复合材料科学与工程 ›› 2020, Vol. 0 ›› Issue (7): 27-32.

• 基础研究 • 上一篇    下一篇

压电-金属结构复合材料层间损伤检测研究

王旭, 郑艳萍*, 夏小松, 张超禹   

  1. 郑州大学机械与动力工程学院,郑州450001
  • 收稿日期:2019-10-31 出版日期:2020-07-28 发布日期:2020-07-28
  • 通讯作者: 郑艳萍(1975-),女,副教授,硕士导师,主要研究方向为复合材料结构强度及损伤检测,ypzheng@126.com。
  • 作者简介:王旭(1995-),男,硕士研究生,主要研究方向为复合材料结构健康检测。
  • 基金资助:
    河南省高校重点科研项目(20A460023);国家自然科学基金(U1833116)

STUDY ON INTERLAMINATION DAMAGE DETECTION OF COMPOSITE MATERIALS BY USING PZT-METAL STRUCTURE

WANG Xu, ZHENG Yan-ping*, XIA Xiao-song, ZHANG Chao-yu   

  1. School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China
  • Received:2019-10-31 Online:2020-07-28 Published:2020-07-28

摘要: 压电阻抗法(EMI)在复合材料无损检测中已经得到了广泛应用,但其在损伤检测中的精度表现依然不能令人满意。本文基于压电阻抗法,借助有限元软件ANSYS,使用压电片-金属片结构在低频范围内对复合材料板层间损伤进行研究,绘制出距离损伤不同位置处的压电阻抗曲线,计算其损伤指标均方根偏差(RMSD)值,并同传统的单一压电片结构进行对比,证明了压电片-金属片结构对低频近距离损伤具有更高的检测精度。

关键词: 压电阻抗法, 压电片-金属片, 阻抗信号, 均方根偏差, 有限元模型, 复合材料

Abstract: Electro-mechanical impedance (EMI) method has been widely used in nondestructive testing of composite materials, but its accuracy in damage detection is still unsatisfactory. In this paper, based on the electro-mechanical impedance method, the damage of composite laminates is studied in the low frequency range by using the PZT-metal structure with the aid of the finite element software ANSYS. At the same time, the impedance curve of the PZT is plotted with the single-PZT structure as the comparison, and the root mean square deviation (RMSD) value is used as the standard of damage identification. It is proved that the PZT-metal structure has higher detection accuracy in low frequency and short distance from damage.

Key words: EMI, PZT-metal, the real part of impedance, RMSD, FE, composites

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