• Title/Summary/Keyword: Weaving method

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Development of Multi-pass Welding Method for Lifting Lug by Robot Weaving (로봇 위빙에 의한 리프팅 러그 다층 용접법 개발)

  • Kim, Young-Zoo;Kim, Kang-Uk;Kim, Suk-Hyoung;Kang, Sung-Won;Kim, Soo-Ho
    • Journal of Welding and Joining
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    • v.25 no.6
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    • pp.44-52
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    • 2007
  • A welding process of a lifting lug for lifting heavy objects is one of the important welding processes directly related to the safety in shipbuilding. Welding a lifting lug is done in the manually and takes about forty minutes. Working environment for the lifting lug welding is very poor due to an radiant heat and a harmful fume. The purpose of this study is to develop methods of multi-pass welding using the lifting lug welding robot system. This study shows robot welding methods to achieve proper corner, straight and connection welding and an effectiveness of application.

A Study on Air-flow Dyeing Machines ―A Comparision of Characteristics of the Polyester F fabrics Dyed with Green-flow Dyeing M/C and Luft-roto Dyeing M/C― (에어―플로우 염색기에 관한 연구(I) ―그린 플로우와 루프트―로토 염색기의 폴리에스테르 염색결과 비교―)

  • Seo, Mal Yong;Lee, Suk Young;Lee, Kwang Su;Kim, Hyun Kuk;Lee, Young Il
    • Textile Coloration and Finishing
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    • v.7 no.4
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    • pp.1-7
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    • 1995
  • A new dyeing M/C, called Green-flow was developed in this study. A new M/C was applied to mixed air flow method combined aerodynamic technology to fabric speed power. The polyester fabric was dyed of beige color with a new M/C and Luft-roto dyeing M/C made by Thies Company(German) with the same dyeing condition (liquor ratio=1 : 3.5, Fabric speed = 450yds/min.) for comparision. The results showed that the color fastness to dye and drapability of the fabrics dyed with both M/C were almost the same and the levelness and T.H.V of the fabrics dyed with Greenflow were better than those dyed with Luft-roto M/C. In addition, it is found that the fabric speed of 502yds/min was a suitable for both M/C.

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A Study on the Method of Oeyeokki and Joongkit in Earth Wall of Government Constructions in the period of Chosun Dynasty (조선시대 관영건축의 벽체에 사용된 중깃(中衿)과 외엮기 기법에 대한 연구)

  • Lee, Seung-Hwan;Jang, Hun-Deouk
    • Journal of architectural history
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    • v.28 no.4
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    • pp.27-36
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    • 2019
  • The traditional earth wall structure consists of a Joongkit(a small reinforcing post inside a wall) and a Oe(a miscellaneous tree, rendered laths) based on the space between the columns and applying the soil. The members who act as the base layer before applying soil used joongkit, sakmok, and oemok, which are known to correspond to the current joongkit, gasisae, and lath strips. This study was designed to understand the following through an analysis of the ancient texts, such as uigwe. Through a study on the usage and specifications of joongkit recorded on the uigwe, I wanted to reveal that joongkit is a material that has different specifications, functions, and installation techniques from current joongkit. The purpose of this study was to present the differences and technical features of the components of use for two types of oeyeokki technique of traditional wall. In addition, the items to be considered at the actual cultural heritage repair site were reviewed in the restoration of the earth wall weaving technique.

A study on the process technology for controlling the shape and physical properties of melt-blown non-woven (멜트블로운 부직포의 형태와 물리적 특성을 제어하는 공정기술에 관한 연구)

  • Jae-Seok Jeong;Mikyung Kim;Jung Woo Ko
    • Journal of the Korean institute of surface engineering
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    • v.56 no.5
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    • pp.309-319
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    • 2023
  • Non-woven fabric is a textile product made by spinning thermoplastic polymers without manufacturing processes such as stretching, doubling, twisting, weaving, and knitting to form a sheet-shaped web in which fibers are tangled with each other, and then combining them by mechanical and physical methods. In addition, the non-woven fabric manufacturing process has various raw material choices, high productivity, so it is a textile manufacturing technology that can have various uses and increase added value. This study was conducted to control the shape and physical properties of products by improving the manufacturing method of melt-blown non-woven fabrics using process technology that easily changes the shape of non-woven fabrics and improves mechanical properties. In particular, it is considered that a non-woven fabric with a thin material shape and improved mechanical properties will be easily applied to a continuous secondary battery manufacturing industry such as roll to roll operation.

