Article
Materials Science, Composites
Jeffrey J. Kim, Avery D. Brown, Charles E. Bakis, Edward C. Smith
Summary: The study aims to explore hybrid CNT - carbon/epoxy composites for high damping and stiffness, and the system with highly aligned CNT yarns treated with a non-ionic surfactant, located at the interlayers and oriented along the loading direction, shows superior damping and stiffness characteristics.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Composites
Mingliang Wu, Tianwen Luo, Junjie Lu, Yueqiong Wang, Baofeng Lin, Chuanhui Xu
Summary: Multifunctional and easily-controlled self-healing rubbers with high performance were developed in this study. The composites showed satisfactory mechanical strength, photothermal conversion, and accurate self-healing. The self-healing capacity was realized through the construction of an ionic supramolecular network, and the photothermal effect of carbon nanotubes effectively promoted the healing process. These high-performance self-healing rubbers have great potential in various applications.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Composites
Yichuan Zhang, Zhipeng Li, Guangming Chen, Yue Hu, Liang Deng
Summary: In this study, the trade-off between thermoelectric (TE) and mechanical (ME) performances in flexible polycarbonate (PC)/single-walled carbon nanotube (SWCNT) composites was successfully decoupled via interfacial adjustment. The obtained composite exhibited improved TE and ME performances by enhancing interfacial affinity and electrical conductivity.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Multidisciplinary
Nuo Xu, Shaohua Chen, Yingze Li, Naiyu Jiang, Ting Zheng, Nick Goossens, Jef Vleugels, Dongxing Zhang, David Seveno
Summary: The mechanical properties of CF/PEEK composites were improved by grafting a complex sizing agent containing MXene, CNT, and PEI onto the CF surface. The synergistic effects of these materials significantly enhanced the interfacial properties, leading to increased flexural strength, flexural modulus, and interlaminar shear strength. Additionally, a new coating strategy changed the interfacial failure mechanism.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Nanoscience & Nanotechnology
Ping Tang, Zijian Zhang, Chenxin Guo, Shaohua Zeng, Pengpeng Chen, Ying Xu, Wangyan Nie, Yifeng Zhou
Summary: Carbon nanotubes have great potential for use in microelectronic packaging due to their excellent thermal conductivities. However, their high electroconductibility and poor radial conductivity limit their application in insulating materials. In this study, a heterostructured brushlike hybrid was prepared by anchoring amine-functionalized multiwalled carbon nanotubes onto insulating montmorillonite. The resulting composites exhibited improved thermal conductivity, mechanical properties, and thermal stability, providing a promising strategy for fabricating polymer composites.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Haizhou Liu, Ying Xu, Xiaodong Zhao, Dong Han, Fei Zhao, Qiaowen Yang
Summary: This article introduces a novel lightweight foam material (CGF) composed of carbon nanotubes (CNTs) and reduced graphene oxide (rGO) for electromagnetic interference (EMI) shielding. The addition of 20 wt% CNTs expands the conductive network and increases the conductivity of the CGF material by 274.4%. The CGF material exhibits excellent EMI shielding effectiveness (SE) of 71.4 dB at a low mass per unit area of 12.5 mg·cm(-2). The CGF material also shows high comprehensive performance in terms of SE divided by density (SED) and mass per unit area (SEMA) values.
Article
Materials Science, Composites
Avery D. Brown, Charles E. Bakis, Edward C. Smith
Summary: The objective of this study is to evaluate the dynamic mechanical properties of a hybrid carbon fiber reinforced epoxy composite laminate containing CNT-rich interlayers. The results show that the surface treatments and alignment of the CNTs have significant effects on the mechanical properties of the composite material, and both surface treatments and alignment can increase the loss modulus and storage modulus of the composite material.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Composites
Hao Sun, Tong Ji, Hongjie Bi, Min Xu, Liping Cai, Maurizio Manzo
Summary: This study designed and fabricated a CS/CNT/NR composite with high thermal conductivity by incorporating 1D carbon nanotubes into 3D wood-derived carbon scaffold, demonstrating a synergistic effect between CS and CNT for forming a heat percolation network. The unique 3D interconnected structure of the composite ensures high-speed heat transport and promotes the use of renewable materials for efficient heat dissipation in thermal management materials.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Mechanics
Taegeon Kil, D. W. Jin, Beomjoo Yang, H. K. Lee
Summary: This study proposes a micromechanical model that considers the curviness of carbon nanotubes and the interfacial resistivity in predicting the electrical conductivity of polymeric composites. Through numerical studies and the use of a genetic algorithm to optimize model parameters, the model closely simulates the effective electrical conductivity of the composites, demonstrating credible accuracy in comparison with experimental measurements.
