1. Center for NDT and Department of Construction Engineering, Chaoyang University of Technology, 168 Gifong E. Rd., Wufong, Taichung 41349, Taiwan (Corresponding author), e-mail: chiangc@cyut.edu.tw, https://orcid.org/0000-0001-7656-1945
2. Center for NDT and Dept Construction Engineering, Chaoyang University of Technology, 168 Gifong E. Rd., Wufong, Taichung 41349, Taiwan, https://orcid.org/0000-0002-4166-2436 (K.-T.H)
3. Department of Civil Engineering, National Chung Hsin University, 145 Xingda Rd., Taichung 40227, Taiwan