• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.453-456
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• 2005

Significance verification of electric fabric compared with existing electrode is very useful for the wearable and ubiquitous healthcare. In this paper, we verified the significance between Ag/AgCl electrode and electric fabric in dry-normal condition through heart rate variability analysis. We can find 98 % or more similarity about low frequency and high frequency which is important parameter for the heart rate variability analysis between two different electrodes in experiment. From this result, we confirmed that the power spectral density of low frequency, high frequency component from the electric fabric has high similarity compared with the result of heart rate variability from Ag/AgCl electrode in dry-normal condition.

• 한국염색가공학회지
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• 제10권2호
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• pp.1-7
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• 1998

In this study, PET fabric was hydrolyzed with NaOH using the Tank m/c and Liquor-flow m/c to determine the alkali hydrolysis properties of PET fabrics. The results were as follows ： The weft density and tensile strength of PET fabrics hydrolyzed with Liquor-flow m/c were higher than those hydrolyzed with Tank m/c in case of less than 10％ of weight loss. However, above 10％ of weight loss, reverse phenomenon was showed. K/S value of hydrolyzed PET with Liquor-flow m/c was higher than that with Tank m/c above 10％ of weight loss. It was observed that the micropores of PET surface were collapsed due to physical force(abrasion and collision) during hydrolysis. Bending rigidity of hydrolyzed PET fabric was about 32％ and 40％ of bending rigidity of warp and weft direction of untreated fabric at 7％ of weight loss, respectively. Above 7％ of weight loss, decrease rate was decreased.

• 한국의류학회지
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• 제23권5호
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• pp.737-744
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• 1999

Underwear made of plain and 1$\times$1 rib-knit cotton fabric were laundered to evaluate the change of the size and the tensile properties. For laundering pulsator and drum washers were used. After 30 washing cycles the amount of shrinkage and the extension were different with washer types. Underwear laundered by the drum type was shrunken in the neck line armhole line and hem line were extended and the bodice width and side length were shrunken,. Tensile strength of the knitted fabric was not decreased through repeated washings because the fabric density was increased. But it was confirmed by SEM that the surface of the fiber was damaged by washings.

• 한국컴퓨터정보학회논문지
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• 제17권9호
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• pp.149-156
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• 2012

본 논문에서는 전기습윤(Electrowetting) 디스플레이의 효율적인 생산을 위해 섬유형식의 전극들을 제안하고, 이러한 방법을 이용한 전기습윤 셀 구동형 플렉서블 디스플레이의 소스 드라이버 설계방법을 제안하였다. 전기습윤 셀 매트릭스는 임프린팅 방법에 의하여 PET 등의 Substrate 위에 구성하고 셀 매트릭스 사이의 간격에는 드라이버섬유, 습윤 전극섬유와 전도성 섬유를 가로와 세로로 배치하고, 교차점에는 전기적 접점을 구성하여 전기습윤 셀매트릭스가 구동되도록 하였다. 기존의 소스 드라이버에서는 각 채널당 R/2R방식의 DAC을 사용하므로 사용되는 소자의 수가 증가하여 집적도가 저하되는 단점이 있다. 따라서 본 논문에서는 채널당 소자의 수를 감소시켜 집적도를 높이고 비용을 절감할 수 있는 저 전력 소스 드라이버 설계방법을 제안하고 VHDL 프로그램을 이용한 시뮬레이션으로 타당성을 검증하였다.

• 감성과학
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• 제8권4호
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• pp.345-354
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• 2005

본 연구는 직물구조인자인 위사밀도와 직물의 조직을 변화시켜 시직한 면직물을 이용하여 역학특성 및 태의 변화를 KES-FB System을 이용하여 측정하였다. 그 결과 위사밀도가 증가할수록 굽힘특성 및 전단특성이 증가하는 것으로 나타났고, 위사밀도의 변화에 따른 역학특성치 중 굽힘 및 전단특성의 값은 평직이 높게 나타났으며, 인장특성, 압축특성 그리고 표면특성의 값은 조직 및 밀도에 크게 영향을 받지 않는 것으로 나타났다. 한편, 위사밀도 변화에 따른 의복착용성능 중 WC/T, MMD/SMD를 제외한 B/W 및 2HG/G, 2HB/B, 2HB/W, W/T, 그리고 WC/W는 위사밀도에 영향을 받는 것으로 나타났다. 위사방향의 직축은 굽힘특성, 전단특성, 압축회복도(RC), 표면거칠기(SMD), 태와 의복착용성능에 높은 상관을 보이는 것으로 나타났다. 그리고 Tightness는 굽힘특성, 전단특성, 압축특성 그리고 표면 마찰계수와 높은 상관을 보였고, 기본태 및 T.H.V., 의복착용성능에도 높은 상관이 있는 것으로 나타났다.

