FRP用ガラス繊維縦弾性係数の温度依存性

概要

論文の詳細を見る
Elastic moduli of glass fiber that is used for reinforcement of FRP are measured in the temperature range from 20 to 300℃. In this experiment, three kinds of glass fiber samples were prepared ; E-glass, C-glass and T-glass. Load was placed on a specimen in a transparent furnace controlled at predetermined temperatures. The elongation of specimen was read by a reading microscope and the diameter of specimen was measured by a micrometer. The elastic modulus of glass fiber was calculated by the gradient of load-elongation diagram, the diameter of glass fiber and the distance between the marks on the glass fiber specimen. The results obtained are as follows; (1) The elastic modulus of glass fiber obtained was 60〜80 Gpa at room temperature, and depended on cpmposition and diameter fo glass fibers. (2) The elastic modulus of E-glass decreased with increasing temperature, while that C-glass did not change very much with temperature and that of T-glass increased with temperature. (3) In any case, the elastic moduli of small size fibers were larger than those of large size fibers.
社団法人日本材料学会の論文
1993-04-15