直交異方性 CFRP 積層材의 衡擊損傷에 關한 硏究 = A study on the impact damage of orthotropic CFRP composite laminates

다국어 초록 (Multilingual Abstract)

In this study, When CFRP composite laminates involved difference of stacking sequences and kinds of matrices are subjected to transverse impact, An experimental study was performed by observing the following items; a) interrelations between the impact energy vs. delamination area vs. the residual bending strength.
The results were summarized as follows;
1. It is found that orthotropic laminate materials are all increasing lineally between impact energy and damage delamination area.
2. Delamination development energy of CF/EPOXY laminated materals, that is, slope of delamination area by impact energy is lower than that of CF/PEEK (orthotopic laminated materals).
3. CF/EPOXY specimens D of laminated orientation (0°_4/90°_4)_sym. shows that impact damage of impacted-side compression is higher than that of impacted side tension, whereas CF/PEEK specimen P with the same stacking sequences indicates that impact damage of impacted-side tension is higher than that of impacted-side compression, for delamination buckling is generated at delamination area of interface B subjected to compression.