Contactless Ultrasonic Wavefield Imaging to Visualize Near-Surface Damage in Concrete Elements
- Authors
- Song, Homin; Popovics, John S.
- Issue Date
- Aug-2019
- Publisher
- MDPI
- Keywords
- air-coupled; concrete; cracking; damage visualization; MEMS ultrasonic microphone array; surface waves; ultrasonic wavefield imaging
- Citation
- APPLIED SCIENCES-BASEL, v.9, no.15
- Journal Title
- APPLIED SCIENCES-BASEL
- Volume
- 9
- Number
- 15
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/85380
- DOI
- 10.3390/app9153005
- ISSN
- 2076-3417
- Abstract
- We present work to detect and visualize near-surface damage in concrete using contactless ultrasonic wavefield imaging technology. A fully contactless ultrasonic scanning system that utilizes a micro-electro-mechanical systems (MEMS) ultrasonic microphone array is used to collect ultrasonic surface wave data from a concrete sample. The obtained wavefield data sets are processed with a frequency-wavenumber (f-k) domain wavefield filtering approach to extract non-propagating oscillatory fields set up by near-surface concrete cracking damage. The experimental results demonstrate that near-surface concrete damage can be detected and visualized using the proposed ultrasonic wavefield imaging approach.
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Collections - 공과대학 > 토목환경공학과 > 1. Journal Articles
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