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短線加熱法による極微細単線の熱伝導率測定 : 第1報:測定法の理論的検討

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概要 In this paper, a new short-hot-wire method for measuring thermal coductivity of a fine fiber is proposed. This method is based on the theoretical solution of one dimensional steady heat conduction alo...ng the hot-wire and fiber. The hot-wire generates an uniform heat flux by supplying constant electric current, and both ends of wire are maintained initial temperature. Fiber is attached to the center area of hot-wire. By using short-hot-wire technique, the fiber temperature at the attached point and heat rate to the fiber can be accurately obtained when the average temperature and heat rate of the hot wire are measured. Therefore, the thermal coductivity of fiber can be easily estimated. According to the theoretical analysis, this method can obtain thermal coductivity in the range up to 1000 W/mK within an error of ±1% for the fiber of 10~30μm in diameter.続きを見る

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登録日 2009.04.22
更新日 2017.06.07