1 LASI-Associate Laboratory of Intelligent Systems, Institute for Polymers and Composites, Polymer Engineering Department, School of Engineering of the University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal.
2 Geo-Intelligence Laboratory, Ingram School of Engineering, Texas State University, San Marcos, TX 78666, USA.
3 Center of Mathematics (CMAT), University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal.
4 CEFT, Department of Mechanical Engineering, University of Porto, 4200-465 Porto, Portugal.