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针对典型船用复合材料结构的损伤监测问题，提出了一种复合材料损伤位置监测新方法，并构建了静力加载载荷和损伤扩展系数的关系。针对损伤位置监测，基于信号频谱和相关系数，提出了一种基于贝叶斯的损伤概率成像方法，并提出了多频率加权的损伤成像更新方法。针对损伤扩展研究，根据超声导波信号的时域信号特征和双曲正切函数构建了3种损伤扩展系数，获得了不同静力加载载荷下的损伤扩展系数。实验结果表明，基于贝叶斯的损伤概率成像方法可以实现损伤位置的精确定位；损伤扩展系数随载荷增加的变化规律，为典型复合材料结构的损伤扩展提供了技术支持。
Abstract：Aiming at the damage monitoring problem of typical marine composite material structures, a new method for monitoring the damage location of composite materials is proposed, and the relationship between static loading load and damage expansion coefficient is established. For damage location monitoring, based on signal spectrum and correlation coefficient, a Bayesian-based damage probability imaging method is proposed,and a multi frequency weighted damage imaging update method is proposed. For damage expansion research,three damage expansion coefficients are constructed according to the time-domain signal characteristics of ultrasonic guided waves and hyperbolic tangent function, and the damage expansion coefficients under different static loading loads are obtained. Experimental results show that the Bayesian-based damage probability imaging method can accurately locate the damage location; the variation law of damage expansion coefficient with increasing load provides technical support for the damage expansion of typical composite material structures.
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基本信息:
DOI：10.15926/j.cnki.issn1672-6871.2025.04.004
中图分类号:U661.4;TB33
引用信息:
[1]许龙涛,张尧,周志伟等.复合材料损伤位置监测新方法及损伤扩展研究[J].河南科技大学学报(自然科学版),2025,46(04):24-33+87+119.DOI:10.15926/j.cnki.issn1672-6871.2025.04.004.
基金信息:
国家自然科学基金项目(12402070); 河南科技大学博士科研基金项目(13480029)