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  • Open Access

    ARTICLE

    Finite Element Analysis of Inclusion Stiffness and Interfacial Debonding on the Elastic Modulus and Strength of Rubberized Mortar

    Cristian Martínez-Fuentes1, Pedro Pesante2,*, Karin Saavedra3, Paul Oumaziz4

    CMC-Computers, Materials & Continua, Vol.85, No.1, pp. 581-595, 2025, DOI:10.32604/cmc.2025.065746 - 29 August 2025

    Abstract Rubberized concrete is one of the most studied applications of discarded tires and offers a promising approach to developing materials with enhanced properties. The rubberized concrete mixture results in a reduced modulus of elasticity and a reduced compressive and tensile strength compared to traditional concrete. This study employs finite element simulations to investigate the elastic properties of rubberized mortar (RuM), considering the influence of inclusion stiffness and interfacial debonding. Different homogenization schemes, including Voigt, Reuss, and mean-field approaches, are implemented using DIGIMAT and ANSYS. Furthermore, the influence of the interfacial transition zone (ITZ) between mortar… More >

  • Open Access

    ARTICLE

    Electronegativity, susceptibility, and radiation shielding features of thulium reinforced barium-cadmium-lithium-borate glasses

    B. M. Alotaibia, Thaqal M. Alhuzaymib, Mohammed F. Alotibyb, Sayed A. Makhloufc, Kh. S. Shaaband, E. A. Abdel Wahabc,*

    Chalcogenide Letters, Vol.21, No.8, pp. 583-604, 2024, DOI:10.15251/CL.2024.218.583

    Abstract The chemical composition of the following glass system 75Li2B4O7-10CdO-(15-x)BaO- xTm2O3 (0 ≤ x ≤ 2) mol.% has been fabricated using a traditional melt quenching procedure. The density of the synthesis samples has been measured and it enhanced with the rising Tm2O3 content. All the fabricated specimens form glass and the amorphous state have been confirmed the XRD. The spectroscopic investigation indicates an increase in the energy gap from 3.08 to 3.25 eV with increasing Tm2O3 concentrations. The refractive index, basicity and static and infinity of dielectric constant were taken place of present investigated. The ultrasonic velocities of More >

  • Open Access

    PROCEEDINGS

    Tension, Shear and Bending Properties of Two-Dimensional Materials

    Hongfei Ye1,*, Dong Li1,2, Hongwu Zhang1, Yonggang Zheng1

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.29, No.3, pp. 1-2, 2024, DOI:10.32604/icces.2024.010938

    Abstract Due to excellent physical performance and potential application in the nanoscale fluid channel, 2D transition-metal dioxides and dichalcogenides with 1H phase are of great interest. Their mechanical property attracts much attention but the accurate evaluation still faces challenges because of the ultrasoft and ultrathin structure. In this work, we establish an analytical atom-based molecular mechanics model to predict the elastic modulus, Poisson’s ratio and shear modulus of the single-layer 2D transition-metal dioxides and dichalcogenides. The proposed method is validated through the calculation of the mechanical property of Molybdenum disulfide (MoS2). The results indicate that the elastic… More >

  • Open Access

    ARTICLE

    Dynamic Testing of Elastic Modulus, Shear Modulus, and Poisson’s Ratio of Bamboo Scrimber

    Xiaoyu Gu1, Linbi Chen2, Seithati Mapesela3, Zheng Wang1,*, Aijin Zhou4

    Journal of Renewable Materials, Vol.11, No.12, pp. 4197-4210, 2023, DOI:10.32604/jrm.2023.028768 - 10 November 2023

    Abstract The bamboo scrimber is an anisotropic material. The elastic constant values of the bamboo scrimber specimens measured by the dynamic and static methods are consistent, and the dynamic test method has the advantages of rapidity, simplicity, good repeatability, and high precision. Bamboo scrimber has strong potential as a building material, and its elastic constant is an important index to measure its mechanical properties. To quickly, simply, non-destructively, and accurately detect the elastic constant of the bamboo scrimber, they were dynamically tested by the free plate transient excitation method and cantilever plate torsional vibration method. The More >

  • Open Access

    ARTICLE

    Detection of Frost-Resistance Property of Large-Size Concrete Based on Impact-Echo Method

    Qi Feng1, Zhengyue Ren2, Dan Wang3,*

    Structural Durability & Health Monitoring, Vol.17, No.1, pp. 71-88, 2023, DOI:10.32604/sdhm.2023.024912 - 02 March 2023

    Abstract The dynamic elasticity modulus (Ed) is the most commonly used indexes for nondestructive testing to represent the internal damage of hydraulic concrete. Samples with a specific size is required when the transverse resonance method was used to detect the Ed, resulting in a limitation for field tests. The impact-echo method can make up defects of traditional detection methods for frost-resistance testing, such as the evaluation via the loss of mass or strength. The feasibility of the impact-echo method to obtain the relative Ed is explored to detect the frost-resistance property of large-volume hydraulic concretes on site. Results… More >

