Paper Title:
Dynamics of Structures with Piezoelectric Sensors and Actuators for Structural Health Monitoring
  Abstract

The dynamic analysis of structures with piezoelectric sensors and actuators is used in this paper to establish a method for crack detection in aerospace structures. Piezoelectric strips used as sensors and actuators are bonded on both sides of a thin structure which executes flexural oscillations. The differential voltage outputs of the piezoelectric sensors are used to detect the presence of cracks in the structure. The structural analysis uses a finite element formulation for the piezoelectric strips coupled with the structure and a nonlinear model for the cracks. This paper presents first the results of the dynamic analysis in the frequency domain of healthy and cracked plates undergoing forced flexural vibrations generated by a pair of piezoelectric actuators submitted to an oscillatory voltage excitation. The peaks in the differential voltage output obtained in the case of a cracked plate at several frequencies during the frequency sweep were found to be indicative measures for the presence of a crack in the structure. The results of the dynamic analysis in the time domain have also shown that this method has a good sensitivity in detecting cracks in the structures.

  Info
Periodical
Edited by
L. Garibaldi, C. Surace, K. Holford and W.M. Ostachowicz
Pages
493-498
DOI
10.4028/www.scientific.net/KEM.347.493
Citation
D. Mateescu, Y. Han, A. Misra, "Dynamics of Structures with Piezoelectric Sensors and Actuators for Structural Health Monitoring ", Key Engineering Materials, Vol. 347, pp. 493-498, 2007
Online since
September 2007
Export
Price
$35.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: F. Ricci, F. Franco, Nicola Montefusco
Abstract:In this paper, the mechanisms of propagation of the damage in aluminum panels repaired with bonded composite patches of different mechanical...
597
Authors: Jun Ru Yang, Gong Ling Chen, Li Li Zhang, Jing Sun
VI. Analytical and Numerical Methods for Materials Processing
Abstract:Based on the theoretical study on the tip stress intensity factor (SIF) of the crack normal to and dwelling on the interface, using the...
525
Authors: Cristian Necula, C. Daniel Comeagă, Octavian Donţu
Chapter 2: Design, Modelling and Simulation
Abstract:In future, demand on portable electronic devices will create the requirements of enduring recharged sources of power. A non-environmental...
125
Authors: Ann Maria Thomas, Koovaparambil Ramunny Pradeep, Praveen Mathew
Abstract:Structural health monitoring (SHM) is an inevitable component of modern civil and aerospace structures. It essentially detects the damages in...
255