• Science of Emotion and Sensibility
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• v.14 no.4
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• pp.495-502
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• 2011

The plastic optical fiber has been previously known to have the limits in fabrication and care, due to its lack of flexibility and durability. Recently, an innovative technology of 'water-resistant & flexible optical fiber', in which the surface of etched POF(i.e., plastic optical fiber) is to be coated with a type of synthetic resin, has been developed. In this study, the post-treated POF-based flexible textiles were evaluated in terms of luminance, physical visibility and perceived visibility, according to the fabric lengths and colors of the light source. The POF-based flexible textile with 10cm fabric length and green light source appeared to show relatively higher illuminating effects. The maximum distance for perceived visibility of the POF-based flexible textiles was found to be 100m. Therefore, the results of this study are expected to be utilized as a fundamental for the further studies to develop the digital color clothing with application of POF-based flexible textile.

• Aerospace Engineering and Technology
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• v.9 no.2
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• pp.73-79
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• 2010

In this study, the equivalent elastic modulus of flexible textile composites was predicted by nonlinear finite element analysis. The analysis was carried out considering the material nonlinearity of fiber tows and the geometrical nonlinearity during large deformation using commercial analysis software, ABAQUS. To account for the geometrical nonlinearity due to the large shear deformation of fiber tows, a user defined material algorithm was developed and inserted in ABAQUS. In results, nonlinear stress-strain curve for the flexible textile composites under uni-axial tension was predicted from which effective elastic modulus was obtained and compared to the test result. The effective elastic moduli were calculated for the various finite element models with different waviness ratio of fiber tow.

• Proceedings of the Korean Fiber Society Conference
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• 1998.10a
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• pp.369-372
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• 1998

직물은 다른 소재들에 비하여 약한 외력에도 매우 쉽게 변형되고, 또한 다시 회복하는 성질을 가지고 있어서 인체에 직접 접촉하는 의복용으로 가장 적합한 유연성 소재로서 인류 역사와 함께 이용되어져왔다. 하지만 사용 중 발생하는 구김이나, 봉제 시에 발생하는 심퍼커 등은 직물이 가진 점탄성에 기인하는 현상으로서, 그 외관상의 가치를 저하시킨다. 따라서 구김이나 심퍼커를 억제하여 직물의 형태적 안정성을 획득하려는 노력들이 계속되어져 왔다. (중략)

• Proceedings of the Korean Fiber Society Conference
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• 2003.04a
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• pp.130-131
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• 2003

산업용 직물은 다른 건축재료에 비해 유연성이 크고 재료무게에 비해 카버하는 면적이 넓어서 장기적인 고정 건축물이 아닌 경우에 그 이용도가 늘어나고 있다. 이러한 산업용 직물의 주 기능은 예정 사용기간 동안 직물 양면사이의 압력을 견디는 일이 주 부하 모드이며 이 이차원구조를 유지하는 부분은 이 구조를 잡고 있는 부분이다. 그러나 직물의 일부가 파손되어 압력차를 유지하지 못하면 공압을 이용한 건축물의 순간적인 파괴로 연결된다. (중략)

• Science of Emotion and Sensibility
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• v.13 no.2
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• pp.327-336
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• 2010

The purposes of this study are to evaluate mechanical properties and sensibility of tencel jacquard fabrics treated with ginkgo biloba extract and silicon softener, and to contribute to the research and development of the bedclothes made of the tencel jacquard fabrics. Mechanical properties and objective fabric hand evaluation were measured by using KES-FB system. Subjective sensibilities such as sensory, touch, and purchasing preference were estimated by using blind field test. The tensile properties such as EM, WT, and RT of tencel jacquard fabrics treated with ginkgo biloba extract and silicon softener showed increase. Bending properties and shear properties were decreased, but compression properties were increased compared to untreated fabric. With ginkgo biloba extract and silicon softener treatment, thickness and weight were increased. Therefore, tencel jacquard fabrics became more stretchable, softer, and bulkier than untreated fabrics. Consequently, THV of tencel jacquard fabrics treated with ginkgo biloba extract and silicon softener were increased. When fabrics were treated sequentially with ginkgo biloba extract and silicon softener, fabrics were estimated softer, more flexible, and bulkier than untreated fabrics. Also, tencel jacquard fabrics treated with ginkgo biloba extract and silicon softener were estimated to have good touch and preference.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.36 no.8
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• pp.734-739
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• 2008

