Cited by 66Structural Health Monitoring TechniquesInfrastructure Maintenance and MonitoringMachine Fault Diagnosis Techniques

Dynamic-based damage identification using neural network ensembles and damage index method

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Dackermann, Ulrike, Li, Jianchun, Samali, Bijan·2010·Advances in Structural Engineering

Abstract

This paper presents a vibration-based damage identification method that utilises a “damage fingerprint” of a structure in combination with Principal Component Analysis (PCA) and neural network techniques to identify defects. The Damage Index (DI) method is used to extract unique damage patterns from a damaged beam structure with the undamaged structure as baseline. PCA is applied to reduce the effect of measurement noise and optimise neural network training. PCA-compressed DI values are, then, used as inputs for a hierarchy of neural network ensembles to estimate locations and severities of various damage cases. The developed method is verified by a laboratory structure and numerical simulations in which measurement noise is taken into account with different levels of white Gaussian noise added. The damage identification results obtained from the neural network ensembles show that the presented method is capable of overcoming problems inherent in the conventional DI method. Issues associated with field testing conditions are successfully dealt with for numerical and the experimental simulations. Moreover, it is shown that the neural network ensemble produces results that are more accurate than any of the outcomes of the individual neural networks.

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Research works printed but not linked: 3

  1. Choi, F. C. (2007). Assessment of the Structural Integrity of Bridges using Dynamic Approaches, PhD Thesis, Faculty of Engineering, University of Technology Sydney, Australia.
  2. Elkordy, M., Chang, K.C. and Lee, G.C. (1992). "Application of neural network classifier in vibrational signature analysis", Proceedings of the 8th Annual Conference of Computation in Civil Engineering, ASCE, pp. 1066-1073.
  3. Stubbs, N., Kim, J.T. and Topole, K. (1992). "An efficient and robust algorithm for damage localization in offshore platforms", Proceedings of the ASCE Tenth Structures Congress, Antonio, Texas, USA, pp 543-546.

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Authors
Dackermann, U., Li, J., & Samali, B.
Affiliations
University of Technology Sydney (AU)
Corresponding author
Dackermann, Ulrike
Venue
Advances in Structural Engineering
Published
2010-12
Volume
13
Issue
6
Pages
1001-1016
ISSN
  • 1369-4332 (ISSN-L)
  • 2048-4011
OpenAlex
W210515905
Cited by
66
References
44
Citations by year
2026: 1 · 2025: 4 · 2024: 5 · 2023: 9 · 2022: 8 · 2021: 9 · 2020: 10 · 2019: 6 · 2018: 1 · 2017: 3 · 2016: 3 · 2015: 2 · 2014: 1 · 2013: 2
FWCI
2.03
Type
journal article
Language
en
Open access
Locations
  • Advances in Structural Engineering (publishedVersion)
  • UTS ePRESS (University of Technology Sydney) (submittedVersion)
Topics
  • Physical Sciences › Engineering › Civil and Structural Engineering › Structural Health Monitoring Techniques
  • Physical Sciences › Engineering › Civil and Structural Engineering › Infrastructure Maintenance and Monitoring
  • Physical Sciences › Engineering › Control and Systems Engineering › Machine Fault Diagnosis Techniques
Keywords
damage detection, vibration-based structural health monitoring, neural network ensembles, principal component analysis, damage localization, damage severity estimation, measurement noise, beams

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