Modal analysis of a bridge using short-duration accelerations

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Title: Modal analysis of a bridge using short-duration accelerations
Authors: Casero, MiguelFeng, KunGonzález, Arturo
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Date: 7-Aug-2019
Online since: 2019-08-06T08:48:59Z
Abstract: The application of unmanned aerial vehicle technology to bridge structural health monitoring has become a hot research topic due to its low cost, safety and high energy efficiency. However, flight duration and battery life are substantial technical limitations. Is a short data burst sufficient for damage detection? This paper intends to answer this question by developing a novel approach based on frequency domain decomposition to obtain the mode shapes from a short data burst. Then, the modal assurance criterion is used as an indicator of the differences between the estimated mode shapes from the short data burst and the exact eigenvectors from finite element analysis. Here, the short data burst is obtained from the simulated acceleration response of a bridge beam model due to the crossing of two quarter-cars. A new damage indicator based on the modal assurance criterion profile along the beam is proposed to locate and quantify damage.
Funding Details: Science Foundation Ireland
Type of material: Conference Publication
Volume: Paper 78
Keywords: Modal analysisBridge dynamicsTraffic loadingDamage detectionStructural dynamicsFrequency analysisBridge accelerationMARS-Fly
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Language: en
Status of Item: Peer reviewed
Is part of: Proceedings of the 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure (SHMII-9)
Conference Details: SHMII-9: 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure, St. Louis, Missouri USA, August 4-7 2019
Appears in Collections:Critical Infrastructure Group Research Collection
Earth Institute Research Collection
Civil Engineering Research Collection

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