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  • Open Access

    ARTICLE

    Research on Deformation Mechanism of Rolled AZ31B Magnesium Alloy during Tension by VPSC Model Computational Simulation

    Xun Chen1, Jinbao Lin1,2,*, Zai Wang1

    CMC-Computers, Materials & Continua, Vol.86, No.3, 2026, DOI:10.32604/cmc.2025.072495 - 12 January 2026

    Abstract This work investigates the effects of deformation mechanisms on the mechanical properties and anisotropy of rolled AZ31B magnesium alloy under uniaxial tension, combining experimental characterization with Visco-Plastic Self Consistent (VPSC) modeling. The research focuses particularly on anisotropic mechanical responses along transverse direction (TD) and rolling direction (RD). Experimental measurements and computational simulations consistently demonstrate that prismatic <a> slip activation significantly reduces the strain hardening rate during the initial stage of tensile deformation. By suppressing the activation of specific deformation mechanisms along RD and TD, the tensile mechanical behavior of the magnesium alloy was further investigated. More >

  • Open Access

    ARTICLE

    A Temperature-Indexed Concrete Damage Plasticity Model Incorporating Bond-Slip Mechanism for Thermo-Mechanical Analysis of Reinforced Concrete Structures

    Wu Feng1,2,*, Tengku Anita Raja Hussin1, Xu Yang3

    Structural Durability & Health Monitoring, Vol.20, No.1, 2026, DOI:10.32604/sdhm.2025.071664 - 08 January 2026

    Abstract This study investigates the thermo–mechanical behavior of C40 concrete and reinforced concrete subjected to elevated temperatures up to 700°C by integrating experimental testing and advanced numerical modeling. A temperature-indexed Concrete Damage Plasticity (CDP) framework incorporating bond–slip effects was developed in Abaqus to capture both global stress–strain responses and localized damage evolution. Uniaxial compression tests on thermally exposed cylinders provided residual strength data and failure observations for model calibration and validation. Results demonstrated a distinct two-stage degradation regime: moderate stiffness and strength reduction up to ~400°C, followed by sharp deterioration beyond 500°C–600°C, with residual capacity at… More >

  • Open Access

    ARTICLE

    Revisiting Nonlinear Modelling Approaches for Existing RC Structures: Lumped vs. Distributed Plasticity

    Hüseyin Bilgin*, Bredli Plaku

    Structural Durability & Health Monitoring, Vol.20, No.1, 2026, DOI:10.32604/sdhm.2025.071007 - 08 January 2026

    Abstract Nonlinear static procedures are widely adopted in structural engineering practice for seismic performance assessment due to their simplicity and computational efficiency. However, their reliability depends heavily on how the nonlinear behaviour of structural components is represented. The recent earthquakes in Albania (2019) and Türkiye (2023) have underscored the need for accurate assessment techniques, particularly for older reinforced concrete buildings with poor detailing. This study quantifies the discrepancies between default and user-defined component modelling in pushover analysis of pre-modern reinforced concrete structures, analysing two representative low- and mid-rise reinforced concrete frame buildings. The lumped plasticity approach… More > Graphic Abstract

    Revisiting Nonlinear Modelling Approaches for Existing RC Structures: Lumped vs. Distributed Plasticity

  • Open Access

    REVIEW

    Recent Efforts on the Compressive and Tensile Strength Behavior of Thermoplastic-Based Recycled Aggregate Concrete toward Sustainability in Construction Materials

    Mahmoud Alhashash1, Abdullah Alariyan2, Ameen Mokhles Youns3, Favzi Ghreivati4, Ahed Habib5,*, Maan Habib6

    Structural Durability & Health Monitoring, Vol.20, No.1, 2026, DOI:10.32604/sdhm.2025.070194 - 08 January 2026

    Abstract Concrete production often relies on natural aggregates, which can lead to resource depletion and environmental harm. In addition, improper disposal of thermoplastic waste exacerbates ecological problems. Although significant attention has recently been given to recycling various waste materials into concrete, studies specifically addressing thermoplastic recycled aggregates are still trending. This underscores the need to comprehensively review existing literature, identify research trends, and recognize gaps in understanding the mechanical performance of thermoplastic-based recycled aggregate concrete. Accordingly, this review summarizes recent investigations focused on the mechanical properties of thermoplastic-based recycled aggregate concrete, emphasizing aspects such as compressive… More >

  • Open Access

    ARTICLE

    Influence of Honey on Structural, Morphology and Thermal Behavior of Zein-Based Polymer Systems

    Nurrul Asyiqin K. Shamsuri1, Shujahadeen B. Aziz2, Siti Nadiah Halim3, Hashlina Rusdi4, Mohd Fakhrul Zamani Kadir1,5,*

    Journal of Polymer Materials, Vol.42, No.4, pp. 1111-1123, 2025, DOI:10.32604/jpm.2025.070939 - 26 December 2025

    Abstract This study investigates the effects of honey concentration on the crystallinity, morphology, and thermal behavior of zein-based polymer systems, aiming to assess honey’s role as a natural plasticizer. Fourier transform infrared spectroscopy (FTIR) analysis confirmed the presence of strong intermolecular interactions and hydrogen bonding between zein and honey, indicating good miscibility. X-ray diffraction (XRD) patterns revealed a significant reduction in crystallinity with increasing honey concentration up to 25 wt.%, with the ZH5 (75 wt.% zein-25 wt.% honey) sample exhibiting the smallest crystallite size (4.23 nm), suggesting enhanced amorphous character suitable for ionic mobility. Field emission… More >

