繊維の圧縮特性に関する研究 : (第 25 報)単独繊維塊の外圧と体積歪率の関係線図における履歴現象を主とする物理的要因の解明

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The purpose of the research in this paper is to make clear physical chief factors take the initiative hysteresis phenomenon on the relative curve between pressure P (kg/cm^2) and strain of volume percentages Ev・p(%) on the compressional behaviour of fibres in case of each single fibre's lump. As physical chief factors on the compressional behaviour of fibres is following, total strain of volume percentage, strain of volume percentage in that time begin an experiment Do(%), total compression D(%), elastic compression or compressive elasticity Dc(%), residual compression Dp(%), degree of compressional resilience or compressive elastic degree Dc/D(%), compressive percentage or compressional percentage D/Do(%), total quantity of energy A+B (cm^2), quantity of plastic energy A (cm^2), quantity of elastic energy B (cm^2), degree of elasticity into compressional energy B/A+B(%), permanent deformation Do-D_1/Do(%)=Dp/Do(%), elastic after effect I_1∿I_3(%), strain of volume percentage Ev・p(%), compressional curve Io∿I, recovery curve I∿I_1,pressure P (kg/cm^2), and percentage of critical strain of volume in theory E'v・p(%). Also, as the test pieces in this experiment, Nylon (1.5 deniers×44m/m, 3 deniers×70m/m, 10 deniers×76m/m and 20 deniers×83m/m), Viscose Rayon Crimped Dull (1.5 deniers×38m/m, 3 deniers×57m/m and 5 deniers×51m/m), Beslon (3 deniers×55m/m, 5 deniers×55m/m and 7 deniers×55m/m), Urylon (3 deniers×63m/m and 5 deniers×51m/m), Pylen (1.5 deniers×38m/m, 2 deniers×51m/m and 3 deniers×76m/m), Tetoron (1.5 deniers×38m/m, 3 deniers×70m/m and 6 deniers×51m/m) and Alon (2 deniers×51m/m and 3 deniers×70m/m) have been used. In this experiment, compressional curve Io∿I and recovery curve I∿I_1 between pressure P (kg/cm^2) and strain of volume percentage Ev・p(%) have been used. And as the number of times in hysteresis adopted case from the first time to the fifth time in the increasing and decreasing pressure. The experiment of this thesis is tried under the pressure from 0kg/cm^2 to 5kg/cm^2 at the each stages of the increase and decrease in pressure. And the author concentrated special attention on the increase and decrease of pressure from 0kg/cm^2 to 0.05kg/cm^2. Where, the author used trial manufactured apparatus for this experiment. This trial manufactured apparatus is Japanese Patent Number 486847. Quantitative measurement of fibre is not easy to conduct chiefly because of its indifinite shape. The important condition required for the apparatus is ever to exactly record the changes of stress imposed on the fibre. Befor the experiment, the author made control of fibre's weight into the gum ball. Also, the author made control of carding of fibre's lump and moisture regain of each fibre's lump as the test pieces in this experiment. Also, before the experiment the author must obtain these factors as a measuring value for calculating the strain of volume percentage Ev・p(%) and percentage of critical strain of volume in theory E'v・p(%). These factors is made by ten factors. Here, quantity of plastic energy A (cm^2), quantity of elastic energy B (cm^2), total quantity of energy A+B (cm^2) and degree of elasticity into compressional energy B/A+B(%) show by factors of area in the relative curve between pressure P (kg/cm^2) and percentage of strain of volume Ev・p(%). Accordingly, the author measured area of these important factors by the aid of X-PLAN 360 Area Curve Meter which is equipped with Micro-Computer. In this experiment, the author made relative curve between pressure P (kg/cm^2) and strain of volume percentage Ev・p(%), for variety of each fibre and for denier of each fibre. Also, the author as the relative curve made the relative curve of case in hysteresis of the first time and the fifth time. And the author examined many important and chief factors from relative curve of case in hysteresis between pressure P (kg/cm^2) and strain of volume percentage Ev・p(%). Thus, the author a
金城学院大学の論文
1991-03-20

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寺島功
金城学院大学

繊維の圧縮特性に関する研究 : (第 25 報)単独繊維塊の外圧と体積歪率の関係線図における履歴現象を主とする物理的要因の解明

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