Article
Engineering, Manufacturing
Jiabing Cai, Yunqing He, Youquan Zhou, Hongbo Yu, Binghong Luo, Mingxian Liu
Summary: In this study, a freezing-tolerant hydrogel with high stretchability, strength, and ionic conductivity was successfully prepared. The hydrogel-based organic sensor exhibited excellent performance in strain monitoring. Therefore, this research holds promising potential for applications in wearable devices.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Materials Science, Composites
Xianyuan Liu, Zilong Wang, Jinsong Sun, Zehua Zhao, Shuyi Zhan, Ying Guo, Heng Zhou, Wenbin Liu, Jun Wang, Tong Zhao
Summary: The study successfully synthesized Al2O3@graphite core-shell particles with excellent thermal conductivity and electrical insulation properties, and fabricated thermally stable phthalonitrile composites, which could potentially be used for high-temperature thermal management applications.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Alexander Collins, Mehdi Tajvidi
Summary: The viability of contact dewatering of cellulose nanofibrils and lignin-containing cellulose nanofibrils was tested, and nanoscale morphology of dried fibers was achieved on wood particles. The mechanical testing of the composites incorporating these fibers showed similar or improved properties compared to spray-dried cellulose nanofibrils. Theoretical energy required for drying was considerably reduced through contact dewatering.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Composites
Jatupol Surakarnkha, Leong Zhaoyuan, Peng Gong, William Holmes, Pratik Desai, Joel Foreman, Nicola Morley
Summary: Carbon fibre reinforced polymer composites have superior properties and are increasingly used in industries like aerospace. Structural health monitoring is necessary due to their complex failure mechanisms. Magnetostrictive materials have been effective in damage detection but need improvement in spatial sensitivity. It is important to demonstrate ease of fabrication, damage detectability, and maintain a good weight-to-cost trade-off.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Multidisciplinary
Matthew J. Shafaq, Matthew J. Donough, Ashleigh L. Farnsworth, Andrew W. Phillips, Nigel A. St John, B. Gangadhara Prusty
Summary: Innovations in recycling, automated and out-of-autoclave processes have renewed significant interests in carbon fibre-polyether ether ketone (CF/PEEK) thermoplastic composites. The cooling rates during processing affect the crystallinity and fracture toughness of semi-crystalline thermoplastics. This study examines the influence of automated fibre placement (AFP) deposition rates on the crystallinity and fracture toughness of CF/PEEK composites and highlights the importance of good consolidation in improving fracture toughness performance.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Engineering, Manufacturing
Haimo Zhang, Min Zuo, Xinyue Zhang, Xuanyu Shi, Li Yang, Shihao Sun, Jun Zhong, Yihu Song, Qiang Zheng
Summary: The research investigated the location of isolated SiO2 nanoparticles and their agglomerates in a phase-separated PMMA/SAN blend. By introducing specific surface properties, the abnormal thermodynamic distribution phenomenon can be explained, providing insights for preparing nanocomposites with desired microstructure.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Manufacturing
Xiaoyuan Pei, Mingyue Zhao, Ruixin Li, Hao Lu, Rongrong Yu, Zhiwei Xu, Diansen Li, Youhong Tang, Wenjin Xing
Summary: The study prepared CNTs/CS composites with porous network structures using 3D printing technology, showing excellent EMI shielding effectiveness and significant electromagnetic wave absorption. The influence of pore size and conductivity of the composites on EMI shielding performance was analyzed, with conductivity having a greater impact on EMI shielding effectiveness.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Manufacturing
Francesco Casamento, Elisa Padovano, Stefano Pappalardo, Alberto Frache, Claudio Badini
Summary: Fused Filament Fabrication (FFF) is widely used for polymeric materials, but limited materials can be processed. Polypropylene and its composites, being versatile, have not been extensively studied in FFF due to adhesion and warping issues. In this study, composites of polypropylene with carbonaceous fillers (carbon nanotubes and carbon fibers) were developed using FFF. Processes for compounding, filament extrusion, and FFF were optimized, and the effect of fillers on the thermo-physical properties of the materials was investigated. The addition of carbon fibers significantly improved mechanical properties, while carbon nanotubes showed a moderate increase.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Materials Science, Composites
Yitong Ding, Qian Zhou, Xingwei Li, Ying Xiong, Shaoyun Guo
Summary: In this study, a melt blending method was used to prepare light-scattering materials with improved performance. The scattering range and uniformity were enhanced while the percolation threshold of scattering angle was reduced.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Polymer Science
Yevgen Mamunya, Oleksii Maruzhenko, Roman Kolisnyk, Maksym Iurzhenko, Andrii Pylypenko, Olha Masiuchok, Marcin Godzierz, Igor Krivtsun, Barbara Trzebicka, Sebastien Pruvost
Summary: Electrothermal processes were investigated in pyroresistive composites of high-density polyethylene with carbon black and carbon fibers. The kinetic heating curves showed an exponential dependence with a heating rate constant for each composite. Equilibrium temperature was reached after a short heating time, and decreased with the presence of positive temperature coefficient of resistance (PTC) effect. The composites exhibited self-regulating capability and the equilibrium temperature depended on the applied voltage and electric power with different relationships. An application of using HDPE-CB composite as a heating element for resistance welding was demonstrated.
