基于PCA-ED的压电阻抗损伤指标提取方法  

PCA-ED-Based Piezoelectrical Resistance Damage Index Extraction Method

作　　者：鄢灵龙 俞跃[2,4] 王强 胡斌[2,4] 谷小红[1] YAN Linglong;YU Yue;WANG Qiang;HU Bin;GU Xiaohong(College of Mechanical and Electrical Engineering,China Jiliang University,Hangzhou 310018,China;China Special Equipment Inspection And Research Institute,Beijing 100029,China;College of Quality and Safety Engineering,China Jiliang University,Hangzhou 310018,China;Zhongte Inspection Yunzhi Security Technology(Jiaxing)Co.,Ltd.,Jiaxing 314001,China)

机构地区：[1]中国计量大学机电工程学院,浙江杭州310018 [2]中国特种设备检测研究院,北京100029 [3]中国计量大学质安工程学院,浙江杭州310018 [4]中特检云智安全科技(嘉兴)有限公司,浙江嘉兴314001

出　　处：《压电与声光》2023年第4期635-639,共5页Piezoelectrics & Acoustooptics

摘　　要：基于压电阻抗技术(EMI)进行碳纤维复合材料(CFRP)损伤实验研究,针对传统损伤指标均方根偏差(RMSD)、平均绝对偏差(MAPD)和相关系数偏差(CCD)对损伤的敏感度不高,易造成误判的问题,该文提出了一种结合主成分分析(PCA)与欧式距离(ED)的新损伤指标PCA-ED,并通过设计实验验证其对损伤的敏感性。搭建了CFRP损伤检测实验平台,设计了不同的损伤工况,测量不同损伤状态下压电换能器的电导曲线,使用PCA-ED与传统损伤指标进行损伤定量分析。实验结果表明,与传统损伤指标相比,PCA-ED指标对CFRP的损伤敏感度高。Based on the electro-mechanical impedance(EMI)technique,the experimental study on the damage of the carbon fiber reinforced polymer(CFRP)is carried out.To address the problem that the damage sensitivity of the traditional damage index root mean square deviation(RMSD),mean absolute percent deviation(MAPD)and correlation coefficient deviation(CCD)is not high,which is easy to cause misjudgment,a new damage index combining principal component analysis(PCA)and European distance(ED)(PCA-ED)is proposed in this paper,and its sensitivity to damage is verified by the designed experiments.The CFRP damage detection experimental platform was built,different damage conditions were designed,and the conductivity curves of piezoelectric transducers under different damage states were measured.The quantitative analysis of damage was carried out by using PCA-ED versus the traditional damage index.The experimental results showed that the PCA-ED index had higher sensitivity to CFRP damage than the traditional damage index.

关 键 词：压电阻抗技术 主成分分析 欧式距离 损伤敏感度 碳纤维复合材料 损伤指标 

分 类 号：TN384[电子电信—物理电子学] TB332[一般工业技术—材料科学与工程]