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
Engineering, Manufacturing
F. Yu, S. Chen, L. T. Harper, N. A. Warrior
Summary: The study investigated the effect of inter-ply sliding on multi-ply NCF preforms during the DDF process, and found that wrinkles were most severe when the inter-ply angle was 45 degrees, with wrinkle length being related to the relative fibre angle. Experiments confirmed that out-of-plane wrinkles are sensitive to the friction resistance between NCF plies, and lubricating the fibres can minimize wrinkling defects caused by dissimilar inter-ply deformation.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Materials Science, Composites
Lode Daelemans, Brecht Tomme, Baris Caglar, Veronique Michaud, Jeroen Van Stappen, Veerle Cnudde, Matthieu Boone, Wim Van Paepegem
Summary: The through-thickness compressive behavior of fabric reinforcements is important in liquid composite molding manufacturing processes, and predictive simulations are necessary. A solution using hybrid virtual fibers, combining finite elements for in-plane fiber properties and out-of-plane fiber bending, enables accurate predictive compressive simulations.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Mechanics
Jian Ge, Lehua Qi, Wenlong Tian, Xujiang Chao, Wei Li, Hejun Li
Summary: This paper proposes a novel numerical model to accurately predict the effective elastic properties of C/C composites with anisotropic pyrocarbon. The model homogenizes the pore-pyrocarbon system as an equivalent matrix and divides it using a modified Voronoi tessellation method based on pyrocarbon micromorphology. Cohesive elements are introduced to capture the interphase effect on the effective elastic properties of C/C composites.
COMPOSITE STRUCTURES
(2023)
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
Engineering, Manufacturing
Min-Gu Han, Seung-Hwan Chang
Summary: This study developed a draping simulation technique that can reflect the mechanical behavior of uncured woven fabric prepregs, and accurately obtained the basic mechanical properties through tests and simulations, for evaluating and validating fabric composite structures.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Multidisciplinary Sciences
Yifan Wang, Liuchi Li, Douglas Hofmann, Jose E. Andrade, Chiara Daraio
Summary: The study presents a structured fabric with tunable bending modulus made up of three-dimensional particles arranged into layered chain mails. When pressure is applied at their boundaries, the particles interlock and jam the chain mails, resulting in a dramatic increase in bending resistance. This property is due to the high tensile resistance of the interlocking particles, providing potential for lightweight, tunable and adaptive fabrics for various applications.
Article
Engineering, Manufacturing
Min-Gu Han, Seung-Hwan Chang
Summary: The compressive characteristics of egg-box energy-absorbing cores composed of plain-weave carbon/epoxy composites were analyzed via finite-element analysis and experimentally validated. The simulation technique successfully predicted the crushing behavior of the egg-box energy-absorbing core, and the corresponding failure mode under compression was estimated successfully.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Materials Science, Textiles
Youssef Cherradi, Hocine Kebir, Aicha Boukhriss, Habiba Ennamiri, Mustafa Benyoucef
Summary: Three-dimensionally knitted technology textiles have great potential in industrial and technical applications. However, there are challenges in developing computational tools to predict the mechanical behavior of these textiles while keeping the computing cost low. A yarn-level simulation model was created to understand the specific mechanical behaviors of knitted textiles, and the effects of various parameters were investigated.
