Article
Engineering, Manufacturing
Talha J. Pirzada, Shraddha Singh, Robin De Meyere, Philip Earp, Marina Galano, T. James Marrow
Summary: The effects of different processing temperatures on Nextel 312 fiber SiCO ceramic matrix composite were studied, showing that processing at 950 degrees Celsius or above provided a combination of high effective elastic modulus, good resistance to mechanical damage from tensile strain, and good thermal stability.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Manufacturing
Marco Riva, Alessandro Airoldi, Antonio Maria Caporale, Lorenzo Cavalli, Mario De Stefano Fumo
Summary: This study investigates the interlaminar properties of a C/SiC composite produced by Liquid Silicon Infiltration through experiments and numerical analysis. Experimental methods are introduced to obtain pre-cracks with sharp tips at precise locations, and specimens with different thicknesses are used to study the effects of bending stress states in the delamination process. Numerical techniques are utilized to identify the properties of tri-linear Cohesive Zone Models for simulating delamination, without additional assumptions or testing. The study also considers fiber bridging effects and evaluates process zone lengths using different experimental, analytical, and numerical methods. Overall, the study provides qualitative insights into the delamination process of cost-affordable long fiber reinforced C/SiC laminates, and proposes an experimental and numerical protocol that takes into account the scattering of material properties.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Materials Science, Ceramics
Hao Li, Munan Lu, Yufeng Xue, Wenfeng Qiu
Summary: The continuous NextelTM 720 fiber-reinforced zirconia/alumina ceramic matrix composites (CMCs) were prepared by slurry infiltration process and precursor infiltration pyrolysis (PIP) process. The introduction of sub-micron zirconia powders improved the sintering activity, thermal resistance, and mechanical properties of the CMCs. The CMC sample achieved a high flexural strength of 200 MPa after one infiltration cycle of alumina preceramic polymer and thermal treatment.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Clifton H. Bumgardner, Frederick M. Heim, David C. Roache, Morgan C. Price, Christian P. Deck, Xiaodong Li
Summary: A novel methodology using in situ stereoscopic digital image correlation was employed to assess the fracture mechanics of SiC/SiC ceramic matrix composites. The study revealed that cracks propagate along the specimen length during hermeticity testing, and that heat treatment in open air results in decreased flexural properties and brittle failure.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Longbiao Li
Summary: Under monotonic and cyclic tensile loading, stochastic brittle fragmentations significantly influence the mechanical behavior of fiber-reinforced ceramic-matrix composites (CMCs). Experimental and theoretical models were used to study the synergistic effects of matrix and fiber fragmentations on loading/unloading hysteresis behavior. The study also analyzed the impacts of fiber volume fraction and strength on the hysteresis loops of CMCs, providing valuable insights for composite material design optimization.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Antonio Vinci, Luca Zoli, Laura Silvestroni, Nicola Gilli, Diletta Sciti
Summary: A significant improvement in mechanical performance was achieved in ZrB2-based ultra-high temperature ceramic matrix composites (UHTCMCs) through the introduction of rare earth oxides, resulting in the formation of ternary boro-carbides of general formula REB2C2. This study investigated the potential routes for synthesizing YB2C2 phases at UHTC sintering temperatures by using different boron sources, and analyzed their microstructure using SEM, XRD, and TEM. The findings showed that the mixture with B4C exhibited the highest selectivity for the formation of YB2C2, and a long carbon fibre reinforced YB2C2 ceramic composite with a flexural strength of 380 MPa was successfully fabricated. The chemical stability of these materials in air was also assessed.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Engineering, Manufacturing
Lukas Wagner, Georg Puchas, Walter Krenkel, Stefan Schaffoener
Summary: This study investigated the influence of porosity on the mechanical properties of a NextelTM 610/Al2O3-ZrO2 composite. The results showed that as the porosity decreased, the bending strength and strain of the material also decreased. Additionally, the material lost its damage-tolerant behavior at a submicron porosity of 37%.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Engineering, Manufacturing
Antonio Vinci, Laura Silvestroni, Nicola Gilli, Luca Zoli, Diletta Sciti
Summary: This study investigates the effects of rare earth oxides on carbon fibre-ZrB2/SiC composites and finds that the addition of Y2O3, La2O3, and CeO2 improves the densification of the material, while Sc2O3 promotes the formation of solid solutions in the matrix. All the composites exhibit improved mechanical properties, but CeO2 is detrimental to the long-term structural stability.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Materials Science, Ceramics
Yuelong Tian, Jidong Hu, Zhihai Feng, Xin Sun, Yuan Li, Yifen Xu
