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.

这项研究致力于非压接织物（NCF），2D平纹编织（2D-PW）和3D正交平纹编织（ORT-PW）碳/环氧树脂层压板的损伤特性，这些复合材料在多次冲击载荷后受到压缩，使用声发射（AE）。超声C扫描图像显示，在ORT-PW体系结构中，单次撞击和3次撞击引起的层间损伤区域分别比NCF和2D-PW体系结构小3倍和2倍。然后，将受冲击的样品承受面内压缩载荷。为了比较不同体系结构的性能，提出了两种指标，一种基于机械响应，另一种基于层压板的AE性能。这些指标表明，ORT-PW在所有架构中均具有最佳性能。最后，