In this study, the nonlinear mechanical behavior of flexible textile composites was predicted by two-step analyses: micromechanics and mesomechanics. The effective material properties for fiber tows of flexible textile composite lamina were calculated in micromechanics, which were then used to calculate the effective tensile stress-strain curve of flexible textile composites in mesomechanics. A user defined material algorithm was developed and inserted in ABAQUS to account for the geometric non-linearity due to the large rotation and shear deformation of fiber tows in mesomechanics. It was found that the stress-strain behavior of flexible textile composites exhibited significant non-linearity. The effective tensile modulus agreed well with the test result.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.4 no.1
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• pp.42-46
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• 2003

Liquid PVC, which is used widely as fiber coating, has brilliant non-luster effect, but it decreases flexibility of coated fiber surface. We used liquid silicone rubber in elastomer series as a coating material to alleviate this problem. We have conducted the former liquid PVC processing and used pressure of roller and preliminary hardening of processing. In this experiment, We measured 70 degree of hardness, 10.3 MPa of tensile strength and 200fs of tensile elongation of Liquid PVC-coated plastic fiber. We measured 40 degree of hardness, 5.1 MPa of tensile strength and 460% of tensile elongation of Liquid silicone PVC-coated plastic fiber. Therefore, Without the second process, Liquid silicone rubber coating increased non-luster effect and flexibility of plastic fiber surface more than Liquid PVC coating.

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2003.08a
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• pp.53-94
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• 2003

편성물은 느슨한 루프에 의해 구성되어 있으므로, 직물에 비해 신축성이 커서, 체형에 밀착되며, 인체의 움직임에 따라 쉽게 움직인다. 그러나 높은 신축성 때문에 편성물을 재단할 때 결을 벗어나면서 자르기 쉽다. 보통 직물의 신도는 10-20%이나 위편성물은 100-200%, 경편성물은 40-100%의 신도를 나타낸다. 편성물의 높은 신축성은 신축성과 함께 유연성을 주지만, 착용과 세탁 후의 외관을 해치게 되는 결과를 낳을 수도 있다. (중략)

• Proceedings of the Costume Culture Conference
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• 2003.09a
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• pp.32-33
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• 2003

편성물은 직물에 비하여 신축성, 함기량, 유연성, 방추성 등이 우수하여 스포츠웨어와 캐주얼웨어에 수요가 크게 증가하고 있어서, 편성포의 외관(감각적 성능)과 쾌적성능이 매우 중요한 요소로 대두되었다. 특히 위편의 경우에는 생산공정이 간단하면서도 다양한 조직으로 편성할 수 있어 다양한 용도로 활용이 넓어지고 있는 추세이다. 그러나 이러한 편성포의 물성들은 편성구조나 편성조직에 따라 변화한다고 알려져 있으나, 직물에 비교하여 편성물의 물성에 대한 구체적이고도 체계적인 연구는 아직까지 미흡한 실정이다. (중략)

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2001.05a
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• pp.82-87
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• 2001

본 연구에서는 PET 직물의 물성개선과 품질의 향상을 위해 직물 제조 공정 중 제직준비공정인 1TY, P/W, 2-FOR-1공정에서 여러 가지 공정인자의 변화를 주어 염색·가공 공정을 거친 최종 11가지 직물의 역학적 특성치 및 각 공정별 시료의 물성을 측정하여 의류의 감성특성은 Handle, 의복성능 및 봉제성을 평가하여 직물 제조 공정특성이 의류 감성에 미치는 영향에 대해 분석하였다. 그 결과 1TY, P/W, 2-for-1공정에서 균일하고, 안정된 장력으로 제조한 직물은 신축성 및 drape성이 장력이 과다하게 주어진 직물보다 우수하고, 의류봉제시 신장성이 양호한 봉제 범위를 가져 의복 착용시 감성면에서 부드럽고 쾌적한 성능을 가진다. 그리고 공정에서 고장력, 고속의 spindle 회전은 사물성 및 직물의 물성변화를 야기시키고 교략강도의 불안정성으로 최종 직물에서 유연성과 탄력성 및 volume감이 떨어지는 의류촉감을 가지며 또 stiff한 의류 감성을 나타냄으로서 의류용 소재로는 부적당함을 확인하였다.