著者

吉川 俊夫 山田 英介 中原 崇文

出版者

愛知工業大学

雑誌

総合技術研究所研究報告 (ISSN:13449672)

巻号頁・発行日

vol.5, pp.19-23, 2003-07-20

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Epoxy resin composites containing steel grinding chips as a conducting filler was subjected to heat cycling tests in order to evaluate the thermal stability of electrical resistance. The effect of the content of grinding chips, magnetization and precure temperature in the curing process was examined and this resulted in finding the thermal stability to depend mainly on the precure temperature: the higher the precure temperature, the higher was the thermal stability. There was also shown to be a minimum value hi the electrical resistance of the composites at the temperature between 50 and 1OO℃.The ratio to the minimum resistance was found to depend mainly on the precure temperature. It has therefore been clarified that the thermal coefficient of the electrical resistance in the epoxy composites can be controlled by adjusting the precure temperature in the during process.

著者

吉川 俊夫 岩田 博之 中原 崇文

出版者

愛知工業大学

雑誌

総合技術研究所研究報告 (ISSN:13449672)

巻号頁・発行日

vol.5, pp.11-17, 2003-07-20

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The use of waste chips from high-speed grinding processes was examined as an electrically conductive filler in an epoxy resin. The chips were mixed with the liquid epoxy resin, and the mixture was magnetized by being passed through a solenoid coil. The mixture was then cured in an oven. High content of the chips, strong magnetizing currents and high precure temperatures increased the final conductivity of the cured product. By this method, cured products having electrical resistivity of 10^2Ω・cm were obtained.

著者

白岩 義夫 増田 公男 林 文俊 石垣 尚男

出版者

愛知工業大学

雑誌

総合技術研究所研究報告 (ISSN:13449672)

巻号頁・発行日

no.1, pp.85-90, 1999-06

被引用文献数

2

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本論文では,幼稚園児におけるテレビ視聴とテレビゲーム遊び行動が子どもの視力に与える影響について,園児の保護者を対象とした調査に基づいて分析された結果が報告された。1日のテレビ視聴時間は週日よりも休日が,また女児よりも男児の方が長かった。テレビゲーム遊びの経験は男児の方が多かったが,経験月数は逆に女児が多い傾向にあった。テレビゲーム遊びの頻度及び1回当たりの遊び時間は男児が長かった。テレビ視聴時間と視力の間,テレビゲーム遊びの経験及び時間と視力の間には明確な関係は見出だせなかった。

著者

戸伏 壽昭 古市 裕司 杉本 義樹

出版者

愛知工業大学

雑誌

総合技術研究所研究報告 (ISSN:13449672)

巻号頁・発行日

no.10, pp.75-83, 2008-10

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Tensile deformation properties and pulsating-plane bending, alternating-plane bending and rotating-bending fatigue properties of a superelastic thin tube (SE-tube) and a highelastic thin wire (FHP-wire) of TiNi alloy were investigated experimentally. The main results obtained are as follows. (1) The stress-strain curve of SE-tube in tension draws a large hysteresis loop and elastic modulus is 35GPa. Therefore, SE-tube is superior as a medical catheter tube with flexibility and shape recovery. The stress-strain curve of FHP-wire is close to a straight line up to strain of 4% and stress of 1500MPa and elastic modulus is 50GPa. Therefore, FHP-wire is superior as a medical guide wire with flexibility, high pushability and torque transmission performance. (2) With respect to fatigue properties of NT-tube and FHP-wire, the fatigue life in pulsating-plane bending is longer than those in alternating-plane bending and rotating bending. The difference in the fatigue life between alternating-plane bending and rotating bending is small. The relationship between maximum bending strain and the number of cycles to failure in low-cycle fatigue can be expressed by a power function in every bending fatigue. (3) The maximum bending strain at the fatigue limit of SE-tube is 0.8%-1.0% which is close to a starting strain of stress-induced martensitic transformation. The maximum bending strain at the fatigue limit of FHP-wire is 0.7%-0.8%.

著者

林 文俊

出版者

愛知工業大学

雑誌

総合技術研究所研究報告 (ISSN:13449672)

巻号頁・発行日

vol.1, pp.133-136, 1999-06-30

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The purpose of this study was to construct, measurement scale for attitude toward creativity. The science and engineering male undergraduates (N=166) rated themselves on 120-items inventory. From the factor analysis of this data, six factors were extracted : I. Challenging spirit, II. Aggressiveness and Confidence, III. persistence and Convergence, IV. Originality, V. Curiosity, and VI. Flexibility. A new 48-items scale, Attitude toward Creativity Scale (ACS), was constructed by selection of 8-items in each factor.