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  • Open Access

    ARTICLE

    Fine-Scale Velocity Measurement of High-Pressure Transient Multiphase Jets via Adaptive Feature Enhancement and Improved Window Deformation PIV

    Jialei Jiang1, Jiayuan Luo2,3,*, Yan Su1, Weiqiang Xiao1, Jiajun Lu4, Haodong Liu5, Yuqi Huang2

    Frontiers in Heat and Mass Transfer, Vol.24, No.4, 2026, DOI:10.32604/fhmt.2026.083123 - 31 August 2026

    Abstract Quantitative measurement of the high-speed gas-liquid-solid multiphase jets generated during the transient discharge of high-pressure vessels remains a significant challenge. Traditional Particle Image Velocimetry (PIV) techniques often fail in these scenarios due to the intense self-luminous interference, high transient velocities, and the absence of pre-seeded tracer particles. To address these issues, this paper proposes a robust non-intrusive measurement scheme integrating an adaptive image enhancement strategy with an improved cross-correlation algorithm. First, a preprocessing framework combining Contrast Limited Adaptive Histogram Equalization (CLAHE) and frequency-domain high-pass filtering is developed to suppress background noise and reconstruct fluid textures… More >

  • Open Access

    ARTICLE

    Electromagnetic Coupling and Diagnostic Test Analysis of Power Transformer Turn-to-Turn Short Circuit

    Tao Tong1,*, Peng Wang1, Xiaolin Zhao2, Zhigang Zhao2, Ke Wang2, Chen Cao3, Xincai Ming4

    Energy Engineering, Vol.123, No.10, 2026, DOI:10.32604/ee.2026.078218 - 30 August 2026

    Abstract The power transformer serves as a critical hub equipment in the electric power industry, performing the core functions of voltage transformation and power transmission in power grids. Among various potential hazards, through-fault short-circuit impacts are particularly destructive, capable of inducing severe deformation of the transformer windings and even triggering internal faults, thereby posing a major threat to grid stability. Consequently, accurate diagnosis of transformer damage after short-circuit impacts and scientific formulation of targeted overhaul strategies are of vital practical significance for ensuring safe and reliable power supply. In this paper, a comprehensive diagnostic analysis method… More >

  • Open Access

    ARTICLE

    Experimental Investigation of Seepage-Induced Rheological Deformation in Mucky Soft Soil Containing Medium-Fine Sand

    Longbin Lin1, Hua Hu2,*

    FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.7, 2026, DOI:10.32604/fdmp.2026.085657 - 31 July 2026

    Abstract Seepage-induced rheological deformation represents a critical factor governing the long-term stability of coastal soft-soil excavations subjected to intense rainfall infiltration and groundwater fluctuations. This study elucidates the individual and interactive effects of seepage pressure and seepage duration on the time-dependent deformation behavior of undisturbed mucky soft soil containing medium-fine sand, collected from a deep foundation pit. A comprehensive experimental campaign based on triaxial seepage-shear rheological testing for a confining pressure of 180 kPa is presented, encompassing sixteen combinations of seepage pressure and duration together with a directly measured zero-seepage reference condition. Three replicate specimens are… More >

  • Open Access

    ARTICLE

    Mechanical Performance and Deformation Mechanisms of Additively Manufactured Lattice Structures under Quasi-Static Compression and Finite Element Analysis

    Izzat bin Mat Samudin1, Muhammad Adam Johan bin Muhammad Affindy1, Quanjin Ma2, Nabilah Afiqah binti Mohd Radzuan1,*

    Journal of Polymer Materials, Vol.43, No.2, 2026, DOI:10.32604/jpm.2026.077219 - 30 June 2026

    Abstract Lattice structures fabricated through additive manufacturing (AM) offer exceptional strength-to-weight ratios, as their geometries allow them to carry high loads with far less material than solid components. When paired with polylactic acid (PLA), they combine biodegradability with ease of processing, allowing the structures to be produced efficiently while also offering an environmentally friendly material option. However, comparative studies across different lattice types under uniform conditions remain limited, as many existing studies only focus on a single geometry type. Therefore, this study investigates the compressive performance of PLA lattice structures, which include body-centered cubic (BCC), honeycomb… More > Graphic Abstract

    Mechanical Performance and Deformation Mechanisms of Additively Manufactured Lattice Structures under Quasi-Static Compression and Finite Element Analysis

  • Open Access

    ARTICLE

    Effects of Graphene Defects on Evolution of Dislocations and Pores in Graphene/Al Composites: A Molecular Dynamics Study

    Junzhe Zhao1,2, Wencan Zhu1,3, Qiang Wang1, Hui Chen2, Yan Liu2, Kaihong Zheng3, Zhibo Zhang2,3,*

    CMC-Computers, Materials & Continua, Vol.88, No.2, 2026, DOI:10.32604/cmc.2026.078880 - 15 June 2026

    Abstract Vacancy defects in graphene are inevitably introduced during the fabrication of graphene-reinforced metal matrix composites through mechanical processing, chemical reactions, or in-service environmental exposure. Despite their prevalence, the precise atomic-scale impact of these vacancies on dislocation motion, strengthening mechanisms, and failure behavior remains incompletely understood. To address this gap, we employ molecular dynamics simulations to construct aluminum-graphene interface models featuring systematically varied vacancy defect concentrations, enabling a detailed investigation of dislocation–interface interactions and the underlying reinforcement and failure mechanisms under shear deformation. Compared to pristine graphene, interfaces containing vacancy defects exhibit significantly enhanced out-of-plane buckling… More >

