Table of Contents
Smart Materials Research
Volume 2013 (2013), Article ID 173605, 9 pages
http://dx.doi.org/10.1155/2013/173605
Research Article

Procedure to Use PZT Sensors in Vibration and Load Measurements

1Structural Technologies Division, Dynamics and Adaptive Structures Group, CSIR-National Aerospace Laboratories, Bangalore, Karnataka 560 017, India
2VTU, Belgaum, Karnataka 590 018, India

Received 21 March 2013; Revised 16 September 2013; Accepted 19 September 2013

Academic Editor: Chris Bowen

Copyright © 2013 C. N. Sathyanarayana et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In situ correlation procedure is developed for electromechanically coupled PZT sensors to output the structural responses in standard engineering format, namely, displacement, strain, acceleration, and so forth. In order to implement this idea, we have used the standard sensing devices such as laser displacement sensor, strain gauge, and accelerometer. Aluminum beams and composite plate are employed in the experiments as specimens. The experimental results have shown that the structural reactions at critical locations can be monitored by a dynamically correlated PZT patch sensor, besides measuring the intensity of load in terms of acceleration. Furthermore, the influence of damage on sensor correlation has been evaluated. It is seen that the presence of damage has significantly modified the interpreted engineering parameters from the PZT patch and if they are appropriately correlated with respect to healthy structure, then the occurrence of damage related information will be ascertained. The developed sensor correlation concept therefore may be useful in load monitoring, health monitoring, and structural control applications.