Effect of Aspect Ratio on Flexural Modulus of Fiber-Reinforced Compesite Material

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  • SUETSUG Kenichiro
    Productien Engineering Laboratory, Matsushita Electric Industrial Co., Ltd.
  • SAKAIRI Tadashi
    Productien Engineering Laboratory, Matsushita Electric Industrial Co., Ltd.

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Other Title
  • 繊維強化複合材料の機械的強度に関する解析シミュレーション　Ｉ　　繊維強化複合材料の曲げ弾性率に対するアスペクト比の寄与
  • センイ キョウカ フクゴウ ザイリョウ ノ マゲ ダンセイリツ ニ タイスル

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Description

The fiexural Modulus of fiber-reinfbrced injection moldings has been investigated as a function of aspect ratio with the Halpin-Tsai equation.<BR>The flexural modulus of injectien moldings of glass short-fiber-filled polycarbonate and the average aspect ratio of glass fibers were measured. The experimental results did not correspond to the theoretical results of the Halpin-Tsai equation obtained on the assumption that the leng fibers were oriented toward one direction on a 2-dimensional plate. The modified Halpin-Tsai equation which takes into considcration the distribution of fiber lengths and orientations lessened the difference between the numerical results and the experimental ones. The Simulation by means of this modified equation and comparison with the experimental results which indicate the relation between the fiexural modulus and the average aspect ratio gave a good correspondence between the experimental results and the theoretical ouesonsuchinjection moldings as glass short-fiber-reinforced polypropylane.<BR>Consequently, we can now predict, without injecting into a mold, the combination of materials, the weight fraction of the filler, and other factors which will give the needed fiexural modulus.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 41 (1), 57-61, 1984

    The Society of Polymer Science, Japan

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