Article
Materials Science, Composites
Huanfang Wang, Chuang Dong, Wei Hu, Haoyuan Dang, Chunlin Du, Yun Ou, Minxian Shi, Chao Zhang
Summary: This study investigated the thermal stability and mechanical properties of B4C-talc modified high-silica/boronphenolic composites. It was found that the compressive strength of the composite is sensitive to temperature, holding time, and fiber undulation. Different failure modes were observed at different temperatures, and the compressive strength showed different trends with varying holding time at different temperatures.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Mechanics
Chunwang He, Jingran Ge, Yanfei Chen, Yanping Lian
Summary: Virtual testing is a powerful tool for characterizing the mechanical behavior of materials, and this paper proposes a FE-SCA concurrent multiscale framework to overcome the challenges of virtual testing for composite structures. The results show that the proposed framework can accurately predict the mechanical behavior of woven structures and has higher efficiency compared to traditional methods. Due to its efficiency and predictive ability, the FE-SCA concurrent multiscale virtual testing has the potential to facilitate composite design and structure optimization.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
Bin Chen, Jiawei Gong, Wei Huang, Ning Gao, Cong Deng, Xueqin Gao
Summary: Inspired by the clam-shell structure of pearls, a thermally conductive high-density polyethylene (HDPE) reinforced with two-dimensional boron nitride (BN) filler was successfully fabricated using a rotational shear system. The presence of a shish-kebab structure and aligned BN (002) plane resulted in an increased Vicat softening temperature of 107.9 degrees C, demonstrating excellent heat resistance. The composite with 35 vol% BN loading exhibited the optimal thermal conductivity of 1.26 W/mK and a tensile strength of 40 MPa. This study has developed HDPE/BN composites with effective thermal dissipation and higher service temperature, providing longer service life and reduced material replacement frequency under extreme operating conditions.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Materials Science, Composites
Jingwen Shao, Jun Qiu, Wufeng Chen, Hongfei Wang, Kefu Zhang, Juan Wu, Lifeng Yan
Summary: In this study, SAM-rGO and AGO-TEOS were prepared and found to significantly enhance the mechanical strength of silicone rubber, with the strength of SR increasing to 6.30 MPa when 5 wt% AGO-TEOS was added.
COMPOSITES COMMUNICATIONS
(2021)
Article
Engineering, Manufacturing
Yitong Ding, Aichun Han, Hongxun Zhou, Qian Zhou, Hangling Song, Rong Chen, Shaoyun Guo
Summary: This paper investigated the preparation of PCL/C18 composites through multistage biaxial-stretching extrusion, showing significant improvements in oxygen and water vapor barrier performance by 63.7% and 39.6% respectively. The modified composites also exhibited good stability to high humidity conditions.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Polymer Science
Kirill Guseinov, Oleg Kudryavtsev, Alexander Bezmelnitsyn, Sergei Sapozhnikov
Summary: This study focuses on the improvement of experimental methods for studying interlaminar shear properties and failure behavior of fiber-reinforced composites under biaxial loading. A new experimental approach is developed for reliable determination of interlaminar shear properties using a standard testing machine. The study includes stress analysis, fracture mechanism analysis, and stress-strain curve analysis using finite element modeling and digital image correlation. The findings suggest that evaluating composite strength based on maximum load increases the risk of premature failure.
Article
Engineering, Multidisciplinary
Huaipu Kang, Yi Li, Jintao Liang, Daniel Thomson, Hao Cui, Yulong Li
Summary: This paper investigates the dynamic failure behavior of short carbon fiber reinforced polyether-ether-ketone (SCFR-PEEK) composites under biaxial stresses. The failure initiates inside the gauge section under all loading conditions, and the numerical strain fields are in good agreement with the experimental ones. The testing method developed here is also applicable for dynamic biaxial testing of other composites.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Materials Science, Composites
Jing-Jing Lu, Ji-Peng Guan, Hong-Quan Wang, Rui-Qiong Dang, Meng-Xuan Fan, Song-Qing Zhu, Xiao-Jun Shen
Summary: In order to improve the performance of lightweight and high-strength composites in deep-sea environment, epoxy resin and hollow glass beads were used, with graphene oxide to enhance the interfacial adhesion. The results showed that the mechanical properties of the composites were improved after treatments with high-pressure and low-temperature seawater, making them more suitable for deep-sea applications.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Boyao Wang, Bin He, Zhanwen Wang, Shengli Qi, Daijun Zhang, Guofeng Tian, Dezhen Wu
Summary: The hybrid fiber-reinforced composites showed nearly 50% increment in Charpy impact strength and significantly improved flexural performance compared with carbon fiber reinforcement alone. The flexural properties were greatly affected by the stacking sequence, with specimens containing carbon fiber in the compressive sides having higher flexural strength and those with a sandwich-like structure displaying a higher flexural modulus.
Article
Polymer Science
Bich-Nam Jung, Hyun-Wook Jung, Dong-Ho Kang, Gi-Hong Kim, Jin-Kie Shim
Summary: In this study, PP/nanoclay nanocomposites were prepared by biaxial stretching method, which showed improved oxygen barrier properties with increased draw ratio and nanoclay content, resulting in a reduced oxygen permeability value of 43.5 cc center dot mm/m(2)center dot day center dot atm. The composite also exhibited stable oxygen permeability values under increased relative humidity, along with enhanced mechanical and thermal properties. The biaxially-stretched PP/nanoclay nanocomposite shows potential as a replacement for multi-layered packaging materials.
