Article
Engineering, Manufacturing
Jia Ge, Wenchang Zhang, Ming Luo, Giuseppe Catalanotti, Brian G. Falzon, Colm Higgins, Dinghua Zhang, Yan Jin, Dan Sun
Summary: Carbon-fibre-reinforced-polyetherketonketone (CF/PEKK) has gained popularity in the aviation industry due to its self-healing properties and ease of recycle and repair. However, little is known about the machining performance of CF/PEKK and there is a lack of optimization study to minimize hole damage and improve production efficiency. This study presents the first multi-objective optimization study for CF/PEKK drilling. A hybrid optimization algorithm combining Non-dominated Sorting Genetic Algorithm-II (NSGA-II) and Techniques for Order of Preference by Similarity to Ideal Solution (TOPSIS) is used to obtain Pareto solutions and rank them based on their closeness to ideal solutions. Experimental validation shows that the proposed method achieves 91.5-95.7% prediction accuracy and effectively controls delamination and thermal damage within acceptable limits. The significantly different optimal drilling parameters for CF/PEKK compared to CF/epoxy are attributed to the thermoplastic nature of CF/PEKK and its unique thermal/mechanical interaction characteristics during machining.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Engineering, Manufacturing
Mengyuan Hao, Jun Wang, Runguo Wang, Min Gong, Liang Zhang, Dongrui Wang, Yonglai Lu, Liqun Zhang, Xiang Lin
Summary: The mechanical dependence of 3D-printed thermoplastic polyurethane (TPU) reinforced with continuous carbon fibres (CCFs) on selected printing conditions was investigated. The study evaluated the impact of layer thickness, printing speed, and layer number on the tensile, flexural, and cryo-impact properties of the printed specimens. Results showed significant improvements in tensile yield stress and flexural strength when using CCFs reinforcement, with preimpregnated CCFs (PCCFs) providing the highest enhancement. The structure-property relationship was established through interface microstructure detection and simulation.
VIRTUAL AND PHYSICAL PROTOTYPING
(2023)
Article
Materials Science, Multidisciplinary
Ming Lei, Shuailong Ren, Shiyu Wang, Zeang Zhao, Jinyou Xiao, Lihua Wen, Xiao Hou
Summary: In this study, a multiscale model was developed to investigate the formation and failure of thermoplastic interfaces. By considering the reptation behavior and chain scission of polymer chains, the evolution of interface strength during composite welding process was successfully predicted.
MECHANICS OF MATERIALS
(2022)
Article
Engineering, Mechanical
Sandino Torres, Roberto Ortega, Pablo Acosta, Edisson Calderon
Summary: This study focuses on the application of single point incremental forming (SPIF) process to a composite sheet combining a biodegradable thermoplastic matrix and linen fibers. Experimental results show that using controlled heat can improve material formability and allow for closer manipulation to the glass transition temperatures of the material.
STROJNISKI VESTNIK-JOURNAL OF MECHANICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Patricia Garcia-Munoz, Paul Henri Alle, Calogera Bertoloni, Alvaro Torres, Maria Ulagares de la Orden, Joaquin Martinez Urreaga, Marie-Antoinette Dziurla, Fernando Fresno, Didier Robert, Nicolas Keller
Summary: The study investigates the reliability and quantifiability of a wide range of characterization and analytical tools in monitoring the mineralization process of polystyrene nanoparticles. The immobilized reaction mode is found to be superior to the slurry mode due to the absence of restrictive nanoparticulate photocatalyst. Direct imaging and light-scattering characterization provide incomplete and irrelevant data due to the change in polystyrene substrate morphology. TOC analysis remains the most suitable and reliable technique for monitoring and quantifying the mineralization process of polystyrene nanoparticles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Polymer Science
Mayu Morita, Yutaka Oya, Nobuhiko Kato, Kazuki Mori, Jun Koyanagi
Summary: The atomistic-scale mechanisms affecting the interfacial stability of a thermoplastic polymer/graphene oxide interface were investigated using molecular dynamics simulations. The stability order of thermoplastic polymers with modified/functionalized graphene oxide was found to be opposite to their charge bias, and influenced by the excluded-volume effect of functional groups.
