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http://hdl.handle.net/11452/24451
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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