Abstract
In this work the possibility of use of the built-in fiber-optical sensors (Bragg's sensors) of deformation for control of a condition of polymeric fiberglasses on epoxy polymer matrix ED-I cured at the increased temperature was investigated. Sensors were inserted in different layers of the layered plastic reinforced by biaxial fiber glass fabric. The package of layers had quasiisotropic structure. The sample made by method of vacuum impregnation was affected by saturated steam (90 °C) within 6 months. Operability of system of measurement has been as a result shown and swelling parameters in different layers of FGRP were recorded. For measurement measuring systems of two types — on a superbright light-emitting diode and on the tunable laser were used.
Highlights
Influence of atmospheric moisture is the most important of climatic factors by which the polymeric composite materials (PCM) at operation of products are affected in nature
As a result of diffusive penetration of water into a polymeric matrix and into the interface between the fiber and matrix in fibrous PCM the part of molecules of water is immobilized on polar groups of polymer, weakening thereby interchain interaction in a matrix and adhesive interaction on limit of the section polymer matrix - fibers
The purpose of work consisted in clarification of opportunities to use fiber-optical sensors of Bragg (FBGsensors) for studying micromechanical moist arising in PCM at the accelerated heat-moist influence which is widely applied to modeling of climatic aging of PCM
Summary
Influence of atmospheric moisture is the most important of climatic factors by which the polymeric composite materials (PCM) at operation of products are affected in nature. Unlike metal FBG strain gages – sensors do not rust and they can be applied in the damp hot environment. Besides their accuracy is higher than at wire strain gages. The purpose of work consisted in clarification of opportunities to use fiber-optical sensors of Bragg (FBGsensors) for studying micromechanical moist arising in PCM at the accelerated heat-moist influence which is widely applied to modeling of climatic aging of PCM.
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