Article
Engineering, Multidisciplinary
F. Lessard, M. Dube, L. Laberge Lebel
Summary: This study compares different die sequences using carbon-fibre and PEI commingled fibre to improve the impregnation quality of pultrudate. A model is proposed to predict the pulling force and degree of impregnation of a multi-die system, and a methodology is developed to adjust the material characteristics based on microstructure observations. The experimental results agree with the model predictions, indicating an opportunity for optimization of the pulling force and degree of impregnation relationship.
COMPOSITES PART B-ENGINEERING
(2022)
Review
Materials Science, Composites
Bernard Miranda Campos, Serge Bourbigot, Gaelle Fontaine, Fanny Bonnet
Summary: The recycling of thermoset-based composites is a challenging task. The use of thermoplastics as a replacement for thermosetting resins is an important step in addressing this issue, along with the use of green reinforcements. Recent developments in low-viscosity thermoplastic resins have enabled the production of thermoplastic matrix composites using the resin transfer molding (RTM) technique originally designed for thermosetting matrix composites.
POLYMER COMPOSITES
(2022)
Article
Engineering, Multidisciplinary
Gang Zhao, Tongzhou Chen, Xiwen Xia, Yi Zhao, Cheng Liu, Xigao Jian, Shouhai Zhang, Jian Xu
Summary: This study proposes the use of electrospinning technique to produce nanofiber films on stainless-steel heating elements for resistance welding of thermoplastic composites. The presence of nanofiber films enhances the lap shear strength and fatigue life of the joints, improving their mechanical interlocking property.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Engineering, Manufacturing
D. Tatsuno, T. Yoneyama, T. Kinari, E. Sakanishi, T. Ochiai, Y. Taniichi
Summary: Braid-press forming combines braiding and pressing techniques to successfully manufacture tubes without voids and with good flexural properties. Higher pressure helps to improve the performance of tubes, with future research focusing on productivity improvements and continuous tube manufacturing.
INTERNATIONAL JOURNAL OF MATERIAL FORMING
(2021)
Review
Polymer Science
Basheer A. Alshammari, Mohammed S. Alsuhybani, Alaa M. Almushaikeh, Bander M. Alotaibi, Asma M. Alenad, Naif B. Alqahtani, Abdullah G. Alharbi
Summary: Carbon fiber-reinforced thermoplastic polymers have various advantages such as high strength-to-weight ratio, high wear resistance, and recyclability, making them widely used in industrial applications. The focus of the study is on the superiority of carbon fiber-reinforced thermoplastic polymers over thermosetting and elastomer polymers, as well as the in-depth exploration of surface modification techniques.
Article
Polymer Science
Jialiang Qi, Lun Li, Yiqi Wang, Hang Gao
Summary: A study proposes an equivalent continuum mechanics model considering the temperature-force behavior of carbon fiber plain-woven thermoset prepreg, and validates the accuracy of the model through experiments. Results show that the predicted model has high accuracy and is consistent with the fold position and deformation trend observed in the experiments.
Article
Mechanics
A. Maier, N. Schramm, L. Kroll
Summary: This paper investigates the potential of using fiber-reinforced thermoplastic composites in high-volume car body structures and examines the interlaminar shear strength at different temperatures, as well as the influence of manufacturing technology. The results show a significant decrease in interlaminar shear strength with temperature increase, and conditioning has an impact on strength at lower temperatures.
COMPOSITE STRUCTURES
(2021)
Article
Materials Science, Composites
Goram Gohel, Somen K. Bhudolia, Kah Fai Leong, Pierre Gerard
Summary: This research investigates the damping response of hollow tubular structures using a novel acrylic liquid thermoplastic Elium resin and different carbon fiber reinforcement materials. The results show that the use of the new materials increases the damping of the structure, with carbon fiber reinforcement having a greater effect on damping enhancement. Additionally, the thickness of the tube has a positive effect on damping, while an increase in fiber volume fraction has a negative effect.