COMPOSITE STRUCTURES
(2021)
Article
Polymer Science
Boyao Wang, Bin He, Zhanwen Wang, Shengli Qi, Daijun Zhang, Guofeng Tian, Dezhen Wu
Summary: The hybrid fiber-reinforced composites showed nearly 50% increment in Charpy impact strength and significantly improved flexural performance compared with carbon fiber reinforcement alone. The flexural properties were greatly affected by the stacking sequence, with specimens containing carbon fiber in the compressive sides having higher flexural strength and those with a sandwich-like structure displaying a higher flexural modulus.
Article
Chemistry, Physical
Bo Song, Zhide Liu, Tingting Wang, Li Wang
Summary: By uniformly grafting CNTs onto PBO fiber composites at a high density, the surface wettability and interfacial interaction were improved, resulting in significantly increased IFSS and ILSS values in the modified composites. The mechanical properties of the interphase were enhanced, leading to effective transfer of interfacial load and improved structural stability, with a substantial increase in impact strength observed in the modified composites.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Materials Science, Composites
Ana De Leon, Mehul Tank, Rebekah Sweat
Summary: This paper introduces a horizontal mold and geometry matched testing fixture for manufacturing composite samples for pullout tests in large quantity batches. Using an open-face mold design, it can accommodate matrices with different viscosities and solve the problem of testing nanomaterial and micromaterial interfaces. Experimental results show that changing matrices significantly affects the results of IFSS.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Zheqi Peng, Xin Wang, Lining Ding, Zhishen Wu
Summary: This study adopts a bundle-based concept to model unidirectional hybrid fiber-reinforced polymer composites and conducts a parametric study and optimization framework development. The results show that a dispersed arrangement of fiber bundles can delay damage propagation and enhance overall performance.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Composites
E. Pimentela, P. Costa, C. R. Tubio, J. L. Vilaca, C. M. Costa, S. Lanceros-Mendez, D. Miranda
Summary: Flexible sensor devices are in high demand for new and improved health treatments, particularly for neurogenic bladder dysfunction. Polymer composites based on different matrices (CMC, SEBS, and PVA) and varying concentrations of multiwalled carbon nanotubes (CNT) have been developed for catheter medical device application. These composites demonstrate excellent electrical and mechanical properties, with high conductivity and piezoresistive response.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Composites
Qing Wu, Qinqin Wan, Xin Yang, Fen Wang, Huanhuan Bai, Jianfeng Zhu
Summary: The study introduces a novel strategy of incorporating a ternary organic material on fiber surface to increase the interfacial shear strength of pitch-based carbon fiber composites. By forming a solid connection and enhancing surface energy, a synergistic hybrid network is created, leading to a significant increase in interfacial shear strength. The findings provide unique insights for addressing the weak interface in pitch-based carbon fiber composites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Multidisciplinary
Theodoros C. Rousakis, Maria E. Saridaki, Soultana A. Mavrothalassitou, David Hui
COMPOSITES PART B-ENGINEERING
(2016)
Article
Engineering, Multidisciplinary
Garyfalia G. Triantafyllou, Theodoros C. Rousakis, Athanasios I. Karabinis
COMPOSITES PART B-ENGINEERING
(2018)
Article
Engineering, Multidisciplinary
Theodoros C. Rousakis
COMPOSITES PART B-ENGINEERING
(2018)
Article
Engineering, Multidisciplinary
Theodoros C. Rousakis, Georgios D. Panagiotakis, Emmanouela E. Archontaki, Alexandros K. Kostopoulos
COMPOSITES PART B-ENGINEERING
(2019)
Article
Engineering, Multidisciplinary
Evgenia Anagnostou, Theodoros C. Rousakis, Athanasios I. Karabinis
COMPOSITES PART B-ENGINEERING
(2019)
Article
Engineering, Multidisciplinary
