Damage mechanics characterization of high-cycle fatigue in quasi-isotropic CFRP laminates

Atsushi Hosoi, Hirokazu Karasawa, Hiroyuki Kawada

    研究成果: Conference contribution

    抄録

    This paper describes the high-cycle fatigue characteristics of quasi-isotropic CFRP laminates [-45/0/45/90] s up to 10 8 cycles. To investigate the fatigue behavior in the high-life region, the fatigue tests were conducted with the frequency of 100Hz since it's difficult to conduct the tests with 5Hz. Then, the damage behavior of the specimen was observed with a microscope, a soft X-ray photography and a 3D ultrasonic inspection system. In this study, to evaluate quantitative characteristics of each the transverse crack propagation and the delamination growth in the high-cycle region, the energy release rate associated with damage growth to the width direction was calculate. The transverse crack propagation and the delamination growth to the width direction were evaluated based on a modified Paris-law approach. As the results, it was found that transverse crack propagation didn't depend on the frequency within the small temperature change and it was observed that delamination growth delayed with the test condition of less than σ maxb=0.3 of the applied stress level.

    元の言語English
    ホスト出版物のタイトルProceedings of the 2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics
    ページ1729-1736
    ページ数8
    出版物ステータスPublished - 2005
    イベント2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics - Portland, OR
    継続期間: 2005 6 72005 6 9

    Other

    Other2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics
    Portland, OR
    期間05/6/705/6/9

    Fingerprint

    Carbon fiber reinforced plastics
    Laminates
    Mechanics
    Delamination
    Fatigue of materials
    Crack propagation
    Energy release rate
    Radiography
    Microscopes
    Inspection
    Ultrasonics
    Temperature

    Keywords

      ASJC Scopus subject areas

      • Engineering(all)

      これを引用

      Hosoi, A., Karasawa, H., & Kawada, H. (2005). Damage mechanics characterization of high-cycle fatigue in quasi-isotropic CFRP laminates. : Proceedings of the 2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics (pp. 1729-1736)

      Damage mechanics characterization of high-cycle fatigue in quasi-isotropic CFRP laminates. / Hosoi, Atsushi; Karasawa, Hirokazu; Kawada, Hiroyuki.

      Proceedings of the 2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics. 2005. p. 1729-1736.

      研究成果: Conference contribution

      Hosoi, A, Karasawa, H & Kawada, H 2005, Damage mechanics characterization of high-cycle fatigue in quasi-isotropic CFRP laminates. : Proceedings of the 2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics. pp. 1729-1736, 2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics, Portland, OR, 05/6/7.
      Hosoi A, Karasawa H, Kawada H. Damage mechanics characterization of high-cycle fatigue in quasi-isotropic CFRP laminates. : Proceedings of the 2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics. 2005. p. 1729-1736
      Hosoi, Atsushi ; Karasawa, Hirokazu ; Kawada, Hiroyuki. / Damage mechanics characterization of high-cycle fatigue in quasi-isotropic CFRP laminates. Proceedings of the 2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics. 2005. pp. 1729-1736
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      abstract = "This paper describes the high-cycle fatigue characteristics of quasi-isotropic CFRP laminates [-45/0/45/90] s up to 10 8 cycles. To investigate the fatigue behavior in the high-life region, the fatigue tests were conducted with the frequency of 100Hz since it's difficult to conduct the tests with 5Hz. Then, the damage behavior of the specimen was observed with a microscope, a soft X-ray photography and a 3D ultrasonic inspection system. In this study, to evaluate quantitative characteristics of each the transverse crack propagation and the delamination growth in the high-cycle region, the energy release rate associated with damage growth to the width direction was calculate. The transverse crack propagation and the delamination growth to the width direction were evaluated based on a modified Paris-law approach. As the results, it was found that transverse crack propagation didn't depend on the frequency within the small temperature change and it was observed that delamination growth delayed with the test condition of less than σ max/σ b=0.3 of the applied stress level.",
      keywords = "CFRP laminates, Crack propagation, Delamination growth, Energy release rate, High-cycle fatigue",
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      AU - Karasawa, Hirokazu

      AU - Kawada, Hiroyuki

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      Y1 - 2005

      N2 - This paper describes the high-cycle fatigue characteristics of quasi-isotropic CFRP laminates [-45/0/45/90] s up to 10 8 cycles. To investigate the fatigue behavior in the high-life region, the fatigue tests were conducted with the frequency of 100Hz since it's difficult to conduct the tests with 5Hz. Then, the damage behavior of the specimen was observed with a microscope, a soft X-ray photography and a 3D ultrasonic inspection system. In this study, to evaluate quantitative characteristics of each the transverse crack propagation and the delamination growth in the high-cycle region, the energy release rate associated with damage growth to the width direction was calculate. The transverse crack propagation and the delamination growth to the width direction were evaluated based on a modified Paris-law approach. As the results, it was found that transverse crack propagation didn't depend on the frequency within the small temperature change and it was observed that delamination growth delayed with the test condition of less than σ max/σ b=0.3 of the applied stress level.

      AB - This paper describes the high-cycle fatigue characteristics of quasi-isotropic CFRP laminates [-45/0/45/90] s up to 10 8 cycles. To investigate the fatigue behavior in the high-life region, the fatigue tests were conducted with the frequency of 100Hz since it's difficult to conduct the tests with 5Hz. Then, the damage behavior of the specimen was observed with a microscope, a soft X-ray photography and a 3D ultrasonic inspection system. In this study, to evaluate quantitative characteristics of each the transverse crack propagation and the delamination growth in the high-cycle region, the energy release rate associated with damage growth to the width direction was calculate. The transverse crack propagation and the delamination growth to the width direction were evaluated based on a modified Paris-law approach. As the results, it was found that transverse crack propagation didn't depend on the frequency within the small temperature change and it was observed that delamination growth delayed with the test condition of less than σ max/σ b=0.3 of the applied stress level.

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      KW - Energy release rate

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