Article
Construction & Building Technology
Maryam Monazami, Ashutosh Sharma, Rishi Gupta
Summary: The installation of concrete pavements at bus stops can improve resistance to deterioration, with innovative materials like CFRC showing superior performance compared to normal concrete. Real-time monitoring and various tests showed that CFRC bus pads have fewer cracks and better durability, leading to increased service life and lower electrical resistivity compared to traditional concrete bus pads.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Construction & Building Technology
Shuvo Dip Datta, Md. Habibur Rahman Sobuz, Abu Sayed Mohammad Akid, Shoaib Islam
Summary: This paper presents an experimental investigation of the properties of recycled aggregate concrete (RAC) prepared with varying sizes and replacement levels of coarse aggregate. The results show that RAC achieves lower performance values with the increment of recycled aggregate replacement level. Additionally, concrete with smaller aggregate size exhibits better performance. Empirical relationships between destructive and non-destructive testing techniques are also established to efficiently predict the properties of RAC.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Matthew Newton, Tonoy Chowdhury, Ian Gravagne, David Jack
Summary: This study demonstrates the detection and quantification of in-plane wrinkles on a 5-ply unidirectional carbon fiber-reinforced plastic (CFRP) laminate using a customized eddy current testing (ECT) system. The effectiveness of the ECT system is compared with conventional X-ray computed tomography (CT) and ultrasonic testing (UT) methods. The ECT system successfully detects changes in the local fiber orientation, wave tangent angle, and wrinkle width throughout the part.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Composites
Fan Yang, Dehui Wu, Hao Feng
Summary: A novel non-destructive testing (NDT) method for detecting defects in carbon fiber-reinforced polymers (CFRPs) at low frequencies is proposed. This method uses eddy current loss to characterize the thermal power of the eddy current in CFRP and a new probe to detect the eddy current loss and inspect CFRP. Experimental results demonstrate that the developed method can provide appropriate detection results and successfully detect fiber direction up to a frequency of 750 kHz.
POLYMER COMPOSITES
(2023)
Article
Polymer Science
Muchao Qu, Jinfeng Cai, Xiaoqing Li, Jin Wu, Hongji Chen, Zhenxing Zheng, Fritjof Nilsson, Shuiyan Liu, Qun Gao
Summary: Ternary polymer composites sheets with glass fiber reinforced epoxy and different fractions of carbon nanotubes were prepared. Morphology analysis was conducted using scanning electron microscopy. The thermal behavior of the composites was investigated using thermogravimetric analysis, DSC, and DMA, showing an application temperature up to 71 degrees C. Mechanical tests revealed that the addition of 0.1-0.2 wt% CNT decreased the dissipated energy by 50% and increased Young's modulus by more than 100%. The electrical resistance change was recorded during stretching and bending tests, and the relationship between electrical signal and deformation was analyzed. The optimized equation reduced the fitting parameters from five to three. The composites show potential as sensing materials for wind-turbine blades and glass-fiber reinforced epoxy constructions, particularly for nondestructive testing.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Review
Engineering, Industrial
Isaac Segovia Ramirez, Fausto Pedro Garcia Marquez, Mayorkinos Papaelias
Summary: Additive manufacturing, a major advancement in the fourth industrial revolution, involves high-precision material deposition using various techniques to build final parts. Efficient inspection methods, such as Nondestructive Testing, are crucial for ensuring quality control and detecting faults in additive manufacturing. The selection and correct use of Nondestructive Testing techniques depend on factors such as application, manufacturing process, material type, and discontinuities. This article provides a comprehensive review and analysis of the state of the art of Nondestructive Testing in additive manufacturing, highlighting relevant works and challenges faced by each technique. It also explores the use of Machine Learning techniques for defect quantification and analysis in Nondestructive Testing.
JOURNAL OF MANUFACTURING SYSTEMS
(2023)
Article
Engineering, Multidisciplinary
Wenxiong Chen, Dehui Wu, Xiaohong Wang, Teng Wang
Summary: Eddy current testing (ECT) is an effective method for non-destructive testing of aviation materials. However, the traditional ECT technology faces difficulties in aircraft inspection due to the need for testing in a large frequency range caused by the use of multiple materials. This paper proposes a self-frequency-conversion ECT method and system, which can detect defects in metal materials and CFRP within a conventional frequency range.
