• Title/Summary/Keyword: Sleeve

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Development of Wiper Antenna for Automobile using Single Sleeve Monopole (단일 슬리브 모노폴을 이용한 차량용 와이퍼 안테나의 개발)

  • 최광제
    • Transactions of the Korean Society of Automotive Engineers
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    • v.9 no.2
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    • pp.210-215
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    • 2001
  • The pole antenna of vehicles for AM/FM radio broadcasting receptions has many probems, such as damageable mechanical system and noise etc. It is considered that noise is composed of the structural vibration noise and the air flow induced aerodynamic noise. Also we find out that the setting process of a printed on-glass automobile antenna has many difficulties. Recently, the above mentioned problems can be reduced by employing enhanced wiper antenna which utilizes the windshied wiper arm. The new system is a passive antenna. In this study, experiments for the characteristics of a wiper antenna by measuring the SWR, radiation pattern and received powe have been carried out. The experimental results show that the efficiency of the wiper antenna has better performance than any other antenna.

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The Study on Tension and thermal properties of Corrosive-fractured Steel Sleeve (강 슬리브 파단 직선 슬리브의 장력 및 열적 특성 분석 연구)

  • Ahn, Sang-Hyun;Kim, Byung-Geol;Kim, Shang-Shu;Sohn, Hong-Kwan;Park, In-Pyo;Kim, Sung-Kyu
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2008.06a
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    • pp.104-105
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    • 2008
  • According to previous report, aged sleeves of old transmission line showed several defaulted installation patterns, which is biased or corrosive-fractured of steel sleeve installed cases. The latter case occupied almost 25 percent of investigated aged sleeves. These defects can cause serious accidents such as rapid increasing of sag or falling out of overhead conductor from sleeves. This paper studies thermal properties and tension for ACSR conductor in case of fractured steel sleeve model. The detailed results were presented in the text.

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Integrity Evaluation of Sleeve Extension Composites Manufactured by Fiber Placement System (FPS) (Fiber Placement System(FPS)에 의해 제조된 복합재료 Sleeve Extension의 성형 건전성 평가)

  • Kong Jin-Woo;Kim Jin-Bong;Kim Tae-Wook;Ju Jin
    • Proceedings of the Korean Society For Composite Materials Conference
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    • 2004.04a
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    • pp.254-257
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    • 2004
  • Fiber placement system (FPS) carries out an advanced composites process which orients high strength reinforcing fibers in specific directions. The process includes wet winding, thermoset tape winding, thermoset prepreg placement and thermoplastic prepreg placement. FPS have the advantage of tape laying and filament winding with computer control and software. Using FPS can reduce costs, cycle times, structural weight, and handwork/rework when manufacturing composite parts. The sleeve extension is a part of the helicopter rotator systems. In this study, The sleeve extension composites were manufactured using FPS and tensile properties of this composites were characterized using universal testing machine(UTM).

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Experimental Study on Tensile Strength of Straight-Line Connection Using Sleeve for Indirect Method (간접활선용 압축 슬리브를 이용한 전선 직선접속에 대한 실험적 연구)

  • Kim, Sang-Bong;Kim, Kang-Sik;Oh, Gi-Dae;Song, Won-Keun;Keum, Ui-Yeon
    • KEPCO Journal on Electric Power and Energy
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    • v.7 no.1
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    • pp.85-91
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    • 2021
  • With the social atmosphere of respect for human life and the increasing interest in safety of field workers, research and development is underway in various ways to transform direct live method into indirect live method in the field of distribution. As part of this measure, it was necessary to convert electric pole and complex facilities work from machining power distribution to indirect live operation, and install a straight connecting sleeve that connects cut wires for by-pass method, but it failed to meet the tensile strength standard when constructing a sleeve constructed by direct method. In this paper, the design factors were derived based on the case of overseas similar sleeves and the tensile strength evaluation of each variable was performed, based on the analysis of these test results, the method for securing tensile strength of straight-line access sleeves for indirect running was presented.

The Effects of Heat Input and Gas Flow Rate on Weld Integrity for Sleeve Repair Welding of In-Service Gas Pipelines

  • Kim, Y.P.;Kim, W.S.;Bang, I.W.;Oh, K.H.
    • International Journal of Korean Welding Society
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    • v.2 no.2
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    • pp.36-41
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    • 2002
  • The experimental and numerical study has been conducted on the sleeve repair welding of API 5L X65 pipeline. SMAW and GTAW were applied to weld the sleeve. The macrostructure and hardness of repair welds have been examined. The finite element analysis of the multi-pass sleeve-fillet welding has been conducted to validate the experiment and investigate the effects of in-service welding conditions. The effect of gas flow rate on the hydrogen cracking was investigated. The effect of internal pressure on residual stresses and plastic strain was investigated. The allowable heat input was predicted considering the maximum temperature of inner surface of pipe and cooling rate at CGHAZ.

