Article
  • Effect of the Ratio Between Supporting Span and Thickness of the Specimen in the Case of Three Points Flexural Test on the Damage and Fracture Phenomena of Glass Fabric/BMI Laminates
  • Lee JR, Kim JH, Shin DK, Kim YC, Yoon DJ
  • Glass Fabric/BMI 적층판의 삼점굴곡 시험시 발생되는 손상 및 파단현상에 대해 지지간 거리와 시편두께의 비가 미치는 영향
  • 이재락, 김준형, 신동근, 김영철, 윤동진
Abstract
Glass fabric/BMI composites of structure(0。/90。)s were cured at the autoclave, which are reinforced by the two plies of plain weave WR 570A from Hankuk Fiber Co., E glass fibers. Compimide 800 from Boots Technochemie Co., which is a second generation of bismaleimides, was chosen to impregnate the above plain weaves. Accumulation and development of damage, and delamination phenomena of the glass fabric/BMI composites at the three points flexural tests for the ratio between the supporing span and the thickness of the specimen, (L/d) 30,45,60,75,90,105,120 were examined with results of the acoustic emissions, microscopic observation and load-deflection curves. L/d has a significant influences on the above mentioned damage and fracture phenomena..

한국 화이바에서 E glass 섬유로 직조한 plain weave WR 570A를 두장 겹쳐서 Boots Technochemie Co.에서 근자에 개발된 autoclave 성형용 제2세대 bismaleimide 수지인 Compimide 800으로 함침하여 autoclave로 (0°/90°)s에 해당하는 구조를 만들어 삼점굴곡시험하에서 지지간 거리와 시편두께의 비(L/d)가 30,45,60,75,90,105,120 경우에 대한 damage의 축적 및 발달 그리고 delamination 현상 등을 음향방출시험, microscopic observation, load-deflection curve의 변화 등에 의해 규명하였다. L/d는 상기한 여러 가지 damage 현상 및 최종 파단형태에 커다란 영향을 미친다.

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1991; 15(3): 242-250

    Published online Jun 25, 1991