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Başlık: A new structural damage detection index based on analyzing vibration modes by the wavelet transform
Yazarlar: Uludağ Üniversitesi/Mühendislik Fakültesi/Makine Mühendisliği Bölümü.
0000-0003-3070-6365
Gökdağ, Hakan
Kopmaz, Osman
F-3233-2016
23012197200
6603311475
Anahtar kelimeler: Beams
Engineering
Damage detection
Interpolation
Structural analysis
Wavelet transforms
Cubic spline
MATLAB environment
Section size
Simply supported
Structural damage detection
Vibration modes
Vibration analysis
Yayın Tarihi: 30-May-2010
Yayıncı: Techno-Press
Atıf: Gökdağ, H. ve Kopmaz, O. (2010). "A new structural damage detection index based on analyzing vibration modes by the wavelet transform". Structural Engineering and Mechanics, 35(2), 257-260.
Özet: A study was conducted to demonstrate a new new structural damage detection index based on analyzing vibration modes by the wavelet transform (WT). The performance of the method is demonstrated by the first three vibration modes of a simply supported (SS) beam. The damaged vibration mode (DM) was assumed to be composed of undamaged mode (UM) and other components, such as damage-induced variations and noise. The DM is extended by its asymmetry to reduce border distortion. This was achieved by 'wextend' command in MATLAB environment and the extended signal was upsampled to the nearest power of 2 by cubic spline the DWT was interpolation, as the defined for a sequence with length of some power of 2. The method was applied to the first three vibration modes of a beam with length L = 1 m and section sizes 40(width) × 30(height)mm2.
URI: https://doi.org/10.12989/sem.2010.35.2.257
http://koreascience.or.kr/article/JAKO201035356350417.page
http://hdl.handle.net/11452/24451
ISSN: 1225-4568
Koleksiyonlarda Görünür:Scopus
Web of Science

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