Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Laminate Weight Optimization of Composite Ship Structures based on Experimental Data

FRP 기계적 물성을 고려한 복합소재 선체구조 적층판 경량화 설계

  • Oh, Daekyun (Department of Naval Architecture and Ocean Engineering, Mokpo National Maritime University) ;
  • Han, Zhiqiang (Department of Ocean System Engineering, Graduate School, Mokpo National Maritime University) ;
  • Noh, Jackyou (Department of Naval Architecture & Ocean Engineering, Kunsan National University) ;
  • Jeong, Sookhyun (Department of Ocean System Engineering, Graduate School, Mokpo National Maritime University)
  • 오대균 (목포해양대학교 조선해양공학과) ;
  • ;
  • 노재규 (목포해양대학교 대학원 해양시스템공학과) ;
  • 정숙현 (군산대학교 조선해양공학과)
  • Received : 2020.02.18
  • Accepted : 2020.03.03
  • Published : 2020.04.20
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Abstract

The study aims to improve the previous theory-based algorithm on the lightweight design of laminate structures of a composite ship based on the mechanical properties of fiber, resin, and laminates obtained from experiments. From a case study on using a hydrometer to measure the specific gravity of e-glass fiber woven roving fabric/polyester resin used as the raw material for the hull of a 52 ft composite ship, the equation for calculating the weight of laminate was redefined, and the relationship between decreasing mechanical properties and increasing glass content was determined from the results of material testing according to ASTM D5083 and ASTM D790. After applying these experimental data to the existing algorithm and improving it, a possible laminate design that maximizes the specific strength of the composite material was confirmed. In a case study that applied the existing algorithm based on rules, the optimal lightweight design of composite structures was achieved when the weight fraction of e-glass fiber was increased by 57.5% compared with that in the original design, but the improved algorithm allowed for an increase of only 17.5%.

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References

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