caa a22 4500 606172858 CHVBK 20210128100730.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s10921-015-0300-1 doi (NATIONALLICENCE)springer-10.1007/s10921-015-0300-1 Implementation of Coda Wave Interferometry Using Taylor Series Expansion [Elektronische Daten] [Shukui Liu, Jinying Zhu, Ziyan Wu] Coda waves are sensitive to small changes in scattering media, in which multiple scattering and repeatedly sampling occur due to the changes. Coda wave interferometry (CWI) is a technique to monitor the changes in media by comparing the coda waves before and after perturbation. Doublet technique and stretching technique are two commonly used approaches based on cross correlation when CWI analysis is performed. However these two methods are time-consuming due to the involvement of cross correlation calculation. This paper presents a new CWI calculation approach using Taylor series expansion. The computation time is significantly reduced compared to the cross correlation based methods. This method is demonstrated on a numerical example as well as an experimental example. Comparison of the results between the stretch technique and the method proposed is presented, and the influences of different factors on the CWI analysis are discussed. Springer Science+Business Media New York, 2015 Coda wave interferometry nationallicence Taylor series expansion nationallicence Stretch technique nationallicence Cross correlation nationallicence Liu Shukui School of Mechanics and Civil Engineering, China University of Mining and Technology, 221008, Xuzhou, People's Repubic of China aut Zhu Jinying Department of Civil Engineering, The University of Nebraska at Lincoln, 68182, Omaha, NE, USA aut Wu Ziyan School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, 710072, Xi'an, People's Repubic of China aut Journal of Nondestructive Evaluation Springer US; http://www.springer-ny.com 34/3(2015-09-01), 1-6 0195-9298 34:3<1 2015 34 10921 https://doi.org/10.1007/s10921-015-0300-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 brief-communication jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10921-015-0300-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Shukui School of Mechanics and Civil Engineering, China University of Mining and Technology, 221008, Xuzhou, People's Repubic of China aut NATIONALLICENCE 700 1- Zhu Jinying Department of Civil Engineering, The University of Nebraska at Lincoln, 68182, Omaha, NE, USA aut NATIONALLICENCE 700 1- Wu Ziyan School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, 710072, Xi'an, People's Repubic of China aut NATIONALLICENCE 773 0- Journal of Nondestructive Evaluation Springer US; http://www.springer-ny.com 34/3(2015-09-01), 1-6 0195-9298 34:3<1 2015 34 10921