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Bridge Monitoring with Harmonic Excitation and Principal Component Analysis

Auteur(s):


Médium: article de revue
Langue(s): en 
Publié dans: The Baltic Journal of Road and Bridge Engineering, , n. 4, v. 13
Page(s): 374-384
DOI: 10.7250/bjrbe.2018-13.423
Abstrait:

Principal Component Analysis is used for damage detection in structures excited by harmonic forces. Time responses are directly analysed by Singular Value Decomposition to deduct two dominant Proper Orthogonal Values corresponding to two Proper Orthogonal Modes. Damage index is defined by the concept of subspace angle that a subspace is built from the two Proper Orthogonal Modes. A subspace angle reflects the coherence between two different structural health states. An example is given through the application on a part of a real prestressed concrete bridge in Luxembourg where different damage states were created by cutting a number of prestressed tendons in four scenarios with increasing levels. Results are better by using excitation frequency close to an eigenfrequency of the structure. The technique is convenient for practical application in operational bridge structures.

Copyright: © 2018 Viet Ha Nguyen, Jean-Claude Golinval, Stefan Maas
License:

Cette oeuvre a été publiée sous la license Creative Commons Attribution 4.0 (CC-BY 4.0). Il est autorisé de partager et adapter l'oeuvre tant que l'auteur est crédité et la license est indiquée (avec le lien ci-dessus). Vous devez aussi indiquer si des changements on été fait vis-à-vis de l'original.

  • Informations
    sur cette fiche
  • Reference-ID
    10256331
  • Publié(e) le:
    21.12.2018
  • Modifié(e) le:
    02.06.2021