Investigation of actuator debonding effects on active control in smart composite laminates

Title
Investigation of actuator debonding effects on active control in smart composite laminates
Authors
윤길호
Keywords
Actuator debonding; smart composite laminate; active control; control performance
Issue Date
2015-04
Publisher
HINDAWI PUBLISHING CORPORATION
Citation
ADVANCES IN MECHANICAL ENGINEERING, v. 7, NO 4, Page. 1-11
Abstract
This article presents a numerical study of active vibration control of smart composite laminates in the presence of actuator debonding failures. A comparison between the smart composite laminates with healthy actuator and various partially debonded actuator cases is performed to investigate the debonding effects on the vibration suppression. The improved layerwise theory with Heaviside's unit step function is adopted to model the displacement field with actuator debonding failure. The higher order electric potential field is adopted to describe the potential variation through the thickness. The finite element method-based formulations are derived using the plate element, taking into consideration the electro-mechanical coupling effect. The reduced-order model is represented by the state-space form and further for the vibration suppression using a simple constant gain velocity feedback control strategy. For the purpose of demonstration, a 16-layer cross-ply substrate laminate ([0/90]4s) is employed for the numerical study. The results show that the actuator debonding affects the closed-loop frequencies, active damping ratios, and efficiency of vibration suppression.
URI
http://ade.sagepub.com/content/7/4/1687814015578363http://hdl.handle.net/20.500.11754/23797
ISSN
1687-8132; 1687-8140
DOI
http://dx.doi.org/10.1177/1687814015578363
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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