Article
Engineering, Multidisciplinary
Carlos Rubio-Gonzalez, Maria del Pilar de Urquijo-Ventura, Julio A. Rodriguez-Gonzalez
Summary: In this study, the combination of acoustic emission (AE) and self-sensing capability provided by carbon nanotube (CNT) networks was used for monitoring damage progression in glass fiber epoxy composites under flexural loading. Different stacking sequences of specimens were prepared using the vacuum assisted resin infusion procedure. Analysis of the recorded acoustic signals identified various damage mechanisms, and electromechanical response and AE parameters captured specific failure events during the composites' damage evolution. Scanning electron microscopy revealed less damage severity in specimens with CNT due to reinforcement effect. This study demonstrates the complementarity of non-destructive inspection techniques and self-sensing capability for monitoring damage progression in composite structures.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Engineering, Manufacturing
Yuanyuan Wu, Limeng Xun, Shuwei Huang, Chunlei Ren, Baozhong Sun, Bohong Gu
Summary: The study shows that the braided architecture has a positive impact on the thermal oxygen ageing behaviors of carbon fiber/epoxy composites, slowing down the initiation and propagation of cracks and helping to maintain the stiffness and damping properties of the materials after ageing.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Manufacturing
Yutong Fu, Xuefeng Yao, Xuhao Gao
Summary: This paper investigates the void generation in 3D braided composites during RTM process and optimizes its manufacturing technology. By deriving governing equations and simulating the RTM process using FEM, the study analyzes the effects of resin parameters on void distributions and contents in 3D braided composite cells. The results provide a theoretical basis for analyzing void generation and evaluating the quality of 3D braided composites made by RTM technology.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Chemistry, Analytical
Shichang Xu, Gang Cheng, Yusong Pang, Zujin Jin, Bin Kang
Summary: A method of identifying longitudinal rips on a conveyor belt through 3D point cloud processing is proposed in this study, which has been tested to show real-time accuracy and effective characterization of the rips in practical experiments.
Article
Computer Science, Artificial Intelligence
Jingwei Chen, Jianyong Zhu, Hongyun Jiang, Hui Yang, Feiping Nie
Summary: This article proposes a clustering method called P_SFCM that combines principal component analysis and membership learning to improve the robustness of noise. Experimental results show that P_SFCM is competitive with other methods.
IEEE TRANSACTIONS ON FUZZY SYSTEMS
(2023)
Article
Engineering, Mechanical
Dian-sen Li, Wen-fen Han, Lei Jiang
Summary: This paper investigates the high strain rate impact effect and failure behavior of three-dimensional six-directional (3D6d) braided composites. The results indicate that the composites exhibit typical strain rate sensitivity, with increased strength and modulus but decreased failure strain as the strain rate rises. Additionally, composites with larger braiding angles show higher dynamic curves and improved high strain rate properties.
EXTREME MECHANICS LETTERS
(2021)
Article
Computer Science, Artificial Intelligence
Feiping Nie, Xiaowei Zhao, Rong Wang, Xuelong Li, Zhihui Li
Summary: Fuzzy K-Means (FKM) clustering is an important method for analyzing unlabeled data. Current methods may lead to suboptimal results due to the influence of noises and redundant features, as well as ignoring the importance of the weighting exponent. In this paper, a novel FKM method is proposed that conducts dimensionality reduction and fuzzy membership degree learning simultaneously, incorporating principal component analysis for improved robustness.
IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Weiguo Wu, Wei Wei, Yanju Wang, Aixue Sha, Wenfeng Hao
Summary: In this paper, tensile tests were conducted on SiCp/Al composites and the acoustic emission method was used to monitor damage progression. The collected signals were analyzed in the time-frequency domain. The damage modes and failure mechanisms of SiCp/Al composites were characterized using principal component analysis and fuzzy clustering method on the AE signals. Three main damage modes were identified: SiC/Al interface debonding, Al fracture, and SiC particle fracture. The fracture surface was analyzed using scanning electron microscopy and energy spectrum analysis, confirming the results of AE. The research results of this paper provide experimental support for the design and engineering application of SiCp/Al composites.
FRONTIERS IN MATERIALS
(2022)
Article
Engineering, Chemical
Soleiman Hosseinpour, Alex Martynenko
Summary: The study evaluates food quality by mapping food quality attributes into multi-dimensional fuzzy sets using PCA and subtractive clustering. The methodology shows promising results in real-time quality evaluation for shrimp batch drying, with computational time below 1 second. The data-driven algorithm has unlimited potential for real-time fuzzy control and optimization.
Article
Computer Science, Artificial Intelligence
Yunlong Gao, Tingting Lin, Jinyan Pan, Feiping Nie, Youwei Xie
Summary: This paper proposes a new technique called Fuzzy Sparse Deviation Regularized Robust Principal Component Analysis (FSD-PCA) to improve the robustness of Principal Component Analysis (PCA) to noise samples. By introducing sparse deviation and fuzzy weighting, FSD-PCA is able to process noise and principal components separately, thus enhancing its ability to retain principal component information.
IEEE TRANSACTIONS ON IMAGE PROCESSING
(2022)
Article
Polymer Science
Di Zhang, Xitao Zheng, Jin Zhou, Xinyi Song, Pu Jia, Haibao Liu, Xiaochuan Liu
Summary: The mechanical properties of three-dimensional braided composites (3DBC) decrease with increasing braiding angle. Different types of 3DBC exhibit different mechanical properties at different angles. Additionally, the tensile strength is generally twice as much as the compressive strength, and the compressive modulus is consistently 10% higher than the tensile modulus. The failure modes of 3DBC are also affected by the braiding angle.
Article
Polymer Science
Junjun Zhai, Xiangxia Kong, Luchen Wang, Shi Yan, Lili Jiang, Zhiwei Cai
Summary: A new alternative calculation procedure is developed to quantify the effect of yarn distortion characteristics on the mechanical properties of 3D braided carbon/resin composites. The proposed procedure captures the yarn path and cross-section distortion characteristics caused by the mutual squeeze of component materials, which is difficult to characterize experimentally. The procedure is an efficient tool for the design and structural optimization analysis of materials with anisotropic properties or complex geometries.
Article
Physics, Applied
Kaixin Liu, Qing Yu, Weiyao Lou, Stefano Sfarra, Yi Liu, Jianguo Yang, Yuan Yao
Summary: Non-destructive ultrasonic testing is important for monitoring the structural health of polymer composites. However, ultrasonic data often appear as noisy signals or images containing artifacts. To reduce human factors, this study proposes an unsupervised method, using nonlinear dimensionality reduction and semantic segmentation, to effectively detect subsurface defects in composite materials.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Environmental Sciences
Rongwen Yao, Yuting Yan, Changli Wei, Ming Luo, Yong Xiao, Yunhui Zhang
Summary: This study reveals the hydrochemical process and assesses groundwater quality in the northern part of the Sichuan Basin using hydrochemical analysis and various statistical methods. It identifies both natural and anthropogenic factors contributing to the hydrochemical compositions and categorizes the groundwater into two types based on similarities in ion concentrations. The findings provide important references for groundwater protection in the Sichuan Basin.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Xiang-bin Du, Hao Zhu, Jing Ai, Dian-sen Li, Lei Jiang
Summary: The parametric finite element model established for 3D5d braided composites effectively predicts progressive damage and strength, with main failure modes identified and stress-strain curves showing brittle fracture characteristics. Mechanical properties are significantly correlated with braiding angle and fiber volume fraction.
MATERIALS & DESIGN
(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)