This study addresses the question for delamination detection in composite laminate beams. A vibration-based approach towards the problem is adopted. This work proposes a novel concept for delamination monitoring in composites based on a nonlinear signal correlation. Experiments are performed on undamaged and delaminated beam and their free decay response is used. The dynamic response is registered by an accelerometer in two different points to use the correlation between the two signals as a metric for delamination identification. Experiments show that the proposed method accurately detects and localizes delamination in a carbon fiber composite beam.
VIBRATION-BASED DELAMINATION DETECTION IN COMPOSITE BEAMS BASED ON NONLINEAR SIGNAL ANALYSIS / R.Palazzetti; I.Trendafilova; A.Zucchelli. - ELETTRONICO. - (2012), pp. 1-9. (Intervento presentato al convegno 15th European Conference on Composite Materials tenutosi a Venice nel 24-28 June 2012).
VIBRATION-BASED DELAMINATION DETECTION IN COMPOSITE BEAMS BASED ON NONLINEAR SIGNAL ANALYSIS
PALAZZETTI, ROBERTO;ZUCCHELLI, ANDREA
2012
Abstract
This study addresses the question for delamination detection in composite laminate beams. A vibration-based approach towards the problem is adopted. This work proposes a novel concept for delamination monitoring in composites based on a nonlinear signal correlation. Experiments are performed on undamaged and delaminated beam and their free decay response is used. The dynamic response is registered by an accelerometer in two different points to use the correlation between the two signals as a metric for delamination identification. Experiments show that the proposed method accurately detects and localizes delamination in a carbon fiber composite beam.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
