclic mechanical properties of the laminates. Moreover, fiber breakages on the tension side exhibit higher flexural strength and better cyclic performance compared to those on the compression side.
REVIEWS ON ADVANCED MATERIALS SCIENCE
(2021)
Article
Mechanics
Rawan Aqel, Patrick Severson, Rani Elhajjar
Summary: A novel core splice joint configuration for composite sandwich structures is studied and proposed to improve the strength and toughness. Experimental and numerical efforts show that this configuration can significantly increase the ultimate strength by 13% to 51% and the toughness by 2% to 35%.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Xianheng Wang, Cong Chen, Jinsong Zhang, Xinming Qiu
Summary: In this paper, a new form-finding method based on spatial elastica model (FMSE) is proposed for elastic gridshells. The method integrates the deformations of elastic rods into the overall deformation of the gridshell, and solves a set of transcendental equations using the quasi-Newton method to ensure the deformation satisfies the given boundary conditions. The method is validated through experiments and expected to have potential applications in the investigations of elastic gridshells.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Hao Huang, Zitong Guo, Zhongde Shan, Zheng Sun, Jianhua Liu, Dong Wang, Wang Wang, Jiale Liu, Chenchen Tan
Summary: The conventional evaluation of 3D braided composites' mechanical properties through numerical and experimental methodologies hinders material application due to the expenses, time constraints, and laborious efforts involved. This study establishes a multi-scale finite element model and a surrogate model for predicting the elastic properties of 3D4D rotary braided composites with voids. By optimizing a neural network model, the results are validated and provide valuable insights into the microstructure and properties of these composites.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Xinyu Li, Hao Zhang, Haiyang Yang, Junrong Luo, Zhongmin Xiao, Hongshuai Lei
Summary: Due to their excellent mechanical properties and design flexibility, fluted-core composite sandwich structures have gained significant attention in aerospace and rail transit applications. This study investigated the free-vibration characteristics and optimized design of composite fluted-core sandwich cylinders through theoretical models and experimental tests.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Chao Li, Chunzheng Duan, Xiaodong Tian, Chao Wang
Summary: A mechanistic model considering the bottom edge cutting effect and the anisotropic characteristics of the material is proposed in this paper to accurately predict cutting forces. The model was validated through a series of milling experiments and can be used to predict the cutting force of various parts of the cutter and any feed direction.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Camila Sanches Schimidt, Leopoldo Pisanelli Rodrigues de Oliveira, Carlos De Marqui Jr
Summary: This work investigates the vibro-acoustic performance of graded piezoelectric metamaterial plates. The study shows that piezoelectric metamaterial plates with reconfigurable properties can provide enhanced vibration and sound power attenuation.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Jun Ke, Li-jie Liu, Zhen-yu Wu, Zhong-ping Le, Luo Bao, Dong-wei Luo
Summary: Compared with other green natural fibers, ramie has higher mechanical properties and lower cost. In this study, ramie and glass fiber are made into composite circular tubes. The results show that the hybrid circular tube with ramie and glass fiber has improved torsional mechanical properties and reduced weight and cost. The failure mechanisms are affected by the loading direction and the content of each fiber.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Natalia Pingaro, Gabriele Milani
Summary: This paper proposes an enhanced analytical model for predicting the behavior of FRCM samples tested under standard tensile tests. The model takes into account the interaction between fibers and matrix through the interface, and assumes different material properties at different phases. By solving a second order linear differential equation, an analytical solution can be obtained. The model is validated with experimental data and shows good predictability.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Jialiang Fan, Anastasios P. Vassilopoulos, Veronique Michaud
Summary: This article investigates the effects of voids, joint geometry, and test conditions on the fracture performance of thick adhesive Double Cantilever Beam (DCB) joints. It concludes that grooved DCB joints with low void content tested at low displacement rates showed stable crack propagation without significant crack path deviation.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Auwalu I. Mohammed, Kaarthikeyan Raghupathy, Osvaldo De Victoria Garcia Baltazar, Lawson Onokpasah, Roger Carvalho, Anders Mogensen, Farzaneh Hassani, James Njuguna
Summary: This study investigates the performance of composite pressure vessels under damaged and undamaged conditions, providing insights into their reliability and residual strength capabilities. The results demonstrate that the damage profile and its effect on compressive strength are similar between damaged and non-damaged cylinders. When subjected to quasi-static compression, the polyethylene liner absorbs enough elastic strain energy to recover without plastic deformation. Additionally, quasi-static compression has little to no influence on the axial strength of the cylinders. The damage characterization reveals fiber breakage, delamination, local buckling, and brooming failure. This study has direct implications for the safety design tolerances, manufacturing strategies, and operational failure conditions of composite overwrapped pressure vessels (COPVs).
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Muhammad Irfan Shirazi, Samir Khatir, Djilali Boutchicha, Magd Abdel Wahab
Summary: Structural health monitoring is important to ensure the safety of components and structures. This study proposes a method using finite element models and 1D-CNN network to extract and classify vibration responses for crack detection. The results show that the proposed approach is effective in real-time damage detection.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Maryam Mirsalehi, Kiarash Kianpour, Sharif Shahbeyk, Mohammad Bakhshi
Summary: This study comprehensively investigates the one-way response of 3D-woven sandwich panels (3DWSPs) and their interfering parameters, providing interpretation of elastic and failure results, failure maps, and reliable theoretical models for linear elastic response and observed failure mechanisms.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Yiming Zhao, Zhonggang Wang, Zhigang Yang, Bin Qin
Summary: The paper proposes a Ritz and statistical energy analysis (Ritz SEA) hybrid method for calculating rectangular plate acoustic vibration coupling in the mid-frequency range. This method combines the fast convergence and ability to handle arbitrary boundary conditions of the Ritz method with the power flow equation of the statistical energy analysis method. The results show that this approach effectively filters out random fluctuations in mid-frequency domains while demonstrating exceptional stability and precision.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Joao Henrique Fonseca, Woojung Jang, Dosuck Han, Naksoo Kim, Hyungyil Lee
Summary: This study addresses the enhancement of an injection-molded fiber-reinforced plastic / metal hybrid automotive structure and its plastic injection molding process through the integration of the finite element method, artificial intelligence, and evolutionary search methods. Experimental validation of finite element models, the generation of a database through orthogonal array and Latin hypercube methods, and the training of artificial neural networks are conducted. The genetic optimization algorithm is then applied to identify optimal process parameters. The results show significant reduction in product warpage and manufacturing time while maintaining structural strength, contributing to the advancement of composite automotive structures with superior quality.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Alessandro Vescovini, Carina Xiaochen Li, Javier Paz Mendez, Bo Cheng Jin, Andrea Manes, Chiara Bisagni
Summary: This paper presents a study on six single-stringer specimens manufactured using the card-sliding technique with non-crimp fabrics and adopting a Double-Double (DD) stacking sequence. The specimens were tested under compression loading conditions to investigate post-buckling and failure in aerospace structures. Experimental results and numerical simulations were compared to analyze the behavior and failure modes of the specimens. The study found promising evidence of a viable solution to optimize aeronautical structures and enhance resistance to skin-stringer separation, particularly with the use of tapered flanges.
COMPOSITE STRUCTURES
(2024)