A Study on the Development of Upcycling Textile Design and Digital 3D Utilization for the Sustainable Fashion Industry (지속가능한 패션산업을 위한 업사이클링 텍스타일디자인 개발과 디지털 3D 활용 연구)

  • Mikyoung Kim
    • Journal of Fashion Business
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    • v.27 no.5
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    • pp.108-120
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    • 2023
  • Recently, interest in eco-friendliness and sustainability has been increasing due to the rapid progress of fast fashion and the crisis of sudden environmental changes after COVID-19. This study aims to develop upcycling textiles and express product design using digital 3D to realize a sustainable fashion industry and present environmental aspects, diversity, creativity, and new directions in fashion industry design. The research method is to develop and pattern upcycling textile designs by applying weaving techniques with waste materials. It uses the developed upcycling textile design in digital 3D to incorporate it into clothing fashion and shows the utility and practicality of upcycling textile design. As a result of the study, the appearance is realistic when outputting DTP of upcycling textile design. It endures without loosening or tearing, making it a durable and creatively expressive fashion item. Texpro 3D mapping reduces the time and cost of making actual sample fabric. Upcycling textile design and 3D CLO virtual clothing are combined to produce actual clothing samples, resulting in zero waste reduction due to cutting and sewing. This study anticipates actively and continuously advancing the development of upcycling textile design and digital 3D in terms of ethics and the environment.

Text-Driven Multiple-Path Discourse Processing for Descriptive Texts

  • Seo, Jungyun
    • Journal of Electrical Engineering and information Science
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    • v.1 no.2
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    • pp.1-8
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    • 1996
  • This paper presents a text-driven discourse analysis system, called DPAS. DPAS constructs a discourse structure by weaving together clauses in the text by finding discourse relations between a clause and the clauses in a context. The basic processing model of DPAS is based on the stack based model of discourse analysis suggested by Grosz and Sidner. We extend the model with dynamic programming method to handle various discourse ambiguities effectively and efficiently. We develop the idea of a context space to keep all information of a context. DPAS parses a text by considering all possible discourse relations between a clause and a context. Since different discourse relations may result in different states of a context, DPAS maintains multiple context spaces for an ambiguous text. Since maintaining all interpretations until the whole text is processed requires too much computing resources, DPAS uses the idea of depth-limited search to limit the search space. If there is more than one discourse relation between an input clause and a context, DPAS constructs context spaces one context space for each discourse relation. Then, DPAS applies heuristics to choose the most desirable context space after it processes some more input clauses. Since the basic idea of DPAS is domain independent, although we used descriptive texts to demonstrate DPAS, we believe the idea of DPAS can be extended to understand other styles of texts.

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The characteristics of Korean textile production of the Honam district from the 1930s to the 1980s - Focused on cotton and silk textiles in Gurye, Jella Province - (1930년대~1980년대 호남 지방의 직물 생산 방식의 특징 - 전라남도 구례군의 면직물과 견직물을 중심으로 -)

  • Choi, Seung Yeun
    • The Research Journal of the Costume Culture
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    • v.21 no.6
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    • pp.844-859
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    • 2013
  • This study investigated the characteristics and changes of cotton and silk textile production in Honam district, especially in Gurye, Jella Province from the 1930s to the 1980s. To do this, research method in this study was both literature and fieldwork research and results were as follows. First, in terms of cotton fiber cultivation of Gurye, Chinese Cotton(在來綿) has been substituted for America Cotton(陸地綿) and additionally, Yellow Cotton (黃綿) has been cultivated in the 1930s. Also, in terms of silk fiber cultivation of Gurye, Joseon Silkworm has been substituted for Japanese Silkworm by inflowing the Japanese mulberry tree. Second, in terms of spinning method, cotton spinning has been conducted at every house by an individual tool from the 1930s to the 1950s and has been gradually changed to mechanization by market shop equipped with mechanized cotton gin and cotton whipping tool. However, there have been no changes in silk spinning method from the 1930s to the 1980s. Third, loom type has been changed from the traditional Korean back-strap loom to the treadle loom between the 1930s and the 1940s. Fourth, dyeing was conducted by chemical dyestuff after weaving. The circulation of textile was done through the joint market by Japan in the 1930s~1950s and has changed to the market sales by producers since the 1950s. Fifth, since the 1970s, the outputs of cotton and silk textile of Gurye have been reduced. This was connected with the westernization and the inflow of the synthetic fiber and cloth in cotton and was related to the changes of the nation policy and silk fiber inflow from the china to the Korean farm villages.

