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Electron irradiation effects on interlaminar shear strength of glass or carbon cloth reinforced epoxy composites

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Abstract

Interlaminar tensile shear tests are conducted to study the degradation mechanisms of electron irradiated glass or carbon cloth reinforced epoxy laminates. Interlaminar shear strength decreases significantly after the dose exceeds 3000 Mrad for glass/epoxy, but remains constant up to 12 000 Mrad for carbon/epoxy. SEM photos reveal that debonding of glass fibres and epoxy matrix (or degradation of silane coupling agents) plays an important role in the dose-dependent strength reduction of glass/epoxy laminates. The decrease in the interlaminar shear strength corresponds to that in the three-point bending strength. On the other hand, the SEM fracture appearance is almost dose-independent for carbon/epoxy laminates. In addition, some preliminary irradiation tests are conducted at −120° C to observe the effects of irradiation temperatures.

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Author notes

  1. N. Takeda

    Present address: Research Institute for Applied Mechanics, Kyushu University, Kasuga-shi, 816, Fukuoka, Japan

Authors and Affiliations

  1. Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute, Takasaki-shi, 370-12, Gunma, Japan

    N. Takeda, S. Kawanishi, A. Udagawa & M. Hagiwara

Authors
  1. N. Takeda
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  2. S. Kawanishi
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  3. A. Udagawa
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  4. M. Hagiwara
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Takeda, N., Kawanishi, S., Udagawa, A. et al. Electron irradiation effects on interlaminar shear strength of glass or carbon cloth reinforced epoxy composites. J Mater Sci 20, 3003–3010 (1985). https://doi.org/10.1007/BF00553066

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  • DOI: https://doi.org/10.1007/BF00553066

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