• Title/Summary/Keyword: Critical flux at extinguishment

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Fire test procedures for flammability of bulkhead, ceiling and deck finish materials (선박의 격벽, 천정, 내장재 및 표면바닥재의 화재안정성 평가방법)

  • Kim, S.Y.;Kim, D.S.;Ahn, B.H.;No, H.S.
    • Proceedings of KOSOMES biannual meeting
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    • 2007.05a
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    • pp.157-159
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    • 2007
  • It is very important to protect life, property at sea from any fire. Recommendation on improved fire test procedures for surface flammability of bulkhead ceiling and deck finish materials specifies a procedure for measuring fire characterizing their flammability and thus their suitability for use in marine construction. In this paper we investigated the positive expected by fire test procedures for flammability of bulkhead ceiling and deck finish materials. Also, unusual materials were analyzed. Finally, we suggest methods to solve several problems related to unusual materials.

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Fire test procedures for flammability of bulkhead, ceiling and deck finish materials (선박의 격벽, 천정, 내장재 및 표면바닥재의 화재안정성 평가방법)

  • Kim, S.Y.;Kim, D.S.;Ahn, B.H.;Kwark, J.H.
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2008.04a
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    • pp.117-119
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    • 2008
  • It is very important to protect life, property at sea from any fire. Recommendation on improved fire test procedures for surface flammability of bulkhead, ceiling and deck finish materials specifies a procedure for measuring fire characterizing their flammability and thus their suitability for use in marine construction. In this paper, we investigated the positive expected by fire test procedures for flammability of bulkhead, ceiling and deck finish materials. Also, unusual materials were analyzed. Finally, we suggest methods to solve several problems related to unusual materials.

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Comparison of Resin Impregnation and Mechanical Properties of Composites Based on Fiber Plasma Treatment (섬유 플라즈마 처리에 따른 복합재료의 수지 함침성 및 기계적 특성 비교)

  • Seong Baek Yang;Donghyeon Lee;Yongseok Lee;Dong-Jun Kwon
    • Composites Research
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    • v.36 no.6
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    • pp.388-394
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    • 2023
  • In composites manufacturing, increasing resin impregnation is a key way to speed up the manufacturing process and improve product quality. While resin improvement is important, simple fiber surface treatments can also improve resin flowability. In this study, different plasma treatment times were applied to carbon fiber fabrics to improve the impregnation between resin and fiber. Electrical resistivity measurements were used to evaluate the dispersion of resin in the fibers, which changed with plasma treatment. The effect of fiber surface treatment on resin spreadability could be observed in real time. When inserting a carbon fiber tow into the resin, the amount of resin that soaked into the tow was measured to objectively compare resin impregnation. Five minutes of plasma treatment improved the tensile and compressive strength of the composite by more than 50%, while reducing the void content and increasing the fire point impregnation flow rate. Finally, a dynamic flexural fatigue test was conducted using a portion of the composite used as an architectural composite part, and the composite part did not fail after one million cycles of a 3 kN load.