繊維の圧縮特性に関する研究 : (第 22 報)単独繊維塊の圧縮特性に見られる正と負の温度領域の関係

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The purpose of the research in this paper is to make clear the compressional behaviour through the behaviour of temperature dependence with hysteresis phenomenon of single fibre's lump. Also, the purpose of this paper is to make a summary of various facts. Namely, it is to make clear the compressional behaviour through the relations of pressure, durability, property of recovery, porosity percentage, strain of volume percentage, critical porosity percentage in theory, critical strain of volume percentage in theory, various phenomenons in range of plus of temperature, various phenomenons in range of minus of temperature and between range of plus and minus in temperature. Furthermore, the author searched for relation among the many important factors. As the range of plus in temperature set within the limits from 10℃ to 80℃. And this experiment of behaviour of temperature dependence was tried by each step of 10℃ in temperature. Also, as the range of minus in temperature set within the limits from 0℃ to -20℃. And this experiment of behaviour of temperature dependence was tried by each step of -5℃ in temperature. Here, the author examined compressibility, compressional resilience, durability of compression, property of recovery in compression, comparison of porosity percentage ε(%) and critical porosity percentage in theory ε'(%), comparison on the strain of volume percentage Ev・p(%) and critical strain of volume percentage in theory E'v・p(%) through the analytical research of Table 1∿10 under the temperature of range of plus and minus. These experimental results which were obtained in range of plus and minus of temperature are summerized in Table 1∿10 of this paper. The author hope the reader that will understand tendency and phenomenon of range of plus and minus in temperature from Table 1∿10 and "List of Symbols" in this paper. And the tendency and phenomenon in this paper shows a very interesting tendency and phenomenon. Furthermore, this trial manufactured apparatus which used in experiment of a series of thesis, Part 12∿21 is a convenient to repeat the measurement. The results in this experiment is reported after careful consideration by the author, head and research professor P. Grosberg of textile engineering, department of textile industries, the university of Leeds in England and head professor S. Backer of textile fiber and polymer division, department of mechanical engineering, Massachusetts Institute of Technology in United States of America. And the author found that these investigated results in this experiment had not contradictory points. Thus, these experimental results which were obtained in the way described above proved the rationality. In a series of thesis, from Part 12 to Part 22,compressional behaviour with the property of dependence in temperature of single fibre's lump has become a theme of research. And many phenomenons on the compressional behaviour have been done to make clear in a series of thesis. Where, as a test piece used single fibre's lump. Also, as a temperature adopted the range of plus and minus in temperature. And the range of plus in temperature was from 10℃ to 80℃. Also, the range of minus in temperature was from 0℃ to -20℃. And investigation from all approaches is being carried out. But, further investigation on the test piece and temperature is necessary. Namely, as a test piece is blended fibre's lump and as a temperature is the range of temperature of case more high and low in range of plus and minus than a series of thesis, from Part 12 to Part 22. These experimental researches must leave this for a future study. The author hope this kind of study will continue. The theoretical equation of porosity percentage ε(%) and percentage of critical porosity in theory ε'(%) under pressure P is following, ε(%)=(Vo-ΔVp-Vf)/(Vo-ΔVp)×100(%)=(Vp-Vf)/Vp×100(%)=(1-Vf/Vp)×100(%) also, ε'(%)=Vf/Vo×100(%) The theoretical equation of strain of volume percentage Ev・
金城学院大学の論文
1989-03-20

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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 22 報)単独繊維塊の圧縮特性に見られる正と負の温度領域の関係

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