JOURNAL OF INDUSTRIAL TEXTILES
(2022)
Article
Materials Science, Composites
Mengran Li, Kai Liu, Jingran Ge, Junbo Xie, Zengfei Liu, Binbin Zhang, Jian Huang, Jun Liang
Summary: This paper presents a novel numerical modeling method for simulating the mechanical behaviors of three-dimensional woven fabric reinforcements. The method utilizes digital element analysis and reconstruction algorithms to generate high-fidelity solid geometric models. A digital-chain tracing method is employed to describe fiber directional orientation within torsional yarns. The proposed method is validated through finite element analysis and in-situ Micro-CT experiments. It provides accurate simulation results and has potential applications in composite design and structure optimization.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Manufacturing
F. Yu, S. Chen, L. T. Harper, N. A. Warrior
Summary: A global-to-local modelling strategy is proposed to predict macroscale defects in biaxial non-crimp fabric during double diaphragm forming. The two-stage approach combines coarse and fine mesh simulations to accurately predict forming-induced defects, showing a CPU time reduction of approximately 13% compared to high fidelity full-scale models. The methodology is validated through fabric forming experiments, demonstrating good agreement between predicted and observed defect locations and characteristics.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Multidisciplinary
F. Yu, S. Chen, G. D. Lawrence, N. A. Warrior, L. T. Harper
Summary: This study investigates the forming behavior of preforms made from Non-Crimp Fabric (NCF) for manufacturing complex double-curved geometries using Double Diaphragm Forming (DDF). Finite element (FE) simulations are used to study the effect of ply layup sequence on the formation of fabric wrinkles. The simulation results are in good agreement with experimental results, showing the location and number of fabric wrinkles for single or multi-ply layups. The simulations reveal that fabric over-shearing induced by convex double-curved features and dissimilar inter-ply shear deformations lead to fabric wrinkles.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Automation & Control Systems
Madhura Athale, Taejoon Park, Ryan Hahnlen, Farhang Pourboghrat
Summary: This paper investigates the mechanical properties of 3D printed fiber-reinforced polymer composite materials. Through experimental characterization and finite element modeling, the effectiveness of this material as a forming tool is demonstrated, and the significant influence of anisotropy and strain rate sensitivity on its performance is discovered.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Mechanics
Witold Ogierman
Summary: This study presents a time-efficient and accurate method for estimating the effective nonlinear behavior of composites reinforced with misaligned short fibers. By combining a two-stage hybrid homogenization method with a novel formulation of the pseudo-grain discretization method, the proposed approach provides accurate results in both linear elastic and elastic-plastic regimes. The accuracy of the method has been verified through comparisons with reference solutions obtained using established analytical and numerical methods.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
R. Bai, J. Colmars, B. Chen, N. Naouar, P. Boisse
Summary: This paper demonstrates that a fibrous shell approach based on quasi-inextensibility of the fibers can accurately model the deformation during forming of composite reinforcements. The rotation of the material normal is simulated in good agreement with forming experiments, which is not the case for alternative approaches.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Manufacturing
Wenwu Zhang, Helezi Zhou, Bin Huang, Huamin Zhou, Xiongqi Peng
Summary: This paper investigates the tool-ply friction behavior of jute/PLA biocomposites in thermoforming. A pull-through friction testing device was developed to characterize the tool-ply friction behavior of jute/PLA prepreg at elevated temperature. The effects of alkali treatment, fiber orientation, normal force, and slipping velocity were studied, and a quantitative definition of tool-ply friction behavior was achieved. The results indicate a strong relationship between tool-ply friction behavior and woven and fiber structures, indicating hydrodynamic lubrication.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Stephen Clay, Wesley Ault, Alex Faupel, Caglar Oskay, Philip Knoth, Noam N. Y. Shemesh, Rami Haj-Ali, Uri Breiman, Ido Meshi, Ofir Shor
Summary: This paper presents an experimental investigation on the compression failure mechanisms of laminated carbon fiber reinforced composites under non-standard quasi-static loading. The results demonstrate the presence of interior kink bands, surface ply splitting, and delaminations, with each failure mechanism associated with different stress levels.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Bowen Zeng, Jinlong Yang, Zhi Ni, Yucheng Fan, Ziyan Hang, Chuang Feng
Summary: This study successfully improved the pyroelectric properties of PVDF films by preparing functionally graded graphene nanoplatelet (FG-GNP) reinforced PVDF composite films. The increase in the number of layers and the concentration of GNP near the surface of the composite film were found to enhance the pyroelectric properties and temperature stability.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Shenghe Zhang, Fukai Chu, Weizhao Hu, Bibo Wang, Richard K. K. Yuen, Yuan Hu
Summary: This study improves the flame retardancy and mechanical properties of PBAT by synthesizing a phosphorus-containing intercalator and mixing it into the PBAT matrix.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Tharan Gordon, Michael R. Wisnom, Byung Chul Kim