  • Open Access

    ARTICLE

    Simulation of Elastic and Fatigue Properties of Epoxy/SiO2 Particle Composites through Molecular Dynamics

    Gaoge Zhao, Jianzhong Chen, Yong Lv*, Xiaoyu Zhang, Li Huang

    CMES-Computer Modeling in Engineering & Sciences, Vol.128, No.1, pp. 339-357, 2021, DOI:10.32604/cmes.2021.015388 - 28 June 2021

    Abstract The influence of different nanoparticle sizes on the elastic modulus and the fatigue properties of epoxy/SiO2 nanocomposite is studied in this paper. Here, the cross-linked epoxy resins formed by the combination of DGEBA and 1,3-phenylenediamine are used as the matrix phase, and spherical SiO2 particles are used as the reinforcement phase. In order to simulate the elastic modulus and long-term performance of the composite material at room temperature, the simulated temperature is set to 298 K and the mass fraction of SiO2 particles is set to 28.9%. The applied strain rate is 109/s during the simulation of… More >

  • Open Access

    ARTICLE

    Three-month effects of corneal cross-linking on corneal fibroblasts

    XINYAN CHEN1,2, HAIXIA ZHANG1,2, LIN LI1,2,*

    BIOCELL, Vol.45, No.4, pp. 1023-1032, 2021, DOI:10.32604/biocell.2021.014873 - 22 April 2021

    Abstract Corneal collagen crosslinking (CXL) has revolutionized the treatment of keratoconus in the past decade. In order to evaluate the 3-month effects of CXL on corneal fibroblasts, a longitudinal study at the tissue and cellular level was carried out with a total of 16 rabbits that underwent CXL, deepithelialization (DEP), or non-treatment (control) and kept for 1 to 3 months. The duration of corneal stromal remodeling after CXL was determined by examining the differentiation, apoptosis, and number changes of keratocytes in tissue sections from animals 1, 2, or 3 months post-treatment. Upon the finish of tissue… More >

  • Open Access

    ARTICLE

    Test and Analysis of the Sound Insulation Performance of Four Types of Timber Structure Floors under Jumping Excitation

    Yujie Huang1, Hao Zhu2, Dauletbek Assima4, Zheng Wang1,*, Minmin Li3, Xinyue Zhao1

    Journal of Renewable Materials, Vol.9, No.4, pp. 829-840, 2021, DOI:10.32604/jrm.2021.014610 - 01 February 2021

    Abstract To improve the impact sound insulation performance of building floors and meet the objective requirements for living comfort of residents, in this article, three kinds of elastic cushion materials, Portuguese cork board, BGL insulation sound insulation foam board, and EPP polypropylene plastic foam board, are applied to the sound insulation of a light frame wood floor structure of the same bedroom and compared to the ordinary floor. This study uses the transfer function method and transient excitation method to measure the sound insulation, damping ratio, and elastic modulus of materials, as well as the sound… More >

  • Open Access

    ARTICLE

    Dynamic Elastic Modulus and Damping Ratio of Lignin-Modified Loess

    Qian Wang1,#,*, Zhaozhao Liu1,2,#,*, Xiumei Zhong1, Zhongnan Gao1, Fuqiang Liu2

    Journal of Renewable Materials, Vol.9, No.3, pp. 523-540, 2021, DOI:10.32604/jrm.2021.014114 - 14 January 2021

    Abstract To effectively improve the poor engineering properties of loess and enhance its seismic performance, the industrial by-product lignin is used as a modified material. Based on lots of dynamic triaxial tests, the dynamic elastic modulus and damping ratio of lignin-modified loess were tested. The effects of lignin content on the dynamic elastic modulus and damping ratio of lignin-modified loess were analyzed. Combined with scanning electron microscopy (SEM) and X-ray diffraction (XRD), the microscopic mechanism of lignin to improve the dynamic properties of loess was studied. The results show that lignin can effectively modify the dynamic… More >

  • Open Access

    ARTICLE

    The Mechanical Characteristics of Human Endothelial Cells in Response to Single Ionizing Radiation Doses By Using Micropipette Aspiration Technique

    Alireza Mohammadkarim1, Manijhe Mokhtari-Dizaji2,*, Ali Kazemian3, Hazhir Saberi4, Mohammad Mehdi Khani5, Mohsen Bakhshandeh6

    Molecular & Cellular Biomechanics, Vol.16, No.4, pp. 275-287, 2019, DOI:10.32604/mcb.2019.06280

    Abstract The mechanical properties of living cells are known to be promising biomarkers when investigating the health and functions of the human body. Ionizing irradiation results in vascular injury due to endothelial damage. Thus, the current study objective was to evaluate the influence of continuous radiation doses on the mechanical properties of human umbilical vein endothelial cells (HUVECs), and to identify Young’s modulus (E) and viscoelastic behavior. Single-dose (0, 2, 4, 6, and 8 Gy) radiation was applied to HUVECs using a Cobalt-60 treatment machine in the current vitro irradiation study. Thereafter, a micropipette-aspiration technique was… More >

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