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  • Open Access

    ARTICLE

    Study on the Effect of Porosity on the Dielectric Characteristics of Polypropylene/Cenosphere Composites

    Janvi Sharma1,*, Mukund N. Bapat2

    Journal of Polymer Materials, Vol.43, No.1, 2026, DOI:10.32604/jpm.2026.072228 - 03 April 2026

    Abstract A new, cost-effective porous polymer composite was developed by reinforcing polypropylene (PP) with cenosphere particles. This study investigates how the composite’s dielectric properties are affected by their porosity. Dielectric constant (ε) measurements were taken over a range of frequencies at room temperature. A theoretical model was developed to explain the electrical conductivity of the porous PP/cenosphere composites. The study thoroughly examined how the inclusion of cenosphere particles influenced key electrical parameters, including dielectric constant, dissipation factor (tanδ), DC (direct current) conductivity, and AC (alternating current) conductivity. The results revealed that increasing the cenosphere content caused a… More >

  • Open Access

    ARTICLE

    Green Synthesis and Characterization of ZnS and ZnS@Ag2S Core–Shell Nanoparticles Using Mint Leaf Extract

    Ruqayah A. Ulwali, Nada K. Abbas*

    Chalcogenide Letters, Vol.23, No.3, 2026, DOI:10.32604/cl.2026.078934 - 03 April 2026

    Abstract In this study, zinc sulfide nanoparticles (ZnS NPs) and zinc sulfide @ Silver sulfide core-shells (ZnS@Ag2S NPs) were prepared using the green method with mint leaf extract as a reducing and coating agent, at varying concentrations of silver nitrate (AgNO3) (0.005, 0.01, and 0.02 M). X-ray diffraction analysis (XRD) results showed the formation of a cubic phase of ZnS NPs and a monoclinic phase of Ag2S with increasing silver nitrate concentration. The average crystalline size of ZnS NPs was calculated to be 2.01 nm and (2.78, 2.65, and 2.13 nm) after Ag2S formation, while the shell (Ag2S) was… More >

  • Open Access

    ARTICLE

    Damage Evolution and Dynamic Characteristics of Arch Dams under Seismic Action

    Shuigen Hu1,2, Hao Wang3, Qingyang Wei4,*, Maosen Cao2,4, Drahomír Novák5

    Structural Durability & Health Monitoring, Vol.20, No.2, 2026, DOI:10.32604/sdhm.2025.073665 - 31 March 2026

    Abstract As vital hydraulic infrastructures, concrete dams demand uncompromising safety assurance. Seismic effect commonly serves as a potential factor contributing to the damage of concrete dams, making seismic performance analysis crucial for structural integrity. Numerical simulation based on damage mechanics is usually considered as the approach for investigating the seismic damage behavior of concrete dams. To address the limitations of existing studies and extract the key dynamic characteristics of concrete arch dams, a concrete elastoplastic damage mechanics model is adopted, a seismic load input technique involving the viscoelastic boundary along with equivalent nodal forces is generated,… More >

  • Open Access

    REVIEW

    Hybrid Fiber Engineered Cementitious Composites (HFECC): A Review

    Qi Feng1,2, Dan Wang3,*, Weijie Hu1, Wenhao Zhao2

    Structural Durability & Health Monitoring, Vol.20, No.2, 2026, DOI:10.32604/sdhm.2025.072968 - 31 March 2026

    Abstract Engineered Cementitious Composites (ECC) represent an advanced class of fiber-reinforced cement-based materials developed over the past three decades, characterized by remarkable tensile strain-hardening and multiple-cracking behavior. By incorporating hybrid fibers, Hybrid Fiber engineered cementitious composites (HFECC) can be tailored to meet specific engineering demands in terms of strength, deformation, dynamic mechanical performance, and cost-effectiveness. This paper provides a comprehensive review of the critical fiber volume theory, experimental investigations into quasi-static and dynamic mechanical properties, and the structural performance of HFECC. Furthermore, current research gaps and future directions for the development and application of HFECC are More >

  • Open Access

    ARTICLE

    Numerical Investigation of the Characteristics of Wind Loads on Offshore Photovoltaic (PV) Panels over Uneven Bottom Boundary

    Yu Shen1, Yi Liu1, Hanchen Zhang2, Liuyang Li3,4, Kaiming Pan5, Qinghe Fang2,*

    Structural Durability & Health Monitoring, Vol.20, No.2, 2026, DOI:10.32604/sdhm.2025.072871 - 31 March 2026

    Abstract This study presents a systematic numerical analysis of wind loads on offshore photovoltaic (PV) panels. A computational fluid dynamics (CFD) model, incorporating a free-surface wave boundary condition, is developed and validated against experimental data. Parametric investigations quantify the effects of wind speed, panel tilt angle, clearance, and wave characteristics on the aerodynamic coefficients (drag, lift, and moment). Results indicate that all force coefficients increase with wind speed, with the lift coefficient being most sensitive to wave action. While a larger tilt angle intensifies airflow disturbance and amplifies the coefficients, this effect is more pronounced over More >

