[1]李成,陈功轩,铁瑛,等.基于压电阻抗技术的铝梁损伤定位试验研究[J].郑州大学学报(工学版),2016,37(04):82-85,96.[doi:10.13705/j.issn.1671-6833.2016.04.018]
　Li Cheng,Chen Gongxuan,Tie Ying,et al.Experimental Research of Damage Location in Aluminum Beam Base on EMI Technique[J].Journal of Zhengzhou University (Engineering Science),2016,37(04):82-85,96.[doi:10.13705/j.issn.1671-6833.2016.04.018]
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基于压电阻抗技术的铝梁损伤定位试验研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
37
期数:
2016年04期
页码:
82-85,96
栏目:
出版日期:
2016-08-31

文章信息/Info

Title:
Experimental Research of Damage Location in Aluminum Beam Base on EMI Technique
作者:
李成; 陈功轩; 铁瑛; 牛冬冬
郑州大学机械工程学院,河南郑州,450001
Author(s):
School of Mechanical Engineering, Zhengzhou University, Zhengzhou, Henan 450001
关键词:
压电阻抗技术; 无损检测; 损伤定位; 相关系数; 阻抗
Keywords:
DOI:
10.13705/j.issn.1671-6833.2016.04.018
文献标志码:
A
摘要:
为了识别铝梁结构损伤位置,运用压电阻抗技术对铝梁进行了损伤定位试验研究.用精密阻抗分析仪在不同频率段下对无损及自制损伤孔两种情况下的阻抗实部信号进行测量,并用pearson相关系数处理试验数据,通过多次试验找到了阻抗实部相关系数值与压电陶瓷传感器(piezoceramic transducer,PZT)和损伤之间距离近似成线性关系的适测频率段.并在适测频率段内进行铝梁损伤定位试验,损伤孔及裂纹位置的探测值与实际值基本吻合,从而证实了该方法应用于铝梁损伤定位的有效性,可为无损检测的损伤定位提供参考.
Abstract:
In order to identify the damage location of aluminum beam structures, piezoelectric impedance technology was used to conduct damage localization experiments on aluminum beams. Precision impedance analyzers were used to measure the impedance real part signals of non-destructive and self-made damage holes at different frequency bands, and Pearson correlation coefficients were used to process the experimental data, Through multiple experiments, the impedance real part correlation coefficient values were found to be approximately linearly related to the distance between the piezoelectric ceramic sensor (PZT) and the damage in the applicable frequency range. Aluminum beam damage localization experiments were conducted within the applicable frequency range, and the detection values of damage holes and crack positions were basically consistent with the actual values. This confirms the effectiveness of this method in aluminum beam damage localization and can provide reference for non-destructive testing of damage localization

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