Lifetime prediction of woven GFRP laminates under constant tensile loading in hydrothermal environment

Masahiro Kotani, Yusuke Yasufuku, Naoki Inoue, Ken Kurihara, Hiroyuki Kawada

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    This study aims to investigate the effects of a hydrothermal environment on the creep behavior of woven glass fiber reinforced plastics (GFRPs) and to propose a method for predicting their lifetime. Toward this end, experiments were carried out in air and deionized water at 40, 60, 80 and 95 °C. Static tensile tests of woven GFRP were conducted in air and in deionized water to evaluate its mechanical properties and to determine suitable experimental conditions for subsequent constant tensile load tests. The mechanical properties of the woven GFRP decreased with an increase in temperature and with water immersion. Constant tensile load tests were also conducted in air and in deionized water to investigate the creep behavior and fracture time. The fracture time decreased with an increase in stress and water temperature and demonstrated the possibility of a threshold stress for fracturing. In addition, the fracture time during each constant tensile load test was predicted using a modified Reiner-Weissenberg (R-W) criterion, which is a failure criterion for linear viscoelastic materials based on the accumulation of dissolved energy within the GFRP. In this study, the R-W criterion was modified to consider the effects of degradation and its acceleration, which are due to the applied stress and immersion in a solution. The predicted results were in good agreement with the experimental data when considering the effects of hydrothermal aging.

    Original languageEnglish
    Pages (from-to)261-274
    Number of pages14
    JournalMechanics of Time-Dependent Materials
    Volume17
    Issue number2
    DOIs
    Publication statusPublished - 2013 May

    Fingerprint

    Plastic laminates
    Glass fiber reinforced plastics
    Deionized water
    Creep
    Air
    Mechanical properties
    Water
    Loads (forces)
    Aging of materials
    Degradation
    Temperature
    Experiments

    Keywords

    • Constant Tensile Load Test
    • Creep
    • GFRP
    • Hydrothermal Environment
    • Lifetime Prediction

    ASJC Scopus subject areas

    • Materials Science(all)
    • Chemical Engineering(all)
    • Mechanical Engineering
    • Aerospace Engineering

    Cite this

    Lifetime prediction of woven GFRP laminates under constant tensile loading in hydrothermal environment. / Kotani, Masahiro; Yasufuku, Yusuke; Inoue, Naoki; Kurihara, Ken; Kawada, Hiroyuki.

    In: Mechanics of Time-Dependent Materials, Vol. 17, No. 2, 05.2013, p. 261-274.

    Research output: Contribution to journalArticle

    Kotani, Masahiro ; Yasufuku, Yusuke ; Inoue, Naoki ; Kurihara, Ken ; Kawada, Hiroyuki. / Lifetime prediction of woven GFRP laminates under constant tensile loading in hydrothermal environment. In: Mechanics of Time-Dependent Materials. 2013 ; Vol. 17, No. 2. pp. 261-274.
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