Article
Engineering, Multidisciplinary
William A. Pisani, Matthew S. Radue, Sagar Umesh Patil, Gregory M. Odegard
Summary: Flattened carbon nanotubes (flCNTs) show potential as a form of composite material reinforcement with self-assembly and packing efficiency, and computational methods are used to drive their design through efficient polymer selection. The choice of polymer matrix is crucial for the properties at the reinforcement/polymer interface, impacting the overall performance of the composite materials. The predictions suggest that the fluorinated cyanate ester demonstrates the best overall compatibility with flCNTs, showing higher resistance to shearing and peak tension strength compared to other polymer systems.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Engineering, Mechanical
Hao Xu, Chang Gao, Zhaoxu Meng, Ao Wang, Sinan Keten, Zhanjun Wu
Summary: In this study, the molecular-scale fracture mechanisms of modified epoxy resins were revealed using molecular dynamics simulations. The chain length distribution was found to be a crucial determinant of the mechanical and fracture properties, and properties such as fracture energy could be enhanced by regulating the chain length. This study provides valuable insights into the design and fabrication of high-performance aerospace composites.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Materials Science, Composites
Zixuan Chen, Tianyu Yu, Yun-Hae Kim, Zetian Yang, Yan Li, Tao Yu
Summary: This study aims to investigate the mechanical properties of basalt fiber reinforced polymers (BFRPs) with the incorporation of different structured nanoclays, and to improve their interfacial bonding through experimental methods. The results show that a flattened nanoclay structure is more effective for enhancing the modulus, and the inclusion of different structured nanoclays also improves the interlaminar strength and toughness of BFRPs.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Prashik S. Gaikwad, Margaret Kowalik, Benjamin D. Jensen, Adri van Duin, Gregory M. Odegard
Summary: This study uses molecular dynamics modeling to predict the load transfer characteristics of the interface region between flattened carbon nanotubes (flCNTs) and amorphous carbon (AC). Increasing the mass density of AC at the interface improves load transfer capability, while dual cross-linking at the flCNT-AC interface and between flCNT sheets leads to substantial improvements in interfacial shear strength, transverse tension strength, and transverse tension toughness.
ACS APPLIED NANO MATERIALS
(2022)
Article
Construction & Building Technology
Xing Quan Wang, Denvid Lau
Summary: The study shows that chloride environment significantly deteriorates the interfacial adhesion, structure, and mechanical properties of GFRP composites, hindering the formation of hydrogen bonds in the composite material.
ADVANCES IN STRUCTURAL ENGINEERING
(2021)
Review
Engineering, Manufacturing
Tejas Pramod Naik, Inderdeep Singh, Apurbba Kumar Sharma
Summary: The search for novel energy-efficient, eco-friendly, and time-saving manufacturing techniques is gaining momentum recently. Polymer composites have been increasingly used in various industrial applications, but their efficient processing remains challenging. This article provides an overview of the basics of microwave heating and the physics behind the microwave processing of polymer composites, reviews the state-of-the-art on microwave processing of thermoset and thermoplastic-based composites, and highlights the challenges and constraints in adopting microwave technology for curing composites at an industrial scale. The article also indicates the future scope of work involving microwave scanning route for 3D printing of polymer matrix composite parts.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Engineering, Multidisciplinary
Deng Pan, Kaifa Zhu, Yunzhe Zhang, Lixiao Sun, Xiuhong Hao
Summary: In this study, the researchers investigated the dynamic molecular structure changes in PTFE and PTFE/graphene composites under compression. They calculated the critical formation and fracture lengths of the C-C bond in these materials and constructed molecular models through simulations. The results showed that compression can induce fracture and formation of chemical bonds, leading to increased fracture damage and decreased compression resistance. However, the formation of bonds reduced the compressive resistance and increased the tensile strength to some extent.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Yanlin Liu, Binbo Wang, Songqi Ma, Tao Yu, Xiwei Xu, Qiong Li, Sheng Wang, Yingying Han, Zhen Yu, Jin Zhu
