巻号一覧
58 巻, 8 号
選択された号の論文の2件中1～2を表示しています
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Original Papers
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喜成 年泰, 新宅 救徳, 下川 智嗣2005 年 58 巻 8 号 p. T95-T100
発行日: 2005年
公開日: 2006/02/22
ジャーナル フリーWhen tension acts on a yarn running on a cylindrical bobbin, the yarn leaves for a new equilibrium position and draws a curve on its surface. In this paper, we assumed that the yarn was free to bend, but did not stretch and that its inertial force was negligible compared to the external forces such as reaction force and friction force. The force balance equations, which determined a yarn path contacting with a curved surface, were developed in vector form on the basis of differential geometry. We derived a set of differential equations describing the space curve drawn by the yarn traveling on the cylindrical surface. Two experiments were compared with the simulations. The measured yarn path and tension for two actual examples turned out that the parabola obtained by our simulation was a fairly good approximation for the yarn path sliding on a cylindrical surface.抄録全体を表示PDF形式でダウンロード (1686K) -
李 受〓, 上條 正義, 西松 豊典, 清水 義雄2005 年 58 巻 8 号 p. T101-T108
発行日: 2005年
公開日: 2006/02/22
ジャーナル フリーIn this paper, we examined the characteristics of tactual motion while evaluating the hand of fabrics. So we made the experimental glove type measurement system with accelerator sensor. The acceleration of finger motion in evaluating the hand of fabric such as resilience, roughness, flexibility and softness was measured. Subjects who consisted of experts and non-experts wore this measurement system on their right hand and with their eyes closed, and evaluated a piece of non woven fabric. As the result, human had the phase of finger movement to evaluate the hand. And they had different characteristics of finger movement according to the purpose of hand evaluation. Especially, it was found that the linear finger movement was the important factor to improve the discrimination ability in evaluating the hand of fabric.抄録全体を表示PDF形式でダウンロード (3497K)
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