Affiliation: | a School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, P R China b School of Computing, Engineering and Information Sciences, Northumbria University, Ellison Building, Ellison Place, Newcastle upon Tyne, NE1 8ST, UK c Alstom Power Support APS/TC, Boveristrasse 22, D-68309 Mannheim, Germany |