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Effect of Change of Sleeve Type on Fireproofing Performance of Through-Penetration Firestop System on Metallic Pipes (금속관 설비관통부 내화채움 시스템의 슬리브 종류 변화가 내화시험에 미치는 영향)

  • Choi, Hong-Beom;Jeong, A-Yeong;Lee, Hyung-DO;Park, Jin-O;Ok, Chi-Yeol
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2023.05a
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    • pp.327-328
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    • 2023
  • In this paper, the effect of change of sleeve type on fireproofing performance of through-penetration firestop system on metallic pipes was analyzed. As a result, if the material of the sleeve is high in thermal conductivity and thick, a large amount of heat is transferred to the top of the support structure.

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Study of design of kimono sleeve - Focused on the design characteristics of the kimono that appeared in 20th-century fashion - (기모노 슬리브 디자인 연구 - 20세기 패션에 나타난 기모노 슬리브의 디자인적 특성을 중심으로 -)

  • Kwon, Soon Kyo;Park, Sun Kyung
    • The Research Journal of the Costume Culture
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    • v.23 no.4
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    • pp.595-603
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    • 2015
  • The influence of Japonism, which is the post-mid-$19^{th}$ century phenomenon of appreciating and preferring the Japanese style that manifested all across Western art, started to grow as a result of the active open-door policy of Japan at this time. As all areas of Japanese arts and culture, such as paintings, sculptures and theater plays, influenced Europe and America, this influence developed into a cultural phenomenon that was reflected even in fashion. The characteristic elements of the kimono first expanded from Paris and showed a similar silhouette to that of the traditional kimono in the early $20^{th}$ century, but towards the middle and the end of the century, kimono sleeves that were connected as one piece without a connecting seam line between the sleeve and bodice started to appear. The foundation of this research focuses on the design characteristics of kimono sleeves that can be seen in $20^{th}$-century fashion, and five varying kimono sleeve jackets and coats based on these formative characteristics were designed. Each design had a gusset design added, which improved the external and mobility problems inherent in kimono sleeve patterns, while at the same time serving as a proposal for new design element applications. Additionally, through various changes to and attempts at designs using the kimono sleeve as a limiting factor, new design possibilities were explored.

Analysis of Bulky Silhouette Coat Trend in 2013/14, 2014/15 F/W Season of Women's Ready to Wear Collection: With Paris, Milan, London and New York Collection (2013/14, 2014/15 F/W 컬렉션에 나타난 벌키 실루엣 코트 경향 분석)

  • Lee, Shin-Young;Shin, Kyoung-Hee
    • Fashion & Textile Research Journal
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    • v.19 no.2
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    • pp.121-133
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    • 2017
  • This study investigates the design relation between shoulder line and sleeve line for designing bulky silhouettes as well as examines the trend sensitivity and design difference of each city through a comparison of the four cities collection (Paris, Milan, London, and New York). The results are as follows. In the four major fashion capitals, the rates of all-season coats were higher in 2014/15 F/W than those in the 2013/14 F/W season. At the 2014/15 F/W season, the proportion of the bulky silhouette coat, (including the fur and cape coat) increased and confirmed the bulky silhouette fashion trend. Second, an examining of the proportion of bulky silhouette coats manufactured by leading brands in major cities, indicated that London brands readily followed the trend of bulky silhouette coats when compared to other cities. This trend was also accepted by most brands in New York. Most brands in London and New York are highly compliant with the latest fashion trends. Third, the drop shoulder design was mostly presented in the shoulder pit of the bulky coat. In case of the sleeve, the shape of the jar was kept wide at the elbow line and made narrower toward the beak in most bulky silhouette coats. The importance of shoulder and sleeve design is clearly highlighted in the bulky silhouette coat. Fourth, detail design trends were different according to type of sleeve and shoulder fit. The results show the relationship between shoulder and sleeve design.

Superior Pole Sleeve Fracture of the Patella in Children - A Case Report - (소아에서 발생한 슬개골 상단부 소매형 골절 - 증례 보고 -)

  • Kim, Ki-Choul;Ahn, Gil-Yeong;Nam, Il-Hyun;Moon, Gi-Hyuk;Lee, Yeong-Hyun;Lee, Jae-Hoon
    • Journal of Korean Orthopaedic Sports Medicine
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    • v.8 no.2
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    • pp.121-124
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    • 2009
  • Patellar fractures in children represent less than 2% of all patellar fractures including adults, and occur about 1% of all pediatric fractures. Because of property of the growing patella, osteochondral or avulsion fractures are more common in children and the most common type of patella fracture in children is sleeve fracture. Avulsion or sleeve fractures of the patella in children can occur at the superior or inferior pole of the patella. Most reported cases of sleeve fracture are involving the inferior patellar pole, but involving the superior patellar pole is very rare. We experienced a case of sleeve fracture occurred at the superior pole of the patella in a sixteen-year-old boy and report this case with literature review.

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