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博士論文
国立国会図書館館内限定公開
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Analyses of thermal properties using heterogeneous fabric model
- 国立国会図書館永続的識別子
- info:ndljp/pid/11511432
国立国会図書館での利用に関する注記
資料に関する注記
一般注記:
- Fabric is not homogeneous because the constituent yarns are interlaced at a certain weave angle. This structure must be considered to investigate the ...
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デジタル
- 資料種別
- 博士論文
- 著者・編者
- SHEN, HUA
- 出版年月日等
- 2017-09-25
- 出版年(W3CDTF)
- 2017-09-25
- 並列タイトル等
- 異方性のモデルに基づく織り物の熱伝導の研究
- 授与機関名
- 京都工芸繊維大学
- 授与年月日
- 2017-09-25
- 授与年月日(W3CDTF)
- 2017-09-25
- 報告番号
- 甲第853号
- 学位
- 博士(学術)
- 博論授与番号
- 甲第853号
- 本文の言語コード
- eng
- 一般注記
- Fabric is not homogeneous because the constituent yarns are interlaced at a certain weave angle. This structure must be considered to investigate the heat transfer behavior in a fabric. The heat transfer in the cross section and on the surface of a fabric was simulated by a two-dimensional (2D) heterogeneous model and a three-dimensional (3D) heterogeneous model, respectively. In the 2D heterogeneous model, the thermal anisotropy of the yarn was taken into account and heat transfer along the longitudinal and transverse directions of the yarn was treated independently. The temperature distribution in the cross section of fabric indicated that when the anisotropy of the fiber thermal conductivity was high, heat transferred significantly faster along the longitudinal direction than along the transverse direction of the yarn, and the equilibrium temperature distribution was strongly influenced by heat transfer in the longitudinal direction. In the 3D heterogeneous model, heat can transmit along the warp and weft yarns of mixed fabric independently. The temperature distribution on the surface of fabric suggested that longitudinal thermal conductivity of yarn had a substantial effect on the heat transfer for mixed yarn fabric. For the thermal insulation of multilayer fabrics, the fabric resistance and air layer resistances between fabrics cannot be ignored. The estimation equation to predict the fabric and air layer resistance was constructed. By using this equation, the surface roughness of fabrics showed the strong effect on the air layer resistance. The heat transfer in the furs and fabrics was also studied using the finger sensor method. The temperature change (UTmax) inside the furs and on the surface of fabrics under different compression pressure was determined to simulate a finger pressing a fabric. The change inside the furs showed that UTmax was affected by the pile length and air volume ratio. When the pile length was long, UTmax was almost constant and independent of pile length. A linear relationship between the volume ratio of air and UTmax was observed when the pile length was long.
- 国立国会図書館永続的識別子
- info:ndljp/pid/11511432
- コレクション(共通)
- コレクション(障害者向け資料:レベル1)
- コレクション(個別)
- 国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文
- 収集根拠
- 博士論文(自動収集)
- 受理日(W3CDTF)
- 2020-07-06T20:31:19+09:00
- 記録形式(IMT)
- application/pdf
- オンライン閲覧公開範囲
- 国立国会図書館内限定公開
- デジタル化資料送信
- 図書館・個人送信対象外
- 遠隔複写可否(NDL)
- 可
- 掲載誌(URI)
- 連携機関・データベース
- 国立国会図書館 : 国立国会図書館デジタルコレクション