• Title/Summary/Keyword: weaving

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Effect of the Projectile and the Air-jet Weaving Machine Characteristics on the Physical Properties of Worsted Fabrics for Garment(II) - Physical Properties of Worsted Fabrics for Garment - (프로젝타일과 에어제트 직기특성이 의류용 모직물 물성에 미치는 영향(II) - 의류용 모직물 물성변화 -)

  • Kim, Seung-Jin;Jung, Gee-Jin
    • Fashion & Textile Research Journal
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    • v.7 no.1
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    • pp.106-110
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    • 2005
  • This research surveys the mechanical properties of worsted fabrics for garment according to the loom characteristics and fabric positions with relation to the warp and weft weaving tensions on the projectile and air-jet looms, which is previously surveyed in the 1st paper. For this purpose, the grey fabrics are processed in dyeing and finishing processes. The mechanical properties of the finished fabrics are measured and discussed with relation to the warp and weft weaving tensions of projectile and air-jet looms and the variations of the fabric mechanical properties according to the fabric positions are also surveyed for investigating the homogeneity of the tailorability and fabric hand.

Effects of Rapier Weaving Machine Characteristics on the Physical Properties of Worsted Fabrics for Garment (II) -Physical Properties of Worsted Fabrics for Garment- (래피어 직기 특성이 의류용 모직물 물성에 미치는 영향 (II) - 의류용 모직물 물성 변화 -)

  • Kim, Seung-Jin;Kang, Ji-Man
    • Fashion & Textile Research Journal
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    • v.6 no.6
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    • pp.772-777
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    • 2004
  • This research surveys the mechanical properties of worsted for garment according to the loom characteristics and fabric positions with relation to the warp and weaving weft tensions on the 3 types of rapier looms, which is previously surveyed in the 1st paper. For this purpose, the grey fabrics are processed in dyeing and finishing processes. The mechanical properties of the finished fabrics are measured and discussed with relation to the warp and weft weaving tensions of 3 types of rapier looms and the variations of the fabric mechanical properties according to the fabric positions are also surveyed for investigating the homogeneity of the tailorability and fabric hand.

Effect of Processing Conditions of ITY on the Physical Properties of Compound Yarn for New Synthetic Fabrics(I) (ITY 제조공정조건이 신합섬용 복합사의 물성에 미치는 영향(I))

  • 이상정;김승진;한원희;노태철
    • Textile Coloration and Finishing
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    • v.12 no.5
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    • pp.273-279
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    • 2000
  • Interlace textured yarn was developed in order to increase weaving process efficiency. Today, interlace texturing is very useful method of manufacturing the high added value compound yarns for new synthetic fabrics. In this research, new silky type high added value compound yarns were. manufactured by interlace texturing technology and tested their properties. The object of this research is to investigate the relationship between interlace textured yarn properties and processing parameters that is air pressure, yarn tension and take-up speed. The original filament yarns used were TTD(Thick & Thin Semi-Dull) 110d/72f and SCD(Semi-Dull Cation Dyeable) 75d/36f. 27 specimens were manufactured and tested for their physical properties-nip density, tensile properties, multi-step shrinkage test and surface structure by SEM. The air pressure was main process condition to change properties of interlace textured yarns. And interlace textured process had influence on weaving preparation process, weaving, knitting and so on. It has some influence on shrinkage properties of dyeing and finishing processes.

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Condition Analysis of Breakdown Occurrence at Freeway Weaving Section (고속도로 엇갈림구간 교통와해 발생 여건 분석)

  • Kim, Sang-Gu;Kim, Young-Chun
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.6 no.3
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    • pp.57-66
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    • 2007
  • Weaving is defined as the crossing of two or more traffic streams traveling in the same general direction along a significant length of highway without the aid of traffic control devices. Compared with other freeway sections, perturbation is easy to happen at weaving section. Because there are a lot of lane-changing maneuvers at the weaving section, traffic is subject to turbulence in excess of that normally presents on freeway basic section. This turbulence causes operational problems and its impact must be considered. The purpose of this paper is to perform a basic study on flow characteristics by lane, which can be achieved through analyzing breakdown phenomenon in the microscopic approach. The study made use of data derived from the aerial photography for the microscopic analysis. This research produced the 30-second interval data such as flows, speeds, and densities for the macroscopic analysis and derived the vehicular data to draw time-space diagram for the microscopic analysis. The paper analyzed the traffic characteristics using flows, speeds and densities variation and investigated the conditions of breakdown occurrence with the time-space diagrams. The breakdown phenomenon was identified at weaving section and the propagation from free flow to synchronized flow was observed in this study. In the future, the findings help develop the traffic operational algorithm to manage the traffic congestion under ubiquitous circumstance since the conditions of breakdown Phenomenon can be understood more.

