基于改进基线重构的复合材料T型接头导波损伤监测

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振动与冲击 ›› 2025, Vol. 44 ›› Issue (11) : 280-287.

故障诊断分析

基于改进基线重构的复合材料T型接头导波损伤监测

刘国强*，王莉，王霞光，刘钢

作者信息 +

Guided wave damage monitoring of composite T-joints based on improved baseline reconstruction

LIU Guoqiang*, WANG Li, WANG Xiaguang, LIU Gang

Author information +

文章历史 +

摘要

结构载荷会影响导波传播，从而会增加导波损伤识别的不确定性，以致可能引起损伤误判。为了减弱结构载荷对导波损伤识别的影响，本文提出了改进的基线重构载荷补偿方法。该方法可以将基线信号相位补偿到与当前信号相位一致。通过铝板静力拉伸实验和复合材料T型接头在拉伸载荷下的损伤监测，对该方法的有效性进行了验证研究。研究结果表明：该方法可以有效地减弱载荷对导波监测信号相位的影响，且能对拉伸载荷作用下复合材料T型接头损伤进行准确地识别。

Abstract

Structural load has significant effects on propagation of guided waves and therefore can increase the diagnostic uncertainty of the guided wave-based damage detection, which may cause the diagnostic error of damage. In order to mitigate the load effect, a load compensation method based on improved baseline reconstruction is developed in this study, which can compensate the phase of baseline signal to the phase of current signal. The effectiveness of the proposed method is validated by the static tensile test of aluminium panel and damage monitoring of composite T-joint under tensile load. The results show that the proposed method can effectively mitigate the load effect on the phase of guide wave signal, and detect the damage of composite T-joint under tensile load accurately.

导出引用

刘国强, 王莉, 王霞光, 刘钢. 基于改进基线重构的复合材料T型接头导波损伤监测[J]. 振动与冲击, 2025, 44(11): 280-287

LIU Guoqiang, WANG Li, WANG Xiaguang, LIU Gang. Guided wave damage monitoring of composite T-joints based on improved baseline reconstruction[J]. Journal of Vibration and Shock, 2025, 44(11): 280-287

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