Diffusion Model of Elastic Properties of Fiber Reinforced Plastic in Humidification Conditions

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In this paper, there is consideration of a model of the dependence of in-plane shear modulus of the carbon fiber reinforced plastics on the time spent in thermally humid conditions is considered. This study is based on the Academician V.M. Buznik’s ideas of the effect of molecular transformations in polymer matrix on their macroscopic properties. The moisture transfer kinetics and changes of the in-plane shear modulus of the carbon fiber reinforced plastics during drying and humidification at 60°C have been investigated. Fick’s second law was used to approximate the dependence of the shear modulus on time, because of the dependence of mechanical properties on moisture content, which is commonly modeling by this law.

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Sobre autores

V. Lebedev

Larionov Institute of Physical-Technical Problems of the North of Siberian Branch of the Russian Academy of Sciences

Email: startsev@iptpn.ysn.ru

Corresponding Member of the RAS

Rússia, Yakutsk 677980

O. Startsev

Larionov Institute of Physical-Technical Problems of the North of Siberian Branch of the Russian Academy of Sciences; NRC “Kurchatov Institute” – VIAM

Autor responsável pela correspondência
Email: startsev@iptpn.ysn.ru
Rússia, Yakutsk 677980; 353466 Moscow

G. Kornienko

NRC “Kurchatov Institute” – VIAM

Email: startsev@iptpn.ysn.ru
Rússia, 353466 Moscow

Bibliografia

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2. Fig. 1. Kinetics of drying and humidification of carbon fiber samples measuring 100 × 100 mm cut from plates G1, G2, G3. Solid lines are approximated by model (3) for samples of plates G1 (1), G2 (2), G3 (3).

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3. Fig. 2. Kinetics of drying and humidification of carbon fiber samples 50 × 50 mm in size, cut from plates G1, G2, G3. Solid lines are approximated by model (3) for samples of plates G1 (1), G2 (2), G3 (3).

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4. Fig. 3. Kinetics of the relative change in the shear modulus of carbon fiber samples measuring 100 × 100 mm cut from plates G1, G2, G3. Symbols – experimental data, lines – approximation by model (4) for samples of plates G1 (1), G2 (2), G3 (3).

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