Static-based early-damage detection using symbolic data analysis and unsupervised learning methods

A large amount of researches and studies have been recently performed by applying statistical and machine learning techniques for vibration-based damage detection. However, the global character inherent to the limited number of modal properties issued from operational modal analysis may be not appropriate for early-damage, which has generally a local character. The present paper aims at detecting this type of damage by using static SHM data and by assuming that early-damage produces dead load redistribution. To achieve this objective a data driven strategy is proposed, consisting of the combination of advanced statistical and machine learning methods such as principal component analysis, symbolic data analysis and cluster analysis. From this analysis it was observed that, under the noise levels measured on site, the proposed strategy is able to automatically detect stiffness reduction in stay cables reaching at least 1%.

  • Authors:
    • SANTOS, João Pedro
    • CREMONA, Christian
    • ORCESI, André
    • SILVEIRA, Paulo
    • CALADO, Luís
  • Publication Date: 2015

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01629370
  • Record Type: Publication
  • Source Agency: Institut Francais des Sciences et Technologies des Transports, de l'Amenagement et des Reseaux (IFSTTAR)
  • Contract Numbers: RPR1S12005, Maîtrise du cycle de vie des ouvrages
  • Files: ITRD
  • Created Date: Mar 17 2017 10:37AM