繊維の圧縮特性に関する研究(第 31 報) : 新しい試作装置を使用しての繊維塊の挙動について

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The purpose of the research in this paper is to make clear the compressional behaviour by the aid of new trial manufactured apparatus which is introduced in previous thesis, Part XXX in thease papers. Where, this new trial manufactured apparatus is improved apparatus, it is improved apparatus of trial manufactured apparatus in Japanese Patent Number 486847. As the test pieces in this experiment, used single fibre's lump and blended fibre's lump of many kind's fibres. Furthermore, the purpose of the research in this paper is to make clear the compressional behaviour through the many factors of plus and minus temperatures, the number of times in hysteresis, state of fibre's lumps, many kind's fibres, cut length of each fibres, fineness, deniers of each fibres, porosity percentages, strain of volume percentages, percentages of critical porosity in theory and critical strain of volume percentages in theory. As the test pieces which used in this experiment is following, (1) Single fibre's lump of nylon, viscose rayon (crimped dull), pylen, urylon, tetoron, beslon, alon, kanekalon (N-type), bemberg and polynozic fibre. (2) Blended fibre's lump (As blended percentages is 30%, 50% and 70%) of nylon, viscose rayon (crimped dull), pylen, urylon, tetoron, beslon, alon, kanekalon (N-type), bemberg and polynozic fibre. Here, case of (1) and (2), namely, as factors of temperature is normal temperature in this experiment. (3) Single fibre's lump of the above test pieces did the experiment in range from 10℃ to 80℃ of plus temperature. (4) Single fibre's lump of the above test pieces did the experiment in range from 0℃ to-20℃ of minus temperature. (5) As number of times of hysteresis is from I to V, on the above all test pieces. Thus, the above all test pieces from (1) to (5) did the experiment in this paper by the aid of new trial manufactured apparatus. Accordingly, in this paper, the author pointed out four important points as a noteworthy fact. Namely, this four important points have relation to relative curve between pressure P (kg/cm^2) and porosity percentage ε (%). Also, this four important points have relation to relative curve between pressure P (kg/cm^2) and strain of volume percentage Ev・p (%). This four important and noteworthy points is following, (1) It is a point in that time begin an experiment. This state is state in pressure P=0kg/cm^2. This point show by sign A. (2) It is a point in that time maximum increasing pressure P=5kg/cm^2. This point show by sign B. (3) It is a point in that time pressure P=0kg/cm^2 for decreasing pressure. This point show by sign C. (4) It is a point in that time which movements and displacement of the column of mercury in the glass capillary tube is perfectly and completely stationary for recovery. This point show by sign D. Here, the author did the comparison between porosity percentages ε (%) and percentages of critical porosity in theory ε'(%) in this important four points. Also, the author did the comparison between strain of volume percentages Ev・p (%) and critical strain of volume percentages in theory E'v・p (%) in this important four points. Particularly, in this experiment, the author did the comparison between porosity percentages ε (%) and percentages of critical porosity in theory ε'(%) in this important B point. Also, the author did the comparison between strain of volume percentages Ev・p (%) and critical strain of volume percentages in theory E'v・p (%) in this important B point. As a strong, a good and sufficient reason that did the comparison in this important B point, value of porosity percentages ε (%) in this important B point is minimum value. And value of strain of volume percentages Ev・p (%) in this important B point is maximum value. Accordingly, the author did the comparison in this B point. The author show all total mean values x^^- and its range of ε (%) and Ev・p (%) of all test pieces at B point in this experiment. All total mean values x^^- of porosity
金城学院大学の論文
1996-03-20

著者

寺島功
金城学院大学

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