Summary: The study introduces fully bio-based catalyst-free epoxy vitrimers for Carbon Fiber Reinforced Composites (CFRCs), showing exceptional malleability and reprocessability through compression molding. The material also demonstrates outstanding degradability, allowing for multiple recoveries of carbon fibers without damage.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Engineering, Multidisciplinary
Lin Tang, Junliang Zhang, Chunliang Wu, Yusheng Tang, Hao Ma, Jie Kong, Junwei Gu
Summary: The UV-treated PBO fibers combined with AEAF-co-BADCy resin exhibit excellent interfacial compatibility and comprehensive performance, with high strength, low complex permittivity, and improved wave transparency.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Engineering, Multidisciplinary
Chi Zhang, Mingyang Chen, Benoit Coasne, Sinan Keten, Dominique Derome, Jan Carmeliet
Summary: Intermolecular interactions at the fiber-matrix interface strongly influence the hygromechanical behavior and overall mechanical performance of hydrophilic cellulosic nanocomposites. The investigation of a model interface inspired by natural wood reveals an anisotropic and non-monotonic swelling behavior of the composite with increasing moisture content. The findings on the interfacial shear strength and the correlation between hydrogen bonds and interfacial shear stress provide insights into the mechanics of fiber-reinforced composites.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Engineering, Manufacturing
Eirini Tsiangou, Julian Kupski, Sofia Teixeira de Freitas, Rinze Benedictus, Irene Fernandez Villegas
Summary: This study assessed the sensitivity of ultrasonic welding process for joining different composites, revealing that dissimilar composite welded joints are more sensitive to heating time. However, a relatively wide processing interval could still be obtained when the coupling layer had sufficient thickness.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Manufacturing
Senmao Yu, Zhenghai Tang, Shifeng Fang, Siwu Wu, Baochun Guo
Summary: The functionalization of carbon black through redox polymerization of rhodanine on its surface significantly reduces the energy loss of the resultant composites, improving the reinforcement effect in rubber.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Manufacturing
Zengquan Liu, Xiaochun Yin, He Zhang, Mengmeng Wang, Yanhong Feng
Summary: With the arrival of the 5G era, integrated and miniaturized intelligent devices have higher demands for thermal management materials. This study utilized an eccentric rotor solid extruder to fabricate oriented BN/UHMWPE composites with high thermal conductivity, by establishing a segregated 3D thermal conductive network below the melting temperature of the UHMWPE matrix. The prepared composite showed high orientation, thermal conductivity, and stability, making it suitable for electronic packaging applications.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Engineering, Multidisciplinary
Peiwen Yang, Yuhang Sun, Gang Li, Xiaoping Yang, Xiaobiao Zuo
Summary: The study investigates the effect of the rigid/flexible proportion on the interfacial properties of M40X composites by constructing a rigid-flexible interphase using a polyamide acid-polyether amine block copolymer. Experimental and molecular dynamic simulation methods are used to explore the correlation. The results show that an increase in the proportion of flexible segments leads to improved chemical activity and uniform coverage on the PAE-CF surface. The interphase reinforcing mechanisms and the balance between interfacial stiffness and toughness are achieved through optimal rigid/flexible ratios.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Xiaolong Hao, Junjie Xu, Haiyang Zhou, Wei Tang, Wenjuan Li, Qingwen Wang, Rongxian Ou
Summary: The absolute content of MAPE in UH-WPCs does not correlate positively with the mechanical properties, indicating that esterification may not be the key determinant for interfacial adhesion mechanisms when using MAPE as a compatibilizer.
MATERIALS & DESIGN
(2021)
Article
Construction & Building Technology
Uthpala Rathnayake, Tharindu L. W. Karunaratne, Shousou Han, Denvid Lau, Cheuk L. Chow
Summary: This study tested and compared the performance of water wall systems and single skin glass facade systems under fire exposure conditions, and found that water wall systems have better fire resistance. However, glass pane fallout is more likely to occur in water wall systems.
