A Lamb waves based statistical approach to structural health monitoring of carbon fibre reinforced polymer composites.
This research investigates a Lamb-wave based structural health monitoring approach matching an out-of-phase actuation of a pair of piezoceramic transducers at low frequency. The target is a typical quasi-isotropic carbon fibre reinforced polymer aeronautical laminate subjected to artificial, via Teflon patches, and natural, via suitable low velocity drop weight impact tests, delaminations. The performance and main influencing factors of such an approach are studied through a Design of Experiment statistical method, considering both Pulse Echo and Pitch Catch configurations of PZT sensors. Results show that some factors and their interactions can effectively influence the detection of a delamination-like damage.
Department of Mechanical Engineering, Politecnico di Milano, Via La Masa 1, 20156 Milano, Italy. Electronic address: michele.carboni@polimi.it.
Michele
M
Carboni
Department of Mechanical Engineering, Politecnico di Milano, Via La Masa 1, 20156 Milano, Italy.
Andrea
A
Gianneo
Department of Mechanical Engineering, Politecnico di Milano, Via La Masa 1, 20156 Milano, Italy.
Marco
M
Giglio
Analysis of Variance; Carbon fibre reinforced polymer composite; Design of Experiments; Structural health monitoring; Ultrasonic Lamb waves