TY - JOUR
T1 - Damage assessment of NCF, 2D and 3D Woven Composites under Compression After Multiple-Impact using Acoustic Emission
AU - Saeedifar, Milad
AU - Saleh, Mohamed Nasr
AU - El-Dessouky, Hassan M.
AU - Freitas, Sofia Teixeira De
AU - Zarouchas, Dimitrios
PY - 2020/5
Y1 - 2020/5
N2 - This study is devoted to the damage characterization of Non-Crimp Fabric (NCF), 2D plain-woven (2D-PW) and 3D orthogonal plain-woven (ORT-PW) carbon/epoxy laminates, subjected to compression after multiple-impact loading, using Acoustic Emission (AE). The ultrasonic C-scan images showed that the interlaminar damage area induced by the single and 3-impact in ORT-PW architecture is 3 and 2 times smaller than NCF and 2D-PW architectures respectively. The impacted specimens were then subjected to the in-plane compression load. Two indices, one based on the mechanical response and another one based on the AE behavior of the laminates, were proposed to compare the performance of different architectures. These indices showed that the ORT-PW had the best performance among all the architectures. Finally, AE was used to distinguish the different damage mechanisms including: matrix cracking, intra and inter-yarn debonding, defected-fiber breakage, intact-fiber breakage and z-binder fiber breakage in the CAI tests of the architectures.
AB - This study is devoted to the damage characterization of Non-Crimp Fabric (NCF), 2D plain-woven (2D-PW) and 3D orthogonal plain-woven (ORT-PW) carbon/epoxy laminates, subjected to compression after multiple-impact loading, using Acoustic Emission (AE). The ultrasonic C-scan images showed that the interlaminar damage area induced by the single and 3-impact in ORT-PW architecture is 3 and 2 times smaller than NCF and 2D-PW architectures respectively. The impacted specimens were then subjected to the in-plane compression load. Two indices, one based on the mechanical response and another one based on the AE behavior of the laminates, were proposed to compare the performance of different architectures. These indices showed that the ORT-PW had the best performance among all the architectures. Finally, AE was used to distinguish the different damage mechanisms including: matrix cracking, intra and inter-yarn debonding, defected-fiber breakage, intact-fiber breakage and z-binder fiber breakage in the CAI tests of the architectures.
KW - Carbon fibers
KW - 3-Dimensional reinforcement
KW - Acoustic emission
KW - Compression after impact
KW - A. Carbon fibers
KW - B. Compression after impact
KW - A. 3-Dimensional reinforcement
KW - D. Acoustic emission
UR - http://www.scopus.com/inward/record.url?scp=85079665266&partnerID=8YFLogxK
U2 - 10.1016/j.compositesa.2020.105833
DO - 10.1016/j.compositesa.2020.105833
M3 - Article
SN - 1359-835X
VL - 132
SP - 105833
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
M1 - 105833
ER -