Localization of a delamination and estimation of its length in a composite laminate beam by the VSHM and pattern recognition methods

Minak, Giangiacomo and Palazzetti, Roberto and Trendafilova, Irina and Zucchelli, Andrea (2010) Localization of a delamination and estimation of its length in a composite laminate beam by the VSHM and pattern recognition methods. Mechanics of Composite Materials, 46 (4). pp. 387-394. ISSN 0191-5665

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Abstract

The focus of this work is to investigate the delamination damage in laminate composite beams, to fix a Vibration-based Structural Health Monitoring (VSHM) method for the laminate structures. The analysis is concentrated on the vibration characteristics of the samples and, in particular, the attention is addressed on the first several natural frequencies of a composite laminate beam with a delamination damage. The core of this work is an experimental investigation on the vibration response of a composite laminate beam and its changes caused by delaminations with different sizes and in different locations of the beam. The study is divided in 3 sections: delamination detection, delamination localization, and delamination estimate. The aim is to determine how the first six harmonics frequencies change due to the delamination, and the results show that they can be successfully used to investigate the presence, the location and the dimensions of the delamination in a composite beam. A Pattern Recognition analysis is used to locate the damage, while the detection and the evaluation are done using the changes in the harmonic frequencies. A finite element analysis is performed, and the variations of the natural frequencies due to delamination are in good agreement with the experimental results.

ORCID iDs

Palazzetti, Roberto ORCID: https://orcid.org/0000-0003-3813-4090

Trendafilova, Irina ORCID: https://orcid.org/0000-0003-1121-7718

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  Item type:	Article
  ID code:	48724
  Dates:	Date Event November 2010 Published
  Notes:	Russian Translation published in Mekhanika Kompozitnykh Materialov, Vol 46, No 4, pp 567-578, July 2009.
  Keywords:	vibration-based damage detection, composite beam, delamination detection, numerical analysis, localization, delamination, estimation, length, composite laminate beam , VSHM , pattern recognition methods, Mechanical engineering and machinery, Mechanical Engineering, Mechanics of Materials, Computational Mechanics, Ceramics and Composites, Computer Vision and Pattern Recognition, Numerical Analysis
  Subjects:	Technology > Mechanical engineering and machinery
  Department:	Faculty of Engineering > Design, Manufacture and Engineering Management Faculty of Engineering > Mechanical and Aerospace Engineering
  Depositing user:	Pure Administrator
  Date deposited:	23 Jun 2014 13:42
  Last modified:	01 Jul 2021 01:04
  Related URLs:	Scopus publication
  URI:	https://strathprints.strath.ac.uk/id/eprint/48724