INDOOR AND BUILT ENVIRONMENT
(2023)
Article
Construction & Building Technology
Qiwen Qiu, Denvid Lau
Summary: This paper proposes the integration of You Only Look Once (YOLO) into an unmanned aerial vehicle (UAV) for real-time crack detection in tiled sidewalks. Different network architectures of YOLOv2-tiny, Darknet19-based YOLOv2, ResNet50-based YOLOv2, YOLOv3, and YOLOv4-tiny are compared to improve accuracy and speed of detection. The results show that ResNet50-based YOLOv2 and YOLOv4-tiny offer excellent accuracy and speed, and remarkable ability in detecting small cracks. They also demonstrate good adaptability to environmental conditions such as shadows, rain, and motion-induced blurriness. The evaluation suggests the appropriate altitude and scanning area for the YOLO-UAV-based platform to achieve remote, reliable, and rapid crack detection.
AUTOMATION IN CONSTRUCTION
(2023)
Article
Construction & Building Technology
Huaguo Chen, Renyuan Qin, Cheuk Lun Chow, Denvid Lau
Summary: We have innovated a green recycling solution by using a silane coupling agent to recycle thermoset plastic waste as fillers in cement mortar, resulting in sustainable and eco-friendly construction materials. Experimental results show that thermoset waste can replace at least 15% of sand in cement mortar, and the optimal replacement level is 5% for achieving the highest compressive strength. Scanning electron microscope analysis reveals that cement mortars with 5% thermoset waste exhibit a highly dense microstructure, robust interfacial transition zone, and better hydrate crystal growth, which contribute to the strength enhancement.
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Materials Science, Composites
Jialin Liu, Ning Hu, Cheuk Lun Chow, Denvid Lau
Summary: The water-driven expansion of folded BNNSs on the tobermorite surface is studied by molecular dynamics simulation. The interface deterioration and flexibility of the BNNSs contribute to their expansion behavior. The presence of water molecules reduces the energy barrier and allows for the release of strain energy in BNNSs, promoting their expansion. Higher temperatures accelerate the expansion degree of BNNSs and may enhance the self-healing ability of cracks in the tobermorite composite.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Construction & Building Technology
Fenghua Nie, Wei Jian, Zechuan Yu, Cheuk Lun Chow, Denvid Lau
Summary: In this study, a new coarse-grained model is developed to investigate the formation of aggregated microstructures in asphaltene. The results show that asphaltene disks gradually adjust their positions and orientations during equilibrium process, forming columnar structures containing packed asphaltene disks. The packing fraction and microstructures are influenced by the aspect ratio, temperature, and pressure of asphaltene disks. This coarse-grained model helps understand the formation mechanism of asphaltene agglomerates and provides insights for solving aggregation problems in asphaltene systems.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Mechanics
Lik-ho Tam, Marc A. Ntjam Minkeng, Denvid Lau, Walid Mansour, Chao Wu
Summary: This study utilizes molecular simulation to investigate the impact of moisture on the interfacial creep responses of carbon fiber/epoxy matrix interface under sustained loading. The results show that water molecules disrupt the molecular interactions, degrade the bonding properties, and accelerate the interfacial sliding and debonding process, leading to a significant reduction in the interfacial resistance to shearing loading under wet conditions.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Green & Sustainable Science & Technology
Kai Cui, Dong Lu, Ting Jiang, Jixin Zhang, Zhenliang Jiang, Guodong Zhang, Jun Chang, Denvid Lau
Summary: This research investigates the effect of different aspect ratios of carbon nanotubes (CNTs) on the macroscale performance and microstructure of low-carbon sulfoaluminate cement-based composite. The experimental results show that adding CNTs with different aspect ratios can enhance the flexural strength, compressive strength, and hydration degree of the composite. The increase in content of AFt and AH(3) can synergistically enhance the mechanical properties of the matrix.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Acoustics
Chao Wu, Jia-ao Hou, Hongtao Liu, Jipeng Yang, Denvid Lau, Likho Tam
Summary: In this paper, a multiscale simulation consisting of molecular simulation and meshless simulation is used to study the moisture effect on the nonlinear vibrations of epoxy thin film. It is found that the mechanical properties of epoxy molecules initially increase with moisture content from 0.0 to 1.0 wt% and then decrease as moisture content increases to 4.0 wt%. The vibration behaviors of epoxy thin film are investigated using meshless simulations based on the molecular simulation results. The fundamental frequencies of epoxy thin films show a similar trend as the variation of mechanical properties, and the level of nonlinear frequency ratio decreases at 1.0 wt% and subsequently increases up to 4.0 wt%. This work contributes to the prediction of vibration behaviors of epoxy-based applications in wet environment.