Renyuan Qin, Huali Hao, Theodoros Rousakis, Denvid Lau
COMPOSITES PART B-ENGINEERING
(2019)
Article
Polymer Science
Theodoros Rousakis, Alper Ilki, Arkadiusz Kwiecien, Alberto Viskovic, Matija Gams, Petra Triller, Bahman Ghiassi, Andrea Benedetti, Zoran Rakicevic, Camilla Colla, Omer Faruk Halici, Boguslaw Zajac, Lukasz Hojdys, Piotr Krajewski, Fabio Rizzo, Vachan Vanian, Anastasios Sapalidis, Efthimia Papadouli, Aleksandra Bogdanovic
Article
Chemistry, Multidisciplinary
Theodoros Rousakis, Vachan Vanian, Theodora Fanaradelli, Evgenia Anagnostou
Summary: This study focused on characteristic cases of recently tested real-scale RC framed wall infilled structures with innovative seismic protection through polyurethane joints or polyurethane-impregnated fiber grids, revealing suitable FE models and the unique features of interventions.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Civil
Lukasz Hojdys, Piotr Krajewski, Arkadiusz Kwiecien, Theodoros Rousakis, Vachan Vanian, Marcin Tekieli, Alberto Viskovic, Alper Ilki, Matija Gams, Zoran Rakicevic, Boguslaw Zajac, Aleksandra Bogdanovic
Summary: This paper presents the results of a shake table test on a nearly full-scale, 1-story reinforced-concrete spatial frame structure with masonry infill walls. The experiment focused on investigating the behavior of the infill walls under different excitation scenarios. Two methods of infill-RC frame protection, polyurethane resin flexible joints (PUFJ) and external fiber-reinforced polyurethane (FRPU) repair system, were studied. The results showed improved performance of the infill walls when protected with these innovative solutions.
JOURNAL OF COMPOSITES FOR CONSTRUCTION
(2023)
Article
Materials Science, Multidisciplinary
Evgenia Anagnostou, Theodoros Rousakis
Summary: This paper analytically examines the design criteria for the composite retrofit of reinforced concrete columns. The study utilizes a pseudo-dynamic three-dimensional finite element model to investigate critical design parameters and determine the seismic behavior of the columns. The findings provide important insights for adequate retrofit design.
Article
Chemistry, Physical
Martha Karabini, Emmanouil Golias, Theodoros Rousakis, Chris Karayannis
Summary: Beam-column connections are critical in the seismic behavior of RC structures. In this study, the seismic performance of insufficiently reinforced T beam-column connections with large beams is assessed. External FRP strengthening improves the performance of the joint. The research provides insight into retrofits for achieving different ductility levels under seismic loading and allows for future analytical refinements.
Article
Materials Science, Multidisciplinary
Athanasia K. Thomoglou, Martha A. Karabini, Dimitra V. Achillopoulou, Theodoros C. Rousakis, Constantin E. Chalioris
Summary: This study investigates the retrofitting of unreinforced masonry (URM) structures with textile-reinforced mortar (TRM) to enhance shear strength and shift the failure mode. Existing guidelines for composite retrofitting do not extensively cover TRM systems in masonry walls. The study provides a comprehensive review of literature on masonry walls strengthened with TRM jackets, evaluating different failure modes and comparing prediction models.
Article
Materials Science, Multidisciplinary
Theodoros Rousakis, Evgenia Anagnostou, Theodora Fanaradelli
Summary: This study focuses on developing 3D finite element models of composite retrofits in deficient reinforced concrete columns and frames to investigate critical cases of inadequate lap splices or corroded steel reinforcements, as well as the beneficial effects of external FRP jacketing to prevent premature failure and collapse. Additionally, it explores the effects of an innovative intervention including orthoblock brick infill walls and advanced seismic joints in RC frames. The research extends to critical cases of inadequate lap splices or corroded steel reinforcements in RC frames, with the advanced FE models showing promising results in comparison to experimental data.
