• Title/Summary/Keyword: filament winding pattern design

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Characteristics of GRP tube using Composite Hollow Bushing by Filament Winding (Filament Winding에 의한 Composite Hollow Bushing용 GRP tube의 특성)

  • Cho, Han-Goo;Kang, Hyung-Kyung;Yoo, Dea-Hoon
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2008.11a
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    • pp.378-379
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    • 2008
  • Recently, composite hollow bushings have been increasingly employed mainly from the various characteristics. Composite bushings are superior to porcelain bushings in several respects, including lighter weight, better anti-pollution and anti-explosion properties, and easer manufacturing. Filament wound GRP tubes which have various winding angle were manufactured by using a filament winding machine. This paper will show some design issues and winding condition for composite bushing. And, results show that the winding condition of composite GRP tubes can be used to improved their bending strength and pressure, For bending and pressure tested, tubes with the hybrid winding pattern show higher strength than those of unit winding pattern. Also, the influence of absorption was evaluated through such as measurement of the dye penetration test and water diffusion test, also aspects of surface state using scanning electron microscopy.

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A Study on Improving Fatigue Life for Composite Cylinder with Seamless Integrated Liner (이음매 없는 일체형 라이너를 갖는 복합재 압력용기의 피로수명 향상에 대한 연구)

  • Kim, Hyo-Joon
    • Journal of the Korean Institute of Gas
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    • v.17 no.6
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    • pp.46-51
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    • 2013
  • Composite cylinder is used by hydrogen fuel cell vehicles and natural gas vehicles because of high specific modulus, specific strength and fatigue resistance. composite cylinder has a seamless integrated liner and it is fully overwrapped with structural fibers of high strength carbon fibers in an epoxy matrix. In this study, filament winding pattern and autofrettage pressure design technique are presented considering structural weakness of knuckle and compressive residual stress. Presented methodology is verified by pressure cycling test of composite cylinders.

Development of Filament Wound Composite Pressure Vessels with a Single Boss (필라멘트 와인딩법에 의한 단일 개구부 복합재료 압력용기의 개발)

  • Hwang, Byeong-Seon;Kim, Byeong-Seon;Kim, Byeong-Ha;Park, Seung-Beom;Roger, Davidson
    • 연구논문집
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    • s.30
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    • pp.129-135
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    • 2000
  • Double boss type composite pressure bottles have been developed widely but single boss type had not because there are some difficulty in technical point. In this paper a research was performed to develop composite pressure vessel in conjunction with design, fabrication, and test. Fiber pattern and angles were decided by CADFIL software and they are [liner/$15^{\circ}$/$15^{\circ}$/$90^{\circ}$/$18^{\circ}$/$90^{\circ}$/$21^{\circ}$/$21^{\circ}$/$90^{\circ}$]. Fabrication of bottles was done by AEA's 5-axis filament winding machine. During fabrication fiber optic sensor were embedded to measure were behavior of structure at the applied internal pressure. Even though satisfied test results were not obtained, the experimental set-up of fiber optics showed the possibility for the application of filament wound vessels. However, the conventional strain and fabrication of single boss composite bottles.

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Mechanical and Environment Ability of FRP Pole for a Distribution Line (배전용 FRP전주의 기계적 및 환경성능)

  • 박기호;조한구;한동희;이웅선;송일근
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2000.11a
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    • pp.395-398
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    • 2000
  • In this study mechanical and environment ability of FRP pole for a distribution line about high strength and good insulation properties. The basic filament winding process creates a helical winding pattern. In mechanical analysis of splice with mechanical fastened joint it is important to evaluate a critical load of faster having maximum stress. It is also present a result of several examples to compare this with analytical one. On repair design this finite element method will be used as basis. The influence of environmental factors, such as elevated temperatures, high humidity, and corrosive fluids, and ultraviolet(UV) rays, upon the performance of polymeric matrix composite is of concern in many applications.

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Fall Impact Analysis of Type 4 Composite Pressure Vessels Using SPH Techniques (SPH 기법을 활용한 Type 4 복합재료 압력용기 낙하 충격 해석)

  • SONG, GWINAM;KIM, HANSANG
    • Journal of Hydrogen and New Energy
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    • v.32 no.3
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    • pp.172-179
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    • 2021
  • The drop impact analysis was carried out on Type 4 pressure containers, and the degree of damage to the falling environment was predicted and determined using smoothed particle hydrodynamics (SPH) techniques. The purpose of the design and the optimization process of the winding pattern of the pressure vessel of the composite material is to verify the safety of the container in actual use. Finally, an interpretation process that can be implemented in accordance with domestic test standards can be established to reduce the cost of testing and containers through pre-test interpretation. The research on the fall analysis of pressure vessels of composite materials was conducted using Abaqus, and optimization was conducted using ISIGHT. As a result, the safety of composite pressure vessels in the falling environment was verified.

A Study on Module Design and Performance of Polymer Arrester (폴리머 피뢰기의 모듈 설계 및 성능에 관한 연구)

  • Cho, Han-Goo;Chun, Jong-Uk;Kang, Yeong-Kil
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2003.05e
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    • pp.108-111
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    • 2003
  • The main objective of this paper is to module design and pressure relief test a new type of polymer gapless surge arrester for power distribution line. Metal oxide surge arrester for most electric power system applications, power distribution line and electric train are now being used extensively to protect overvoltage due to lightning. Surge arresters with porcelain housing must not have explosive breakage of the housing to minimize damage to other equipment when subjected to internal high short circuit current. When breakdown of gapless elements in a surge arrester occurs due to flashover, fault short current flows through the arrester and internal pressure of the arrester rises. The pressure rise can usually be limited by fitting a pressure relief diaphragm and transferring the arc from the inside to the outside of the housing. However, there is possibility of porcelain fragmentation caused by the thermal shock, pressure rise, etc. Non-fragmenting of the housing is the most desired way to prevent damage to other equipment. The pressure change which is occurred by flashover become discharge energy. This discharge energy raises to damage arrester housing and arrester housing is dispersed as small fragment. Therefore, the pressure relief design is requested to obstruct housing dispersion.

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Processing and Pressure Test of Filament Wound Composite Pressure Vessels for Oxygen Tanks (복합재료 산소 압력용기의 성형 및 내압 시험)

  • 황병선;김병하;김병선;박승범;엄문광
    • Composites Research
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    • v.14 no.3
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    • pp.10-17
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    • 2001
  • A reseach was peformed to develop composite pressure vessels in conjunction with design, fabrication, and test. Fiber pattern and angels were decided by CADFIL software and they were [$liner/15^{\circ}/15^{\circ}/90^{\circ}/18^{\circ}/90^{\circ}/21^{\circ}/21^{\circ}/90^{\circ}$]. Fabrication of bottles were done by 5-axis filament winding machine. During fabrication fiber optic sensors were embedded to measure the strain at points when internal pressure was applied by water pump. Conventional strain gage instrumentation showed the stable test results. The test results were compared to finite element analysis results and they were close each other in strain values. One can see the successful design and fabrication of single boss composite vessels.

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