TY - GEN
T1 - Automated Acoustic Scanning of Concrete Bridge Decks and Delamination Identification
AU - Sun, Hongbin
AU - Zhu, Jinying
N1 - Publisher Copyright:
© 2019, Springer International Publishing AG, part of Springer Nature.
PY - 2019
Y1 - 2019
N2 - Chain drag testing is a common practice for bridge deck evaluation owing to its low cost and ease of use. Delaminations in bridge decks are identified by hollow sounds when steel chain is dragged on deck surface. However, this method is subjective, and result interpretation depends on the experience of the operators. Traffic noise also affects the test speed and accuracy of results. This paper presents an automated acoustic scanning system to detect delaminations in concrete structures, including bridge decks. The system consists of an array of ball-chain impactors, a noncontact MEMS microphone sensor array, multi-channel data acquisition device, RTK GPS positioning system, and signal processing schemes. A delamination identification algorithm was then developed to identify the positions and dimensions of delaminations. The acoustic scanning system and the delamination identification algorithm were validated in field tests of concrete bridge decks. The system can scan a concrete bridge deck at walking speed with half- or full-lane width coverage. Compared to the conventional manual chain drag test, the automated system provides improved efficiency, accuracy, repeatability, and practicality.
AB - Chain drag testing is a common practice for bridge deck evaluation owing to its low cost and ease of use. Delaminations in bridge decks are identified by hollow sounds when steel chain is dragged on deck surface. However, this method is subjective, and result interpretation depends on the experience of the operators. Traffic noise also affects the test speed and accuracy of results. This paper presents an automated acoustic scanning system to detect delaminations in concrete structures, including bridge decks. The system consists of an array of ball-chain impactors, a noncontact MEMS microphone sensor array, multi-channel data acquisition device, RTK GPS positioning system, and signal processing schemes. A delamination identification algorithm was then developed to identify the positions and dimensions of delaminations. The acoustic scanning system and the delamination identification algorithm were validated in field tests of concrete bridge decks. The system can scan a concrete bridge deck at walking speed with half- or full-lane width coverage. Compared to the conventional manual chain drag test, the automated system provides improved efficiency, accuracy, repeatability, and practicality.
KW - Acoustic Scanning
KW - Bridge Deck
KW - Concrete Bridge Decks
KW - Delamination Identification
KW - Drag Chain
UR - http://www.scopus.com/inward/record.url?scp=85087529293&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-96241-2_13
DO - 10.1007/978-3-319-96241-2_13
M3 - Conference contribution
AN - SCOPUS:85087529293
SN - 9783319962405
T3 - Sustainable Civil Infrastructures
SP - 150
EP - 160
BT - Advancements on Sustainable Civil Infrastructures - Proceedings of the 5th GeoChina International Conference 2018 – Civil Infrastructures Confronting Severe Weathers and Climate Changes
A2 - Chen, Don
A2 - Kim, Sonny
A2 - Tapase, Anand
PB - Springer Science and Business Media B.V.
T2 - 5th GeoChina International Conference on Civil Infrastructures Confronting Severe Weathers and Climate Changes: From Failure to Sustainability, 2018
Y2 - 23 July 2018 through 25 July 2018
ER -