Article
Construction & Building Technology
Sukru Ozkan, Omer Coban
Summary: The density of hybrid fiber-reinforced composites increased with the increase of basalt fiber ratio, while the water absorption capacity and capillary water absorption coefficient values decreased. The maximum ultrasonic pulse velocity and Schmidt rebound hammer values were obtained from the P0B100 samples.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
H. N. Yoon, Daeik Jang, Taegeon Kil, H. K. Lee
Summary: This study examined the changes in electrical properties of cement pastes incorporating CNT and CF exposed to various deterioration factors. The electrical resistivity of the samples increased with exposure time, and a rapid change in resistivity due to the polarization effect was observed. However, the incorporation of micro-sized CF mitigated the increase in resistivity caused by deterioration, improving electrical stability in different environments. Exposure to deterioration conditions caused changes in physicochemical structures and resulted in changes in electrical resistivity.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Ting Luo, Huikai Yuan, Qiang Wang
Summary: This study investigates the differences of carbon fiber (CF) on the properties of Portland cement and alkali-activated fly ash/slag (AAFS) pastes. The workability, rheological performance, and electrical properties of CF-based AAFS were analyzed and compared with CF-based cement paste. The electrical microstructure of CF composites was analyzed by electrical impedance spectroscopy (EIS). The results show that AAFS-CF composite has better CF dispersion and electrical conductivity compared to cement due to the higher plastic viscosity and the softening effect of alkaline activator.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Alper Ozmen, Erkut Sayin
Summary: In order to prevent earthquake damage to historical masonry structures, accurate information on their material properties is important for reliable computational modelling and strengthening intervention programs. This study compared destructive and non-destructive techniques used to evaluate the original and restoration stones of Tas,horan Church in Malatya, Turkey, presenting the test results.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Metin Pekgor, Reza Arablouei, Mostafa Nikzad, Syed H. Masood
Summary: This paper presents a novel non-destructive testing (NDT) approach based on radio frequency identification (RFID) tag array for detecting and identifying common defects in fiber-reinforced polymers (FRPs) that may occur during manufacturing. The proposed approach shows high accuracy in identifying voids and misalignments in carbon FRPs (CFRP) and glass-FRPs (GFRP), and it is cost-effective and scalable, serving as an alternative or additional technique to existing NDT methods.
IEEE SENSORS JOURNAL
(2023)
Article
Mechanics
Wu Dehui, Yang Fan, Wang Teng, Chen Wenxiong
Summary: The novel CFRP non-destructive testing method proposed in this paper utilizes a working frequency up to 750 kHz to detect cracks and fiber distribution, with a good signal-to-noise ratio.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Dehui Wu, Wenxiong Chen, Jiaxin Yang, Fan Yang
Summary: In this paper, a self-resonance ECT method for noncontact detection of CFRP at a low-frequency with a relatively high signal-to-noise ratio was proposed. The system developed in this study showed similar detection effect at 500 kHz compared to the traditional ECT system at 10 MHz, indicating that 500 kHz is sufficient for providing good detection results for CFRP samples. This research contributes valuable guidance for the application of low-frequency ECT method in CFRP.
COMPOSITE STRUCTURES
(2021)
Article
Construction & Building Technology
Ji-Hua Zhu, Haowei Shen, Liangliang Wei
Summary: This study investigates the electrical properties and fracture behavior of cementitious composites HyFRCC, which consist of polyethylene (PE) and carbon fiber (CF). An orthogonal experimental design was used to evaluate the effect of water-to-binder ratio and volume fraction of fibers on the properties of HyFRCC. The results show that the water-to-binder ratio significantly affects the electrical resistivity, while CF affects the initial fracture toughness and PE determines the unstable fracture toughness. By selecting the appropriate fiber system and water-to-binder ratio, HyFRCC can achieve compatible electrical properties and fracture behavior.
