• Title/Summary/Keyword: weave

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A Statistical Study of Effective Properties due to Fiber Tow Misalignment and Thickness Change for Plain Weave Textile Composites (섬유다발 배열 및 적층수에 따른 평직복합재료 등가물성치의 변화에 관한 통계적 연구)

  • 우경식;서영욱
    • Composites Research
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    • v.13 no.6
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    • pp.63-72
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    • 2000
  • In this paper, statistical treatments of effective properties for plain weave textile composites were presented. Configurations up to 32 layers with varied stacking phase shifts were considered. Effective properties were calculated by numerical simulation in which uni-axial tensile and shear load were applied at unit cell. Sample analysis was utilized to consider the inherent randomness in the phase shift and the results were treated statistically. It was found that effective properties were dependent on stacking phase shifts for thin plain weave textile composites. The distribution of $E_{xx}$ and $V_{xy}$ were skewed and the range of possible values was relatively large. As the number of layers increased, however, the distribution width became narrower and mean values converged. In contrast, $G_{xy}$ was not affected by phase shifts and thickness changes.

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Effective Thermal Conductivities of CE3327 Plain-weave Fabric Composite (CF3327 평직 복합재료의 열전도도)

  • 구남서;문영규;우경식
    • Composites Research
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    • v.15 no.5
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    • pp.27-34
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    • 2002
  • The purpose of this study is to measure and predict the thermal conductivity of CF3327 plain-weave fabric composite made by Hankuk Fiber, Co. An experiment apparatus based on the comparative method has been made to measure the thermal conductivities of the composite material. Its accuracy was proved by measuring the thermal conductivity of graphite which is well-known. Micro-mechanical approaches are useful to assess the effect of parameters such as fiber and matrix material properties, fiber volume fraction and fabric geometric parameters on the effective material properties of composites. In this study, prediction was based on the concept of three dimensional series-parallel thermal resistance network. Thermal resistance network was applied to unit ceil model that characterized the periodically repeated pattern of a plain weave. The numerical results were compared with experimental one and good agreement was observed. Also, the effects of fiber volume fraction on the thermal conductivity of several composites has been investigated.

A Study on the textiles of the Age of Kojosun Booyeo and Kogooreo which were excabated in the East and Nort Area of China. (중국 동북지역에서 출토된 고조선, 포여, 고구려시대의 직물 연구)

  • 심연옥
    • Journal of the Korean Society of Costume
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    • v.22
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    • pp.61-70
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    • 1994
  • the purpose of study is to grasp the actual state of the textiles of Kojosun, Booyeo and Kogooryeo, by examining and studying about the excavated article of the textile of the Booyeo Age which was being gamered in the Research Institute of Study of antiquities of Civilization of gilimsung without being analyzed and examined after being excavated at September in 1990 and 1993, the textile of Kojosun Age wich was excavated and examined at East and North Gilimsung in China and the textile excavated and examined at the Kogooryeo grave at jiban China. 1. The kinds of textiles of Booye Age are warp kum plin weave silk plain weave bang gong Sa, and drawn and dyed textile, It is deemed that the real state of keum, Jeung and Hwi in the old literature of Sam guk Ji was grasped. 2. It emerges that more detailed wool than the wool fabric of China area of the same age was manufactured as the textile of Kojosun Age. hemp cloth corresponds to 12 Seung, in converting into fabric width of 50cm. 3. Keum was examined and reported as the textile of Kogooryeo Age and the real state of Woonkeum of Kogooryeo Age was grasped through "Wang ja moon keum" of Keumjang of mural of South and North I room of the grave that the same keum was excavated. The real state of dyed textile of hemp was grasped as the red hemp cloth was examined. Moreover the real state of development of advanced technique to weave with machine appeared by the grasp of inclination of loom with reed of Kogooryeo.Kogooryeo.

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Psychological Characteristic Analysis of Brick Pavement Patterns in Rural Area (농촌공간에 적용된 벽돌포장 줄눈의 심리적 특성 분석)

  • Kim, Dae-Hyun;Shin, Ji-Hoon
    • Journal of Korean Society of Rural Planning
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    • v.14 no.1
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    • pp.1-7
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    • 2008
  • Recently, brick pavement were widely introduced on the pavement in rural area. A variety of vision effects can be created from patterns of brick pavement. However, in most of brick pavement works, human psychological characteristics were not concerned. The purpose of this research was to discover psychological effect on brick pavement pattern. The results of the research can be summarized as follows: 1)Psychological impression on brick pavement pattern is similar among man and woman groups. 2)Stack bond and running bond pattern have a simple, relaxed, organized, and comfortable psychological characteristics. Basket weave & stack bond pattern has a simple and organized psychological characteristic. Herringbone bond pattern has a complex, dislike and uncomfortable psychological characteristic. Pinwheel bond pattern has a highly complex psychological characteristic. Basket weave and Basket weave variation bond pattern have a common psychological characteristic. 3)Employment of brick pavement pattern on this research is not highly preferred, hence it is necessary to develop a brick pavement patterns that have human psychological characteristics be concerned.

Crimp Angle Dependence of Effective Properties for 3-D Weave Composite (굴곡각에 따른 3차원 평직 복합재료의 등가 물성치 예측)

  • Choi, Yun-Sun;Woo, Kyeongsik
    • Composites Research
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    • v.29 no.1
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    • pp.33-39
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    • 2016
  • In this study, geometric modeling and finite element analysis of 3-dimensional plain weave composite unit cell consisting of 3 interlaced fiber tows and resin pocket were performed to predict effective properties. First, tow properties were obtained from micro-mechanics finite element unit cell analysis, which were then used in the meso-mechanics analysis. The effective properties were obtained from a series of unit cell analyses simulating uniaxial tensile and shear tests. Analysis results were compared to the analysis and experimental results in the literature. Various crimp angles were considered and the effect on the effective properties was investigated. Initial failure strengths and failure sequence were also examined.