Article
Materials Science, Composites
Thiago Assis Dutra, Rafael Thiago Luiz Ferreira, Hugo Borelli Resende, Brina Jane Blinzler, Leif E. Asp
Summary: This study presents a computational mechanism based failure analysis for 3D-printed continuous carbon fiber reinforced thermoplastic composites, using different failure criteria and showing more realistic failure envelopes. The micromechanical modeling successfully predicts material failure and brings elements for discussion that cannot be captured by analytical models.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Composites
Hui Li, Yuan Liang, Yalong Liu, Siqi Liu, Pengcheng Li, Chaobin He
Summary: This study optimized the microstructure and improved the thermoelectric properties of CNTs/PANI composites by modulating the doping level of PANI, leading to enhanced Seebeck coefficient and power factor. The results demonstrate an effective strategy for improving the thermoelectric performance of CNTs/PANI composites through precise tuning of the doping level.
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
Engineering, Manufacturing
Roberto Scaffaro, Maria Clara Citarrella, Emmanuel Fortunato Gulino
Summary: An innovative green composite was produced by adding NPK fertilizer flour to a biodegradable polymer, which can regulate the release rate of fertilizers and solve the ecological problems caused by excessive fertilization.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Engineering, Manufacturing
Xuezhong Zhang, Dong Xiang, Yuanpeng Wu, Eileen Harkin-Jones, Jiabin Shen, Yong Ye, Wei Tan, Junjie Wang, Ping Wang, Chunxia Zhao, Yuntao Li
Summary: By introducing reduced graphene oxide (rGO) decorated with immobilized carbon nanotubes (CNTs) into a thermoplastic polyurethane (TPU) matrix, a conductive nanocomposite was successfully fabricated to produce flexible strain sensors with high sensitivity and stability. The biaxial stretching process plays a crucial role in promoting the dispersion and alignment of the nanofillers, while the synergy between CNTs and rGO nanoparticles affects the resistivity and monitoring range of the sensors. The ability of the sensor to recognize body movements and physiological activities was demonstrated.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Biophysics
H. Kemppi, M. A. Finnila, G. S. Lorite, M. Nelo, J. Juuti, M. Kokki, H. Kokki, J. Rasanen, A. Mobasheri, S. Saarakkala
Summary: This study aimed to develop a 3D porous composite scaffold by incorporating barium titanate nanoparticles using the breath figure method. The composite scaffolds had optimal pore size for cell migration and showed good biocompatibility for future tissue engineering applications.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Physics, Applied
Mikko Nelo, Timo Vahera, Tuomo Siponkoski, Jari Juuti, Heli Jantunen
Summary: The method proposed in this work utilizes hollow glass microspheres as a filler to introduce controlled porosity and reduce the relative permittivity of ceramic composites, allowing for ultra-low temperature co-firing. The samples produced with this method exhibit uniform structure with a lamination pressure of only 1.25MPa. This approach shows promising potential to significantly reduce processing temperatures and achieve extremely low permittivity required for future high-frequency applications.
APPLIED PHYSICS LETTERS
(2021)
Article
Physics, Applied
Tuomo K. Siponkoski, Heli M. Jantunen, Jari A. Juuti
Summary: The electromechanical properties of a lead zirconate titanate-poly(vinylidenefluoride-trifluoroethylene) ceramic-polymer composite on thin brass and steel substrates were investigated. The results showed improved piezoelectric properties with the stiffer steel substrate samples. The developed material and cantilever structures are feasible for both sensor and energy harvesting applications.
