Article
Materials Science, Composites
Chunrui Lu, Siqi Li, Xue Lu, Ji Ma, Wenlong Ma, Xiaodong Wang, Shuhong Ba
Summary: Combining shear thickening fluid (STF) and carbon nanotubes (CNTs) with traditional Kevlar fabrics shows promise in improving mechanical properties and reducing thickness in body protection. This research introduces a new method for producing STF/CNTs/Kevlar composites with enhanced tensile properties and anti-impact performance using a polyvinyl alcohol (PVA) solution as a binder. The composites exhibit increased tensile strength and improved anti-impact properties due to better bonding and friction between yarns, as well as the increased viscosity of STF under forces.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Multidisciplinary
Danyang Li, Rui Wang, Fuwang Guan, Yujing Zhu, Feifei You
Summary: This study investigates the influence of distribution and quantity of shear thickening fluid (STF) on the stab resistance performance and weight of STF/Kevlar (SK) fabrics. The tests show that uniform distribution of SiO2 nanoparticles in Kevlar fabrics significantly improves stab resistance force and weight gain. Additionally, the added STF has minimal impact on fabric flexibility, and the high inter-yarn friction of SK fabric enhances yarns' resistance to relative motion, maximizing the impact energy dissipation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Biochemistry & Molecular Biology
Rubin Wei, Bin Dong, Wen Zhai, Hui Li
Summary: This study designed and prepared three types of soft stab-proof materials by using shear thickening fluid (STF) treatment to enhance the material performance. The results showed significant improvement in puncture and impact resistance of the STF-treated fabrics. Mechanical properties of the fibers and fabric structure played crucial roles in resisting knives.
Article
Mechanics
Xiayun Zhang, Ting-Ting Li, Hao-Kai Peng, Ching-Wen Lou, Jia-Horng Lin
Summary: The research shows that stab-resistant composites prepared using STF and TPU have improved stab resistance performance while maintaining good flexibility. During the preparation process, the shear thickening effect of STF contributes to enhancing the performance of the composite material.
COMPOSITE STRUCTURES
(2022)
Article
Chemistry, Physical
Tao Hai, Fahad Mohammed Alhomayani, Kamal Sharma
Summary: A series of shear thickening fluids (STFs) based on dispersed fumed silica in virgin polyethylene glycol (V/PEG) and modified PEGs by malonic acid (M/PEG) and tartaric acid (T/PEG) were prepared. The modification of PEG to a higher chain length of medium molecules significantly improved STF peak viscosity and reduced the critical shear rate. The treated fabrics with V/STF, M/STF, and T/STF showed remarkable improvement in high-velocity impact resistance compared to the neat fabric targets.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Materials Science, Textiles
Muhammad Imran Khan, Muhammad Umair, Rizwan Hussain, Yasir Nawab
Summary: This study compared the mechanical performance of para-aramid fabric treated with STF made with different percentages of silica particles, showing that fabric impregnated with 7% silica microparticles STF had higher tensile strength, puncture resistance, and impact resistance compared to fabric without STF.
JOURNAL OF THE TEXTILE INSTITUTE
(2022)
Article
Chemistry, Physical
Zhenguo Wang, Yu Zhang, Pingping Tang, Zhiming Deng, Ping He, Meng-Jie Chen, Zhong-Zhen Yu, Hao-Bin Zhang
Summary: In this study, highly conductive and strong graphene fibers were fabricated by controlling the rheology and spinnability of silk fibroin (SF) solution. The amphiphilic SF formed hydrogen bonds and 7C-7C interactions with graphene oxide (GO) sheets, enhancing the gel strength of spinning solution and enabling conformation adjustment and sheet alignment of GO/SF fibers under large drawing ratio. After chemical reduction, the fibers exhibited exceptional tensile strength and high electrical conductivity, making them suitable for versatile applications in multifunctional fabrics, energy conversion, and health protection.
