Review
Computer Science, Interdisciplinary Applications
Aman Garg, H. D. Chalak, A. M. Zenkour, Mohamed-Ouejdi Belarbi, Mohammed-Sid-Ahmed Houari
Summary: This article reviews the research on vibration, static and buckling analysis of nano sandwich, nano FG, and carbon nanotube reinforced nanocomposite plates, beams, and shells, highlighting the theories and methodologies adopted. The discussion includes size-dependent and size-independent theories, as well as hygrothermal-based analysis of nanostructures, categorizing the review based on materials used and theory-based grouping of research. Critical discussions are conducted for each material type, with outlooks for future studies.
ARCHIVES OF COMPUTATIONAL METHODS IN ENGINEERING
(2022)
Article
Mathematics, Applied
Ehsan Maani Miandoab
Summary: The paper investigates the impact of size on the chaotic region of nano-resonators and finds that the chaotic region in the bifurcation diagram varies significantly with changes in bias voltage. Lyapunov exponent is used to validate the chaotic region and shows good agreement with the bifurcation diagram.
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2021)
Article
Materials Science, Ceramics
Shuo Qiao, Feng Shi, Ye Tian, Zhaoyang Jiao, Ping Yang, Wanli Zhang
Summary: This paper investigates the removal efficiency of fused silica material using different nozzle structures during nanoSiO2 jet polishing. The results show that the removal efficiency of single-slit nozzle is 2.55 times higher than that of single-hole nozzle, and the removal efficiency of multi-slit nozzle is 1.65 times higher than that of the single-slit nozzle. Moreover, using a slit nozzle structure can achieve super-smooth machining of fused silica surface.
CERAMICS INTERNATIONAL
(2022)
Article
Mechanics
Quang-Thai Nguyen, Van-Tu Nguyen, Thanh-Hoang Phan, Trong-Nguyen Duy, Seong-Ho Park, Warn-Gyu Park
Summary: This paper numerically studies the dynamics of initially spherical bubble collapse near an oscillating rigid wall. Numerical simulations were conducted using a compressible two-phase flow model and the volume of fluid (VOF) interphase-sharpening technique on a general curvilinear moving grid. The effects of the oscillating wall on bubble collapse were investigated, and the interface deformation, jetting behavior, bubble collapse time, and bubble migration were determined.
Article
Engineering, Multidisciplinary
Jie Wang, Junhua Xiao
Summary: This paper develops a novel continuum mechanics model to investigate the influence of surface effects on the bending and free vibration behaviors of Kirchhoff rectangular nano laminates. The results show that the influences of surface effects on bending deflections and natural frequencies are related to the aspect ratio of the nano laminates and the value of residual surface stress. Moreover, the influence of surface effects can be ignored when the thickness of the nano laminate is large enough.
APPLIED MATHEMATICAL MODELLING
(2022)
Article
Acoustics
Hongyun Wang, Heow Pueh Lee, Canyi Du
Summary: Constrained layer damping structures with viscoelastic material are widely used in engineering for vibration reduction. Optimal designs depend on understanding damping characteristics, while multi-layer CLD structures may be necessary for more effective vibration suppression. This paper introduces a modeling and optimization method for CLD structures, analyzing the effects of layer thickness ratios and constraints on damping properties. The conclusions provide insights into the impact of layer thicknesses on CLD structures, regardless of size, and the methods presented can be applied beyond CLD structures.
