Hurst exponent footprints from activities on a large structural system

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Title: Hurst exponent footprints from activities on a large structural system
Authors: Pakrashi, Vikram
Kelly, Joe
Harkin, Julie
Farrell, Aidan
Permanent link: http://hdl.handle.net/10197/10429
Date: 15-Apr-2013
Online since: 2019-05-14T08:21:10Z
Abstract: This paper presents Hurst exponent footprints from pseudo-dynamic measurements of significantly varied activities on a damaged bridge structure during rehabilitation through continuous monitoring. The system is interesting due to associated uncertainty in large-scale structures and significant presence of human intervention arising from fundamentally different processes. Investigations into the variation of computed Hurst exponents on time series of limited lengths are carried out in this regard. The Hurst exponents are compared with respect to specific events during the rehabilitation, as well as with the data collection locations. The variations of local Hurst exponents about the values computed for each activity are presented. The scaling of Hurst exponents for different activities is also investigated; these are representative of the extent of multifractality for each event. The extent of multifractality is assessed along with its source and time dependency.
Type of material: Journal Article
Publisher: Elsevier
Journal: Physica A: Statistical Mechanics and its Applications
Volume: 392
Issue: 8
Start page: 1803
End page: 1817
Copyright (published version): 2013 Elsevier
Keywords: Hurst exponentMultifractalHuman activityStructural systemsUncertaintyBridges
DOI: 10.1016/j.physa.2012.11.004
Language: en
Status of Item: Peer reviewed
Appears in Collections:Mechanical & Materials Engineering Research Collection

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