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

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Abstract

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.

About the authors

V. P. 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

Russian Federation, Yakutsk 677980

O. V. Startsev

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

Author for correspondence.
Email: startsev@iptpn.ysn.ru
Russian Federation, Yakutsk 677980; 353466 Moscow

G. V. Kornienko

NRC “Kurchatov Institute” – VIAM

Email: startsev@iptpn.ysn.ru
Russian Federation, 353466 Moscow

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