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The Moisture Diffusion Equation for Moisture Absorption of Multiphase Symmetrical Sandwich Structures

Author

Listed:
  • Hang Yu

    (School of Transportation and Civil Engineering, Nantong University, Nantong 226019, China)

  • Lu Yao

    (School of Transportation and Civil Engineering, Nantong University, Nantong 226019, China)

  • Yan Ma

    (School of Textile and Clothing, Nantong University, Nantong 226019, China)

  • Zhaoyuan Hou

    (School of Transportation and Civil Engineering, Nantong University, Nantong 226019, China)

  • Jiahui Tang

    (School of Transportation and Civil Engineering, Nantong University, Nantong 226019, China)

  • Yuming Wang

    (School of Transportation and Civil Engineering, Nantong University, Nantong 226019, China)

  • Yang Ni

    (Shanghai Electro-Mechanical Engineering Institute, Shanghai 201109, China)

Abstract

When hydrophilic materials (such as natural fiber, epoxy resin or concrete) compose sandwich structures, the moisture absorption from hydrothermal environments may significantly affect their mechanical properties. Although some experimental works were carried out, few mathematical efforts have been made to describe the moisture diffusion of multiphase symmetrical sandwich structures thus far. In this paper, the moisture diffusion equation was developed to effectively predict the moisture diffusion behavior of multiphase symmetrical sandwich structures as the function of aging time. Both finite element analysis (FEA) and experimental works were carried out to validate the accuracy of the analytical method, and the analytical results show a good agreement with FEA and experimental data. The effect of the interface condition on the concentration at the interfaces was discussed; the difference between concentration and normalized concentration was illustrated; the correct interface condition, which is a continuous normalized concentration condition, was explained for the moisture diffusion behavior of sandwich structures.

Suggested Citation

  • Hang Yu & Lu Yao & Yan Ma & Zhaoyuan Hou & Jiahui Tang & Yuming Wang & Yang Ni, 2022. "The Moisture Diffusion Equation for Moisture Absorption of Multiphase Symmetrical Sandwich Structures," Mathematics, MDPI, vol. 10(15), pages 1-15, July.
    • Handle: RePEc:gam:jmathe:v:10:y:2022:i:15:p:2669-:d:874795
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    References listed on IDEAS

    as
    1. Junhua Zhang & Zhaochen Yan & Lili Xia, 2021. "Vibration and Flutter of a Honeycomb Sandwich Plate with Zero Poisson’s Ratio," Mathematics, MDPI, vol. 9(19), pages 1-16, October.
    2. Swarda S. Radkar & Ali Amiri & Chad A. Ulven, 2019. "Tensile Behavior and Diffusion of Moisture through Flax Fibers by Desorption Method," Sustainability, MDPI, vol. 11(13), pages 1-10, June.
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    Cited by:

    1. Hang Yu & Chenhui Zhu & Lu Yao & Yan Ma & Yang Ni & Shenkai Li & Huan Li & Yang Liu & Yuming Wang, 2023. "The Two Stage Moisture Diffusion Model for Non-Fickian Behaviors of 3D Woven Composite Exposed Based on Time Fractional Diffusion Equation," Mathematics, MDPI, vol. 11(5), pages 1-12, February.

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