Article
Mechanics
Miguel Marco, Ricardo Belda, Maria Henar Miguelez, Eugenio Giner
Summary: This study analyzed the mechanical properties of various lattice and porous structures using the finite element method, showing that different cavity distributions have a significant impact on the mechanical behavior of the structures.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
John Susainathan, Enrique Barbero, Sonia Sanchez-Saez, Arthur Cantarel, Florent Eyma
Summary: An explicit numerical model is developed to study the impact behavior of a new composite eco-structure. The model accurately predicts the stiffness degradation and damage of wooden plies by simulating the elastic response and incorporating a stress-based modified Hashin-3D damage model. Validation with experimental results shows a good agreement and higher accuracy.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
T. Nagoshi, Y. Harada, S. Nakasumi, N. Yamazaki, K. Hasegawa, K. Takagi, W. Peng, G. Fujii, M. Ohkubo
Summary: Cohesive failure in the epoxy adhesive layers of carbon-fiber-reinforced plastic (CFRP) joints is a perplexing issue. This study reveals that micrometer-scale defects may contribute to the occurrence of cohesive failure and proposes a new phenomenological model to explain this behavior. These findings are of significant importance for enhancing the reliability of CFRP components.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Engineering, Manufacturing
A. Cocchi, O. Montagnier, C. Hochard
Summary: Flat hourglass specimens were used to assess the compressive behaviour of FRP using two testing techniques. The hourglass shape ensured failure at the center of the specimen and minimized stress concentration. Bending tests and DIC measurements were performed, with a proposed procedure for calculating bending moment validated in the presence of large displacements. Two different materials were tested and compared, and compression tests were also carried out to compare hourglass specimens to standardized dog-bone samples. The two testing techniques were analyzed and compared for their effectiveness.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Materials Science, Multidisciplinary
K. Sithole, C. L. Taylor, J. P. Rouse, C. J. Hyde
Summary: The study aims to determine the capability of the small punch test in measuring the mechanical properties of CoNiCrAlY, a two-phase bond-coat material in thermal barrier coatings. It utilizes a multi-scale modeling approach, developing 2-dimensional representative volume elements and finite element models for the small punch test. The obtained Young's moduli and Poisson's ratios from the representative volume elements are compared with analytical homogenization methods. The results suggest that the small punch test is influenced more by material yield properties rather than variations in elastic behavior.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Ting-Yu Su, Hao-Yuan Tang, Jason Shian-Ching Jang, Chih-Hwa Chen, Hsiang-Ho Chen
Summary: Collaboration between material science and mechanical engineering has led to the development of a new suture anchor design with optimized structural performance. The study emphasizes the importance of material properties in achieving better clinical outcomes.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Manufacturing
Johann Koerbelin, Nilas Junge, Bodo Fiedler
Summary: The study implemented temperature-dependent material properties into a continuum-damage-based (CDM) model to describe the progressive failure of CFRP under temperature influence. Simulation results showed that the model accurately represented the damage from low-velocity impact at different temperatures and impact energies, and that increased interlaminar ERR did not reduce delamination size but affected intralaminar damage and overall structural response. Compression after impact (CAI) simulations aligned well with experimental data, highlighting the importance of temperature in residual strength over impact energy. The proposed approach and model can predict CFRP behavior under temperature influence and complex load cases.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Multidisciplinary
Aniello Riccio, Andrea Sellitto, Antonio Garofano, Giancarlo Ingenito, Mauro Zarrelli
Summary: This study aims to investigate the mechanical behavior of a repaired aeronautical composite stiffened panel subjected to compressive loading conditions through numerical and experimental methods. Finite element models were introduced in the ABAQUS FEM environment to simulate the mechanical behavior of the repaired panel. Experimental testing was also performed on the repaired panel to validate the numerical models. The validated numerical model was then used to analyze the compressive behavior of repaired stiffened panels with different patch stacking sequences and sizes to assess their influence on the panel's mechanical behavior.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Marco Lamberti, Ranieri Marinari, Andrea Mancini, Gianni Gadani, Antonino Pietropaolo, SRF Collaboration
Summary: The SORGENTINA-RF project aims to develop a 14 MeV neutron source through fusion reactions using a deuterium/tritium ion accelerator and a rotating target. The most promising application of this project is in the production of medical radioisotopes. Intense research on the design of the rotating target has been conducted, with aluminium alloy identified as the best material for meeting the critical requirements of the design. Thermo-mechanical analyses and numerical simulations have confirmed the target's ability to withstand operating conditions, and the study's outcomes have been implemented in the engineering solutions for the project's design.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Antonio Diogo Andre, Bruno Areias, Ana Margarida Teixeira, Sergio Pinto, Pedro Martins
Summary: Low urinary tract dysfunctions and symptoms (LUTS) can affect both men and women, with the occurrence increasing with age. Urinary incontinence (UI) is a common dysfunction characterized by involuntary loss of urine. The mechanical behavior of the porcine urethra has been studied as a potential replacement for the human urethra. The study compared the mechanical behavior of porcine and human urethra using numerical simulations and experimental data.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Physical
Michaela Stamborska, Juraj Lapin, Kateryna Kamyshnykova
Summary: The preparation, microstructure, and mechanical behaviour of Ni3Al-based superalloy were studied. It was found that the heat-treated alloy had a uniform distribution of MC carbides and γ'(Ni3Al) precipitates. The equivalent plastic strain distribution was calculated using finite element analysis, and a correlation curve between Vickers microhardness values and equivalent plastic strains was proposed to quantify the local strain hardening state.
Article
Ecology
Daniel Honfi, Johan Sjostrom, Chiara Bedon, Marcin Kozlowski
Summary: Despite extensive research and applications, the use of glass material in buildings remains challenging due to its inherent brittleness and characteristic features such as sensitivity to stress concentrations, reduction in strength over time and from temperature, and breakage due to thermal gradients. This paper presents the results of a test series on monolithic glass panes under radiant heating and discusses the potential of thermo-mechanical numerical models for experimental feedback.
Article
Chemistry, Multidisciplinary
D. Cocchi, A. Pirondi, T. M. Brugo, M. Boi, G. Graziani, N. Baldini, A. Zucchelli
Summary: Nature has inspired the engineering of structural and smart materials in recent decades. The development of nano-vascularization requires a better understanding of the mechanical behavior of these materials. This work presents a multiscale methodology to predict the macroscopic properties of nano-vascularized materials and validates it experimentally.
Article
Materials Science, Composites
Johannes Reiner, Navid Zobeiry, Reza Vaziri
Summary: A simple and efficient finite element modelling approach is presented for simulating the residual strength of carbon fiber reinforced composite laminates after impact, with results showing reasonable predictions for different laminate structures and errors ranging from 10% to 30%.
COMPOSITES COMMUNICATIONS
(2021)
Article
Polymer Science
Pooria Khalili, Mikael Skrifvars, Ahmet Semih Erturk
Summary: The mechanical properties of regenerated cellulose fabric-reinforced composite were studied, showing higher tensile strength and ductility compared to natural fibre counterparts. Simulation was used to predict the behavior of the bio-composite, including modeling the structural behavior of a car door panel.
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)