An effect of physical aging progression on viscoelastic property in carbon/epoxy composites

Yukie Okudoi, Yoshihiko Arao, Jun Koyanagi, Shin Ichi Takeda, Hiroyuki Kawada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This study aims to quantify the effect of physical aging progression on viscoelastic property in carbon/epoxy composites. Understanding viscoelastic behavior of carbon fiber reinforced plastics (CFRPs) has become an essential issue for further application of CFRPs to aerospace structures, which require high dimensional accuracy. In this research, the viscoelastic property was evaluated by quasi-static tensile tests in transverse direction for unidirectional laminates. The progression time of physical aging versus viscoelastic parameters was obtained. It was found that the viscoelastic behavior becomes less significant as the physical aging progresses. Considering the quantitative result, creep compliance function, which is conventionally difficult to predict due to the unknown physical aging effect, was predicted as functions of creep time and preceding aging time. This prediction was verified by actually performing a long-term creep test in transverse direction for unidirectional composites. Creep test result and the calculated results using viscoelastic parameters obtained from quasi-static tensile tests showed similar results up to the aging time given to the specimen before the test, but they showed different trends along with time progression. By taking into account the progression of physical aging, the calculated lines are likely to show better correspondence with the creep curves.

Original languageEnglish
Title of host publication7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010
PublisherACCM-7 Organizing Committee
Pages194-197
Number of pages4
ISBN (Print)9781632660756
Publication statusPublished - 2010 Jan 1
Event7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010 - Taipei, Taiwan, Province of China
Duration: 2010 Nov 152010 Nov 18

Publication series

Name7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010
Volume1

Conference

Conference7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010
CountryTaiwan, Province of China
CityTaipei
Period10/11/1510/11/18

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Keywords

  • CFRP
  • Creep test
  • Physical aging
  • Viscoelastic

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Okudoi, Y., Arao, Y., Koyanagi, J., Takeda, S. I., & Kawada, H. (2010). An effect of physical aging progression on viscoelastic property in carbon/epoxy composites. In 7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010 (pp. 194-197). (7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010; Vol. 1). ACCM-7 Organizing Committee.