Hongfei Ye^1,*, Dong Li^1,2, 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 >

Xiaoyu Gu¹, Linbi Chen², Seithati Mapesela³, Zheng Wang^1,*, 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 >

Qi Feng¹, Zhengyue Ren², Dan Wang^3,*

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 (E_d) 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 E_d, 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 E_d is explored to detect the frost-resistance property of large-volume hydraulic concretes on site. Results… More >

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 >

XINYAN CHEN^1,2, HAIXIA ZHANG^1,2, LIN LI^1,2,*

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 >

Yujie Huang¹, Hao Zhu², Dauletbek Assima⁴, Zheng Wang^1,*, 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 >

Qian Wang^1,#,*, Zhaozhao Liu^1,2,#,*, 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 >

Alireza Mohammadkarim¹, Manijhe Mokhtari-Dizaji^2,*, 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 >

Jintao He, Dong Lei^*, Xuwei Cui, Pengxiang Bai, Feipeng Zhu

The International Conference on Computational & Experimental Engineering and Sciences, Vol.21, No.4, pp. 78-78, 2019, DOI:10.32604/icces.2019.05228

Abstract With the combination of scanning electron microscope (SEM) and digital image correlation (DIC), the mechanical properties of interfacial transition zone (ITZ) in concrete are experimentally studied. The experimental compression tests are performed on cuboid samples whose half part is aggregate and the other part is mortar. The morphology of the ITZ is captured by SEM under compressive load, and from the recorded images the deformation of the ITZ is analyzed. After that, the distribution of the nominal compressive elastic modulus of the ITZ is obtained along the distance from the aggregate to the mortar, which… More >

LINGFENG CHEN^1,2,3, ZHIPENG GAO^1,2,3, BAIMEI LIU^1,2,3, YING LV^1,2,3, MEIWEN AN^1,2,3,*, JILING FENG^4,*

BIOCELL, Vol.42, No.1, pp. 25-34, 2018, DOI:10.32604/biocell.2018.06114

Abstract Arterial characterization of healthy descending thoracic aorta (DTA) is indispensable in determining stress distributions across wall thickness and different regions that may be responsible for aorta inhomogeneous dilation, rupture, and dissection when aneurysm occurs. Few studies have shown the inhomogeneity of DTA along the aorta tree considering changes in circumferential direction. The present study aims to clarify the circumferential regional characterization of DTA. Porcine DTA tissues were tested according to region and orientation using uniaxial tension. For axial test, results show that the difference in circumferential direction was mainly in collagen fiber modulus, where the… More >