한국정밀공학회 2013년도 춘계학술대회논문집
서론
1.
. , , .1)~3) , , CFRP CFRP . cross head cross head . , CFRP ( , ), .시험편
2.
( ) Carbon Fiber/Epoxy Resin . Fig.1 Table 1 . , CFRP (2 , 4 , 6 ) 90°, 0° .Table 1 Comparison of measured roughness data
(a) Circular member (b) Square member Fig. 1 Configuration of CFRP Specimen
계면수 및 충격속도 변화에 따른
CFRP
구조부재의 충격특성
A Study on Impact Characteristics of CFRP Structure member
According to Interface number and Impact Velocity
*
여인구
1,
#양인 영
2,
최주호
1,
정 종안
3*I. G. YEO
1,
#I. Y. YANG([email protected])
2, J. H. CHOI
2, J. A. JUNG
31조선대학교 첨단부품소재공학과, 2조선대학교 기계설계공학과, 3송원대학교 기계자동차학과
흡수에너지 충격속도
Key words : CFRP(Carbon Fiber Reinforced Plastic), Absorbed Energy( ), Impact velocity( )
Fiber (Carbon) Resin (Epoxy #2500) Prepreg sheet Density [kg/m3] 1.83×103 1.24×103 － Poisson's ratio － － 0.3 Young's modulus [Gpa] 240 3.60 132.7 Tensile stress[Gpa] 4.89 0.08 0.3 Resin content [% Wt] － － 33
1307
한국정밀공학회 2013년도 춘계학술대회논문집
압궤실험
3.
. . - -- (1)
0PdS
E
a (1) Ea , P , S .에너지 흡수특성
4.
CFRP CFRP , CFRP side Data . Fig. 3 CFRP .(a) Square member (b) Circular member Fig. 3 Relationship between interface number of CFRP and Total absorbed energy for CFRP member according
to Impact velocity Fig. 3 ○ △ □, , 90° ● ▲ ■, , 0° . CFRP 223.4J, 274.4J 372.4J . CFRP CFRP 419.44J, 529.2J 611.52J 3 . CFRP 2 6 , 90° 0° 2 18.32%, 6 12.53% 6 2 . 4 . CFRP 2, 6 CFRP 2 41.66%, 6 39.97% . , 2 .
결론
5.
CFRP CFRP 2 90° 0° 90° 2ply 0° , 6 90° .참고문헌
1. Kim, Y. N., "Axial Collapse Characteristics of CFRP Composite Thin-wall Structures for Lightweight of Vehicles," A Thesis for a Doctorate. Chosun University, Republic of Korea. 2002. 2. Farley, G. L. and Jones., R. M., "Crushing
Characteristics of Continuous Fiber-Reinforced Composite Tubes," Journal of composite Materials, Vol26, pp. 37~50, 1992.
3. Lee, K. S., "Evaluation of Safety Performance on Lightweight Vehicle Structural Members for the use of Impact Absorption," A Thesis for a Doctorate. Chosun University, Republic of Korea. 2008.
