• Title/Summary/Keyword: Weaving

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A Study on Arc Sensor for Weld Seam Tracking by Using Fuzzy Control (퍼지제어를 이용한 용접선 추적용 아크센서에 관한 연구)

  • 조시훈;김재웅
    • Journal of Welding and Joining
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    • v.13 no.1
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    • pp.156-166
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    • 1995
  • Experimental models which are able to determine the deviation between weld line and weaving center by measuring the weld current during welding were proposed for the gas metal arc welding process. The models were used for developing a weld seam tracking system which controls the weaving speed of a welding torch. However, it was revealed that the tracking result of the system is affected by the welding conditions. Thus an arc sensor system was developed by using fuzzy control approach for overcoming the difficulty of modelling the nonlinear process. The rule base and parameters of the fuzzy control system were determined on the basis of the results of experiments. This fuzzy control system has shown the successful tracking capability for the wide operating range of welding conditions.

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Effects of the Air-Jet Loom Characteristics on the Hand Properties of the Sensitive Mixture Fabrics (Air-jet 직기 특성이 감성 교직물의 촉감에 미치는 영향)

  • Kim, Seung-Jin
    • Textile Coloration and Finishing
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    • v.20 no.6
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    • pp.63-68
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    • 2008
  • The hand of the sensitive mixture fabrics was analysed and discussed with measured mechanical properties of two kinds of woven fabrics according to the characteristics of air-jet loom. The 16 mechanical properties such as tensile, bending, shear, compression and surface were measured using KES-FB system and their differences of the mechanical properties between domestic and foreign looms were analysed with the deviation according to the position of the specimen. And also these mechanical properties according to the domestic and Japan air-jet looms were analysed and discussed with warp and weft insertion tensions during weaving. This research is aiming to make a data base of fabric mechanical properties and, these analysed data are given to weaver as a basic research data related to the effects of loom characteristics to the sensitive mixture fabrics required from weaving fields.

A Study on the Development of Wooden Furniture Adopting Lamtae Lacquer Technique (남태 칠 기법을 이용한 목 가구 개발에 관한 연구)

  • Kim, Dong Kooi
    • Journal of the Korea Furniture Society
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    • v.28 no.1
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    • pp.27-35
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    • 2017
  • Wooden artifacts are generally manufactured by lacal materials with cultural characteristics. Bamboo crafts province In recent years, production decreased due to products using resin and new materials, and in particularm the traditional bamboo craftsmanship is in a situation of extinction. Among the techniques of bamboo craftsmanship, Lamtae lacquer technique which lacquers on bamboo crafts made of piece bamboo and weaving pattern is applied to wooden craft, and the purpose of this study was to develop the products that can be utilzed in the modern residential space, and to make the skill of wood crafts using bamboo be developed and spread the prototype was made of traditional bamboo acts and crafts, furniture made of piece bamboo and weaving pattern, and wooden artifacts such as stationary goods and lighting.

Environmentally-Sustainable Single End Slashing

  • Ok, Hyun-Young;Park, Heung-Sup;Carr, Wallace;Park, Soo-Min
    • Proceedings of the Polymer Society of Korea Conference
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    • 2006.10a
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    • pp.376-376
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    • 2006
  • The process of weaving fabrics with high levels of tension and abrasion can cause damage to the yarn threads. To protect threadlines during the process, a protective polymer is coated on the surface of the yarns prior to weaving. This application process is known as slashing. The current slashing system is incompatible with today's demand activated manufacturing strategies. Methods of improving the uniformity of polymer coating application were studied, and several applicators were designed and evaluated. Prewetting of the threadlines before coating application was shown to greatly improve coating uniformity. The objective of the research is to design a single-end slashing process that is environmentally friendly and will improve productivity and flexibility.

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A DEVELOPMENT OF WOOL FABRICS FOR NAME KOREAN Wool Fabrics From Ancient To Koryo (명각으로 본 모직물의 개건 -고대부터 고려시대까지-)

  • 박순지;이춘계
    • Journal of the Korean Society of Costume
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    • v.21
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    • pp.19-30
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    • 1993
  • There are record that ancient Korean WOOl fabrics male from sheep, camel, rabbit. bear, horse. calile, raccoon dog, fox and so on. Wool fiber fabriher were also reported Kye, Gal, China, Tap Dung, Kuyu anul ram. These wool fabrics wre named amongling to their fineness and weaving method in the fabric. Technology of wool fabric weaving was developed and from Sam Kuk dynasties to to Koryo Dynasty wool fabrics were reported to weave and trade to China, Japan and Arabia. These fabrics were mainly used as clothes, rugs or blankets. In Koryo Dynasty, especially Kye Kurn was used for trading goods to China. There is another record that two thousand sheep, camels offord Koryo by Yo and Kum Dynasty. In this study, the characteristics of Korean wool fabrics will be disscussed from the literature survey of the relevant references.

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A Study of Rotating Arc Sensor Using Fuzzy Controller for$CO_2$ Arc Welding ($CO_2$ 아크 용접에서 퍼지 제어기를 이용한 회전 아크센서에 관한 연구)

  • Choi Youngsoo;Park Hyunsung
    • Transactions of the Korean Society of Machine Tool Engineers
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    • v.13 no.5
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    • pp.110-117
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    • 2004
  • In automatic welding process using a robot, seam tracking is one of the important parts. Sensor for seam tracking is divided broadly into two categories as non contact sensor and contact sensor. The arc sensor is one of the non contact sensors, and it can be applied in weaving arc and rotating arc welding process. In such the arc sensors, rotating arc sensor can be applied to high speed welding over tens of Hz. The decrease of self regulation by high rotating speed causes to improve accuracy and response of sensor. In this study, fuzzy controller was used to track the seam for the $CO_2$ arc welding which had unstable arc. It could be shown that the rotating arc sensor was better than the weaving arc sensor.