Effect of Fabric Structural Characteristics on the Image and Sensibilities (의류소재의 구조적 특성이 감각특성 및 이미지에 미치는 영향)

  • 이윤숙;신정원;안미영;김은애
    • Journal of the Korean Society of Clothing and Textiles
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    • v.25 no.8
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    • pp.1408-1419
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    • 2001
  • The purpose of this study was to investigate the fashion trends of last three years and how the trends were imaged by the structural characteristics of the fabrics. The characteristics for 897 fabrics were analyzed from four kinds. eleven volumes of fashion trend magazines. From these magazines, three panels categorized by their frequencies as nine images such as natural, innocent, ethnic, childish, casual, classic, modern and technical, Sub-images of each image such as rustic, irregular, decorative, etc were also categorized. For the each image, fiber contents and structural characteristics of weave type, weight, density, yarn size, twist and fabric finishes were investigated in terms of frequency, range and mean, Results showed that chiffon and organza seemed to have very specific images and used to represent specifically the romantic or ethnic images; whereas voile and jersey was used to represent various images. For S/S seasons, most popular fiber type was cotton. The weave type was not the important factor to give variations in images; plan weave exclusively used irrespective of image. For the romantic, ethnic and innocent images, rather light fabrics were used. For the childish and natural, medium weights, and for the technical, modern and classic images heavy weight fabrics were used. Vaious finishes were employed to represent specific images.

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Development and Production of Cultural Products Using Jumchi Technique (줌치기법을 활용한 문화상품 개발 제작)

  • Jung, Jin Soun
    • The Journal of the Convergence on Culture Technology
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    • v.8 no.3
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    • pp.83-89
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    • 2022
  • For the purpose of promoting the excellence of Korea's unique traditional hanji around the world, it was intended to promote 'modernization of tradition' by producing and presenting cultural products suitable for modern sensibility using traditional hanji which is widely used in the arts. First of all, using hanji as a material, jumchi hanji was made by jumchi technique. Cut to a certain width according to the cultural products such as laptop case, cell phone case, hat, and bag. Weave the cut jumchi hanji with plaine weave, twill weave, and hexagon depending on the purpose of the cultural products to be made. A cultural products were made by matching the woven jumchi hanji with artificial leather, cotton, and denim.

A Study on the Pile Fastness of the Cotton Double Velvet (Cotton Double Velvet의 Pile 보지성에 관한 특성)

  • Ryu Duck Hwan;Park Sam Sung
    • Journal of the Korean Society of Clothing and Textiles
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    • v.11 no.1
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    • pp.1-10
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    • 1987
  • We selected four kinds of cotton velvet and chafed before and after cleaning, then in accordance with abrasion times we measured of pile exclusion rate and examined the relationship of the pile exclusion rate, its thickness and the air permeability. An experimental study was carried out the pile weave construction, the density, the yarn to yarn, the shrinkage, and the pile substantiality. The results were as follows: 1. In accordance with increments of shrinkage phenomenon of pile fabric for cleaning process, pile exclusion rate was decreased. 2. The ground weave of pile fabric and the yarn to yarn of warp and weft direction were affected by the pile exclusion. 3. It is linear of pile substantiality of pile fabric and pile fastness. 4. In estimation of pile exclusion rate, it is proper to make use of air permeability and measuring value of thickness.

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Microscopic Investigation on the Draped Helmet Structure Made of Carbon Fabric Composite (직물 탄소섬유 복합재료 드레이핑 헬멧의 미소변형에 관한 연구)

  • 장승환
    • Proceedings of the Korean Society For Composite Materials Conference
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    • 2002.10a
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    • pp.20-23
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    • 2002
  • In this paper, various tow parameters such as equivalent tow thickness, amplitude of longitudinal tow and tow intervals were investigated and compared with each other by using microscopic observation to find out the exact deformation patterns between both directions of the fabric structure (Longitudinal and Transverse Directions). Specimens for the observation were taken from draped helmet which is made of fabric composite (Five Harness Satin Weave). From the observation results, it was found that there are different deformation pattern between tow directions and effect of geometric condition on the deformation of the fabric materials during draping process was verified.

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A Study on the Thermal Comfort to the Weight Reduction Rate and Fabric Structural Parameters of PET Fabrics (PET직물의 감량율과 직물구조인자에 따른 열적 쾌적성 변화에 관한 연구)

  • 이희준;이민수;김승진;조대현;김태훈
    • Journal of the Korean Society of Clothing and Textiles
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    • v.22 no.7
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    • pp.816-825
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    • 1998
  • This study surveys the thermal property and air permeability to the weight reduction rate of PET fabrics. For this purpose, 12 kinds of satin and 18 kinds of plain weave fabrics are prepared with change of the physical properties such as weft yarn count, t.p.m. and density. The weight reduction rate was 0%, 12%, 25% and 30%. The warm/cool feeling(Qmax), thermal insulating value(T.I.V.) and thermal conductivity(K) were measured by KES-F7 System and discussed in relation with the weight reduction rate, weft yarn linear density, t.p.m., weft density of fabric and weave structure.

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