03.1 - Materials issues, Fatigue and Damage Tolerance
INSTANTANEOUS BASELINE MULTIPLE DAMAGE DETECTION AND LOCALIZATION IN AN ALUMINIUM PLATE USING LAMB WAVES
B. Alem¹, A. Abedian¹, M. Nasiri¹; ¹Sharif University of Technology, Iran
In recent years, new Structural Health Monitoring (SHM) methodologies with a concept of “instantaneous baseline damage detection” are being developed by many researchers. In this context, this paper proposes new method to identify multiple damage in the aluminum plate. For this goal use from spars PZWS sensor network to generate and received guided waves. Ultrasonic waves are generated and measured from all possible different pairs of excitation and sensing transducers. For feature extraction of received signals used from continues wavelet transform. A probabilistic damage diagnostic algorithm based on correlation analysis was investigated to locate single or multiple damages. In this study, the method is validated using commercial finite element software to model the presence of 10 ultrasonic transducers bonded onto an aluminum plate.