随着复合材料在武器系统中的广泛应用以及复合材料对环境因素敏感性的突出表现，如何实时地、有效地对恶劣工作环境所导致的复合材料结构损伤(环境损伤)进行诊断，以及实现智能化的结构健康评估已成为刻不容缓的研究工作。本项目以导波理论为基础，以复合材料结构中的环境损伤为对象，以实现定量评估结构健康性为目标，围绕环境因素对导波在复合材料结构中传播机理的影响作用、导波与环境损伤的相互耦合机理、适用于复杂工况的导波信号特征提取方法、建立基于导波的信号特征评价结构健康等级的专家知识库四个方面开展研究。研究方法采用理论研究、数值建模与仿真、试验验证相结合的技术路线，充分重视多学科交叉的理论基础研究。本项目的研究为实现在线监测复合材料结构的环境损伤奠定理论分析基础，为建立高效评定结构健康等级的方法提供技术支持，对推动恶劣工作环境下基于导波的结构损伤诊断与健康评估技术的发展具有重要意义。

With wide application of composite material in weapon system and its remarkable sensitivity to environment, research of how to diagnose environmental damage nondestructively and realize intelligent health evaluation for composite material structure shows its necessity and urgency. Aiming at quantitative structural health evaluation, the research work is promoted to realize the guided-wave-based diagnosis of the structural environmental damage. Considering the influence of complex working environment, the research work contains the transmission property of guided waves in composite material structure, the interaction with environmental damage of individual mode of guided waves, effective feature extraction techniques and the building of data-base which grades structural health based on the extracted wave signal features. Through the association of theory research, numerical modeling and experimental validation, the theory foundation will be built for guided-wave-based nondestructive diagnosis of environmental damage and health evaluation for composite material structure. The research results will provide powerful support for developing guided-wave-based damage identification in complex working environment.