Aluminum 1 Convolution 1 Convolutional neural network 1 Damage classification 1 Damage detection 1 Damage localization 1 Data acquisition 1 Environmental conditions 1 Extraction 1 Feature extraction 1 Gaussian mixture model 1 Gaussian mixture model (GMM) 1 Guided electromagnetic wave propagation 1 Nondestructive examination 1 Operating condition 1 Structural health monitoring 1 Temperature distribution 1 Ultrasonic non-destructive testing Ultrasonics 1 convolutional neural networks (CNN) 1 damage localisation 1 structural health monitoring (SHM) 1 ultrasonic non-destructive testing (NDT) 1