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  • Open Access


    Investigation of Cavitation in NaCl Solutions in a Sonochemical Reactor Using the Foil Test Method

    Michael Kuchinskiy1,2,*, Tatyana Lyubimova1,2, Konstantin Rybkin2, Anastasiia Sadovnikova2, Vasiliy Galishevskiy2

    FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.5, pp. 1093-1102, 2024, DOI:10.32604/fdmp.2024.050059

    Abstract Ultrasonic baths and sonochemical reactors are widely used in industrial applications dealing with surface cleaning and chemical synthesis. The processes of erosion, cleaning and structuring of the surface can be typically controlled by changing relevant influential parameters. In particular, in this work, we experimentally investigate the effect of NaCl concentration (0–5.5 mol/L) on the erosion of an aluminum foil under ultrasonic exposure at a frequency of 28 kHz. Special attention is paid to the determination of cavitation zones and their visualization using heat maps. It is found that at low NaCl concentration (0.3 mol/L), the More > Graphic Abstract

    Investigation of Cavitation in NaCl Solutions in a Sonochemical Reactor Using the Foil Test Method

  • Open Access


    A Review of Experimental Research on the Mode I Fracture Behavior of Bamboo

    Yue Chen1,2, Haitao Li1,2,*, Lei Gao3,*, Wei Xu1,2, Rodolfo Lorenzo4, Milan Gaff5,6

    Journal of Renewable Materials, Vol.11, No.6, pp. 2787-2808, 2023, DOI:10.32604/jrm.2023.027634

    Abstract Bamboo is an eco-friendly material with light weight, high strength, short growth cycle and high sustainability, which is widely used in building structures. Engineered bamboo has further promoted the development of modern bamboo structures due to its unrestricted size and shape. However, as a fiber-reinforced material, fracture damage, especially Mode I fracture damage, becomes the most likely damage mode of its structure, so Mode I fracture characteristics are an important subject in the research of mechanical properties of bamboo. This paper summarizes the current status of experimental research on the Mode I fracture properties of More >

  • Open Access


    Research on Dynamic and Static Test Methods for Evaluating the Poisson’s Ratio of Oriented Strand Board

    Yuhao Zhou, Yuhang He, Zhaoyu Shen, Zheng Wang*

    Journal of Renewable Materials, Vol.10, No.12, pp. 3459-3476, 2022, DOI:10.32604/jrm.2022.021251

    Abstract In this article, dynamic method and static method of testing Poisson’s ratio of OSB (Oriented Strand Board) were proposed. Through modal and static numerical analyses, the position where the transverse stress is equal to zero was determined. The binary linear regression method was applied to express the gluing position of the strain gauge as a relational expression that depended on the length-width ratio and width-thickness ratio of the cantilever plate. Then the longitudinal and transverse Poisson’s ratios of OSB were measured by the given dynamic and static methods. In addition, the test results of OSB More >

  • Open Access


    A Review of Test Methods for the Determination of the Permeability Coefficient of Gravelly Soils Used for Embankment Dams

    Zhenggang Zhan1, Han Chen2,3, Yanyi Zhang2,3, Ruilin Cheng1, Gang Deng2,3,*

    FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.1, pp. 131-144, 2022, DOI:10.32604/fdmp.2022.017536

    Abstract The factors influencing the permeability coefficient of gravelly soils used for the development of embankment dams (core wall) are analyzed. Such factors include (but are not limited to) soil size, anisotropy, density and boundary effects. A review of the literature is conducted and new directions of research are proposed. In such a framework, it is shown that gravelly soil with controlled density and vertical stress should be used to optimize the measurement of the vertical and horizontal permeability coefficients, respectively. More >

  • Open Access


    Mesoscopic-Scale Numerical Investigation Including the Inuence of Process Parameters on LPBF Multi-Layer Multi-Path Formation

    Liu Cao*

    CMES-Computer Modeling in Engineering & Sciences, Vol.126, No.1, pp. 5-23, 2021, DOI:10.32604/cmes.2021.014693

    Abstract As a typical laser additive manufacturing technology, laser powder bed fusion (LPBF) has achieved demonstration applications in aerospace, biomedical and other fields. However, how to select process parameters quickly and reasonably is still the main concern of LPBF production. In order to quantitatively analyze the inuence of different process parameters (laser power, scanning speed, hatch space and layer thickness) on the LPBF process, the multi-layer and multi-path forming process of LPBF was predicted based on the open-source discrete element method framework Yade and the open-source finite volume method framework OpenFOAM. Based on the design of… More >

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