  • Open Access

    ARTICLE

    Application of Wireless Sensor Technology in Processing Random Signals for Urban Bridge Inspections

    Trinh Thi Nhu Quynh1, Hoa-Cuc. Nguyen2, Bich-Ngoc. Mach2, Thanh Q. Nguyen3,4,*

    Structural Durability & Health Monitoring, Vol.20, No.2, 2026, DOI:10.32604/sdhm.2025.070202 - 31 March 2026

    Abstract This study introduces a method for processing various types of random real-world signals from bridges in both experimental models and real-world scenarios using a wireless sensor system. By analyzing and processing signals collected during actual traffic on bridges, the study identifies and provides parameters that meet current quality inspection requirements to ensure the safety of bridge users. The parameters investigated in this study include deformation, natural frequency, amplitude, impact factor, and damping coefficient. Research has determined and highlighted key parameters to assess the quality of bridge spans to meet quality inspection standards. Using actual traffic More >

  • Open Access

    ARTICLE

    Numerical and Experimental Investigation of Filament-End Dynamics in Negative-Pressure Pneumatic Transport

    Yisheng Liu*, Xufeng Sun, Zhifeng Chen

    FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.3, 2026, DOI:10.32604/fdmp.2026.077267 - 31 March 2026

    Abstract This study addresses the optimization of automated yarn handling in textile manufacturing by examining the related suction process through a combined numerical and experimental approach. In particular, a three-dimensional model of the suction nozzle was coupled with an equivalent linear-elastic beam representation of the yarn, and a Fluent–IDW–Abaqus weakly coupled fluid–structure interaction (FSI) framework was employed to capture the yarn’s release and dynamic response under negative-pressure suction. High-speed imaging experiments validated the simulations, demonstrating excellent agreement in displacements and velocities. According to the results, increasing the initial suction pressure from −0.04 MPa to −0.06 MPa More >

  • Open Access

    ARTICLE

    The Combination of Non-Uniform Curved Fins and Nanoparticles for Enhanced Phase Change Heat Storage

    Xujun Gao1, Wei Chen1, Bo Ma1, Rukun Hu1, Liao Zhang1, Yongzhi Lei1, Wenbin Han1, Yuanji Li2, Xiaohu Yang2,*

    FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.3, 2026, DOI:10.32604/fdmp.2026.078389 - 31 March 2026

    Abstract Enhancing the efficiency of phase-change heat storage is vital for maximizing the utilization of renewable energy. This study examines the synergistic effect of non-uniformly shaped fins and nanoparticles on the melting performance of phase-change storage tanks. The problem is addressed using a finite volume framework coupled with the enthalpy–porosity method, with the numerical model rigorously validated against experimental data. The analysis explores the influence of varying fin deflection angles and nanoparticle concentrations on melting dynamics. It is shown that a downward fin deflection of 6° reduces melting time to 570 s, representing a 20.8% improvement More > Graphic Abstract

    The Combination of Non-Uniform Curved Fins and Nanoparticles for Enhanced Phase Change Heat Storage

  • Open Access

    REVIEW

    Wheel Flow Instabilities and Drag Control in Automotive Aerodynamics: A Comprehensive Review

    Heming Xu1, Haichao Zhou1,*, Wei Zhang1, Wenxuan He1, Lin Bo2

    FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.3, 2026, DOI:10.32604/fdmp.2026.075610 - 31 March 2026

    Abstract This review addresses four key themes in automotive aerodynamics: flow instability in the wheel region, the aerodynamic characteristics of rims, the aerodynamic behavior of tires, and drag reduction strategies based on flow control around the wheels. The wheel region, comprising the tire, rim, and adjacent aerodynamic components, typically represents the major source of vehicle drag owing to the inherently complex flow generated by wheel rotation, tread geometry, and rim design, which gives rise to flow separation, vortex shedding, and turbulence. Drawing on a broad body of experimental and numerical research, this review elucidates the mechanisms More >

  • Open Access

    ARTICLE

    Towards Real-Time Multi-Person Pose Estimation via Feature Selection and Sharpening Mechanisms

    Chengang Dong1,2, Yongkang Ding2, Jianwei Hu1,3,*

    CMES-Computer Modeling in Engineering & Sciences, Vol.146, No.3, 2026, DOI:10.32604/cmes.2026.079062 - 30 March 2026

    Abstract Real-time multi-person pose estimation (MPE) built upon neural network architectures aims to simultaneously detect multiple human instances and regress joint coordinates in dynamic scenes. However, due to factors such as high model complexity and limited expression of keypoint information, both the efficiency and accuracy of real-time MPE remain to be improved. To mitigate the adverse impacts caused by the aforementioned issues, this work develops FSEM-Pose, a real-time MPE model rooted in the YOLOv10 framework. In detail, first, FSEM-Pose upgrades the backbone module of the baseline network by introducing the Feature Shuffling-Convolution (FS-Conv), which effectively reduces More >

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