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Accelerated Testing for Long-term Durability of FRP Laminates for Marine UseMaterials System Research Laboratory, Kanazawa Institute of Technology, 3-1 Yatsukaho, Matto, Ishikawa 924-0838, Japanmiyano{at}neptune.kanazawa-it.ac.jp
Materials System Research Laboratory, Kanazawa Institute of Technology, 3-1 Yatsukaho, Matto, Ishikawa 924-0838, Japan
Graduate School, Kanazawa Institute of Technology, 7-1 Ohgigaoka, Nonoichi, Ishikawa 921-8501, Japan The accelerated testing methodology has been proposed for the long-term durability of polymer composites based on the time–temperature superposition principle to be held for the viscoelasticity of polymer matrix. In this paper, the long-term flexural fatigue life of plain woven carbon fiber–vinylester (CFRP) laminates for advanced marine use was predicted based on the proposed methodology, compared with that of plain woven glass fiber–vinylester (GFRP) laminates for conventional marine use. The applicability of the accelerated testing methodology for these laminates and the advantages of this CFRP laminates are discussed. As results, the flexural fatigue strength of CFRP laminates as well as that of GFRP laminates clearly depends on time and temperature. The time–temperature super-position principle for the viscoelasticity of matrix vinylester resin holds for these flexural fatigue strengths, and then the master curves can be obtained. It is clear from these master curves that while the flexural fatigue strength for GFRP laminates decreases strongly with increasing number of cycles to failure N f and that for CFRP laminates decreases scarcely with increasing N f.
Key Words: life prediction • fatigue • time–temperature dependence • viscoelasticity
Journal of Composite Materials, Vol. 39, No. 1,
5-20 (2005) This article has been cited by other articles:
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