SHOCK AND VIBRATION
(2021)
Article
Engineering, Mechanical
Haojiang Zhao, Yang Feng, Wei Li, Chuang Xue
Summary: This study focuses on the integrated coupling design of vibration isolation and structure support using topology optimization in order to achieve a macro structure with both high support structure stiffness and lower frequency vibration isolation bandgaps. The results show the topology optimized structures with different mechanisms of bandgaps obtained from the Pareto front.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Thermodynamics
Abdulmajeed Almaneea
Summary: This study successfully implemented the finite element method to complex mathematical models and investigated the impact of Sisko fluid and nano-structures on the stress-strain relationship. The results showed that the increase in shear stress and heat flux due to hybrid nanostructures was greater than that of mono nano-fluid, and the boundary layer thickness of the hybrid nanofluid was wider. The magnetic field caused drag on the surface and viscous dissipation contributed to increasing fluid temperature.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Engineering, Aerospace
M. S. H. Al-Furjan, Z. H. Qi, L. Shan, A. Farrokhian, X. Shen, R. Kolahchi
Summary: Corrugated nanostructures have attracted significant attention due to their high electrical conductance, fast charge-discharge capability, and moderate energy densities. This article presents a mathematical modeling approach to study the wave propagation and vibration of a nano supercapacitor made from corrugated graphene (CG) layer and nano piezoelectric face sheets. The effects of various factors, such as nonlocal parameter, local phase fraction factor, thickness of core and face sheets, surface stress, residual stress, and external voltage, are investigated. The numerical results demonstrate that the frequency and wave propagation of the nanostructure can be reduced by using the piezoelectric layers and applying a negative external voltage.
AEROSPACE SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Fengjun Chen, Jianhua Du, Shuai Huang
Summary: A novel superhydrophobic fabrication method based on ultrasonic cavitation was proposed in this study, which utilized cavitation bubbles to create a microstructure with high roughness and anchor SiO2 nanoparticles on the surface to form a micro-nano composite structure. The superhydrophobic surfaces exhibited excellent anti-corrosive durability and repairable properties.
APPLIED SURFACE SCIENCE
(2021)
Review
Chemistry, Physical
Hongtao Gao, Yiming Jian, Yuying Yan
Summary: The formation and accumulation of ice have negative effects on commercial surfaces and human lives. Increasing surface hydrophobicity decreases ice adhesion strength, and superhydrophobic surfaces can be created by combining low surface free energy and high surface roughness. Inspired by bio-mimetic studies on biological surfaces, artificial bio-inspired superhydrophobic surfaces have been widely designed and constructed, with both superhydrophobic and anti-icing/icephobic properties.
Review
Engineering, Civil
Mir Abbas Roudbari, Tahereh Doroudgar Jorshari, Chaofeng Lu, Reza Ansari, Abbas Z. Kouzani, Marco Amabili
Summary: Researchers have been debating the mechanical behavior of micro-/nano-structures recently, emphasizing the importance of size-dependent theories from the perspective of non-classical material behavior. The application of continuum mechanics models, rather than classical theories, in studying these small-scale structures can lead to more accurate analysis of their performance and behavior.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Mechanical
Chao Xu, Zhengzhong Wang, Huijun Li
Summary: In this study, the dynamic instability of frame structures is explored through the development of a direct finite element numerical simulation procedure. The results reveal that flexural-torsional vibration deformations of frames can significantly increase the size and intensity of unstable regions, posing a threat to the dynamic stability of frame structures. The proposed dynamic instability index provides an intuitive characterization of unstable regions.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Mechanics
Alessandro Fasana, Pieralfonso Montanaro, Stefano Simone, Luca Viale
Summary: This paper investigates the effects of granular damping technology and a silicone ring on the dynamic properties of sports racquets, particularly tennis racquets. The study aims to reduce injuries and improve playing experience by enhancing damping and reducing vibrations. Numerical and experimental results confirm the effectiveness of the granular solution in reducing racquet vibrations and improving performance and player experience.
Article
Engineering, Electrical & Electronic
Ricardo A. Marques Lameirinhas, Joao Paulo N. Torres, Antonio Baptista, Maria Joao M. Martins
Summary: In this article, a new stochastic method based on the ray model of light in absorbing media is presented for simulating the light patterns near nanoantennas. The method allows calculation of the probability of photon movement and validation of the simulated results. It is found that nanoantennas can achieve light confinement and extraordinary optical transmission phenomena.
IEEE PHOTONICS JOURNAL
(2022)
Article
Mechanics
Adel Bidzard, Parviz Malekzadeh, Saeed Reza Mohebpour
Summary: A nonlinear finite element model based on MSGT and FSDT is developed for analyzing the free vibration of FG-GPLRC toroidal micropanels. The study considers the impacts of geometric parameters, thickness-to-MLSP ratio, temperature rise, coefficients of elastic foundation and rotational springs, as well as different GPLs distribution patterns on the nonlinear vibrational behaviors of the micropanels.