A Design of XAS4B for Adding Function in BPEL using Aspect-Oriented Programming (관점지향 프로그래밍 기법을 이용한 BPEL 기능 추가를 위한 XAS4B 엔진 설계)

  • Kwak, Donggyu;Choi, Jaeyoung
    • Journal of IKEEE
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    • v.17 no.4
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    • pp.525-530
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    • 2013
  • The BPEL is standard of workflow. A domain experts not familiar with programming languages and he can write workflow. But he need new function without BPEL. We must develop or modify a BPEL engine for new functions. This method is expensive. In this paper, We propose the XAS4B documents that extend the XML schema. And We describe method that can process new function in BPEL using Aspect-Oriented Programming. AOP can cross-cut concern adding to core concern using weaving without modification. We use an existing B2J (BPEL to JAVA) engine that is transfer a BPEL's document to a JAVA program and B2J execute a JAVA program. This system adding new functions to BPEL's flow using AOP. In this system, A JAVA program is core concern and a program of new function is cross-cut concern. And this system weave a JAVA program made in B2J and a program of new function. This method provide abstract grammar for new functions. And domain experts can easily write new function is a BPEL Document and reuse new function using abstract grammar.

Determination of the Required Minimum Spacing Between Signalized Intersection and Minor Road (교차로에 인접한 부 도로의 적정 이격거리 산정)

  • Kwon, Sung-Dae;Kim, Yoon-Mi;Kang, Nam-Won;Ha, Tae-Jun
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.34 no.2
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    • pp.573-582
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    • 2014
  • Since there is no clear installation criteria on minimum spacing between signalized intersection and minor road, many problems have occurred in terms of traffic operation and safety. Even though many studies about entrance/exit intersection have been done in operational aspects, there is no specific and detailed research between the signalized intersection and minor road by now. Thus, this research suggests the optimal spacing between signalized intersection and minor road considering traffic operation and safety. Also, survey on vehicle behavior was conducted in this research. In conclusion, by suggesting the required minimum spacing between signalized intersection and minor road, it can be contribute in establishing and operating the installation criteria between signalized intersection and minor road.

A Study on Dahoe(多繪) and Mangsu(網綬) Used in Royal Formal Dresses in the Joseon Dynasty (조선시대 왕실 예복에 사용된 다회(多繪) 및 망수(網綬) 연구)

  • Choi, Yeon Woo;Park, Yoon Mee;Kim, Myoung Yi
    • Journal of the Korean Society of Costume
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    • v.66 no.5
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    • pp.133-148
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    • 2016
  • This study examined dahoe(多繪-braided cord) and mangsu(網綬-ornament of husu for ceremonial dress) used in myeon gwan(冕冠), daedae(大帶), and husu(後綬) among royal formal dresses in the Joseon Dynasty(1392-1910) based on historical materials including literature, relics, and paintings. The results of this study are as follows. In myeon-gwan, dahoe was used for cap strings, goeing(紘) and yeong(纓). Cap strings were applied to the king, the Crown Prince, and the eldest son of the Crown Prince regardless of their status, and they showed differences among the periods. Both goeing and yeong were used during the early period of Joseon, and then only yeong was used in the late period. As goeing was removed and only yeong was used in the late period, patterns combining goeing and yeong, in color and wearing method, appeared. Dahoe used in cap strings is dongdahoe(童多繪-a kind of braided cord). In daedae, 'nyuyak(紐約)' was tied up to its fastening part. The material of nyuyak was changed from dongdahoe in the early Joseon Dynasty to guangdahoe(廣多繪-a kind of braided cord) in the late period, and the method of using it was also changed. Husu was imported from Beijing in China during the early period of the Joseon Dynasty, but in 1747, it was regulated to be woven in Joseon, and at that time, King Yeongjo attempted to restore the institution of weaving husu with "320 su(首)," namely, 6,400 strands as specified for the status of a prince of the Ming Dynasty.