Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Resin Flow Analysis of RTM Manufacturing Method for Design of Composite Fluid Storage Tank Structure

복합재료 유체 저장 탱크 구조 설계를 위한 RTM 공법 수지 유동 해석

  • Park, Hyunbum (Dept. of Defense Science & Technology-Aeronautics, Howon University)
  • 박현범 (호원대학교 국방과학기술학부 항공시스템공학 전공)
  • Received : 2018.10.23
  • Accepted : 2019.01.02
  • Published : 2019.02.28
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Abstract

In this study, resin flow analysis of resin transfer moulding (RTM) method was performed for mould design of composite structure. The target composite structure was a tank used for fluid storage. Natural c fiber composite was adopted for composite structural design of the fluid storage tank. RTM was adopted for manufacturing of the tank using natural fiber composites. Resin flow analysis was performed to find the proper RTM conditions of the tank. The resin flow analysis was performed using the commercial FEM flow simulation software. After repeated analysis while changing the location of resin inlet and outlet, the proper resin filling time and pattern were found.

본 연구에서 복합재료 구조 설계를 위한 수지 이송 성형 공법의 수지 침투 유동 해석을 수행하였다. 대상 복합재료 구조물은 유체 저장 탱크 구조물이다. 유체 저장 탱크 복합재료 구조물 설계를 위해 자연 섬유 복합재료가 적용되었다. 자연섬유 복합재 구조의 제작을 위해 수지 이송 성형 공법을 채택하였다. 탱크의 적절한 RTM 조건을 도출하기 위하여 수지 침투 유동 해석을 수행하였다. 수지 유동 해석은 상용 유한 요소 해석 시뮬레이션 프로그램을 활용하여 수행하였다. 수지 주입구와 배출구의 다양한 변경에 따른 반복적 해석을 수행하여 최적의 수지 주입 시간과 위치를 결정하였다.

Keywords

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Fig. 1 Hydraulic Pressure vs Tank Height

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Fig. 2 Designed Configuration of Tank for Fluid Storage

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Fig. 3 Finite Element Modeling for Tank Analysis

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Fig. 4 Stress Analysis Result of Tank for Fluid Storage

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Fig. 5 Resin Flow Analysis Result of Permeability Test and Analysis

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Fig. 6 Modelling of Tank Lower Part for Resin Flow Analysis

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Fig. 7 Resin Flow Analysis Result of Case 1(Filling Time)

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Fig. 8 Resin Flow Analysis Result of Case 2(Filling Time)

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Fig. 9 Resin Flow Analysis Result of Case 3(Filling Time)

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Fig. 10 Surface Treatment of Master Model

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Fig. 11 Application on Gel Coat of Surface

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Fig. 12 Lamination of Glass Composite for Mould Manufacturing

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Fig. 13 Manufactured Mould of Tank

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Fig. 14 Flax Fiber Lamination of Tank Lower Part

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Fig. 15 Manufactured Prototype

Table 1 Mechanical Properties of Flax/vinyl Ester Specimen (Fiber Volume Fraction: 51%)

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Table 2 Resin Flow Analysis Parameter

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Table 3 RTM Resin Flow Analysis Cases

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Table 4 Adhesive Specification (ISR 70-05 AP)

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