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Wavelet-Based Time-Domain Damage Localization in RC Beams

Year: 1400
COI: ICCACS04_0313
Language: EnglishView: 43
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Seyede Banafsheh Mirkazemi - M.Sc. Student, Department of Civil Engineering, Ferdows Branch, Islamic Azad University,Ferdows, Iran,
Hashem Jahangir - Assistant Professor, Department of Civil Engineering, University of Birjand, Birjand, Iran,
Ali Zahmatkesh - Department of Civil Engineering, Ferdows Branch, Islamic Azad University, Ferdows, Iran,


Identifying and evaluating damages on the structures during their useful lifetime is essential and has always been studied. This paper, focusing on the time series and thehistory of the vibration responses obtained from the modal test, damages have been investigated with different geometrical shapes and in various locations of reinforcedconcrete (RC) beams. For this purpose, after the development of ABAQUS software in modelling a laboratory sample of RC beams evaluated in previous research, two newdamage index was proposed to identify the damages. Single artificial damages are implemented in the left, middle and right of numerical models of RC beams. All thesedamage indices' input was the acceleration of the degrees of freedom of RC beams samples in two damaged and undamaged states. The proposed damage indices in thisstudy were calculated based on the area below the acceleration history diagrams and the maximum wavelet coefficient vector. In these indices, db۱۰ from Daubechies wavelet family was selected and utilized. Results showed that using the damage index obtained from the area below the acceleration is not suitable. On the other hand, the damage indices from the maximum wavelet coefficient vector values could precisely identify damages.


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Mirkazemi, Seyede Banafsheh and Jahangir, Hashem and Zahmatkesh, Ali,1400,Wavelet-Based Time-Domain Damage Localization in RC Beams,Fourth International Conference and Fifth National Conference on Civil Engineering, Architecture, Art and Urban Design,Tabriz,

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Type of center: Azad University
Paper count: 633
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