Influence of laminated orientation on the mechanical and thermal characteristics of carbon-fiber reinforced plastics

서지정보

ㆍ발행기관 : 한국탄소학회 ㆍ수록지정보 : Carbon Letters / 16권 / 4호
ㆍ저자명 : Hee-Jae Shin, Lee-Ku Kwac, Min-Sang Lee, Hong-Gun Kim

목차

1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
References

한국어 초록

Rapid industrial development in recent times has increased the demand for light-weight
materials with high strength and structural integrity. In this context, carbon fiber-reinforced
plastic (CFRP) composite materials are being extensively used. However, laminated CFRPs
develop faults during impact because CFRPs are composed of mixed carbon fiber and epoxy.
Moreover, their fracturing behavior is very complicated and difficult to interpret. In
this paper, the effect of the direction of lamination in CFRP on the absorbed impact energy
and impact strength were evaluated, including symmetric ply (0°/0°, –15°/+15°, –30°/+30°,
–45°/+45°, and –90°/+90°) and asymmetric ply (0°/15°, 0°/30°, 0°/45°, and 0°/90°), through
drop-weight impact tests. Further, the thermal properties of the specimens were measured
using an infrared camera. Correlations between the absorbed impact energy, impact strength,
and thermal properties as determined by the drop-weight impact tests were analyzed. These
analyses revealed that the absorbed impact energy of the specimens with asymmetric laminated
angles was greater than that of the specimens with symmetric laminated angles. In
addition, the asymmetry ply absorbed more impact energy than the symmetric ply. Finally,
the absorbed impact energy was inversely proportional to the thermal characteristics of the
specimens.

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