Summary: In this study, carbon fibers reinforced SiCN ceramic matrix composites (C/SiCN) were prepared using homemade polysilazanes (PSN-T03) via PIP. It was found that SiCN ceramics began to lose weight at 1400 degrees C, leading to a collapse in the mechanical properties of C/SiCN composites above this temperature.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Ziqing Hao, Xiaohui Ji, Linlin Deng, Hongjun Ke, Liu Liu
Summary: This study presents a cost-effective experimental method for measuring multiple mechanical properties of carbon fiber reinforced modified epoxy matrix composites at elevated temperatures. The results demonstrate variations in mechanical properties as the temperature rises to 150 degrees C.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Guoqiang Yu, Chuyang Xie, Jinkang Du, Zheng Ni, Lulu Chang, Xiguang Gao, Yingdong Song
Summary: This paper realizes the in-plane shear mechanical experiments of ceramic matrix mini-composites (CMMC) by overcoming various difficulties. The stress-strain responses of CMMC with different matrix volume fractions were obtained, and it was found that the response is highly nonlinear and the elastic modulus and strength are positively correlated with the matrix volume fraction. The factors affecting the micro-region shear deformation measurement based on digital image correlation (DIC) are quantitatively analyzed, and solutions are discussed. The evolution of the shear strain field effectively captures the initiation and propagation of matrix cracks.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Engineering, Manufacturing
Xinyuan Lv, Fang Ye, Laifei Cheng, Litong Zhang
Summary: Whisker-reinforced ceramic matrix composites (CMCs) are emerging materials for structural applications at high temperatures. This review presents a composite preparation route that allows for scalability and industrialization. It discusses the sequential preparation of whisker, whisker preform, interphase, and matrix, and the different synthesis methods and morphology control mechanisms of whiskers (SiCw, Si3N4w, Al2O3w). Directions for future development are also proposed.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Materials Science, Ceramics
Kazuya Shimoda, Tatsuya Hinoki
Summary: Unidirectional SiCf/SiC-matrix composites with a pyrocarbon interface were prepared by hot-pressing SiC nano powder at high temperature (1900 degrees C) and pressure (20 MPa). The volume fraction of SiC reinforcing fiber significantly affected densification and mechanical properties, with improvements in mechanical properties observed with an increase in fiber volume fraction up to a certain level, beyond which the ultimate strength degraded due to open porosity and fiber damage.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Engineering, Manufacturing
Yuekai Yan, Hui Mei, Minggang Zhang, Zhipeng Jin, Yuntian Fan, Laifei Cheng, Litong Zhang
Summary: This paper investigates the interfacial bonding issue in continuous fiber 3D printed ceramics and proposes a method to control the interface through chemical vapor infiltration. Experimental results show that controlling the interface and filling the fiber bundles can improve the mechanical properties of ceramic materials.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Engineering, Mechanical
Longbiao Li
Summary: A micromechanical approach was developed to predict crack opening displacement (COD) of fiber-reinforced ceramic-matrix composites under tensile loading, considering matrix fragmentation and fiber/matrix interface debonding. Relationships between composite constituent properties, COD, and matrix fragmentation were established, and the effects of various factors on crack behavior were analyzed, providing insights into the mechanisms governing crack initiation and propagation in such composite materials.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2021)
Article
Construction & Building Technology
M. Neji, F. Bernachy-Barbe, C. Imbert, S. Poyet, B. Bary
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2020)
Article
Chemistry, Physical
Fabien Bernachy-Barbe, Nathalie Conil, William Guillot, Jean Talandier
APPLIED CLAY SCIENCE
(2020)
Correction
Construction & Building Technology
Fabien Bernachy-Barbe
MATERIALS AND STRUCTURES
(2020)
Article
Materials Science, Characterization & Testing
R. Vargas, A. Tsitova, F. Bernachy-Barbe, B. Bary, R. B. Canto, F. Hild
Article
Construction & Building Technology
E. Kangni-Foli, S. Poyet, P. Le Bescop, T. Charpentier, F. Bernachy-Barbe, A. Dauzeres, E. L'Hopital, M. Neji, J-B d'espinose de Lacaillerie
CEMENT AND CONCRETE RESEARCH
(2020)
Article
Chemistry, Physical
Sarra Mezhoud, Benjamin Le Droumaguet, Patrick Aimedieu, Vincent Monchiet, Michel Bornert, Daniel Grande
Summary: Doubly porous polymeric materials were prepared using a double porogen templating approach with 2-hydroxyethyl methacrylate (HEMA). The use of different sizes of sieved NaCl particles and isopropanol as porogenic solvent was crucial to the preparation process. Results showed that SPS-mediated sintering of macroparticles resulted in higher porosity ratios and specific surface areas compared to non-sintered particles, highlighting the importance of macroporogen packing. Further imaging analysis confirmed these findings, while the size of macroporogens also played a significant role in determining the porosity features. Swelling behavior of the materials was also studied, revealing high water uptake in materials with interconnected higher porosity levels.
