• Title/Summary/Keyword: 아라미드보강 알루미늄재

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A study on fatigue life of aluminum plate reinforced with FRP in aircraft structure (항공기 구조물에서 FRP를 이용한 보강부재의 피로수명에 대한 연구)

  • 박원조;허정원;이광영
    • Journal of Ocean Engineering and Technology
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    • v.11 no.3
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    • pp.69-75
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    • 1997
  • A A12024-T3 plate has been reinforced with AFRP to be a Hybrid-Composite, APAL. The fatigue life of the APAL has been investigated. The effects of bonding surface, numbers of AFRP bonded and AFRP orientation on fatigue life have been compared with A12024-T3 plate. Fatigue life of APAL has been remarkedly increased compared with that of A12024-T3 plate. The fatigue life has depended on bonding surface and AFRP orientation, but no relationship could be found with numbers of AFRP laminates.

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The Behavior of Crack Growth Rate for APAL and CPAL Patched with FRP Laminate in Aluminum Alloy Plate (알루미늄 합금판재에 FRP 라미네이터를 보강한 APAL 및 CPAL 재의 균열전파속도 거동)

  • 윤한기;정해용;허정원
    • Transactions of the Korean Society of Mechanical Engineers
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    • v.19 no.4
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    • pp.1013-1022
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    • 1995
  • A hybrid composite (APAL;Aramid Patched ALuminum alloy, CPAL;Carbon Patched ALluminum alloy), consisting of a Al 2024-T3 aluminum alloy plate sandwiched between two aramid/epoxy and carbon/epoxy laminate, was developed. Fatigue crack growth behavior was examined at stress ratios of R=0.2, 0.5. The APAL and CPAL showed superior fatigue crack growth resistance, which may be attributed to the crack bridging effect imposed by the intact fibers in the crack wake.