Summary: Thickness tapering is a common strategy for efficient and lightweight composite structures, but it can introduce delamination sites. This study investigated the use of ply scarfing method to improve the compressive failure stress of tapered laminates made from thick unidirectional non-crimp fabrics. The results showed that ply scarfing suppressed delamination and increased the failure stress by 60%.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Xin Wang, Yiting Qu, Junlei Bai, Fujun Xu, Bin Ding, Xiaohua Zhang
Summary: A solution-based strategy is proposed to achieve a strong bond between fibers and matrix in powder materials, resulting in improved mechanical properties, thermal conductivity, and fracture strain of the composites. The method also offers advantages such as enhanced powder flowability and thermal stability.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Xing Zhou, Guosheng Wang, Dexiang Li, Qi Wang, Keming Zhu, Yaya Hao, Yueyang Xu, Neng Li
Summary: This study successfully synthesized polyurethane elastomer by using degraded products from waste PET, and fabricated composites with carbon nanotubes for strain sensors. The composites showed good mechanical and durability performance, indicating a potential method for recycling waste PET into valuable and functional materials.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Fei Peng, Tingting Shan, Rongrui Chen, Jiulong Shi, Di Liu, Guoqiang Zheng, Chaojun Gao, Kun Dai, Chuntai Liu, Changyu Shen
Summary: Janus polymer films with distinct surface performance and potential applications were successfully prepared by vacuum-assisted hot-compressing method and spray coating. These films exhibit decent actuation performance and rapid selfpowered sensing property, and can be used for real-time acetone monitoring system.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Biao Cheng, Huafeng Quan, Yuefeng Zhang, Dong Huang, Tongqi Li, Chong Ye, Xingming Zhou, Zhen Fan, Yafang Zhang, Ting Ouyang, Fei Han, Hongbo Liu, Jinshui Liu
Summary: In this study, a binary graphite network was constructed to improve the thermal conductivity and control the formation of micrometer-scale open pores in phase change composites. The developed composites showed a high thermal conductivity and phase change enthalpy, making them promising for thermal control in space optical-mechanical systems and other critical aerospace components.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Shihao Zuo, Fei Cheng, Guangming Yang, Jiangzhou Li, Yongjun Deng, Guangjun Gou, Xuejun Cui, Yunsen Hu, Xiaozhi Hu
Summary: Micro-arc oxidation (MAO) treatment was used to modify aluminum (Al) alloys in order to improve bond strength with carbon fiber reinforced polymer (CFRP). The treatment successfully created a porous surface with better hardness, roughness, and wetting, and introduced resin pre-coating (RPC) and carbon nanotube (CNT) fiber bridging to improve the bonding interface. The combined treatments significantly increased the bond strength by up to 156.1%, indicating the feasibility of MAO as an alternative method for manufacturing high-performance Al-CFRP composites in industrial production.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
James Kratz, Christophe Paris, Karolina Gaska, Vincent Maes, Ivana Partridge, Philippe Olivier
Summary: Faster heating rates and higher process temperatures can reduce the total process time while achieving the same degree-of-cure. Thermal analysis shows that thermoplastic interleaf particles melt at the recommended curing temperature. A short dwell at a lower temperature can prevent the mixing of thermoplastic particles and thermoset pre-polymer.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Thomas Maierhofer, Evripides G. Loukaides, Craig Carr, Chiara Bisagni, Richard Butler
Summary: Joining thermoset composites via resistance welding provides an efficient method for aerospace structures with benefits such as high-volume manufacturing and simplified surface preparation. The influence of welding parameters on joint performance is assessed using Mode I fracture toughness testing. A Bayesian approach is employed to select high-performance parameters.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Jiangan You, Ling Cai, Ronghua Yu, Haiping Xing, Jian Xue, Ying Li, Zhiwei Jiang, Dongmei Cui, Tao Tang
Summary: In response to the global environmental pollution crisis caused by waste plastics, recyclable design is an effective solution. A CPVC/PUA nanocomposite foam was developed using the plasticizing-foaming-reinforcing strategy, combined with catalytic carbonization. The foam exhibited high expansion ratio, robustness, solvent resistance, flame-triggered shape memory effect, and ablation resistance. The foam could be directly upcycled into functional carbon foam with attractive electromagnetic interference shielding performance.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Siyao Chen, Zhiyu Chen, Yangling Ou, Junwei Lyu, Junning Li, Xiangyang Liu, Yang Liu
Summary: In this study, we demonstrated the significant effect of composite interface on temperature increase in electrical heaters. By selectively fluorinating the outer walls of carbon nanotubes and compositing them with cellulose nanofibers, improved interfacial phonon diffusion was achieved, leading to a higher temperature increase rate.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Yanjun He, Agnieszka Suliga, Alex Brinkmeyer, Mark Schenk, Ian Hamerton
Summary: A new thermoset resin system based on a polybenzoxazine blend showed good performance under high ATOX irradiation. It reduced erosion yield by forming a silicon-rich surface layer and improved the mechanical properties of CFRP laminates.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)