Damage detection and vibration control of a delaminated smart composite plate

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In this paper, the effects of delamination on the dynamic characteristics of a composite plate are investigated. The refined higher order theory is used to model the smart composite plate in the presence of delaminations. The theory accurately captures the transverse shear deformation through the thickness, which is important in anisotropic composites, particularly in the presence of discrete actuators and sensors and delaminations. Next, the detection of delamination is investigated using the Root Mean Square (RMS) values of the response of the composite plate subject to disturbances. An active control system is designed to minimise the effect of delamination. The pole placement technique is applied to design the closed loop system by utilising piezoelectric actuators. Numerical results show that the RMS information can be used to estimate the location of the delamination. The controller designed makes the delaminated plate behave like a healthy plate model. The controller also reduces the magnitudes of RMS responses due to disturbance.

Original languageEnglish (US)
Pages (from-to)7-15
Number of pages9
JournalAdvanced Composites Letters
Volume9
Issue number1
StatePublished - 2000

Fingerprint

Damage detection
Vibration control
Delamination
Composite materials
Controllers
Piezoelectric actuators
Closed loop systems
Shear deformation
Poles
Actuators
Control systems
Sensors

Keywords

  • Active Vibration Control
  • Damage Detection
  • Delaminations
  • Smart Composite Modelling

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Damage detection and vibration control of a delaminated smart composite plate. / Chattopadhyay, Aditi; Nam, Changho; Kim, Youdan.

In: Advanced Composites Letters, Vol. 9, No. 1, 2000, p. 7-15.

Research output: Contribution to journalArticle

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