• 한국의류학회지
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• 제33권5호
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• pp.701-710
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• 2009

This study was conducted to develop excellent insole with good thermal insulation using new materials. We investigated that aerogel/fiber composite can be used as padding materials of shoes by comparing surface shape, moisture regain, water vapor permeability, thermal insulation and compression rate of insole materials tried with nonwoven fabric padding materials and insole sold in market. The results are as follows. Surface shapes were shown that the most appropriate material for sealing aerogel/fiber composite was high density fabric as per size of particle of aerogel. Moisture regain of aerogel/fabric composite was better than nonwoven fabric padding samples. However, when compared to insole sold in market, its moisture regain was worse than those of insole merchandises. Water vapor permeability was higher in material padded with nonwoven fabric than materials padded with aerogel/fiber composite in all three kinds of sealing fabrics. Thermal conductivity of aerogel/fabric composite was lower than nonwoven fabric material regardless of sealing fabrics. Thermal insulation of aerogel/fiber composite was higher than padding material of nonwoven fabric regardless of sealing fabrics. Compression rate of nonwoven (SP1) was higher than that of aerogel/fiber composite (SP2). Compressive elastic recovery rate of SP1 was also higher than that of SP2, which its compression rate and compressive elastic recovery rate were both poor. As the above result, ultra porous aerogel/fiber composite were proved to be material of good thermal insulation with lower thermal conductivity and also compression rate was proved to be low. Therefore, we can say that aerogel/fiber composite have high possibility to be used as insole materials for cold winter shoes requiring good thermal insulation protection.

• 패션비즈니스
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• 제23권2호
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• pp.77-88
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• 2019

One way of appling 3D printing to garments is through the combination of 3D polymer filaments in textile fabrics. it is essential to understand the interface between the polymer and the 3D composite fabric in order to enhance the adhesion strength between the polymers and the peeling strength between the fabric and the polymer. In this study, the adhesion of composite printed specimens using a combination of fabric and polymers for 3D printing was investigated, and also the change in adhesion was investigated after the composite fabric printed with polymers was subjected to constant pressure. Through this process, the aims to help develop and utilize 3D printing textures by providing basic data to enhance durability of 3D printing composite fabrics. The measure of the peeling strength of the composite fabric prepared by printing on a fabric using PLA, TPU, Nylon polymer was obtained as follows; TPU polymer for 3D printing showed significantly higher peel strength than polymers of composite fabric using PLA and Nylon polymer. In the case of TPU polymer, the adhesive was crosslinked because of the reaction between polyurethane and water on the surface of the fabric, thus increasing the adhesion. It could be observed that the adhesion between the polymer and the fiber is determined more by the mechanical effect rather than by its chemical composition. To achieve efficient bonding of the fibers, it is possible to modify the fiber surface mechanically and chemically, and consider the deposition process in terms of temperature, pressure and build density.

• 한국의류산업학회지
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• 제13권6호
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• pp.990-995
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• 2011

This study analyzed the effects of the knit stitch type, fiber composition, and yarn thickness on the mechanical properties of knitted fabric. The results were as follows: The course density was the highest in the case of the rib stitch. On the other hand, the wale density was the highest in the case of the float stitch. The thickness was the highest in the case of the rib stitch. The same results were obtained even for different fiber compositions and yarn thicknesses considered in this study. The burst strength of wool knit fabric was higher than that of A/W knit fabric. The stiffness was the lowest in the case of the plain stitch. The same results were obtained even for different fiber compositions and yarn thicknesses. The pilling properties were excellent for all knit stitches, fiber composition, and yarn thicknesses as pilling degree : 5. The air permeability decreased in the following order : rib > plain > float stitch. The same results were obtained even for different fiber compositions and yarn thicknesses. The heat retention rate decreased in the following order : rib > float > plain stitch. The same results were obtained even for different fiber compositions and yarn thicknesses.

• 패션비즈니스
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• 제14권5호
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• pp.102-111
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• 2010

The pegging board planning for jacquard weaves was carried out to express a big enough design in 60 inch width. 20 Kinds of fabrics were fabricated by a jacquard loom with a warp density of 168 yarns/inch, a weft density of 100T, and a weight of 180-220g/$m^2$ or 250-300g/$m^2$. The result of sanitary test about Escherichia coli, Staphilococcus aureus, Klebsiella pneumoniae and Salmonella typhimurium showed a sterilizing power of over 90% after cultivating for 30, 60, 120 minutes. And also its property was sustained after laundrying 20 times. The flame retardant properties showed a good result and complied with the flame retardant criteria of KOFEI 1001. Abrasion, laundry and light fastnesses of flame retardant fabrics showed 4-5 grades. The fabrics manufactured from 30's fiber appeared a little fluff and pill on the fabric. Therefore, they need a shearing process after finishing all processes to decrease the fluff or pill on the fabric. The flame retardant fabric manufactured from 30's and 40's fiber showed increased strength and elongation after soaping and dyeing finishing because the fabrics were shrunk.

• 복식
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• 제51권7호
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• pp.35-47
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• 2001

This is a research about the fabrics attached to the remains of the Okjeon old tomb which was built around the early 5th century to the mid of the 6th century. Most of the remains have one kind of fabric attached to them, but there are cases where different sorts of fabrics are attached, where one kind is attached in layers, and there are also cases where the layer is made of different types of fabrics. Although they are made of warps and wefts with no twists, there can be an S twist on the weft or on both the warp and weft, and only one Z twist can be seen. There are 81 fabrics of plain weaved, one of transformed plain weaved and five 4-end complex gauze in these remains. The sparsest plain weaved fabric has the density of 7.4 strands/cm, while the most dense fabric has the density of 148.2$\times$129.1 strands/cm and 0.046$\times$0.061/mm thickness in thread. All the fabrics observed by SEM are hemp except one silk.