たばこ刻みの圧縮特性曲線
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概要
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The purpose of this study was to obtain the relationship between specific volume v and compressive stress P of tobacco shreds during compression and to disclose the influences of experimental factors, physical properties and compressive hysteresis of shreds upon the v-P relation. Experiments were carried out with five experimental factors, that is, the variety of tobacco V (Fluecured V_1 and Domestic V_2), the leaf position on a stalk p (5 levels), the moisture content w (7〜18% WB), the number of compression N (1-3) and the loosening shreds after compression. The experimental data thus obtained were analyzed by means of a statistical method. The important results obtained were as follows: (1) The relationship between v and P of tobacco shreds during compression was able to be shown by the following formula, In P=K_0+K_<1v>. (2) The sign of the direction coefficient K_1 was minus, and the absolute value of K_1 increased as p decreased or w increased. The absolute value of K_1 in V_1 was larger than that in V_2(3) The sign of the intercept K Was plus, and the absolute value of K_0 was nearly constant, independent of the condition of V, p and ω. (4) The physical properties, which affected the direction coefficient, were the elastic modulus, the specific volume of tobacco itself and the correlative specific volume between shreds after loose fill. Among these properties, the elastic modulus was the most influential one. (5) The increase of N caused stress relaxation and made the absolute values of K_0 and K_1, higher. The loosening of shreds after compression decreased the degree of stress relaxation.
- 社団法人日本材料学会の論文
- 1979-02-15
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