APPLIED PHYSICS LETTERS
(2022)
Article
Engineering, Multidisciplinary
Tuomo Siponkoski, Mikko Nelo, Niklas Ilonen, Jari Juuti, Heli Jantunen
Summary: This study presents a new approach to fabricate piezoelectric all-ceramic composites using an organotitanate based precursor gel instead of lithium molybdate at ultra low temperatures. The developed composite shows exceptional dielectric and piezoelectric properties, with improved charge and voltage coefficients compared to other composites. The sensor properties and application feasibility of the composite are successfully demonstrated, achieving sensitivities comparable to commercial devices.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Materials Science, Ceramics
Yu-Chuan Wu, Hsiao-Ting Tseng, Chi-Shiung Hsi, Jari Juuti, Hsing- Hsiang
Summary: The study explores the preparation of composite ceramics in the 0.7Mg(4)Nb(2)O(9)-(0.3-x)ZnAl2O4-xTiO2 ternary system using a solid-state reaction method. The addition of Ti4+ promotes the decomposition of Mg4Nb2O9, while ZnAl2O4-TiO2 co-doping enhances the densification of Mg4Nb2O9 ceramic. The sample with x = 0.15-0.2 shows improved dielectric properties, making it a promising candidate for microwave electronic device applications.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Biotechnology & Applied Microbiology
C. Fiorentini, A. Bassani, G. Duserm Garrido, D. Merino, G. Perotto, A. Athanassiou, J. Perantie, N. Halonen, G. Spigno
Summary: This study investigated the effect of autohydrolysis temperature on the cellulose residue isolated from wheat straw. The results showed that autohydrolysis at 195 degrees C produced the highest cellulose residue yield with similar purity and structure to the other residues. The cellulose residue was then tested as a reinforcing agent in PBAT films, and it was found that the addition of 5% cellulose increased the Young's modulus of the films.
BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Jincheng Yu, Mikko Nelo, Xiaodong Liu, Shouqi Shao, Bing Wang, Sarah J. Haigh, Heli Jantunen, Robert Freer
Summary: Cold sintering combined with annealing processes was used to synthesize high-quality Ca2.7Bi0.3Co3.92O9+delta ceramics, and the effects on thermoelectric performance were studied. By optimizing heat-treatment, the formation of secondary phases, texture development and porosity were controlled, resulting in enhanced electrical conductivity and reduced thermal conductivity.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Jarkko Tolvanen, Mikko Nelo, Heidi Alasmaki, Tuomo Siponkoski, Piia Makela, Timo Vahera, Jari Hannu, Jari Juuti, Heli Jantunen
Summary: This paper reports a multiphase conductor that can autonomously self-heal in a short period of time, with excellent electrical and mechanical properties. The conductor is insensitive to flaws and can recover its original performance under stretching.
Article
Green & Sustainable Science & Technology
Milica Vidak Vasic, Heli Jantunen, Nevenka Mijatovic, Mikko Nelo, Pedro Munoz Velasco
Summary: Finding a solution to the problem of coal ash buildup is crucial. The use of coal ash in fired clay bricks has been researched, but there is limited information on its industrial utilization and disagreements among researchers on the improvement of product quality. A database of 20 years of research was created, including key factors such as chemical composition, firing temperature, soaking time, porosity, water absorption, and compressive strength. Random forest regression and artificial neural networks were used to predict the quality parameters of the bricks. The study concluded that using fly ash resulted in the highest compressive strength and class F ash was suitable as a replacement for brick clay.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Materials Science, Multidisciplinary
Mikko Kokkonen, Mikko Nelo, Henrikki Liimatainen, Jonne Ukkola, Nuutti Tervo, Sami Myllymaki, Jari Juuti, Heli Jantunen
Summary: Future wireless communication systems like 6G require low loss materials for efficiency and low weight to improve communication and reduce signal power in IoT applications. This study presents a sustainable method for manufacturing RF lenses using low temperature and low loss materials, demonstrating their performance through experiments.
MATERIALS ADVANCES
(2022)
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)