Evaluation of transverse crack initiation in cross-ply CFRP laminates under high-cycle fatigue loading

Keigo Takamura, Atsushi Hosoi, Narumichi Sato, Hiroyuki Kawada

    研究成果: Conference contribution

    抄録

    This study focused on the initiation of a transverse crack in cross-ply CFRP laminates under fatigue loading. Transverse cracks induce more serious damages, such as delamination or fiber breakage. It is essential to understand the mechanism of the transverse crack onset under fatigue loading for improving long-term durability and reliability of CFRP laminates. Therefore, a method to evaluate and predict the initiation of a transverse crack in cross-ply CFRP laminates under fatigue loading was proposed. Fatigue tests at various stress levels were performed to evaluate the initiation and multiplication of the transverse cracks. Fatigue tests were interrupted at arbitrary loading cycles to observe damage in cross-ply CFRP laminates. The transverse cracks caused in the laminates were observed by an optical microscope and soft X-ray photography. The fatigue limit of transverse crack initiation in this fatigue conditions was indicated by calculating the stress applied in 90° layer of the laminates at the saturated state of the transverse cracks with a variational approach. Moreover, the analytical method on the basis of Paris law in order to predict the number of cycles to transverse crack initiation under fatigue loading was proposed. As the results, the predicted number of cycles to transverse crack initiation shows good agreement with experimental results.

    元の言語English
    ホスト出版物のタイトル7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010
    出版者ACCM-7 Organizing Committee
    ページ273-276
    ページ数4
    1
    ISBN(印刷物)9781632660756
    出版物ステータスPublished - 2010
    イベント7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010 - Taipei
    継続期間: 2010 11 152010 11 18

    Other

    Other7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010
    Taipei
    期間10/11/1510/11/18

    Fingerprint

    Carbon fiber reinforced plastics
    Crack initiation
    Laminates
    Fatigue of materials
    Cracks
    carbon fiber reinforced plastic
    Radiography
    Delamination
    Durability
    Microscopes
    Fibers

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials

    これを引用

    Takamura, K., Hosoi, A., Sato, N., & Kawada, H. (2010). Evaluation of transverse crack initiation in cross-ply CFRP laminates under high-cycle fatigue loading. : 7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010 (巻 1, pp. 273-276). ACCM-7 Organizing Committee.

    Evaluation of transverse crack initiation in cross-ply CFRP laminates under high-cycle fatigue loading. / Takamura, Keigo; Hosoi, Atsushi; Sato, Narumichi; Kawada, Hiroyuki.

    7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010. 巻 1 ACCM-7 Organizing Committee, 2010. p. 273-276.

    研究成果: Conference contribution

    Takamura, K, Hosoi, A, Sato, N & Kawada, H 2010, Evaluation of transverse crack initiation in cross-ply CFRP laminates under high-cycle fatigue loading. : 7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010. 巻. 1, ACCM-7 Organizing Committee, pp. 273-276, 7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010, Taipei, 10/11/15.
    Takamura K, Hosoi A, Sato N, Kawada H. Evaluation of transverse crack initiation in cross-ply CFRP laminates under high-cycle fatigue loading. : 7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010. 巻 1. ACCM-7 Organizing Committee. 2010. p. 273-276
    Takamura, Keigo ; Hosoi, Atsushi ; Sato, Narumichi ; Kawada, Hiroyuki. / Evaluation of transverse crack initiation in cross-ply CFRP laminates under high-cycle fatigue loading. 7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010. 巻 1 ACCM-7 Organizing Committee, 2010. pp. 273-276
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