1. Research Associate, Dept. of Mechanical and Aerospace Engineering, Univ. of Strathclyde, Glasgow G1 1XQ, UK (corresponding author). ORCID: .
2. Professor, Dept. of Mechanical and Aerospace Engineering, Univ. of Strathclyde, Glasgow G1 1XQ, UK.
3. Professor, Dept. of Mechanical and Aerospace Engineering, Univ. of Strathclyde, Glasgow G1 1XQ, UK. ORCID:
4. Chief Engineer, Weir Minerals Netherlands, Egtenrayseweg 9, Venlo 5928 PH, Netherlands.