Article
Engineering, Multidisciplinary
Garyfalia G. Triantafyllou, Theodoros C. Rousakis, Athanasios I. Karabinis
COMPOSITES PART B-ENGINEERING
(2017)
Article
Engineering, Multidisciplinary
Garyfalia G. Triantafyllou, Theodoros C. Rousakis, Athanasios I. Karabinis
COMPOSITES PART B-ENGINEERING
(2017)
Article
Engineering, Multidisciplinary
Keyu Zhu, Xitao Zheng, Jing Peng, Jiaming Sun, Ruilin Huang, Leilei Yan
Summary: This paper discusses the influence of multiple impacts on the compression strength of honeycomb sandwich structures with composite face sheets. It is found that the size of the impactor affects the turning point of the compression strength. Additionally, high impact energy leads to damage in the bottom face sheet and reduces the overall compression strength.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Danqian Wang, Yanfei Yue, Jueshi Qian
Summary: Magnesium Potassium Phosphate Cement (MKPC) as a binder for steel rebars shows improved corrosion resistance when subjected to carbonation, due to the increase in pH and the formation of a more protective oxide film.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Zhibin Li, Wenyu Wang, Pengcheng Xue, Xingyu Wei, Jian Xiong
Summary: This work proposes a design approach and manufacturing method for carbon fiber reinforced plastic (CFRP) corrugated sandwich truncated cones (CSTC) to improve their anti-debonding ability and ensure reliability. The study establishes theoretical models for CSTCs' stiffness and failure modes, which are verified through experiments and finite element analysis (FEA). The research reveals the effect of geometric parameters on failure modes and performs an optimal design for CSTC structures. The findings have significant implications for the design and application of lightweight CSTCs in constructions, such as launch vehicle adapters.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Mingyu Zhang, Lei Chu, Jiahua Chen, Fuxun Qi, Xiaoyan Li, Xinliang Chen, Deng-Guang Yu
Summary: This review summarizes the different structures and construction methods of fibrous membranes with asymmetric wettability. It also reviews the biological applications of these membranes and suggests future challenges.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
E. Mofakhami, L. Gervat, B. Fayolle, G. Miquelard-Garnier, C. Ovalle, L. Laiarinandrasana
Summary: This study investigates the effects of fibre concentration on the mechanical response of welded glass-fibre-reinforced polypropylene (GF-PP). Experimental observations reveal a significant reduction in weld ratio, up to 60%, indicating a decreased strength compared to the bulk material. Increasing fibre content in the welded material results in a decrease in stress at break and strain at the maximum stress. The use of DIC technique and X-ray microtomography further confirms the localized strain amplification in the welded zone due to the significant increase in fibre density.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Emad Pourahmadi, Farjad Shadmehri, Rajamohan Ganesan
Summary: This research compares the mechanical properties of laminates manufactured using automated fiber placement and conventional autoclave curing methods. The results show that laminates manufactured using automated fiber placement have a lower interlaminar shear strength compared to laminates reconsolidated using autoclave curing. A finite element simulation method is proposed to quantitatively analyze these differences.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Johnny Jakobsen, Benny Endelt, Fahimeh Shakibapour
Summary: This study proposes a new bolted/pinned joining method for composite applications, which improves load transfer by introducing a patch-type reinforcement. Experimental results demonstrate significant improvements in both static and fatigue load conditions compared to existing methods. Finite element simulations highlight the advantage of this method, as it creates a more efficient load-transferring mechanism through different stress distributions.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Gisele G. Cintra, Janine D. Vieira, Daniel C. T. Cardoso, Thomas Keller
Summary: This paper proposes a novel approach to assess multi-crack behavior in layered fiber-polymer composites. The generated Compliance and R-curves provide useful insights into understanding the multiple delamination process and allow for separate evaluation of strain energy release rate (SERR) for each crack. The developed cohesive zone model successfully simulates the failure process zone of three parallel cracks, showing good agreement between the numerical model and experimental results.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Renil Thomas Kidangan, Sreedhar Unnikrishnakurup, C. Krishnamurthy, Krishnan Balasubramaniam
Summary: The induction heating process can accurately identify fiber orientation and stacking order, making it a valuable tool for large-area inspection and quality control in manufacturing fiber-reinforced composites.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Sungjun Hwang, Yousoo Han, Douglas J. Gardner
Summary: Bleached Kraft pulp, unbleached Kraft pulp, and old corrugated cardboard pulp are suitable for producing cellulose nanofibril suspensions. Spray drying is a fast, simple, cost-effective, and scalable drying method. Spray-dried cellulose nanofibrils can be used as reinforcing materials in polypropylene matrices. The particle size of cellulose nanofibrils affects the material properties.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Mehdi Mahdavi, Abbas Zolfaghari
Summary: This study aims to improve the recovery forces of shape memory polymers (SMPs) through material extrusion additive manufacturing. By using glass fiber (GF) as reinforcement and manufacturing multi-layer composite specimens, it was found that PLA with 6.62% GF exhibited the best recovery force, which was further optimized through annealing heat treatment.
