곡률과 적층배향이 다른 CFRP 적층쉘의 내충격특성 = The Resistant Impact Characteristics of CFRP Laminated Shells different to Curvatures and Stacking Orientation

다국어 초록 (Multilingual Abstract)

CFRP composite is widely used in various industries because it has excellent mechanical properties under static load conditions. In particular, the CFRP composite is widely used in the aerospace field due to its superior wear resistance and heat resistance.
However, under the impact load, temperature and moisture conditions, there is a lot of decrease in strength.
In this study, impact experiment were conducted using high-speed impact testing device to examine fracture and dissection of fiber and matrix generated inside the CFRP composite according to the layered composition.
In order to establish the conditions of the various specimens, a specimen with the stacking conditions of orthotropic ([0°3/90°3]s) and isotropic ([+45°3/-45°3]s) was constructed.
It was found that the orthogonal divergence test specimen was more than twice as likely to increase the critical tube energy than the isotropic test specimen.

참고문헌 (Reference)

1 금진화, "평직CFRP 복합재료의 섬유 배열각도별 CFRP피로 균열 성장 평가" 대한기계학회 34 (34): 717-723, 2010

2 김윤해, "복합재료의 수분에 의한 열화 및 회복 메커니즘에 관한 연구" 한국복합재료학회 21 (21): 8-14, 2008

3 황우채, "단면형상이 다른 Al/CFRP 혼성박육부재의 축압궤특성" 대한기계학회 38 (38): 959-965, 2014

4 Moom, C. K, "luence of Moisture Absorption on the Mechanical Properties in the Laminated Composites" 14 (14): 90-99, 2000

5 Cantwell, W. J, "The high velocity impact response of composite and FML-reinforced sandwich structures" 63 : 1-20, 2003

6 Farley, G. L, "The Effects of Crushing Speed on the Energy -Absorption Capability of Composite Tubes" 1314-1329, 1991

7 Im, K. H, "Influence of Stacking Composition on Fatigue Bending Strength in CFRP Composite Laminates subjected to Impact Loading" 4 (4): 147-155, 1996

8 Caprino, G, "Indentation and penetration of carbon fibre reinforced plastic laminates" 34 (34): 319-325, 2003

9 Yasuhiro, T, "Fracture Behavior of CFRPs impacted by relatively hugh-velocity steel sphere" 28 : 627-642, 2003

10 Symons, Digby D, "Characterizations of indentation damage in 0/90 lay-up T300/914 CFRP" 60 (60): 391-401, 2000

11 Farley, G. L, "Analogy of the Effect of Materials and Geometrical Variables on Energy-Absorption Capability of Composite Tubes" 78-89, 1992

12 Cho, Y. J, "A study on the penetration characteristics of carbon fiber reinforced composite laminate shells" Chosun university 2006