基于机电阻抗的成像算法用于化学铣削加硬面板的损伤识别

IF 4.6 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
Xie Jiang, Wensong Zhou, Xize Chen, Xin Zhang, Jiefeng Xie, Tao Tang, Yuxiang Zhang, Zhengwei Yang
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引用次数: 0

摘要

化学铣削加劲板(CMSP)上的多个交叉加劲板限制了主动健康监测方法在其上的应用。本文提出了一种基于机电阻抗(EMI)和概率加权的成像算法,以实现对 CMSP 损伤的定量评估和定位。所提出的算法通过系数补偿传感器性能的差异,无需通过事先实验确定算法的关键参数。本文首先通过有限元法研究了超声导波(GW)和 EMI 在 CMSP 上的适用性。基于 EMI 和平均绝对百分比偏差 (MAPD)、所选损伤指标 (DI),提出了一种概率加权损伤成像算法,并进行了实验验证。结果表明,由于加强筋对 GW 的反射和衰减效应,损伤散射波的信号特征受到污染,因此很难通过 DIs 从 GW 信号中定量描述损伤特征。MAPD 与损伤程度呈正相关,并且在表征相同工作条件下不同 PZT 的信号时具有一致性。实验验证了所提算法的可行性和准确性,显示了其强大的工程应用能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

An Electromechanical Impedance-Based Imaging Algorithm for Damage Identification of Chemical Milling Stiffened Panel

An Electromechanical Impedance-Based Imaging Algorithm for Damage Identification of Chemical Milling Stiffened Panel

The multiple intersecting stiffeners on the chemical milling stiffened panel (CMSP) limit the application of active health monitoring methods on it. An imaging algorithm based on electromechanical impedance (EMI) and probability-weighting is proposed to achieve quantitative evaluation and localization of the damage on CMSP. The proposed algorithm compensates for the difference in sensor performance with coefficients and there is no need to determine the key parameters of the algorithm through prior experiments. In the paper, the applicability of ultrasonic guided wave (GW) and EMI on CMSP was first studied through the finite element method. Based on EMI and the mean absolute percentage deviation (MAPD), the selected damage indicator (DI), a probability-weighted damage imaging algorithm are proposed and experimentally verified. The results indicate that due to the reflection and attenuation effects of stiffeners on GW, the signal characteristics of damage scattering waves are contaminated, making it difficult to quantitatively characterize the damage from GW signals through DIs. MAPD is positively correlated with the damage degree and has consistency in characterizing the signal of different PZTs under the same working condition. The feasibility and accuracy of the proposed algorithm are verified through experiments which show a strong engineering application capability.

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来源期刊
Structural Control & Health Monitoring
Structural Control & Health Monitoring 工程技术-工程:土木
CiteScore
9.50
自引率
13.00%
发文量
234
审稿时长
8 months
期刊介绍: The Journal Structural Control and Health Monitoring encompasses all theoretical and technological aspects of structural control, structural health monitoring theory and smart materials and structures. The journal focuses on aerospace, civil, infrastructure and mechanical engineering applications. Original contributions based on analytical, computational and experimental methods are solicited in three main areas: monitoring, control, and smart materials and structures, covering subjects such as system identification, health monitoring, health diagnostics, multi-functional materials, signal processing, sensor technology, passive, active and semi active control schemes and implementations, shape memory alloys, piezoelectrics and mechatronics. Also of interest are actuator design, dynamic systems, dynamic stability, artificial intelligence tools, data acquisition, wireless communications, measurements, MEMS/NEMS sensors for local damage detection, optical fibre sensors for health monitoring, remote control of monitoring systems, sensor-logger combinations for mobile applications, corrosion sensors, scour indicators and experimental techniques.
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