Article
Automation & Control Systems
Weiwen Chen, Xiqin Liu, Hengchang Bu, Feiyun Wang, Jiebang Luo, Xiaohong Zhan
Summary: This research explores the laser joining between CFRTP and TC4 titanium alloy under different scanning modes to achieve high-quality joints. The results indicate that oscillating laser joining outperforms linear laser joining in terms of resin filling and temperature distribution uniformity.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Review
Materials Science, Composites
Shuangxi Hu, Fang Li
Summary: This paper presents the most recent research on laser welding CFRTP and metals, including the influence of process parameters on joint quality, joint enhancement mechanisms and methods, and numerical simulations of temperature and stress fields. The findings show that process parameters significantly influence joint strength and that choosing the right parameters can achieve maximum joint strength.
POLYMER COMPOSITES
(2023)
Article
Metallurgy & Metallurgical Engineering
Guang-jie Feng, Zhuo-ran Li, Peng He, Lei Shen, Zhi Zhou
Summary: The Cf/Al composites were joined to the TC4 alloy using the laser-induced combustion joining method. The interlayer's exothermic reaction provided the necessary energy for the joining process. By designing the chemical composition of the Ni-Al-Zr interlayer and investigating the microstructure and mechanical properties of the joint, it was found that Zr content played a key role in determining the microstructure and shear strength of the joint.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Engineering, Manufacturing
Ziwei Feng, Guolong Ma, Jianhui Su, Caiwang Tan, Xiaohui Han, Hongyun Zhao, Bo Chen, Xiaoguo Song
Summary: The study investigated the effect of laser power, traveling speed, and defocus distance on the bonding interface and joint properties of 6061 aluminium alloy and carbon fiber reinforced thermoplastic composite. The results showed that the shear strength of joints first increased and then decreased with the increase of heat input. XPS analysis confirmed that the main bonding mechanism between aluminium alloy and CFRTP was mechanical interlocking.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Engineering, Multidisciplinary
Peihao Geng, Hong Ma, Weihao Li, Kazuki Murakami, Qian Wang, Ninshu Ma, Yasuhiro Aoki, Hidetoshi Fujii, Chuantong Chen
Summary: By analyzing and comparing four different tools with varying shapes and rotation speeds, the study revealed that modifying the tool shape can improve the interface structure and bonding strength of silane-coated aluminum alloy and carbon fiber-reinforced polyamide materials in Friction Spot Joining (FSpJ). The presence of nanoscale diffusion layers was observed, but no new type of covalent bonds was generated. Through a comprehensive evaluation of thermal process and mechanical characteristics, the concave-shaped tool (CT) was recommended for FSpJ of aluminum and carbon fiber-reinforced polyamide materials due to its more uniform temperature distribution, improved macro-mechanical interlocking at the interface, good wetting conditions, sufficient chemical reaction and effective joining area, and lower tensile residual stresses.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Qi Wang, Zhen-yuan Jia, Bo-yu Zhang, Dun-lin Gao, Yu Ma, Jing-yuan Liu
Summary: By controlling the temperature during laser direct joining, thermal defects can be avoided and joint performance improved. Establishing temperature simulation and regression models, along with determining constraints, have led to optimized process parameters that enhance joint strength.
MATERIALS & DESIGN
(2021)
Article
Engineering, Aerospace
Caiwang Tan, Jianhui Su, Ziwei Feng, Yifan Liu, Bo Chen, Xiaoguo Song
Summary: By laser texturing the TC4 surface, the wettability of molten CFRTP was significantly improved and the shear force of CFRTP/TC4 joints was increased. When the depth of the grid exceeded 100 micrometers, the contact angle increased and led to a gradual decrease in shear force, indicating incomplete filling.
