TY - JOUR
T1 - Low-velocity impact behavior and residual tensile strength of CFRP laminates
AU - Zhou, Jianwu
AU - Liao, Binbin
AU - Shi, Yaoyao
AU - Zuo, Yangjie
AU - Tuo, Hongliang
AU - Jia, Liyong
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2019/3/15
Y1 - 2019/3/15
N2 - This paper experimentally studies the low-velocity impact behaviors and residual tensile strength of carbon fiber reinforced plastics (CFRP) laminates. Firstly, the effects of four factors, i.e. impact angle, impactor diameter, the proportion of ply orientation and stacking sequence, on the impact responses of laminates are studied. The damage characteristics are evaluated by dent depth, delamination damage projection area (DDPA) and energy dissipation. Secondly, the tensile responses of the laminates after impact are investigated based on residual tensile strength (RTS). Finally, the correlations between the four damage evaluation criteria, i.e. dent depth, DDPA, energy dissipation and RTS, are sorted out. Experimental results demonstrate that the four factors have significant effects on the impact behaviors of laminates in different ways. The DDPA is negatively correlated with the dent depth of laminates, and the dent depth can be treated as an important reference for the RTS. Besides, a fracture phenomenon, i.e. a clear band of fiber fracture around the impact area after impact, has been observed and discussed.
AB - This paper experimentally studies the low-velocity impact behaviors and residual tensile strength of carbon fiber reinforced plastics (CFRP) laminates. Firstly, the effects of four factors, i.e. impact angle, impactor diameter, the proportion of ply orientation and stacking sequence, on the impact responses of laminates are studied. The damage characteristics are evaluated by dent depth, delamination damage projection area (DDPA) and energy dissipation. Secondly, the tensile responses of the laminates after impact are investigated based on residual tensile strength (RTS). Finally, the correlations between the four damage evaluation criteria, i.e. dent depth, DDPA, energy dissipation and RTS, are sorted out. Experimental results demonstrate that the four factors have significant effects on the impact behaviors of laminates in different ways. The DDPA is negatively correlated with the dent depth of laminates, and the dent depth can be treated as an important reference for the RTS. Besides, a fracture phenomenon, i.e. a clear band of fiber fracture around the impact area after impact, has been observed and discussed.
KW - Impact behaviors
KW - Impactor parameters
KW - Layup patterns
KW - Tensile strength
UR - http://www.scopus.com/inward/record.url?scp=85055869781&partnerID=8YFLogxK
U2 - 10.1016/j.compositesb.2018.10.090
DO - 10.1016/j.compositesb.2018.10.090
M3 - 文章
AN - SCOPUS:85055869781
SN - 1359-8368
VL - 161
SP - 300
EP - 313
JO - Composites Part B: Engineering
JF - Composites Part B: Engineering
ER -