Wire Break Detection in Bridge Tendons Using Low-Frequency Acoustic Emissions
Research output: Contribution to book/Conference proceedings/Anthology/Report › Conference contribution › Contributed › peer-review
Contributors
Abstract
Aging infrastructure is increasingly becoming a problem in industrialized countries. As a matter of fact, many existing bridges were already built in the mid-to-late twentieth century and hence are not in a good condition. A majority of these bridges were built from prestressed concrete and therefore may suffer from stress corrosion cracking of steel tendons. Due to their importance for structural integrity and hence structural safety, a reliable monitoring method of bridge tendons is of major interest. Recent research suggests the use of acoustic emissions (AE) using ultrasonic sensors to detect wire break events in civil engineering structures. In this work, accelerometers operating in the audible frequency range (<17 kHz) are used to record more than hundred wire breaks manually conducted at two old girders taken from a demolished bridge in Roding, Germany. Based on these experiments, approximately twelve days of continuous operational recordings conducted at a similar bridge construction in Hagen, Germany and additional wire breaks recorded at the bridge structure in Roding before demolition, we train and evaluate a support vector machine to detect wire break events in bridge tendons using low-level frequency domain features such as the spectral bandwidth. On the evaluation dataset, we achieve a recall score of more than 90% while having a FP-rate of approximately ten events per day. It should be noted that using low-frequency acoustic emissions we are able to detect wire break events in distances up to more than 20 m.
Details
Original language | English |
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Title of host publication | European Workshop on Structural Health Monitoring, EWSHM 2022, Volume 3 |
Editors | Piervincenzo Rizzo, Alberto Milazzo |
Publisher | Springer Science and Business Media B.V. |
Pages | 1024-1033 |
Number of pages | 10 |
ISBN (electronic) | 978-3-031-07322-9 |
ISBN (print) | 9783031073212 |
Publication status | Published - 2023 |
Peer-reviewed | Yes |
Publication series
Series | Lecture notes in civil engineering |
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Volume | 270 LNCE |
ISSN | 2366-2557 |
Conference
Title | 10th European Workshop on Structural Health Monitoring |
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Abbreviated title | EWSHM 2022 |
Conference number | 10 |
Duration | 4 - 7 July 2022 |
City | Palermo |
Country | Italy |
External IDs
ORCID | /0000-0001-8735-1345/work/142244671 |
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WOS | 000871871300104 |
Keywords
ASJC Scopus subject areas
Keywords
- Acoustic emission, Bridge monitoring, Damage detection, Support vector machines