  • Open Access

    ARTICLE

    Nonlinear Dynamic Large Deformation Analysis of Hyperelastic Beams Based on the Gent Constitutive Model

    Nasser Firouzi*

    CMES-Computer Modeling in Engineering & Sciences, Vol.147, No.2, 2026, DOI:10.32604/cmes.2026.075681 - 27 May 2026

    Abstract This study investigates finite transient deformations in hyperelastic beam structures based on the Gent material model. To enable its application within beam formulations, the Gent model is expressed in a linearized form. A five-parameter beam element, incorporating two displacement variables, two difference parameters, and one thickness parameter, is adopted. The nonlinear dynamic response is solved using the implicit Newmark method, allowing efficient analysis of beams subjected to complex loading and boundary conditions. The results show that the proposed approach accurately captures the response of geometrically nonlinear beams and reproduces the behavior of neo-Hookean hyperelastic beams More >

  • Open Access

    ARTICLE

    Online Monitoring Method for Transformer Winding Deformation Based on Three-Dimensional Lissajous Curves

    Xinyu Yue1, Zhenhua Li1,2,*, Zhenxing Li1, Tao Zhang1, Yanchun Xu1, Xiaozhen Zhao3

    Energy Engineering, Vol.123, No.6, 2026, DOI:10.32604/ee.2026.077395 - 27 May 2026

    Abstract Winding deformation is a predominant cause of transformer failures and critically compromises the safe, reliable, and economic operation of power systems. To overcome the inadequacy of the conventional three-dimensional (3D) Lissajous curve method in discriminating among various types of winding faults, this paper proposes an online monitoring method for transformer winding deformation based on 3D Lissajous curves. In the proposed method, the primary current di1(t)/dt, the derivative of the primary current di1(t)/dt, and the voltage difference between the primary and secondary sides Δu(t) are adopted as the coordinate axes to construct 3D Lissajous… More >

  • Open Access

    ARTICLE

    Numerical Research on Multi-Directinal Deformation Control of Shield Tunnels under Surface Surcharge

    Pengfei Zhao1,*, Youlin Ye2

    Structural Durability & Health Monitoring, Vol.20, No.3, 2026, DOI:10.32604/sdhm.2026.072074 - 18 May 2026

    Abstract Under soft soil geological conditions, tunnel engineering disturbances can induce changes in ground surface surcharges and lead to stress redistribution in the surrounding soils. As relatively unfavorable loads during engineering disturbances, ground surface surcharges significantly influence both transverse and longitudinal deformations of shield tunnel structures, resulting in increased ellipticity, segment dislocations, joint openings, and tunnel settlement. This study investigates the effect of two different steel plate reinforcement methods—annular steel plates and cross-joint steel plates—on tunnel structures under surface surcharge loading. Using the Mohr–Coulomb elastoplastic constitutive model, the influence of surface surcharges on shield tunnel segment… More >

  • Open Access

    ARTICLE

    A Numerical Framework for Flexible–Electrical Coupled Analysis of Piezoelectric Structures with Large Deformations

    Xuan Sun1,2, Yueying Zhu3, Jiaxi Jin1, Zhitong Li1,*, Leizhi Wang4, Zhaobo Chen1,*

    CMES-Computer Modeling in Engineering & Sciences, Vol.147, No.1, 2026, DOI:10.32604/cmes.2026.078891 - 27 April 2026

    Abstract Piezoelectric smart materials have been widely used in applications such as soft robotic actuation, vibration control and sensing of aerospace structures. In such contexts, the smart structures are typically subjected to significant large deformations and strong electromechanical coupling effects, which pose considerable challenges for conventional analytical approaches and classical finite element models in accurately predicting their nonlinear dynamic responses and capturing multiphysics coupling behaviors. To address these challenges in modeling and analysis, this work develops a flexible–electrical coupled computational framework with a unified mesh description based on the absolute nodal coordinate formulation (ANCF). This coupling… More >

  • Open Access

    ARTICLE

    Effect of Intermediate Layer Processed by High-Pressure Torsion on Microstructure Evolution and Nano-Deformation Behavior of Tungsten-Copper Three-Layer Composites

    Xue Wang1,2, Cen Yang1, Yonghang Wang1, Mingming Wang1,3, Ying Chen4, Ping Li1,*

    CMC-Computers, Materials & Continua, Vol.87, No.3, 2026, DOI:10.32604/cmc.2026.077868 - 09 April 2026

    Abstract Tungsten-copper laminated composites are promising materials for high heat-flux applications, but their performance is often limited by interfacial instability caused by the thermal-mechanical mismatch between tungsten and copper. In this study, W/W-30Cu/CuCrZr three-layer composites are fabricated by high-pressure torsion (HPT) processing. Experimental characterization and molecular dynamics (MD) simulations are used to systematically investigate the influence of HPT process parameters and intermediate-layer composition on the evolution of microstructure and mechanical properties. HPT processing significantly refines the grains of the W-xCu composites and enhances their homogeneity. After applying 15 revolutions of HPT on W-30Cu composites, the crystallite… More >

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