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极值理论在复合材料结构健康监测中的应用研究 被引量:4

Research on Using Extreme Value Theory to Recognize Damage in Structural Health Monitoring for Composite Materials
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摘要 在充分研究极值理论的基础上将其引入复合材料结构健康监测领域,针对该理论的应用提出了损伤特征参数的概念,描述了通过HHT方法计算该参数的过程。随后研究了基于极值理论对多组传感器损伤特征参数值的分布进行分析从而精确损伤发生时特征参数阈值的方法,详细阐释了利用该方法进行损伤定位的过程。实验证明,该方法的应用能够突出损伤的作用,减少非损伤因素的影响,提高系统的辨识能力,从而准确有效地识别出复合材料结构中的损伤。 Extreme value theory is used in the field of structural health monitoring in this article.According to the application of extreme value theory,the concept of damage characteristic parameter is brought forward,and the process to compute it by the method of HHT is described.After that the paper research how to analysis the distribution of the damage characteristic parameters got from several groups of sensors in order to make the threshold value of the damage characteristic parameter more accurately,and parti...
出处 《宇航学报》 EI CAS CSCD 北大核心 2007年第5期1366-1370,共5页 Journal of Astronautics
基金 国家自然基金(90305005) 航空基金(04A52002)
关键词 复合材料 结构健康监测 极值理论 HHT Composite materials Structural health monitoring Extreme value theory HHT
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参考文献10

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