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Application of vibration based technique in health monitoring of multi-stable laminated composites

Ghaffari, H ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1109/TIC-STH.2009.5444511
  3. Abstract:
  4. This paper deals with the problem of vibration based health monitoring (VHM) in multi-stable asymmetrical laminated composite structures. Multi-stable asymmetrical laminates can be snapped between two or more geometries. The ability of snapping between two or more geometries in multistable composite structures makes them vulnerable to delaminate. Because of these reason early detection of damage in these systems during their service life is receiving increasing attention. In the present work, an efficient and accurate finite element model (FEM) based on layer-wise theory by considering the electro-mechanical coupling effect has been developed to investigate the actuation and /or sensing mechanism of extensional piezoelectric surface bonded as patches in a composite laminate. Then the developed FEM has been implemented in an asymmetrical laminate to investigate the frequency and voltage responses of both intact and damaged models by considering the delamination growth. ©2009 IEEE
  5. Keywords:
  6. Composite laminate ; Delamination growth ; Early detection ; Finite element models ; Health monitoring ; Layer-wise theory ; Multistable ; Sensing mechanism ; Voltage response ; Damage detection ; Delamination ; Finite element method ; Frequency response ; Laminated composites ; Laminating ; Structure (composition) ; Structures (built objects) ; Technological forecasting ; Temperature indicating cameras ; Structural health monitoring
  7. Source: TIC-STH'09: 2009 IEEE Toronto International Conference - Science and Technology for Humanity, 26 September 2009 through 27 September 2009, Toronto, ON ; 2009 , Pages 170-175 ; 9781424438785 (ISBN)
  8. URL: http://ieeexplore.ieee.org/document/5444511