Article
Chemistry, Multidisciplinary
Zetong Zhuang, Hongwu Chen, Chun Li
Summary: In this study, high-performance MXene films with excellent mechanical properties and electromagnetic interference shielding performance were successfully produced through a spatially confined evaporation approach. The films exhibited high tensile strength, modulus, and electrical conductivity, as well as superior EMI shielding effectiveness.
Article
Engineering, Environmental
Yucheng Pan, Min Sang, Junshuo Zhang, Yuxi Sun, Shuai Liu, Yuan Hu, Xinglong Gong
Summary: In extreme environments, material design should consider not only impact protection performance but also thermal stability and flame resistance. A flexible and lightweight shear-hardened composite material (STF/Kevlar) was prepared by impregnating and drying shear thickening fluid (STF) on Kevlar fabric to achieve impact resistance, thermal stability, and flame resistance. This multi-functional composite material is expected to be widely used in the field of lightweight protection.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Multidisciplinary Sciences
Vikram Rathee, Joia Miller, Daniel L. Blair, Jeffrey S. Urbach
Summary: We directly measured the stress at the boundary of a shear-thickening cornstarch suspension and found persistent regions of high local stress propagating in the flow direction. The structure of these propagating fronts was determined, including the profile of boundary stress and the nonaffine velocity of particles. We also measured the relative flow between the particle phase and the suspending fluid and found it to be highly localized to the fronts and changing direction across the front. These fronts are composed of a localized region of high dilatant pressure and low particle concentration.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Chemistry, Physical
Wei-Wei Kong, Jun-Feng Shi, Kang-Kang Zou, Nan Li, Yue-Yi Wang, Ding -Xiang Yan, Zhong-Ming Li
Summary: The development of structure-function integrated materials is an important trend in the military field. This study successfully developed a composite material with superior electromagnetic interference shielding property by modifying the resin and carbon fibers.
Article
Engineering, Environmental
Shusheng Chen, Ying Zhao, Heng Zhang, Peidong Xu, Zhenyu Jiang, He Zhang, Jinglei Yang
Summary: In this study, a solvent-evaporation approach was used to microencapsulate a multifunctional self-adaptive material, called ionic liquid-based shear thickening fluid (ILSTF). The resulting microcapsules exhibited high thermal stability and controllable size, and were incorporated into an elastomer matrix to enhance energy absorption ability. The ILSTF microcapsules also showed potential for applications in deformable circuits and battery safety.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Composites
Chengbao Wang, Yabin Guo, Jianwen Chen, Yutian Zhu
Summary: In this study, a simple yet effective method was proposed to fabricate flexible, transparent, and high electromagnetic interference (EMI) shielding films using Ag nanowires (AgNWs)/ionic liquids (ILs)/thermoplastic polyurethane (TPU) ternary composites. The prepared AgNWs/ILs/TPU film exhibited a transmittance of 67% and an EMI shielding effectiveness of about 26.8 dB at 10 GHz, attributed to the low-density but highly interconnected AgNW network and synergistic effect of AgNWs and ILs on composite conductivity. Additionally, the film showed excellent durability and stability in EMI shielding properties even after 1000 bending cycles or exposure to acidic or alkali solutions. These exceptional performances make the prepared film highly promising for flexible and transparent EMI shielding applications.
COMPOSITES COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Minghai Wei, Kun Lin, Li Sun
Summary: This paper provides a comprehensive review of shear thickening fluids (STFs), including their basic properties, classification, and rheological mechanism evolution. It discusses the factors influencing the shear thickening behavior of STFs and presents several computational models. Furthermore, it summarizes the research progress of STF-based composites in various fields and explores the applications of STFs in energy dissipation.
MATERIALS & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
E. Islam, L. Nebhani
Summary: This study investigates the influence of porosity and boron on the shear thickening behavior of hybrid mesoporous silica. The addition of boron and presence of porosity promote the formation of a frictional contact network, leading to a transition from continuous shear thickening (CST) to discontinuous shear thickening (DST) behavior.
MATERIALS TODAY CHEMISTRY
(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)