A physics-based acoustic emission energy method for mixed-mode impact damage prediction of composite laminates

声发射 复合材料层合板 模式(计算机接口) 复合数 材料科学 能量(信号处理) 复合材料 声学 物理 计算机科学 量子力学 操作系统
作者
Jingjing He,Fan Yang,Haixu Wang,Xiaojun Sun,Yu Zhu,Yaokun Wang,Xuefei Guan
出处
期刊:Ultrasonics [Elsevier BV]
卷期号:: 107490-107490
标识
DOI:10.1016/j.ultras.2024.107490
摘要

In-service composite laminates are susceptible to impact-induced damage, which can substantially reduce its integrity and service life. The damage prediction remains a great challenge due to mixed damage modes and varying damage patterns. This study develops a novel acoustic emission (AE) energy method for predicting damage areas under three typical damage modes. Laboratory testing of composite laminate specimens subject to quasi-static indentation is performed in conjunction with in-situ AE monitoring to acquire AE data. By bridging two sets of energy formulations developed, namely, the one that correlates the damage area and the released strain energy of each damage mode and another that relates the released strain energy to the AE energy, an analytical model for predicting damage areas using AE energy components is derived. Proper signal procedure procedures are established to extract the energy components from AE monitoring data, and numerical and testing data are used to calibrate the model parameters. The effectiveness of the proposed model is further validated by comparing the prediction results of the damage areas with the actual damage areas of specimens tested under different indentation depths. The result indicates that the proposed AE energy method can yield reliable predictions of the damage area under mixed damage modes.

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