Researchers have designed a metamaterial that is nearly twice as resistant to cracking in one direction versus the other—what they call fracture diode.

This article addresses an improvement of a classification procedure on cracked rotors through Deep learning based convolutional neural networks (CNNs). At first, rotor-bearing system is modeled by the finite element method (FEM), then throughout its start-up, related time-domain responses are calculated numerically. In following, as pre-processing stage, continuous wavelet transform (CWT) and S...