A Low-Cost and Field Portable Electromechanical (E/M) Impedance Analyzer for Active Structural Health Monitoring

Abstract

This paper presents the implementation of a DAQ-card-based, low-cost impedance analyzer for active structural health monitoring. Two excitation signal sources for efficient and accurate measurement of electromechanical (E/M) impedance were digitally synthesized. To compare these two signal sources for impedance measurement, a simulation for measuring the impedance spectrum of a free piezoelectric wafer active sensor (PWAS) was conducted and then followed up with free PWAS impedance spectrum measurement experiments. Finally, the performance of this novel impedance analyzer was compared to that of the HP4194A impedance analyzer using PWAS to detect a disbond on an aluminum spacecraft test panel.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2005
Accession Number
ADA519067

Entities

People

  • Buli Xu
  • Victor Giurgiutiu

Organizations

  • University of South Carolina

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical

DTIC Thesaurus Topics

  • Analyzers
  • Damage Detection
  • Engineering
  • Frequency
  • Frequency Domain
  • Generators
  • Impedance
  • Laboratory Equipment
  • Materials
  • Measurement
  • Mechanical Engineering
  • Monitoring
  • Simulations
  • South Carolina
  • Spectra
  • Structural Health Monitoring
  • Test Methods

Readers

  • Microwave Engineering.
  • Optical Fiber Sensing and Electromagnetic Propagation.
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems
  • Space
  • Space - Hall-Effect Thruster