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Differentiating Structural Damage From Piezo-Fibre-Based Sensor Damage in Multifunctional Composites

[+] Author Affiliations
Mohammad Mehdizadeh, Sabu John, Chun H. Wang

RMIT University, Bundoora, VIC, Australia

Viktor Verijenko

Defense Materials and Technology Centre (DMTC) Ltd., Hawthorne, VIC, Australia

Wayne Rowe, Kamran Ghorbani, Amir Galehdar

RMIT University, Melbourne, VIC, Australia

Paul J. Callus

Defence Science and Technology Organisation (DSTO), Fishermans Bend, VIC, Australia

Paper No. SMASIS2011-5086, pp. 119-128; 10 pages
doi:10.1115/SMASIS2011-5086
From:
  • ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1
  • Scottsdale, Arizona, USA, September 18–21, 2011
  • ISBN: 978-0-7918-5471-6
  • Copyright © 2011 by ASME and The Commonwealth of Australia

abstract

Structural health monitoring systems (SHMS) are increasingly being considered for implementation in a wide range of industries, including transport, civil infrastructure, and energy production. As the application of SHM systems increase, it will be increasingly important to quantify the durability, reliability, and reparability of the SHM system. This paper investigates the electrical and electro-mechanical characteristics of piezoelectric sensors in an attempt to distinguish sensor failure from structural damage. This study involved the measurements of pertinent electrical properties for three various types of advanced piezoelectric sensors under fatigue loading. Changes in the capacitance and inductance of these sensors have been recorded, highlighting the deleterious structural changes in the sensor itself without any discernible change in the structure being monitored.

Copyright © 2011 by ASME and The Commonwealth of Australia

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