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Development of Seam-Tracking system for FCAW Arc Sensor (FCAW 용접용 용접선 추적 시스템 개발(아-크센서))

  • 권순창;최재성;장낙영
    • Proceedings of the KWS Conference
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    • 1994.10a
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    • pp.134-137
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    • 1994
  • In this study, The mean weld current is used to correct depth direction, and weight-value, specially devised to check right-left deviation by placing more weight on the left- and right-most part of weld current during weaving, to correct weaving direction. The methodology of “design of experiments” was introduced to find out dorminant weld parameters affecting these for values.

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Bezier Spline을 이용한 Weaving Motion 알고리즘을 적용한 선체 블록 내 용접 로봇의 시뮬레이션

  • 정원지;송태진;김기정;김대영;김재량
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2004.05a
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    • pp.213-213
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    • 2004
  • 최근 작업장에서 용접을 위해 로봇을 도입하는 사례가 많다. 단순한 장소뿐만 아니라 선체 블록 내와 같은 제약된 장소에서도 로봇을 많이 사용한다. 그렇기 때문에 로봇의 다양화와 고기능화가 더욱더 요구되고 있다. 로봇의 용접을 위한 위빙 궤적은 용접 품질과 생산성에 큰 영향을 주기 때문에 중요하다. 그러나 로봇을 도입하여 열악한 작업 환경에서 유연한 동작을 적용하기에는 말은 시행착오와 비용이 소요된다. 그래서 용접 로봇의 도입 이전 단계에서 위빙 궤적이 작업 환경에 맞게 로봇에 적용되는지 확인하는 것이 필요하다.(중략)

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WOVEN g-FRAMES IN HILBERT C-MODULES

  • Rajput, Ekta;Sahu, Nabin Kumar;Mishra, Vishnu Narayan
    • Korean Journal of Mathematics
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    • v.29 no.1
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    • pp.41-55
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    • 2021
  • Woven frames are motivated from distributed signal processing with potential applications in wireless sensor networks. g-frames provide more choices on analyzing functions from the frame expansion coefficients. The objective of this paper is to introduce woven g-frames in Hilbert C∗-modules, and to develop its fundamental properties. In this investigation, we establish sufficient conditions under which two g-frames possess the weaving properties. We also investigate the sufficient conditions under which a family of g-frames possess weaving properties.

Unit Mass Estimation and Analysis from Textile Spinning/Weaving Manufacturing Facility Nearby Nakdong River Basin (낙동강 수계에서 제사방적제조 업체에 대한 공정별 원단위산정 및 분석)

  • Lee, Hongshin;Son, Gontae;Gu, Jungeun;Konboonraksa T.;Lee, Hongtae;Lee, Seunghwan
    • Journal of Korean Society of Water and Wastewater
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    • v.22 no.5
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    • pp.541-550
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    • 2008
  • In this investigative study, the unit mass discharge for the major water quality parameters such as flowrate, SS, BOD, CODmn, CODcr, TN, TP from textile spinning/weaving industry nearby Nakdong river basin was estimated. To represent the respective industries, three companies from hundreds of textile spinning/weaving industries located in Nakdong river basin was carefully selected based on its manufacturing goods, flowrate and location for the estimation of unit mass discharge based on unit operation and process. There was a drastic decrease of unit mass discharge estimation between influents and effluents of water quality parameters, which represents the removal capacity of wastewater treatment plant. With the advent of new regulation on the imposed payment proportional to the total amount of pollutants discharge into the water body, the concept of cleaner production technology should be employed in the unit operation/process in wastewater treatment plant as well as textile manufacturing procedure to minimize the levy on the pollutants discharge. Unit mass discharge estimations of unit process (estimated in this study) in major water quality parameters (SS, BOD, COD, TN and TP) based on land were similar to those of composite process (estimated by National Institute of Environmental Research). But the unit mass discharge estimations of unit process in BOD and CODmn based on total sale were much higher than those of composite one while in SS, TN and TP similar to each other. For the detailed estimation of the imposed payment, unit mass estimation based on unit process should be further emphasized.

Development study of New Weaving Structures by Korean Traditional Patterns - Focus on Tteoksal Patterns - (한국 문양을 활용한 직물 구조 디자인 개발 - 떡살무늬를 중심으로 -)

  • Yoo, Hyun-Ah
    • The Journal of the Korea Contents Association
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    • v.8 no.12
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    • pp.190-197
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    • 2008
  • Weaving design which is to be designed based on the machine words threading and treading is characterized by its strong limitation of expression. The concept of design has been set based on the patterns on the wooden rice-cake mold which arechosen from many Korean traditional patterns since the expressions of patterns limited by the wooden rice-cake mold is easy to be grafted upon each other. Particularly, literal patterns and geometrical patterns contain religious desire and wishes that are generated from man's fear and wonder about Nature rather than from the pursuit of beauty which is general characteristics of patterns. Based on these images, the twill technique, especially threading of Sally Nielson's rosepath which is easy in formal expressions is used to design Korean style patterns into the weaving structure. It is hoped that this study will provide an opportunity to introduce Korean style patterns to the weavers of the world and that the weaving designs will actively be utilized in the Korean industries so that they can acquire high value-added assets and commercialize our superior culture, thus being of great help to developing our cultural industr.