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      組織에 따른 織物의 구조적 특성과 역학적 특성에 관한 硏究 = (A) study on the structural and mechanical properties of woven fabrics using peirce model

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      https://www.riss.kr/link?id=T9597372

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      다국어 초록 (Multilingual Abstract) kakao i 다국어 번역

      Using geometry equations of Piece’s model and energy method, the structural and mechanical properties of woven fabrics were predicted. The geometrical parameters were obtained from the density of woven abrics, crimp and yam count in order to predict the properties of woven fabrics. The experimentally obtained values of the yarn diameter were observed to be significantly different from those calculated by Peirce’s equation that can be used to predict the diameter from the yarn count. This observation required modification of the Peirce’s equation. The structure of woven fabrics was obtained by utilizing the yam diameter estimated by the modified Peirce's equation. The structural parameters based upon the modified Peirce's equation were very close to the experhentally obtained values. The mechanical behavior was also predicted from the structural parameters by applying the energy method.
      The load-extension relation was calculated by substituting the initial modulus and bending rigidity into the equation describing the structure of fabrics. In case of plain fabrics, the load-extension relations for cotton, wool and polyester fabric systems as a function of relaxation state of fabrics were in good accord with experimental data. Furthemnore, some fundamental s t r u c u parameters for Z/Z mat, 2/1 twill, 3.4 twill, satin and rib fabrics were also calculated by using both the Peirce‘s equation and the modified one and the calculated parameters were compared with experimental data. The load-extension curves obtained by calculation showed similar tendencie3 observed in plain fabric systems.
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      Using geometry equations of Piece’s model and energy method, the structural and mechanical properties of woven fabrics were predicted. The geometrical parameters were obtained from the density of woven abrics, crimp and yam count in order to predict...

      Using geometry equations of Piece’s model and energy method, the structural and mechanical properties of woven fabrics were predicted. The geometrical parameters were obtained from the density of woven abrics, crimp and yam count in order to predict the properties of woven fabrics. The experimentally obtained values of the yarn diameter were observed to be significantly different from those calculated by Peirce’s equation that can be used to predict the diameter from the yarn count. This observation required modification of the Peirce’s equation. The structure of woven fabrics was obtained by utilizing the yam diameter estimated by the modified Peirce's equation. The structural parameters based upon the modified Peirce's equation were very close to the experhentally obtained values. The mechanical behavior was also predicted from the structural parameters by applying the energy method.
      The load-extension relation was calculated by substituting the initial modulus and bending rigidity into the equation describing the structure of fabrics. In case of plain fabrics, the load-extension relations for cotton, wool and polyester fabric systems as a function of relaxation state of fabrics were in good accord with experimental data. Furthemnore, some fundamental s t r u c u parameters for Z/Z mat, 2/1 twill, 3.4 twill, satin and rib fabrics were also calculated by using both the Peirce‘s equation and the modified one and the calculated parameters were compared with experimental data. The load-extension curves obtained by calculation showed similar tendencie3 observed in plain fabric systems.

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      목차 (Table of Contents)

      • 목차
      • List of Figures = 1
      • List of Table = 3
      • 1. 서론 = 4
      • 2. 이론 = 6
      • 목차
      • List of Figures = 1
      • List of Table = 3
      • 1. 서론 = 4
      • 2. 이론 = 6
      • 2.1 Peirce의 구조 모델 = 6
      • 2.1.1 직물의 구조 모델 = 6
      • 2.1.2 평직의 구조 모델 = 9
      • 2.1.3 mat 직물 = 11
      • 2.2 직물의 역학적 특성 = 13
      • 2.2.1 에너지 방법 = 13
      • 2.2.2 에너지 방법의 적용 = 15
      • 3. 실험방법 = 18
      • 3.1 직물의 구조적 특성 = 18
      • 3.1.1 시료 = 18
      • 3.1.2 시료 처리 =18
      • 3.1.3 크림프율 = 19
      • 3.1.4 밀도와 번수 = 19
      • 3.1.5 실의 지름,크림프,직물의 두께 = 19
      • 3.2 직물의 역학적 특성 = 20
      • 3.2.1 실의 초기탄성계수와 굽힘 강성 측정 = 20
      • 3.2.2 직물의 인장 특성 = 20
      • 4. 결과 및 고찰 = 24
      • 4.1 Peirce 모델의 응용 = 24
      • 4.1.1 직물 상태에서의 실의 지름 변화 = 24
      • 4.1.2 수정된 구조 모델을 이용한 직물의 인장 특성 = 26
      • 4.2 Peirce 모델의 구조적 특성 = 40
      • 4.2.1 모델의 구조적 한계 = 40
      • 4.2.2 경사와 위사의 밀도비를 변화시킨 경우 = 40
      • 4.2.3 경사와 위사의 직경비를 변화시킨 경우 = 41
      • 4.2.4 fractional cover를 변화시킨 경우 = 41
      • 4.2.5 직물의 인장에 따른 Poisson비의 변화 = 42
      • 4.3 Peirce 모델의 역학적 특성 = 48
      • 4.3.1 크림프가 인장특성에 미치는 영향 = 48
      • 4.3.2 실의 초기탄성계수가 인장특성에 미치는 영향 = 48
      • 4.3.3 실의 굽힘 강성이 인장특성에 미치는 영향 = 49
      • 4.3.4 인장 시험 조건이 미치는 영향 = 49
      • 4.4 mat 직물의 구조적 특성 = 56
      • 4.4.1 경위사의 밀도비에 따른 크림프 한계 = 56
      • 4.4.2 fractional cover에 따른 크림프 한계 =56
      • 4.4.3 직물의 인장에 따른 Poisson 비의 변화 = 56
      • 5. 결론 = 61
      • 6. 참고문헌 = 62
      • ABSTRACT = 66
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