  • Open Access

    ARTICLE

    Behavior of Sandwich Glued Laminated Bamboo Structures with a Core Formed by Bioplastic Fiber Using 3D Printing Technology

    Nattawat Mahasuwanchai, Thippakorn Udtaranakron, Kasan Chanto, Tawich Pulngern*

    Journal of Renewable Materials, Vol.13, No.12, pp. 2453-2478, 2025, DOI:10.32604/jrm.2025.02025-0137 - 23 December 2025

    Abstract This research investigates the behavior of sandwich glued laminated bamboo (Glubam) structures with a core formed by biodegradable plastic fibers, specifically polylactic acid (PLA), fabricated using 3D printing technology. The influence of various fiber printing orientations (0° and 45/135°) on tensile and compressive properties was investigated. The experimental results indicated that polylactic acid with calcium carbonate (PLA+) printed unidirectionally and aligned with the loading direction (0°) exhibits superior tensile and compressive strengths compared to specimens printed bidirectionally at 45/135°. Furthermore, the effect of additives on bioplastics of carbon fiber (PLA-CF) and glass fiber (PLA-GF) additives… More > Graphic Abstract

    Behavior of Sandwich Glued Laminated Bamboo Structures with a Core Formed by Bioplastic Fiber Using 3D Printing Technology

  • Open Access

    ARTICLE

    Characteristics of Food Packaging Bioplastics with Nanocrystalline Cellulose (NCC) from Oil Palm Empty Fruit Bunches (OPEFB) as Reinforcement

    Maryam1,*, Rahayu Puji2, Luthfi Muhammad Zulfikar2, Ikhsandy Ferry2, Nadiyah Khairun1, Hidayat3, Ilyas Rushdan Ahmad4, Syafri Edi5

    Journal of Renewable Materials, Vol.13, No.12, pp. 2431-2451, 2025, DOI:10.32604/jrm.2025.02024-0063 - 23 December 2025

    Abstract The development of the bioplastics industry addresses critical issues such as environmental pollution and food safety concerns. However, the industrialization of bioplastics remains underdeveloped due to challenges such as high production costs and suboptimal material characteristics. To enhance these characteristics, this study investigates bioplastics reinforced with Nanocrystalline Cellulose (NCC) derived from Oil Palm Empty Fruit Bunches (OPEFB), incorporating dispersing agents. The research employs a Central Composite Design from the Response Surface Methodology (RSM) with two factors: the type of dispersing agent (KCl and NaCl) and the NCC concentration from OPEFB (1%–5%), along with the dispersing… More >

  • Open Access

    ARTICLE

    Stress Intensity Factor, Plastic Limit Pressure and Service Life Assessment of a Transportation-Damaged Pipe with a High-Aspect-Ratio Axial Surface Crack

    Božo Damjanović*, Pejo Konjatić, Marko Katinić

    CMES-Computer Modeling in Engineering & Sciences, Vol.145, No.2, pp. 1735-1753, 2025, DOI:10.32604/cmes.2025.072256 - 26 November 2025

    Abstract Ensuring the structural integrity of piping systems is crucial in industrial operations to prevent catastrophic failures and minimize shutdown time. This study investigates a transportation-damaged pipe exposed to high-temperature conditions and cyclic loading, representing a realistic challenge in plant operation. The objective was to evaluate the service life and integrity assessment parameters of the damaged pipe, subjected to 22,000 operational cycles under two daily charge and discharge conditions. The flaw size in the damaged pipe was determined based on a failure assessment procedure, ensuring a conservative and reliable input. The damage was characterized as a… More >

  • Open Access

    ARTICLE

    Manufacturing a Biodegradable Container for Planting Plants Based on an Innovative Wood-Polymer Composite

    Ksenia Anikeeva*, Ruslan Safin

    Journal of Renewable Materials, Vol.13, No.11, pp. 2235-2252, 2025, DOI:10.32604/jrm.2025.02025-0128 - 24 November 2025

    Abstract The use of wood-polymer composites (WPC) based on a polymer matrix and wood filler is a modern, environmentally friendly direction in material science. However, untreated wood filler exhibits poor adhesion to hydrophobic polymers due to its hydrophilic lignocellulose fibers. To address this, ozone treatment is employed to enhance compatibility, reduce water absorption, and regulate biodegradation rates. This study investigates the hypothesis that ozone modification of wood filler improves adhesion to thermoplastic starch, thereby enhancing the physico-mechanical properties and controlled biodegradation of WPCs under compost conditions. A comprehensive analysis was conducted on composites containing untreated and… More >

  • Open Access

    PROCEEDINGS

    Resolving Self-Stress Artifacts in Twin Boundary Migration: A Stress Correction Scheme for the CPFE-PF Model of HCP Alloys

    Linfeng Jiang1,*, Guisen Liu1, Yao Shen1, Jian Wang2

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.33, No.3, pp. 1-1, 2025, DOI:10.32604/icces.2025.011397

    Abstract The plastic deformation of Mg/Ti alloys arises from the synergistic interplay of dislocation slip and deformation twinning. To model these mechanisms, we previously developed a mesoscale CPFE-PF framework that couples crystal plasticity finite element (CPFE) and phase field (PF) methods, enabling predictions of microstructure evolution and mechanical behavior under complex loading. A central challenge, however, lies in accurately capturing deformation twinning—a process critical for accommodating shear and reorienting crystal domains in low-symmetry metals. Twin propagation and thickening occur via twinning dislocations/disconnections at the atomic scale, while at larger scales they are governed by the migration… More >

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