COMPOSITES COMMUNICATIONS
(2022)
Article
Engineering, Manufacturing
Mohammad Ghaedsharaf, Jean-Evrard Brunel, Louis Laberge Lebel
Summary: Thermoplastic braid-trusion is a composite manufacturing process that combines braiding and pultrusion of hybrid yarns. A multiscale numerical simulation methodology is introduced to accurately model complex morphological changes at macro, meso, and micro scales. The model predicts important parameters such as fiber volume fraction and local fiber orientation.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Mechanics
John Holmes, Silvano Sommacal, Zbigniew Stachurski, Raj Das, Paul Compston
Summary: The study combined DIC with mu CT and DVC to assess the deformation and damage of woven composites, showing that differences in loading direction and fiber waviness cause significant differences in surface topography, strain, and internal out-of-plane deformation. The techniques were effective for characterizing woven composite deformation and have potential for improving finite element simulations in the future.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Multidisciplinary
John Holmes, Silvano Sommacal, Raj Das, Zbigniew Stachurski, Paul Compston
Summary: This study investigates the deformation response of multi-ply woven composites at different angles by combining digital image correlation (DIC) and 3D micro-computed tomography (mu CT). Significant mechanical property variances and topographical/strain differences were observed between orientations due to layer alignment. Additionally, inter-tow and intra-tow shearing during off-axis extension and corresponding fiber reorientation were identified, highlighting the benefits of combining DIC and mu CT.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Materials Science, Composites
John Holmes, Raj Das, Zbigniew Stachurski, Paul Compston
Summary: A technique using digital image correlation (DIC) is proposed to examine the local out-of-plane topography of woven composites, improving defect and damage detection during deformation. Experimental results show additional insight into weave response and defect progression, including edge delamination, local fiber waviness, and undulating weave architecture.
COMPOSITES COMMUNICATIONS
(2022)
Article
Green & Sustainable Science & Technology
Di He, Hyung Chul Kim, Robert De Kleine, Vi Kie Soo, Alper Kiziltas, Paul Compston, Matthew Doolan
Summary: This study compares the environmental impact of recycling waste polymer powders on selective laser sintering (SLS) products and injection-molded components based on real-world data. The evaluation methods for environmental burden have a significant influence on the results. Recycling polymer waste can reduce the global warming potential and primary energy demand of the products, highlighting the importance of promoting a circular economy for improving environmental performance.
JOURNAL OF INDUSTRIAL ECOLOGY
(2022)
Article
Optics
V Zinnecker, S. Madden, C. Stokes-Griffin, P. Compston, A. Rode, L. Rapp
Summary: This study investigates large area laser ablation of steel in air at ambient pressure and compares the effects of different pulse durations. It is found that long pulses of 70 ns induce surface damage to the steel, while ultrashort pulses preserve the integrity of the steel structure.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Mechanics
S. Fazeli, C. Stokes-Griffin, J. Gilbert, P. Compston
Summary: This paper investigates the bend-twist coupling analysis of multi-layered stepped generally orthotropic composite beams subjected to mixed end-of-beam and mid-span supports. An analytical closed-form model was developed, and an experimental investigation was conducted to validate the results. The reliability and accuracy of the analytical model were demonstrated.
COMPOSITE STRUCTURES
(2022)
Article
Chemistry, Physical
Christopher Leow, Peter B. Kreider, Silvano Sommacal, Patrick Kluth, Paul Compston
Summary: Combining graphene with composites can provide tailored electrical and thermal properties for the aerospace sector. This study investigates the application of spray-deposited graphene suspension in carbon fiber/polyether ether ketone composites, and finds that the addition of graphene can enhance the electrical and thermal conductivity of the composites.
Article
Mechanics
Florian Roeper, Silvano Sommacal, Paul Compston, Juergen Tauchner, Markus Wolfahrt, Gerald Pinter
Summary: In this study, the post-impact behavior of bonded repairs for CFRP specimens was investigated. Tensile tests and micro-CT imaging were conducted to analyze the relationship between impact energy, post-impact mechanical properties, and extent of damage. 2D and 3D visualization was used to present the results, and the individual bond constituents were identified and visualized in 3D representations using high-resolution images.
COMPOSITE STRUCTURES
(2023)
Review
Mechanics
John Holmes, Silvano Sommacal, Raj Das, Zbigniew Stachurski, Paul Compston
Summary: Digital image and volume correlation (DIC and DVC) are used to measure the deformation and damage behavior of composite materials. The heterogeneous nature of the composite microstructure results in complex local behavior that cannot be captured using traditional techniques. DIC and DVC offer significant advantages in monitoring this behavior for fiber-reinforced composite materials. The careful consideration of testing setup and approach is crucial for achieving accurate results.
COMPOSITE STRUCTURES
(2023)
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)