JOURNAL OF SOUND AND VIBRATION
(2023)
Article
Materials Science, Multidisciplinary
Xing Quan Wang, Cheuk Lun Chow, Denvid Lau
Summary: Diamond nanothread (DNT) is a carbon-based nanoadditive that has attracted attention for its exceptional mechanical properties. This study used molecular dynamics simulations to investigate the effect of DNT with different topological structures on the glass transition temperature (Tg) of polymeric materials and identified the underlying mechanism of the glass-rubber transition. The results showed that the topological structures of DNT play a role in enhancing the thermomechanical properties of polymeric materials, and this is related to factors such as rigidity, the dihedral angle between DNT and aromatic ring, and mechanical interlock. The transition from glass to rubber was found to be induced by increases in intermolecular motions due to higher free volume at the DNT-polymer chain interface, which is governed by van der Waals interaction.
APPLIED MATERIALS TODAY
(2023)
Article
Construction & Building Technology
Huaguo Chen, Cheuk Lun Chow, Denvid Lau
Summary: Recycling used engine oil (UEO) into concrete is a viable solution, as UEO has similar functions to chemical additives for concrete production. However, the fire performance of UEO concrete needs to be evaluated to ensure its safe application.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Computer Science, Artificial Intelligence
Jialin Liu, Weihe Liu, Cheuk Lun Chow, Denvid Lau
Summary: RVE models are used to simulate the microstructural characteristics of BNNS-reinforced cement paste, with the interfacial properties described by MD-based CZM. FEA is then used to obtain the mechanical properties of the macroscale cement paste. The accuracy of the MD-based CZM is validated by comparing the FEA results with measurements, showing close agreement in compressive strength but discrepancies in tensile strength, attributed to load transfer at the BNNS-tobermorite interface.
Article
Construction & Building Technology
Ruidong Wu, Xing Quan Wang, Danyang Zhao, Jia-ao Hou, Chao Wu, Denvid Lau, Lik-ho Tam
Summary: This paper reviews molecular investigations of interfacial degradation between fiber and matrix in fiber-reinforced polymer composites under various environmental and loading conditions. The study involves the construction of interface models for different fibers and matrixes and simulation of environmental and loading conditions. Mechanical and adhesion properties of molecular interfaces obtained from deformation simulations are presented, and interfacial degradations and underlying mechanisms under different conditions are discussed. The paper also proposes future directions for modeling and simulation of molecular interfaces.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jialin Liu, Ning Hu, Cheuk Lun Chow, Denvid Lau
Summary: This study demonstrates through molecular dynamics simulations that penta-BNNS exhibits better ductile behavior under tensile deformation compared to hexa-BNNS. These findings contribute to the design of advanced nanomaterials for improving the performance of hydrogels.
MATERIALS & DESIGN
(2023)
Review
Materials Science, Multidisciplinary
Xing Quan Wang, Pengguang Chen, Cheuk Lun Chow, Denvid Lau
Summary: Industry 4.0 is driving the transformation of the manufacturing industry towards intelligence, and the construction industry also requires advancements in materials, devices, and systems. Researchers in construction materials have started using artificial intelligence technology to accelerate these advancements. This article evaluates the recent progress in applying machine learning to develop concrete, fiber-reinforced composites, and metals in order to improve their durability, sustainability, safety, and recyclability. It highlights how artificial intelligence addresses the challenges of material research, particularly in the context of the construction industry under the Industry 4.0 framework. With the progress in artificial intelligence, integration with Industry 4.0 is envisioned, starting with the digitization of construction materials and progressing towards advanced manufacturing, ultimately aiming for intelligent application and operation of buildings.
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)