Damage localization in truss girders by an application of the discrete wavelet transform

The paper demonstrates the potential of wavelet transform in a discrete form for structural damage localization. The efficiency of the method is tested through a series of numerical examples, where the real flat truss girder is simulated by a parameterized finite element model. The welded joints are...

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Main Authors: Anna Knitter-Piątkowska, Olga Kawa, Michał Jan Guminiak
Format: Article
Language:English
Published: Polish Academy of Sciences 2023-02-01
Series:Bulletin of the Polish Academy of Sciences: Technical Sciences
Subjects:
Online Access:https://journals.pan.pl/Content/126205/PDF/BPASTS_2023_71_1_3156.pdf
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author Anna Knitter-Piątkowska
Olga Kawa
Michał Jan Guminiak
author_facet Anna Knitter-Piątkowska
Olga Kawa
Michał Jan Guminiak
author_sort Anna Knitter-Piątkowska
collection DOAJ
description The paper demonstrates the potential of wavelet transform in a discrete form for structural damage localization. The efficiency of the method is tested through a series of numerical examples, where the real flat truss girder is simulated by a parameterized finite element model. The welded joints are introduced into the girder and classic code loads are applied. The static vertical deflections and rotation angles of steel truss structure are taken into consideration, structural response signals are computed at discrete points uniformly distributed along the upper or lower chord. Signal decomposition is performed according to the Mallat pyramid algorithm. The performed analyses proved that the application of DWT to decompose structural response signals is very effective in determining the location of the defect. Evident disturbances of the transformed signals, including high peaks, are expected as an indicator of the defect existence in the structure. The authors succeeded for the first time in the detection of breaking the weld in the truss node as well as proved that the defect can be located in the diagonals.
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spelling doaj.art-75a7a0386ba84beb98c2317dce6c14a92023-03-22T17:47:55ZengPolish Academy of SciencesBulletin of the Polish Academy of Sciences: Technical Sciences2300-19172023-02-01711https://doi.org/10.24425/bpasts.2023.144581Damage localization in truss girders by an application of the discrete wavelet transformAnna Knitter-Piątkowska0https://orcid.org/0000-0002-8082-6966Olga Kawa1Michał Jan Guminiak2Poznan University of Technology, Institute of Structural Analysis, PolandPoznan University of Technology, Institute of Structural Analysis, PolandPoznan University of Technology, Institute of Structural Analysis, PolandThe paper demonstrates the potential of wavelet transform in a discrete form for structural damage localization. The efficiency of the method is tested through a series of numerical examples, where the real flat truss girder is simulated by a parameterized finite element model. The welded joints are introduced into the girder and classic code loads are applied. The static vertical deflections and rotation angles of steel truss structure are taken into consideration, structural response signals are computed at discrete points uniformly distributed along the upper or lower chord. Signal decomposition is performed according to the Mallat pyramid algorithm. The performed analyses proved that the application of DWT to decompose structural response signals is very effective in determining the location of the defect. Evident disturbances of the transformed signals, including high peaks, are expected as an indicator of the defect existence in the structure. The authors succeeded for the first time in the detection of breaking the weld in the truss node as well as proved that the defect can be located in the diagonals.https://journals.pan.pl/Content/126205/PDF/BPASTS_2023_71_1_3156.pdftruss structuresdamage localizationfinite element methoddiscrete wavelet transform
spellingShingle Anna Knitter-Piątkowska
Olga Kawa
Michał Jan Guminiak
Damage localization in truss girders by an application of the discrete wavelet transform
Bulletin of the Polish Academy of Sciences: Technical Sciences
truss structures
damage localization
finite element method
discrete wavelet transform
title Damage localization in truss girders by an application of the discrete wavelet transform
title_full Damage localization in truss girders by an application of the discrete wavelet transform
title_fullStr Damage localization in truss girders by an application of the discrete wavelet transform
title_full_unstemmed Damage localization in truss girders by an application of the discrete wavelet transform
title_short Damage localization in truss girders by an application of the discrete wavelet transform
title_sort damage localization in truss girders by an application of the discrete wavelet transform
topic truss structures
damage localization
finite element method
discrete wavelet transform
url https://journals.pan.pl/Content/126205/PDF/BPASTS_2023_71_1_3156.pdf
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AT olgakawa damagelocalizationintrussgirdersbyanapplicationofthediscretewavelettransform
AT michałjanguminiak damagelocalizationintrussgirdersbyanapplicationofthediscretewavelettransform