COMPOSITE STRUCTURES
(2022)
Article
Mechanics
Farhad Serajzadeh, Parviz Malekzadeh
Summary: This study investigates the dynamic responses of curved sandwich beams with functionally graded carbon nanotube reinforced composite face sheets and porous core subjected to low velocity impact. A layerwise-finite element approach based on the two-dimensional elasticity theory is used to accurately simulate the dynamic behavior. The contact force is estimated using the modified Hertz law. Parametric studies are carried out to examine the effects of carbon nanotube distribution patterns, impactor velocity, curved beam opening angle, length-to-thickness ratio, and core-to-face sheet thickness ratio on the responses of the sandwich curved beams.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
Article
Engineering, Civil
Amin Ghorbani Shenas, Sima Ziaee, Parviz Malekzadeh
Summary: The size-dependent nonlinear free vibration characteristics of rotating functionally graded trapezoidal microplates are studied using a four variable refined plate theory coupled with the modified strain gradient theory. The effects of different geometric and material parameters on the nonlinear to linear frequency ratio are investigated. It is found that rectangular microblades have higher frequencies than trapezoidal ones, and the temperature rise has a hardening effect while the length scale parameter has a softening effect on the frequency ratio.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Yasin Heydarpour, Parviz Malekzadeh, Hanxing Zhu
Summary: This research investigates the dynamic responses of multilayer functionally graded graphene platelets reinforced composite spherical panels under blast loading. The motion equations are discretized using a numerical method, and the results are validated through comparison. The effects of different parameters on the transient responses are studied through parametric analysis.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2022)
Article
Engineering, Marine
H. Ghadirian, S. R. Mohebpour, P. Malekzadeh, F. Daneshmand
Summary: This paper investigates the possibility of increasing pipeline stability by using composite pipes reinforced by carbon nanotubes, deriving equations of motion using a higher order shear deformation theory and finite element analysis. The study also examines the effects of various parameters on the vibration characteristics and stability limits of composite pipes conveying fluid, comparing results with traditional beam theories.
Article
Mechanics
Hossein Ghadirian, Saeidreza Mohebpour, Parviz Malekzadeh, Farhang Daneshmand
Summary: This paper studies the nonlinear free vibrations and stability of pipes conveying fluid constructed of Functionally Graded Carbon Nano-Tube Reinforced Composite (FG-CNTRC) materials. The material properties are graded within the thickness direction and estimated using the modified rule of mixtures. The nonlinear effects are considered using the von K'arm'an geometric nonlinear theory. The system is numerically investigated using the super convergent finite element method, and the Newmark and Newton-Raphson methods are applied to solve the resulting set of ordinary nonlinear differential equations. The mathematical approach's applicability is studied through several numerical investigations.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Mechanical
Moosa Khooran, Mohammad Reza Golbahar Haghighi, Parviz Malekzadeh
Summary: This paper proposes a multi-window stacking method with simple architectures to accurately estimate remaining useful life (RUL). The method trains simple networks on preprocessed time series with different window lengths and uses ridge regression to determine the weights of multiple predictions. Experimental results show the superiority of this method compared to other models on the same dataset.
IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY-TRANSACTIONS OF MECHANICAL ENGINEERING
(2023)
Article
Engineering, Mechanical
Ehsan Mahmoodi, Parviz Malekzadeh, Saeed Reza Mohebpour
Summary: This paper presents an analytical transient analysis of a functionally graded (FG) coated cylindrical bar weakened by multiple radial cracks under torsional transient loading. The study provides insight into the dislocation stress field, dislocation density function, dynamic stress intensity factors (DSIFs), and torsional rigidity, while exploring the effects of various factors on the results.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2022)
Article
Engineering, Civil
F. Bahranifard, P. Malekzadeh, M. R. Golbahar Haghighi
Summary: This article investigates the dynamic responses of sandwich truncated conical shells with graphene platelets reinforced composite (GPLRC) face sheets, porous core, and circumferential stiffeners under asymmetric internal ring-shaped moving load. The study explores the influences of various factors such as core porosity, face sheets, GPL parameters, shell geometric parameters, boundary conditions, and the arrangement, number, and size of stiffeners on the results. It is found that porosity, face sheets, and stiffener parameters play important roles in the dynamical response of the shells under investigation.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Multidisciplinary
Quoc-Hoa Pham, Van Ke Tran, Trung Thanh Tran, Phu-Cuong Nguyen, Parviz Malekzadeh
Summary: A finite element modeling combined with the strain gradient theory (SGT) and the refined higher-order shear deformation beam theory is developed to study the dynamic instability of magnetically embedded functionally graded porous (FGP) nanobeams. The influences of various parameters on the dynamic instability of nanobeams are studied in detail, revealing their effects on the behavior of nanobeams.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Mechanics
Ahmad Reza Noroozi, Parviz Malekzadeh
Summary: This study investigates the nonlinear response of multilayer functionally graded graphene platelets reinforced composite (FG-GPLRC) skew plates under moving load. Nonlinear kinematic relations are derived based on higher-order shear deformation theory and von K'arm'an nonlinear geometric assumptions. A meshfree radial point interpolation method is used to discretize the motion equations. Different boundary conditions are imposed using the mixed collocation-Lagrange multiplier method. The results show that the dynamic magnification factor of the multilayer FG-GPLRC skew plates based on the nonlinear theory is lower than the one based on the linear theory.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Mechanical
Vahid Shokouhifard, Saeedreza Mohebpour, Parviz Malekzadeh
Summary: This study investigates the linear and nonlinear free vibration behaviors of carbon nanotubes (CNTs) reinforced multiphase magneto-electro-elastic (MEE) deep plane-curved beams. The MEE material consists of piezoelectric Barium Titanate and piezomagnetic Cobalt ferrite. Uniform and different functionally graded distributions of CNTs along the beam thickness direction are considered. The effective material properties of CNT-reinforced MEE beams are estimated using the rule of mixture. The governing equations are derived based on the first-order shear deformation beam theory (FSDBT) with von Karman's geometric nonlinearity assumptions and the space domain is discretized using the differential quadrature method (DQM). Harmonic balance and direct-iterative methods are then used to obtain linear and nonlinear natural frequencies of the beam. The present approach is validated by its fast convergence rate and the numerical results are compared with existing literature for different straight and curved beams. The influences of various parameters on the linear and nonlinear fundamental frequencies of the CNT-MEE deep plane-curved beams are studied. It is found that considering the magnetic effects can increase the linear and nonlinear fundamental frequencies by about 3.1% and 7.2% respectively.
IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY-TRANSACTIONS OF MECHANICAL ENGINEERING
(2023)
Article
Engineering, Civil
Quoc-Hoa Pham, Parviz Malekzadeh, Van Ke Tran, Trung Nguyen-Thoi
Summary: In this study, a two-node beam element enriched based on the Lagrange and Hermite interpolation function is proposed to solve the governing equation of a functionally graded porous (FGP) curved nanobeam on an elastic foundation in a hygro-thermo-magnetic environment. The material properties of curved nanobeams change continuously along the thickness via a power-law distribution, and the porosity distributions are described by an uneven porosity distribution.
FRONTIERS OF STRUCTURAL AND CIVIL ENGINEERING
(2023)
Article
Computer Science, Interdisciplinary Applications
M. Shojaee, I. Valizadeh, D. K. Klein, P. Sharifi, O. Weeger
Summary: In this paper, a validated multiscale modeling framework for additively manufactured shell lattice structures with graded parameters is introduced. The framework is demonstrated using the Schwarz primitive triply periodic minimal surface microstructure and 3D printing. The accuracy and reliability of the framework are investigated and discussed, and it is shown that it can be applied to the design of functionally graded structures.
ENGINEERING WITH COMPUTERS
(2023)
Article
Mechanics
Farshid Bahranifard, Parviz Malekzadeh, Mohammad Reza Golbahar Haghighi, Mahmoud Malakouti
Summary: In this study, the vibrational behaviors of point supported truncated conical sandwich shells are investigated. The point supports are simulated using elastic springs and the motion equations are derived using a zigzag shell theory. The results show that the number of point supports, porosity and its distribution, graphene platelets content, and circumferential stiffeners have significant effects on the vibration frequencies of the shells.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
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)
