Article
Engineering, Civil
Jing Sun, Shanqing Xu, Guoxing Lu, Qing Wang, Ao Gong
Summary: This paper extensively investigates the high-velocity impact resistance of lightweight laminates composed of carbon-fibre/epoxy layers sandwiched by titanium alloy skins and aluminium alloy skins. The ballistic limit of the laminates is estimated to be between 241.6 m/s and 257.1 m/s. The impact velocity governs the energy absorption and damage modes. Experimental investigations on the influence of fibre metal laminates configuration show that thicker skins and higher number of fibre layers enhance the specific energy absorption.
THIN-WALLED STRUCTURES
(2022)
Article
Multidisciplinary Sciences
Naresh Kali, Rajesh Korla, Srikanth Korla
Summary: Fibre metal laminates (FMLs) play a vital role in structural applications, offering improved performance and cost effectiveness. This study investigates the impact response of hybrid FMLs reinforced with nanoparticles, finding that the hybridization of glass/carbon FMLs enhances impact strength, while the addition of alumina, zirconium oxide, and titanium oxide nanoparticles leads to some degradation. The size and dispersion of nanoparticles in the polymer matrix significantly affect the impact response of FMLs.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Shuo Wang, Binzhe Zhao, Fanglin Cong, Hongqian Xue, Meng Cao, Fei Teng, Weiguo Su, Xu Cui
Summary: In this study, the interlaminar fracture toughness of FMLs with two different carbon nanofillers was investigated, revealing that the addition of carbon nanofillers has a positive effect on the interlaminar performance of FMLs, with the GNPs/MWCNTs hybrid filler showing the best results.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Construction & Building Technology
Maximilian Schleiting, Kevin Klier, Niels Wiemer, Alexander Wetzel, Jan-Christoph Zarges, Hans-Peter Heim, Bernhard Middendorf
Summary: The use of micro fibres as reinforcement in Ultra-High Performance Concrete (UHPC) enhances its mechanical properties. To achieve an optimal bonding between fibre and cementitious matrix, a coating of fibres with a thermoplastic elastomer is proposed in this study. The pullout tests and flexural strength tests reveal that the coating improves the adhesive bond between fibre and UHPC matrix, but the results differ when inclined fibres are tested.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Mechanics
Jing Sun, Shanqing Xu, Guoxing Lu, Dong Ruan, Qing Wang
Summary: This paper experimentally investigated the influence of strain rate on the tensile failure and mechanical response of self-made titanium- and aluminium-based FMLs. The results showed that titanium-based FMLs exhibited two-stage stress-strain curves, while aluminium-based FMLs showed three-stage failure patterns. The strain rate had negligible influence on the Young's modulus, tensile strength, and energy absorption capacity of titanium-based FMLs, but slightly affected those of aluminium-based FMLs. Titanium-based FMLs had higher specific tensile strength but lower specific energy absorption than aluminium-based FMLs at all strain rates.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Manufacturing
M. Rathnasabapathy, A. P. Mouritz, A. C. Orifici
Summary: This study presents a finite element (FE) model that accurately computes the low energy impact response and damage to fibre metal laminates (FMLs) under tension preloading. The FE model is capable of predicting the initiation and progression of impact damage, including metal plastic deformation, delamination damage, and debonding along the metal-composite interfaces. Experimental data for an aluminium/glass-epoxy FML is used to evaluate the accuracy of the FE model. The model accurately predicts the peak impact load, impact-time response, absorbed impact energy, and bulk deformation of the FML for different impact energy and preload conditions.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Construction & Building Technology
Florence More Dattu Shanker More, Senthil Selvan Subramanian
Summary: Numerous recent studies have focused on fibre reinforced concrete (FRC), which is widely used in the building industry. FRC has gained importance due to its superior mechanical properties compared to regular concrete. Research is being conducted to explore the use of natural fibres in construction to address increasing environmental degradation. This study experimentally investigates the effects of various natural and artificial fibres on the mechanical and durability properties of fibre-reinforced concrete. The addition of fibres improves the compressive strength, load bearing capacity, and resistance to cracks, while the choice of fibre type affects the concrete's response to different durability conditions.
Article
Materials Science, Multidisciplinary
Nicholas R. Pilato, Richard Butler, James Trevarthen, Alexander J. G. Lunt
Summary: This study presents a novel modelling method for carbon fibre composite laminates with wrinkles, using wrinkle geometries measured from non-destructive testing and sample cross-sections. The resulting finite element models allow for rapid assessment of the influence of various physical wrinkle parameters on the mechanical properties of laminates, with validation against analytical models and experimental data.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Characterization & Testing
K. Yoganandam, K. Premkumar, Vasudevan Alagumalai, Jiang Lin, Vigneshwaran Shanmugam, Oisik Das
Summary: This study investigates the puncture resistance of MWCNT/glass fibre epoxy laminate composites using different indenters and evaluates the impact of MWCNT on mechanical properties. The results provide insights into the puncture mechanisms and failure modes, guiding the design and optimization of glass fibre laminate composites.
Article
Engineering, Civil
Haichao Hu, Ning Hu, Qiang Wei, Boya Liu, Jin Wu, Zhanhui Wang, Chen Yang
Summary: The study investigated the progressive damage behavior and failure mechanism of high-strength metal (HSS) / carbon-fibre-reinforced polymer (CFRP) laminates under tensile and three-point bending loadings using experiments and numerical simulations. The outcomes showed typical failure modes under different loading conditions.