COMPOSITES PART B-ENGINEERING
(2024)
Review
Engineering, Multidisciplinary
Xiang Ao, Antonio Vazquez-Lopez, Davide Mocerino, Carlos Gonzalez, De-Yi Wang
Summary: The vulnerability of natural fibers to heat and fire poses a significant challenge for their substitution of traditional fiber reinforcements in composite materials. Natural fiber/polymer composites (NFCs) are regarded as potential candidates for engineering applications due to their environmental friendliness and low-impact sourcing. Thus, appropriate approaches need to be implemented to enhance the fire safety of NFCs. This review summarizes and discusses the latest understanding of flammability and thermal properties of natural fibers, with a special focus on their interaction with polymer matrix in fire behavior. Additionally, the latest developments in flame-retardant approaches for NFCs are reviewed, covering both flame retardancy and fire structural integrity. Finally, future prospects and perspectives on fire safety of NFCs are proposed, providing insights into further advancements of NFCs.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Cheng Wang, Siqi Huo, Guofeng Ye, Bingtao Wang, Zhenghong Guo, Qi Zhang, Pingan Song, Hao Wang, Zhitian Liu
Summary: The demand for multifunctional, transparent epoxy resin with superior dielectric, mechanical, and fire-safety performances is increasing in modern industries. Researchers have developed an epoxidized, phosphaphenanthrene-containing poly(styrene butadiene styrene) (ESD) for advanced fire-safe epoxy resin, which maintains high transparency and improves UV-blocking property. The addition of 10 wt% ESD results in improved mechanical properties, decreased dielectric constant and loss, and outperformance compared to other fire-safe epoxy resins. This research provides an effective method for developing multifunctional flame-retardant epoxy resin.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Bo Pang, Heping Zheng, Zuquan Jin, Dongshuai Hou, Yunsheng Zhang, Xiaoyun Song, Yanan Sun, Zhiyong Liu, Wei She, Lin Yang, Mengyuan Li
Summary: This study develops an internal superhydrophobic material (ISM) using waste denitrification fly ash, which maintains stable hydrophobicity under harsh conditions of use and does not rely on expensive fluor-based surface modifications. The synthesized ISM has excellent matrix strength, strong waterproof properties, and retains superhydrophobicity even at damaged or friction interfaces.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Meirbek Mussatayev, Qiuji Yi, Mark Fitzgerald, Vincent K. Maes, Paul Wilcox, Robert Hughes
Summary: Real-time monitoring of carbon fibre composites during Automated Fibre Placement (AFP) manufacturing remains a challenge for non-destructive evaluation (NDE) techniques. This study designed a directional eddy-current (EC) probe to evaluate the detectability of out-of-plane wrinkles. Experimental evaluations and finite element modeling were conducted to better understand the relationship between eddy-current density and defect detection. The findings suggest that the probe configuration with an asymmetric driver coil and differential pickup coils shows the best capability for wrinkle detection.
COMPOSITES PART B-ENGINEERING
(2024)