Article
Engineering, Manufacturing
Congmei Lin, Yushi Wen, Liyuan Wei, Ruqin Liu, Xiaoqing Tu, Shiliang Huang, Cui Zhang, Wen Qian, Liangfei Bai, Liang Chen, Feiyan Gong, Ling Ding, Jianhu Zhang, Zhijian Yang
Summary: Precise dimension control during the thermal cycle is challenging for polymer bonded energetic composites. A general strategy of coating negative thermal expansion (NTE) nanoparticles with dopamine has been developed to achieve homogeneous dispersion and improved interaction in the composites. The resulting composites exhibit suppressed thermal expansion, enhanced thermal stability, and improved mechanical properties.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Nanoscience & Nanotechnology
Pei Xu, Bincheng Huang, Ruobing Tang, Zhenfeng Wang, Jiaying Tu, Yunsheng Ding
Summary: This study focuses on the functionalization and distribution of conductive fillers, as well as the interfacial compatibilization of polymer blends, in order to improve the electrical conductivity and electromagnetic interference shielding efficiency of composites. By modifying the carbon nanotubes (CNTs) with an ionic liquid copolymer and controlling the blending process, selective localization of CNTs at the interphase and the formation of effective conductive networks at the interface were achieved. This resulted in a significant increase in electrical conductivity and a maximum EMI shielding efficiency of 41 dB for the PLA/PCL/PIL/CNT composites.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Materials Science, Composites
Shengdao Wang, Yanchao Yang, Yongfeng Mu, Jiyao Shi, Xin Cong, Jiashuang Luan, Guibin Wang
Summary: This study successfully improved the weak interfacial strength between carbon fiber and PEEK matrix in carbon fiber/PEEK composites by introducing chemical bonds, resulting in increased interfacial shear strength and interlaminar shear strength.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Peng Xu, Tangfeng Feng, Yunfei Wang, Wenyu Shen, Huan Wang, Huaxin Peng, Faxiang Qin
Summary: A new rapid evaluation method of composite interfacial shear strength using impedance parameter is proposed in this study, which can calculate IFSS of composites with different resin matrixes conveniently and rapidly. The method shows great potential to screen resin matrixes with excellent interfacial properties towards advanced fiber-reinforced thermosetting resin matrix composite, compared to traditional interface mechanical tests.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Polymer Science
Yuxi Shen, Alia Gallet-Pandelle, Hiroki Kurita, Fumio Narita
Summary: The study demonstrated that adding a surface-active agent and basalt fibers can significantly improve the mechanical properties of cellulose acetate composites, while the arrangement of fibers also affects this effect. Photodecomposition experiments showed that the photocatalyst also has a certain impact on the decomposition of materials.
Article
Materials Science, Multidisciplinary
Khong Wui Gan, Giuliano Allegri, Stephen R. Hallett
MATERIALS & DESIGN
(2016)
Article
Engineering, Mechanical
Tobias Laux, Ole T. Thomsen
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2020)
Article
Mechanics
Tobias Laux, Khong Wui Gan, Janice M. Dulieu-Barton, Ole T. Thomsen
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2019)
Article
Materials Science, Composites
Khong Wui Gan, You Wei Ho, Zheng Yang Ow, Haris Ahmad Israr, King Jye Wong
JOURNAL OF COMPOSITE MATERIALS
(2019)
Article
Engineering, Manufacturing
Tobias Laux, Khong Wui Gan, Janice M. Dulieu-Barton, Ole T. Thomsen
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2020)
Article
Materials Science, Composites
M. H. Mohd Jailani, M. Johar, K. W. Gan, K. J. Wong
PLASTICS RUBBER AND COMPOSITES
(2020)
Article
Mechanics
Tobias Laux, Khong Wui Gan, Rodrigo P. Tavares, Carolina Furtado, Albertino Arteiro, Pedro P. Camanho, Ole T. Thomsen, Janice M. Dulieu-Barton
Summary: The study assesses a meso-scale damage modelling framework for composite laminates using experimental data obtained from a modified Arcan fixture. The model predicts multi-axial open-hole specimen strength with a mean relative error of 15%, showing good agreement with full-field measurements but revealing limitations in predicting shear-dominated damage modes.
COMPOSITE STRUCTURES
(2021)
Article
Materials Science, Composites
Tobias Laux, Roy C. Bullock, Ole T. Thomsen, Janice M. Dulieu-Barton
Summary: The effect of lay-up on the open-hole shear strength of carbon fibre/epoxy composite laminates was investigated. Laminates with equivalent specific stiffness but different lay-up showed significant differences in ultimate shear strength. Digital Image Correlation, X-ray Computed Tomography, and Finite Element Analysis were used to analyze the failure modes associated with different lay-ups. The results suggest that the open-hole shear test could be used for material screening and as a benchmark for damage modelling frameworks in laminated composites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
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)