CHINESE JOURNAL OF AERONAUTICS
(2021)
Article
Materials Science, Multidisciplinary
Qi Zou, Junke Jiao, Jihao Xu, Liyuan Sheng, Yuanming Zhang, Wentai Ouyang, Zifa Xu, Mina Zhang, Hongbo Xia, Ruyu Tian, Xiaowen Cao, Yufan Liu, Ling Zhao
Summary: In this study, an interfacial hybrid pretreatment of laser cleaning and laser plastic-covered processing was introduced to enhance the strength of carbon fiber reinforced thermosetting composites (CFRTS) and TC4 alloy heterogeneous joint. The laser cleaning effectively removed the epoxy resin on CFRTS surface, while the laser plastic-covered processing produced a thermoplastic layer on TC4 surface. The result showed that mechanical interlocks and chemical bonds were formed at the CFRTS-TC4 interface, leading to an improvement in the CFRTS-TC4 joint strength.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Optics
Ying Xu, Hengchang Bu, Feiyun Wang, Wanping Ma, Xiaohong Zhan
Summary: This paper investigates the laser joining of CFRTP and titanium alloy, and verifies the effectiveness of the joining process through numerical simulations and experiments. The results show that the tensile failure load of the joint meets the requirements under the optimized process parameters, and the fatigue failure mode under cyclic loading has also been studied.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Optics
Yifan Liu, Jianhui Su, Guolong Ma, Xiaohui Han, Caiwang Tan, Laijun Wu, Bo Chen, Xiaoguo Song
Summary: Laser texturing on AZ31B magnesium alloy surface significantly improved the wettability of molten CFRTP, reducing the contact angle and increasing tensile-shear force in joints with groove widths of 0.2 mm and 0.3 mm. The formation of a diffusion layer and identification of MgCO3 at the joining interface demonstrated the effective strength improvement through mechanical interlocking and chemical bonding.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Optics
Ying Xu, Hengchang Bu, Feiyun Wang, Wanping Ma, Xiaohong Zhan
Summary: Laser joining technology was used to connect CFRTP and titanium alloy, improving the mechanical properties. Numerical simulations and experimental results showed good agreement, validating the accuracy of the simulation model. The laser joined joint had a high tensile failure load, and exhibited fatigue failure through edge crack growth.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Materials Science, Composites
Zequn Zhang, Hongyun Zhao, Yixuan Zhao, Shijia Wang, Jianhui Su, Bo Chen, Xiaoguo Song, Caiwang Tan
Summary: Metal-polymer hybrid joints have the potential to reduce weight and can be used in transportation industries. In this study, laser texturing was used to enhance the bonding strength of a laser-welded joint between 304 stainless steel and carbon fiber reinforced thermoplastics (CFRTP). The relationship between surface texture spacing and porosity characteristic as well as tensile property of the joint was investigated. It was found that the proper texture spacing improved the uniformity of joint strain distribution and enhanced joint strength.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Multidisciplinary
Xiaohu Hao, Xinlong Wei, Shuhua Li, Zeqin Cui, Wenxian Wang, Honggang Dong, Weiguo Li
Summary: Gas tungsten arc welding with a pure Cu filler wire was used to join TC4 titanium alloy and 304 stainless steel. By regulating the welding current, the concentrated generation of Ti-Fe brittle intermetallic compounds could be effectively restrained. The study found that in the partial fusion welding mode, a mechanical interlocking effect was formed, leading to a high tensile strength of the weld joint.
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
(2023)
Article
Chemistry, Analytical
Yiyun Ye, Qi Zou, Yinan Xiao, Junke Jiao, Beining Du, Yuezhan Liu, Liyuan Sheng
Summary: In this research, laser micro-texturing, anodizing, and hybrid pretreatment methods were used for Al/CFRTP butt joint. Laser micro-texturing created micro-pits or micro-furrows, anodizing formed Al2O3 oxide layer, and hybrid pretreatment fabricated a regular grid structure. The maximum bonding strengths were achieved at 20 MPa for micro-texturing, 11 MPa for anodizing, and the hybrid pretreatment showed relative better bonding strength.
Article
Multidisciplinary Sciences
Yan Zhang, YanKun Chen, JianPing Zhou, DaQian Sun, HongMei Li
Summary: This study achieved the connection between TC4 Titanium alloy and Al2O3 ceramic by laser welding, forming fusion weld and brazed weld. The brazed weld at the Ti-ceramic interface exhibited specific microstructures, leading to the fracture of the joint.
