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온도변화가 CFRP 적층재의 충격후 잔류굽힘강도에 미치는 영향
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  • 온도변화가 CFRP 적층재의 충격후 잔류굽힘강도에 미치는 영향
  • The Effects of Temperature Change on the Residual Bending Strength of CFRP Laminates after Impact
저자명
나승우,정종안,양인영,Ra. Seung-woo,Jung. Jong-an,Yang. In-young
간행물명
한국안전학회지
권/호정보
2005년|20권 1호|pp.75-80 (6 pages)
발행정보
한국안전학회
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정기간행물|
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기타
이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

In this paper, when CF/EPOXY laminates for high efficiency space structure are subjected to FOD(Foreign Object Damage), the effects of temperature change on the impact damages(inter laminar separation and transverse crack) of CF/EPOXY laminates and the relationship between residual life and impact damages ale experimentally investigated. Composite laminates used in this experiment are CF/EPOXY orthotropic laminated plates, which have two-interfaces $[0^{circ}_6/90^{circ}_6]S$ and four-interfaces $[0^{circ}_3/90^{circ}_6/0^{circ}_3]S$. CF/EPOXY specimens with impact damages caused by a steel ball launched from the air gun were observed by the scanning acoustic microscope under room and high temperatures. In this experimental results, various relations were experimentally observed including the delamination area vs. temperature change, the bending strength vs. impact energy and the residual bending strength vs. impact damage of CF/EPOXY laminates. And as the temperature of CF/PEEK laminates increases, the delaminaion areas of impact-induced damages decrease linearly. A linear relationship between the impact energy and the delamination areas were observed. As the temperature of CF/PEEK laminates increases, the delamination areas decrease because of higher initial delaminatin damage energy.