STRUCTURAL CONCRETE
(2023)
Article
Materials Science, Multidisciplinary
Tao Zheng, Xiaobing Hu, Feng He, Qingfeng Wu, Bin Han, Da Chen, Junjie Li, Zhijun Wang, Jincheng Wang, Ji-jung Kai, Zhenhai Xia, C. T. Liu
Summary: The concept of multi-principal-component high-entropy alloys has led to the creation of numerous new alloys, including nanoscale precipitated HEAs with exceptional mechanical properties for structural applications. Finding the optimal alloy remains a challenge, with current approaches relying on trial-and-error methods and phase diagram calculations. This study proposes a novel method to accelerate the development of ultra-strong nanoprecipitated HEAs by utilizing machine learning and kinetic control for designing nanoscale precipitates.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Ming Li, Weijun Li, Qingwen Guan, Xiaoli Dai, Jing Lv, Zhenhai Xia, Wee-Jun Ong, Eduardo Saiz, Xu Hou
Summary: The pressure-responsive polyurethane (PU) adhesive inspired by the octopus sucker combines reversible adhesion to solid materials and biological tissues, robust stability, high transparency (>90%), and high static adhesion.
Article
Chemistry, Multidisciplinary
Yu-Chia Yang, Zhenhai Xia, Sundeep Mukherjee
Summary: This paper explores the relationship between atomic structure and mechanical properties of metallic glasses by using molecular dynamics simulation. The study found that changes in mechanical properties can be linked to short- and medium-range ordering in the atomic structure. Structural statistics, such as Voronoi analysis, were used to determine the mechanical properties of the metallic glass.
Article
Physics, Applied
Zhigang Li, Xiangke Cui, Xiaowei Wang, Zongpeng Wang, Minghu Fang, Shangshen Feng, Yanping Liu, Jigen Chen, Tianle Wang, Hengji Liu, Zhenhai Xia, Bingqing Wei
Summary: This research reports the discovery of super-semiconductors, which have resistivity 3-10 orders of magnitude lower than conventional semiconductors at room temperature. The transition from a metal state to a super-semiconducting state is observed, accompanied by an increase in hole carrier density and the mobility increase in electrons. This behavior is attributed to the generation of hot electrons and holes induced by metal plasmon resonance in nanostructured bimetallic arrays.
APPLIED PHYSICS REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Bin-Wei Zhang, Tao Zheng, Yun-Xiao Wang, Yi Du, Sheng-Qi Chu, Zhenhai Xia, Rose Amal, Shi-Xue Dou, Liming Dai
Summary: The authors report a method to synthesize hydrogen peroxide using a catalyst material consisting of single cobalt atoms on oxygen functionalized graphene oxide. This catalyst shows high selectivity and a low onset potential for hydrogen peroxide production. The study demonstrates the potential of single cobalt atoms as efficient electrocatalysts for the synthesis of hydrogen peroxide.
COMMUNICATIONS CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Jiamin Wu, Yunyi Liang, Changlei Xia, Xinxin Ma, Benhua Fei, Yingji Wu, Shengbo Ge, Jianxiong Lu, Jianzhang Li, Zhenhai Xia
Summary: A novel processing technology has been developed to fabricate laminated transparent woods, which effectively improves their mechanical properties and wood template contents. The lamination structures and layers have significant influences on the optical and mechanical properties of transparent woods, and cross-lamination reduces the direction-dependence of mechanical strength.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Multidisciplinary
Chang Guo, Fuli Zhang, Xiao Han, Lipeng Zhang, Qian Hou, Lele Gong, Jincheng Wang, Zhenhai Xia, Jianhua Hao, Keyu Xie
Summary: By considering the decomposition of Li2CO3, an intrinsic descriptor consisting of the d(x2-y2) orbital states and electronegativity is discovered to predict high-performance cathode materials. Graphene-supported noble metal (NM@G) cathodes are fabricated using a fast laser scribing technique, and Pd@G exhibits ultralow overpotential and superior cycling performance. The relationship between electronic properties of noble metal cathodes and the performance of Li-CO2 batteries provides a new avenue for designing efficient cathode materials.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Applied
Qingfeng Zhai, Zhenhai Xia, Liming Dai
Summary: This review article discusses the recent advances in carbon-based metal-free electrocatalysts (C-MFECs) and how various strategies, such as heteroatom doping, defect doping, and molecular modification, can induce catalytic active sites to create efficient and multifunctional electrocatalysts. Theoretical research has shown that the catalytic activity in C-MFECs originates from the charge/spin redistributions induced by the change in electronic structures of doped carbon materials. The progress in the unified mechanistic understanding and the challenges and future perspectives in this field are also presented.