SCIENTIFIC REPORTS
(2021)
Article
Metallurgy & Metallurgical Engineering
Jian Wang, Lingzhong Meng, Zhang Zhang, Baisheng Sa, Xiaoxiao Fu, Liyuan Sheng, Daokui Xu, Yufeng Zheng
Summary: A new ternary compound, Mg11-xZnxSr, in the Mg-Zn-Sr system was analyzed using SEM, EDS, XRD, and TEM. The crystallized phase belonged to the tetragonal I41/amd space group and had the Cd11Ba prototype, with Mg atoms doping into the Zn11Sr crystal lattice. The Rietveld refinement and computational results showed a decrease in lattice parameters with decreasing Mg concentration and an increase in elastic constants with higher Zn content in Mg11-xZnxSr compounds.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Metallurgy & Metallurgical Engineering
B. J. Wang, D. K. Xu, X. Q. Zhuang, L. Y. Sheng
Summary: The tensile behaviors of Mg-8%Li and Mg-8%Li-6%Zn-1.2%Y alloys were compared. The plastic instability of Mg-8%Li alloy was significant, while the addition of I-phase (Mg3Zn6Y) in Mg-8%Li-6%Zn-1.2%Y alloy enhanced tensile strength and eliminated plastic instability, but reduced ductility.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Chemistry, Physical
Junke Jiao, Jihao Xu, Chenghu Jing, Xiangyu Cheng, Di Wu, Haolei Ru, Kun Zeng, Liyuan Sheng
Summary: The effect of laser micro-texturing on the laser bonding of CFRTS and TC4 alloy was studied. It was found that the laser micro-textures with different scanning spacings result in different temperature field distributions on the PA6 interface, leading to a change in heat input on the CFRTS surface. When the laser scanning spacing is 0.3 mm, the joint strength can reach 14.3 MPa.
Review
Chemistry, Analytical
Junke Jiao, Xiangyu Cheng, Jiale Wang, Liyuan Sheng, Yuanming Zhang, Jihao Xu, Chenghu Jing, Shengyuan Sun, Hongbo Xia, Haolei Ru
Summary: Carbon fiber-reinforced composites are widely used in lightweight manufacturing in various industries due to their excellent mechanical properties. Laser machining technology has advantages in processing carbon fiber-reinforced composites, but there are also defects such as heat affected zone, delamination, and fiber extraction. Many works have been carried out to improve the quality of laser machining in carbon fiber-reinforced composites.
Article
Thermodynamics
Siyuan Cheng, Yinan Xiao, Xueshi Li, Hongyang Lin, Peng Hua, Liyuan Sheng
Summary: Elastocaloric refrigeration using superelastic NiTi alloys has gained attention due to its energy-saving potential, environmental friendliness, and low cost. This article presents an analytical model to achieve continuous operation of elastocaloric devices by physically separating the cold and hot areas on NiTi alloys, which facilitates efficient heat release and absorption. Experimental verification was conducted using rotating bending NiTi sheets, and the effects of operation variables on cooling performance were studied. The results are significant for improving the cooling performance of continuous operating elastocaloric devices.
INTERNATIONAL JOURNAL OF REFRIGERATION
(2023)
Article
Chemistry, Physical
Qiaoli Wang, Rui Li, Weixin Xie, Fang Yang, Beining Du, Liyuan Sheng
Summary: In this study, NiAl-Cr(Mo) eutectic alloys with different Ho and Hf additions were fabricated and heat-treated to investigate the synergistic influence of strengthening elements and heat treatment. The results showed that Hf addition led to the formation of Ni2AlHf Heusler phase, while Ho promoted the formation of Ni2Al3Ho phase. Heat treatment affected the microstructure of the alloy and improved its mechanical properties, including increased fracture toughness.
Review
Chemistry, Physical
Hui Zhao, Chaochao Zhao, Weixin Xie, Di Wu, Beining Du, Xingru Zhang, Min Wen, Rui Ma, Rui Li, Junke Jiao, Cheng Chang, Xingchen Yan, Liyuan Sheng
Summary: Titanium (Ti) and its alloys are widely used in aerospace, petrochemical, and medical fields due to their excellent mechanical properties, corrosion resistance, and biocompatibility. However, they face challenges in severe or complex environments. Surface modification through laser cladding has been commonly used to improve the properties and function of Ti and its alloys. This article reviews the technology and development of laser cladding on Ti and its alloys, including cladding technology, materials, and coating function.
