1. Ph.D. Student, Vibration Engineering Section, College of Engineering, Mathematics and Physical Sciences, Univ. of Exeter, Exeter EX4 4QF, UK (corresponding author). ORCID: .
2. Professor, Vibration Engineering Section, College of Engineering, Mathematics and Physical Sciences, Univ. of Exeter, Exeter EX4 4QF, UK.
3. Engineer, North Park Road, Full Scale Dynamics Ltd., Exeter EX4 4QF, UK; Ph.D. Student, Richview Newstead Block B, School of Civil Engineering, Univ. College Dublin, Belfield, Dublin D04 V1W8, Ireland.