• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2000.04a
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• pp.166-172
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• 2000

• Proceedings of the Korean Fiber Society Conference
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• 2000.04a
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• pp.153-156
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• 2000

• Proceedings of the Korean Fiber Society Conference
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• 2000.04a
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• pp.157-160
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• 2000

• International Journal of High-Rise Buildings
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• v.11 no.2
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• pp.115-124
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• 2022

Welding is a significant part of the construction industry. Since most high-rise building construction structures rely on a robust metal frame welded together, welding defect can damage welded structures and is critical to safety and quality. Despite its importance and heavy usage in construction, the labor shortage of welders has been a continuous challenge to the construction industry. To deal with the labor shortage, the ultimate goal of this study is to design and develop an automated robotic welding system composed of a welding machine, unmanned ground vehicle (UGV), robotic arm, and visual sensors. This paper proposes and focuses on automated weaving using the robotic arm. For automated welding operation, a microcontroller is used to control the switch and is added to a welding torch by physically modifying the hardware. Varying weave patterns are mathematically programmed. The automated weaving is tested using a brush pen and a ballpoint pen to clearly see the patterns and detect any changes in vertical forces by the arm during weaving. The results show that the weave patterns have sufficiently high consistency and precision to be used in the actual welding. Lastly, actual welding was performed, and the results are presented.

• 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.

• Textile Coloration and Finishing
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• v.16 no.5
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• pp.54-61
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• 2004

This research surveys the differences of fabric mechanical properties with the different looms and the fabric positions according to the warp and weft yarn tensions on the Vamatex and Omega-Panter looms respectively. For this purpose, the grey fabrics woven by PET filament using two test looms are dyed and finished. The processing shrinkages are measured on each processes such as dryer, scouring, pre-set, dyeing and final-set using the fabric density and width. The mechanical properties of the finished fabrics are measured and discussed with relation to the warp and weft yarn tensions of the two looms and the fabric positions. In addition, the fabric thickness according to the fabric positions such as right, left selvedges and center of the fabrics is also measured and discussed with the characteristics of the Vamatex and Omega-Panter looms.

• 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.

• Journal of the Korean Home Economics Association
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• v.23 no.3
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• pp.27-38
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• 1985

In KOREA, the history of weaving is so long even in prinitive, there are the traces of fabric emmision using Spindle already in the Neolithic age. And coming up to the period of Three States, becoming active of cultivation of fibers, it can be known the variety of kinds and the production of fine products by improvement of new method of weaving using weaving machine. In the period of shilla state, there is a record of making the fine fabrics with 28 bracts. But wearing of silks fabrics was limitted for only the nobility and common people were wearing native thick hemp clothes. Also in the period of Korea state, they were wearing the hemp clothes by cultivation of hemp. The good quality products were worn by the King or the nobility and women in KOREA made their best with whole efforts to pay to the authorities with woven products of hemp clothes, so in the 14th year of King Chung- Ryul, King prohibited the presentation of fine hemp clothes by his order. By the end of KOREA state, before the production, common people was mainly wearing the hemp clothes. Coming up to the Kingdom of Chosun the sericulture was promoted by establishment of the sericulture encouraging low. Therefore the working hours of women were highly increased. The products of Song-do, Chin-ju for cotton clothes, those of Han-san-the same now as in old times-for ramie clothes, those of Han-Kyung province and An-dong for hemp fabrics were estimated as the best qualities. And the hemp clothes of Kang-won province is not so fine but is very useful and famous for mourning clothes and summer clothes for the farmer. It is true that our history of weaving was begun with hemp as a continous and precious friend of common people during all the historical periods-even though for a while it went backward because of chinese silks.

• 제어로봇시스템학회:학술대회논문집
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• 2005.06a
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• pp.1141-1145
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• 2005

This paper proposes a robust tension control algorithm for the let-off and take-up system driven by servo motor which is robust to disturbance and tension variation by using SVR(Support Vector Regression). Quality of textile goods in fiber manufacturing process highly depends on control of let-off, take-up and tension which are essential for constant tension control of yarn and textile fabrics and correct length of them. The physical properties of textile fabrics are very sensitive to several factors(temperature, humidity, radius change of warp beam etc.) which result in tension change. Rapid development of fiber manufacture machine for higher productivity requires control system for let-off, take-up and tension for robustness to sharp tension-variation and quick response. The validity and the usefulness of the proposed algorithm are thoroughly verified through numerical simulation.

• Journal of the Korean Society of Industry Convergence
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• v.26 no.4_2
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• pp.577-584
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• 2023

In this study, among the parts of oil vapor collectors that are already being produced, weaving wire brush automatic transplanters for oil vapor collectors for machine tools of the weaving fixing method, which are not automated due to the specificity of the process and are being produced manually, are developed and reliability is secured through performance evaluation. did Oil vapor collectors play an important role in removing air pollutants and improving air quality, and the coagulation effect of the collection technology is mostly due to brushes. In the experiment, an automatic transplanter was developed to automatically manufacture and produce the wire brush of the oil vapor collector, which is manufactured and used manually. For the experiment of the developed wire brush, an experimental chamber was built, and performance and durability were evaluated through the dust collection efficiency evaluation using the electrostatic precipitator method of contaminants (oil mist). Through this study, we intend to reduce the production time and unit cost of collectors and improve the environment at industrial sites.