Article
Chemistry, Multidisciplinary
Yutian He, Xinghua Zhu, Changxin Zhang, Zhongqing Liu, Baobao Cao, Liyuan Sheng, Yang Yang, Qingguo Feng, Ning Wang, Jian Zhen Ou, Yi Xu
Summary: Electrochemical splitting of water is an efficient pathway to the energy revolution. Efficient non-noble metal catalysts have been developed to overcome the challenge of high cost. A FeCoNiWMo high-entropy alloy with a rhomboidal structure was prepared, promoting water splitting with fast electron transport.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Analytical
Jiajia Wang, Bin Wang, Chenhu Yuan, Aibing Yu, Wenwu Zhang, Liyuan Sheng
Summary: The problems of recast layer, oxide layer, and heat-affected zone in conventional laser machining can be significantly reduced by using coaxial waterjet-assisted laser scanning machining. This method allows the machining of nickel-based special alloy with minimal thermal damage due to the high specific heat capacity of water. Experimental results have shown that compared to laser machining in the air, the thermal damage thickness in CWALSM is smaller and the hole taper is reduced by 106%. The evaluation score for this article is 8 out of 10.
Article
Chemistry, Physical
Li Zhang, Wentai Ouyang, Di Wu, Liyuan Sheng, Chunhai Guo, Licheng Ma, Zhihao Chen, Zhenkai Zhu, Yongxiao Du, Peijuan Cui, Zhanlin Hou, Wenwu Zhang
Summary: Repairing processing, using welding technique, is important for reducing economic loss of damaged high-cost Ti-6Al-4V components. An appropriate matching technique is important for improving welding performance. In this research, ALSP and SLSP techniques were utilized to decrease the influence of macro welding defects on laser-welded Ti-6Al-4V joints.
Article
Chemistry, Physical
Junke Jiao, Shengyuan Sun, Zifa Xu, Jiale Wang, Liyuan Sheng, Jicheng Gao
Summary: This paper presents a hybrid manufacturing process using laser precision packaging technology and Direct Metal Laser-Sintering (DMLS) technology to prepare complex cavity structure parts with high surface quality. The results show that this process effectively solves the problems of poor surface quality and powder sticking in closed inner cavities.
Article
Materials Science, Multidisciplinary
Li Zhang, Wentai Ouyang, Zifa Xu, Xiu Qin, Yirong Yao, Min Wen, Chunhai Guo, Wenwu Zhang, Liyuan Sheng
Summary: Welding is an important method for connecting precision components, but it can decrease performance due to internal stress and crystal anisotropy. In this study, asynchronized laser shock peening (ALSP) and synchronized laser shock peening (SLSP) techniques were used to improve the performance of laser welded Ti-6Al-4V thin plates. The results showed that SLSP processing significantly improved the mechanical properties of the joint and reduced stress concentration, achieving performance levels close to the original material.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Hu Cai, Xiteng Li, Yulin Zhang, Chao Yang, Suihan Cui, Liyuan Sheng, Daokui Xu, Ricky K. Y. Fu, Xiubo Tian, Paul K. Chu, Zhongzhen Wu
Summary: In this study, a three-dimensional multi-interface structured zinc phosphate particle with large specific surface area was prepared and applied in the development of a waterborne epoxy resin coating. The results showed that the multi-interface structured zinc phosphate particles improved the corrosion resistance of the coating, as evidenced by the highest corrosion potential, lowest corrosion current density, and the highest low-frequency impedance. Furthermore, the coated samples with the multi-interface structured zinc phosphate particles exhibited minimal changes in electrochemical properties and maintained high adhesion strength even after immersion in salt solution for 3000 hours.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Yufan Liu, Shengyuan Sun, Jiale Wang, Wentai Ouyang, Jihao Xu, Liyuan Sheng, Zifa Xu, Haolei Ru, Yongyue Liu, Junke Jiao
Summary: A hybrid laser polishing technique combining pulsed laser and continuous wave laser was applied to polish the surface of LDED Inconel 718 samples. The results showed that the remelted layer thickness increased to 50 mm while preserving the columnar microstructure, and the grain size decreased. The wear rate at 25°C decreased by 70.9%, and the average coefficient of friction decreased from 0.42 to 0.29 after laser polishing. The enhancement in wear resistance was attributed to the formation of small-sized and homogeneously distributed fine grains with low angle boundaries.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Chao Yang, Liyuan Sheng, Chaochao Zhao, Di Wu, Yufeng Zheng
Summary: The corrosion of magnesium alloys poses a limitation to their practical applications. By incorporating corrosion-resistant nanoparticles in microarc oxidation (MAO) coating, the corrosion resistance performance can be enhanced. However, excessive addition of these nanoparticles may lead to other issues. In this study, the structure of the MAO passivation layer was regulated using F- salts to generate a low dielectric constant MgF2 phase, reducing the high discharge voltage.
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)