THIN-WALLED STRUCTURES
(2021)
Article
Materials Science, Composites
N. Rajesh Jesudoss Hynes, N. J. Vignesh, J. T. Winowlin Jappes, P. Shenbaga Velu, Claudia Barile, Muhammad Asad Ali, Muhammad Umar Farooq, Catalin Pruncu
Summary: This study evaluates two different stacking sequences of Fibre Metal Laminates (FMLs) and compares them with a pure carbon composite. The results show that one of the stacking sequences (Type - I) performs the best, with higher tensile strength, impact resistance, and flexural load bearing capacity.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Civil
Xiangshao Kong, Hu Zhou, Cheng Zheng, Zihan Zhu, Weiguo Wu, Zhongwei Guan, John P. Dear, Haibao Liu
Summary: Due to the confinement effect, blast load from a confined space explosion can cause more severe damage to structures. In this study, different configurations of thermoplastic fibre-metal laminate (TFML) panels were designed and fabricated. Confined-blast experiments were performed to investigate the dynamic response and damage mechanism of TFMLs, and the experimental results were used to develop a method for predicting the response of laminates under confined blast loads.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Manufacturing
Yunfu Ou, Longqiang Wu, Meir Hefetz, Carlos Gonzalez, Juan Jose Vilatela
Summary: This study presents a method for fabricating carbon nanotube fibre veils on woven carbon fibre/epoxy composite laminates and investigates the effects of interleaf thickness and degree of infiltration on interlaminar properties. The interlaminar fracture toughness under different loading conditions is analyzed, and the failure and toughening mechanisms are systematically studied. The experimental results show that the toughening effects of CNT veils depend on their thickness and degree of resin infiltration, observed by electron microscopy and Raman spectroscopy. The mode I interlaminar fracture toughness increases with increasing CNT veil thickness up to 10 μm, but decreases at 15 μm, while the mode II fracture toughness improves with increasing thickness of CNT veils. The figure of merit for interlaminar reinforcement is significantly high at 58.5, surpassing the current state-of-the-art.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Chemistry, Physical
Patryk Jakubczak, Magda Drozdziel, Piotr Podolak, Jesus Pernas-Sanchez
Summary: By combining fibre metal laminates (FML) with sandwich structures, the impact performance of FMLs can be significantly improved by enhancing energy absorption mechanisms. The failure mechanism of fibre foam laminates mainly involves delaminations and matrix cracks, while conventional fibre metal laminates primarily experience fibre cracking due to high stress concentrations. This difference leads to a better after-impact resistance of fibre foam metal laminates, improving the safety of structures manufactured with these materials.
Review
Materials Science, Composites
Sasanka Kakati, Debabrata Chakraborty
Summary: This paper provides a detailed review of the response of fibre metal laminates (FMLs) under low-velocity impact, discussing the influences of geometrical and material parameters, comparing numerical and analytical models, and suggesting potential areas of future research for improving FML performance.
JOURNAL OF COMPOSITE MATERIALS
(2023)
Article
Polymer Science
Ming-ming Xu, Guang-yan Huang, Shun-shan Feng, Graham J. McShane, William J. Stronge
Article
Materials Science, Multidisciplinary
Ming-ming Xu, Guang-yan Huang, Shun-shan Feng, Xiang-yu Qin, G. J. McShane, W. J. Stronge
MATERIALS & DESIGN
(2016)
Article
Engineering, Manufacturing
Mingming Xu, Elena Sitnikova, Shuguang Li
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2020)
Article
Engineering, Multidisciplinary
Shuguang Li, Mingming Xu, Shibo Yan, Elena Sitnikova
Summary: This paper investigates the nonlinear along-fibre shear stress-strain relationship for unidirectionally fibre-reinforced composites and proposes a new formulation based on stress invariants and the rational theoretical framework of nonlinear elasticity. The consistent and objective stress-strain relationship has been obtained and verified through an example of application to a torsion problem.
JOURNAL OF ENGINEERING MATHEMATICS
(2021)
Article
Materials Science, Composites
Shuguang Li, Mingming Xu, Elena Sitnikova
Summary: This paper re-examines the quadratic function of the original Tsai-Wu failure criterion for transversely isotropic materials and determines two troublesome coefficients using analytic geometry. The analysis of the quadratic failure function enhances the consistency of the failure criterion based on it and reveals useful physical relationships. The investigation shows that a failure criterion based on a single quadratic function can only accommodate five independent strength properties and only two out of the three transverse strengths are independent.
JOURNAL OF COMPOSITES SCIENCE
(2022)
Article
Materials Science, Composites
Elena Sitnikova, Mingming Xu, Weiyi Kong, Shuguang Li
Summary: The comprehensive design feasibility for woven composites has been established by identifying the missing component in the design tool for these materials, the so-called controllable parameters. These parameters, which include tow densities, the number and size of filaments, and intra-tow fibre volume fractions, have been related to the conventional geometric parameters of woven composites. This eliminates the need for costly and unreliable measurements and allows for practical considerations and manufacturing restrictions to be involved in material design exercises.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
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)