Effect of moisture absorption on dimensional stability in carbon/epoxy composites

Yoshihiko Arao; Jun Koyanagi; Hiroshi Hatta; Yuichiro Aoki; Hiroyuki Kawada

Effect of moisture absorption on dimensional stability in carbon/epoxy composites

Yoshihiko Arao, Jun Koyanagi, Hiroshi Hatta, Yuichiro Aoki, Hiroyuki Kawada

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In order to quantify the dimensional stability in CFRPs at humidity environment, the water diffusion considering an anisotropy and moisture expansion behavior are investigated. Water diffusivity coefficients were determined by measuring the specimen weight during the moisture absorption test. The diffusivity coefficients of three main axial directions are obtained from three shapes specimen's result and solving simultaneous equations. A 3-dimensional locator using laser-displacement measurement was employed to measure micro deformation of the CFRP specimens caused by moisture absorption. The curvature of surface was observed due to the distribution of moisture contents. The coupling analysis which includes mechanical deformation and thermal diffusion was conducted. The numerical results are in good agreement with the test results.

Original language	English
Title of host publication	ICCM International Conferences on Composite Materials
Publication status	Published - 2007
Event	16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace" - Kyoto Duration: 2007 Jul 8 → 2007 Jul 13

Other

Other	16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace"
City	Kyoto
Period	07/7/8 → 07/7/13

Keywords

Dimensional stability
Polymer-matrix composites (PMC)
Water diffusion

ASJC Scopus subject areas

Engineering(all)
Ceramics and Composites

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Arao, Y., Koyanagi, J., Hatta, H., Aoki, Y., & Kawada, H. (2007). Effect of moisture absorption on dimensional stability in carbon/epoxy composites. In ICCM International Conferences on Composite Materials

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title = "Effect of moisture absorption on dimensional stability in carbon/epoxy composites",

abstract = "In order to quantify the dimensional stability in CFRPs at humidity environment, the water diffusion considering an anisotropy and moisture expansion behavior are investigated. Water diffusivity coefficients were determined by measuring the specimen weight during the moisture absorption test. The diffusivity coefficients of three main axial directions are obtained from three shapes specimen's result and solving simultaneous equations. A 3-dimensional locator using laser-displacement measurement was employed to measure micro deformation of the CFRP specimens caused by moisture absorption. The curvature of surface was observed due to the distribution of moisture contents. The coupling analysis which includes mechanical deformation and thermal diffusion was conducted. The numerical results are in good agreement with the test results.",

keywords = "Dimensional stability, Polymer-matrix composites (PMC), Water diffusion",

author = "Yoshihiko Arao and Jun Koyanagi and Hiroshi Hatta and Yuichiro Aoki and Hiroyuki Kawada",

year = "2007",

language = "English",

isbn = "9784931136052",

booktitle = "ICCM International Conferences on Composite Materials",

note = "16th International Conference on Composite Materials, ICCM-16 - {"}A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace{"} ; Conference date: 08-07-2007 Through 13-07-2007",

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TY - GEN

T1 - Effect of moisture absorption on dimensional stability in carbon/epoxy composites

AU - Arao, Yoshihiko

AU - Koyanagi, Jun

AU - Hatta, Hiroshi

AU - Aoki, Yuichiro

AU - Kawada, Hiroyuki

PY - 2007

Y1 - 2007

N2 - In order to quantify the dimensional stability in CFRPs at humidity environment, the water diffusion considering an anisotropy and moisture expansion behavior are investigated. Water diffusivity coefficients were determined by measuring the specimen weight during the moisture absorption test. The diffusivity coefficients of three main axial directions are obtained from three shapes specimen's result and solving simultaneous equations. A 3-dimensional locator using laser-displacement measurement was employed to measure micro deformation of the CFRP specimens caused by moisture absorption. The curvature of surface was observed due to the distribution of moisture contents. The coupling analysis which includes mechanical deformation and thermal diffusion was conducted. The numerical results are in good agreement with the test results.

AB - In order to quantify the dimensional stability in CFRPs at humidity environment, the water diffusion considering an anisotropy and moisture expansion behavior are investigated. Water diffusivity coefficients were determined by measuring the specimen weight during the moisture absorption test. The diffusivity coefficients of three main axial directions are obtained from three shapes specimen's result and solving simultaneous equations. A 3-dimensional locator using laser-displacement measurement was employed to measure micro deformation of the CFRP specimens caused by moisture absorption. The curvature of surface was observed due to the distribution of moisture contents. The coupling analysis which includes mechanical deformation and thermal diffusion was conducted. The numerical results are in good agreement with the test results.

KW - Dimensional stability

KW - Polymer-matrix composites (PMC)

KW - Water diffusion

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M3 - Conference contribution

SN - 9784931136052

BT - ICCM International Conferences on Composite Materials

T2 - 16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace"

Y2 - 8 July 2007 through 13 July 2007

ER -