COLLOID AND POLYMER SCIENCE
(2021)
Article
Construction & Building Technology
Fabien Bernachy-Barbe, Takwa Sayari, Veronique Dewynter-Marty, Valerie L'Hostis
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Materials Science, Characterization & Testing
Fabien Bernachy-Barbe, Kevin Alvarado
Summary: To demonstrate the safety of engineered barriers for radwaste geological repositories, detailed characterisations of bentonite hydro-mechanical behavior are essential. X-ray computed tomography was used to measure the full displacement field and water content in a resaturated bentonite sample. The study revealed heterogeneous swelling and a final solid density gradient in the direction of water flow.
Article
Chemistry, Physical
Fabien Bernachy-Barbe
Summary: The study focuses on understanding the coupled processes of swelling and water transport in bentonite at the laboratory scale. Through detailed X-ray microtomography measurements of samples saturated under isochoric conditions, the study reveals the complex evolution of water and clay transport, permeability, mechanical properties, and friction properties. The research highlights the significant impact of initial density heterogeneities on the saturation process and the final state of the samples, as well as the role of wall friction in hydration kinetics.
APPLIED CLAY SCIENCE
(2021)
Article
Construction & Building Technology
E. Kangni-Foli, S. Poyet, P. Le Bescop, T. Charpentier, F. Bernachy-Barbe, A. Dauzeres, E. L'Hopital, J-B d'espinose De Lacaillerie
Summary: This study investigated the reactive processes of atmospheric carbonation on cementitious materials. It found that portlandite played a protective role in limiting C-S-H decalcification and reducing carbonation shrinkage and cracking.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
A. Tsitova, F. Bernachy-Barbe, B. Bary, S. A. Dandachli, C. Bourcier, B. Smaniotto, F. Hild
Summary: This study utilized the FE-DVC method with mechanical regularization to study crack propagation in mortar, with a realistic 3D mesh constructed based on high resolution X-ray tomography and in situ three-point flexure loading. The results showed that strain heterogeneities and inelastic strain localization due to cracks could be captured, and relaxing mechanical regularization in damaged elements improved the trustworthiness of displacement measurements. Through estimation of crack opening displacements and characterization of crack morphology, insights into the damage processes at the mesoscale were provided.
EXPERIMENTAL MECHANICS
(2022)
Article
Engineering, Geological
Liliana Gramegna, Fabien Bernachy-Barbe, Frederic Collin, Jean Talandier, Robert Charlier
Summary: Various nuclear waste disposal designs utilize bentonite-based materials to seal underground structures, with studies focusing on the hydro-mechanical processes during water saturation. Experimental tests and numerical modeling strategies have been employed to analyze the role of pore size distributions in different forms of bentonite, showing good agreement between experimental and numerical outcomes.
ENGINEERING GEOLOGY
(2022)
Article
Engineering, Mechanical
Aliaksandra Tsitova, Fabien Bernachy-Barbe, Benoit Bary, Christophe Bourcier, Francois Hild
Summary: The identification of fracture properties of mortar was achieved through numerical analyses of two in situ mesoflexural tests on small-scale specimens. The experimental kinematic fields were measured by processing the reconstructed volumes via Digital Volume Correlation. The simulated fracture paths and ultimate forces were consistent with the experiment thanks to representative microstructure and boundary conditions.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Xavier Regal, Gwendal Cumunel, Michel Bornert, Marc Quiertant
Summary: In this study, the free vibration of a beam triggered by a shock is investigated using a high-speed camera and digital image correlation. The beam displacement fields are deduced from the images and the modal parameters are computed using a continuous wavelet transform method. The results obtained with this method are compared with those obtained using accelerometers and the beam theory.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Jaroslava Zatloukalova, Veronique Dewynter-Marty, Jan Zatloukal, Karel Kolar, Fabien Bernachy-Barbe, Petr Bezdicka, Petr Konvalinka
JOURNAL OF NUCLEAR MATERIALS
(2020)
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)
