Three-Dimensional Electromechanical Impedance Model. II: Damage Analysis and PZT Characterization

Piezoceramic transducers (PZTs) are extensively used in the nondestructive evaluation of damages in various engineering structures. This paper, the 2nd of a 2-part paper, focuses on the application of a PZT using three-dimensional (3-D) directional sum impedance (DSI). The semianalytical 3-D admittance has been formulated and experimentally validated in the first paper. This part deals with the application of the 3-D DSI model in damage analysis where by damages were numerically simulated for various types of specimens and the DSI admittance signatures were predicted and compared. The deviations of the signature from that of the undamaged state provide an indicator for the health of the structure. This technique is nondestructive in nature, and the damages were quantified using root-mean-square deviation in signatures with respect to the undamaged state signature. In Part I, the properties of the PZT and their influences on admittance signatures were briefly presented. In this part, a thorough investigation was made and the importance of all the PZT properties in damage analysis was presented.

  • Availability:
  • Supplemental Notes:
    • Abstract reprinted with permission from ASCE
  • Authors:
    • Annamdas, Venu Gopal Madhav
    • Soh, C K
  • Publication Date: 2007-1

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01045126
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 9 2007 5:16PM