Article
Chemistry, Multidisciplinary
Yong Gao, Zhenglong Li, Pan Wang, Wengang Cui, Xiaowei Wang, Yaxiong Yang, Fan Gao, Mingchang Zhang, Jiantuo Gan, Chenchen Li, Yanxia Liu, Xinqiang Wang, Fulai Qi, Jing Zhang, Xiao Han, Wubin Du, Hongge Pan, Zhenhai Xia
Summary: A series of heteroatom-doped graphene were investigated as efficient pseudocapacitive anodes for calcium-ion batteries. Density functional theory calculations and experimental verifications were conducted to establish the design principles and propose a new descriptor φ to correlate the properties of dopants with the storage capabilities of the carbon-based anode. The design principles and descriptor demonstrated predictive ability in screening the best dual-doped graphene anode with significantly higher Ca2+ storage capability than sole-doped counterparts.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Tao Zheng, Jincheng Wang, Zhenhai Xia, Guofeng Wang, Zhiyao Duan
Summary: Iron and nitrogen co-doped carbon (Fe-N-C) catalysts have shown great potential in promoting the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells. This study used density functional theory to investigate the interplay of oxidation state, spin state, and applied potentials on the catalytic activity of an FeN4C10 moiety. Two stable spin states of Fe(ii)N4C10 at ORR-relevant potentials were identified, showing distinct abilities in binding ORR intermediates and ORR activities. This research provides valuable insights into the spin-correlated catalytic performances of Fe-N-C catalysts.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Lele Gong, Xiaowei Wang, Rahman Daiyan, Xiaofeng Zhu, Joshua Leverett, Zhiyao Duan, Lipeng Zhang, Rose Amal, Liming Dai, Zhenhai Xia
Summary: In this study, a computational approach based on density functional theory and electrical double-layer interface models is developed to accurately predict potential-dependent reaction pathways, catalytic activity, and product selectivity of electrochemical CO2 reduction. The calculated onset potentials and maximum faradaic efficiency of CO2 reduction agree well with experimental results for single-atom catalysts. This research provides a fundamental understanding of complex potential-dependent catalytic behavior and offers new approaches for catalyst screening in CO2 reduction and other complex reaction systems.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Tao Zheng, Xiao Han, Jincheng Wang, Zhenhai Xia
Summary: Efficient and stable single-atom catalysts (SACs) for oxygen reduction and oxygen evolution reactions were achieved through doping strategy, with the establishment of an intrinsic descriptor for screening the best SACs.
Article
Chemistry, Physical
Xiao Han, Qiao Chen, Qingxi Chen, Qingfeng Wu, Ziyuan Xu, Tao Zheng, Weizhao Li, Dingcong Cui, Zhiyao Duan, Jing Zhang, Junjie Li, Hejun Li, Zhijun Wang, Jincheng Wang, Zhenhai Xia
Summary: Highly porous high entropy alloy electrodes were successfully fabricated through selective etching of eutectic microstructures, exhibiting excellent performance in the hydrogen and oxygen evolution reactions with enhanced interaction between the electrode surface and adsorbed water molecules. First-principles calculations confirmed the improvement in intrinsic catalytic activity after dealloying. This study provides a new approach for designing low-cost self-supporting electrodes for sustainable energy applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Jun Ma, Yang Zhong, Shanshan Zhang, Yijun Huang, Lipeng Zhang, Yaping Li, Xiaoming Sun, Zhenhai Xia
Summary: A series of metal-free graphdiyne doped with heteroatoms have been designed to promote the oxygen reduction reaction and oxygen evolution reaction. By systematically investigating reaction pathways and free energy with density functional theory, it was found that dopants can optimize the adsorption of intermediates and lower the overpotential of reactions, providing guidance for the development of new catalysts in clean energy technologies.
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
(2021)
Article
Chemistry, Physical
Lele Gong, Xiaowei Wang, Tao Zheng, Jerry Liu, Jie Wang, Yu-Chia Yang, Jing Zhang, Xiao Han, Lipeng Zhang, Zhenhai Xia
Summary: This study establishes design principles for screening highly active electrocatalysts for CO2 reduction, with an intrinsic descriptor found to correlate the molecular structures of active centers with catalyst activity and selectivity. The coordinately unsaturated Ni-doped covalent triazine framework (Ni-CTF) is identified as one of the best electrocatalysts, showing lower overpotential for CO2 reduction and inhibiting the formation of side products. Compared to other catalysts, TM-CTFs exhibit higher catalytic activity and stronger inhibition of side products.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
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)
