1. Distinguished Professor of Civil Engineering and Research Director, Centre for Geomechanics and Railway Engineering and Australian Research Council Training Centre for Advanced Technologies in Rail Track Infrastructure (Industrial Transformation Training Centres-Rail), Univ. of Wollongong, Wollongong, NSW 2522, Australia (corresponding author).
2. Research Fellow, Centre for Geomechanics and Railway Engineering and Australian Research Council Training Centre for Advanced Technologies in Rail Track Infrastructure (Industrial Transformation Training Centres-Rail), Univ. of Wollongong, Wollongong, NSW 2522, Australia. ORCID: .
3. Associate Professor, Centre for Geomechanics and Railway Engineering and Australian Research Council Training Centre for Advanced Technologies in Rail Track Infrastructure (Industrial Transformation Training Centres-Rail), Univ. of Wollongong, Wollongong, NSW 2522, Australia.