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Monitoring Crack Propagation in Reinforced Concrete Shear Walls by ... |
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by Alireza Farhidzadeh , Ehsan Dehghan-Niri , Salvatore Salamone. Bism... |
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This paper is a copy of ahead of print. The final and |
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original copy is available at: |
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http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943- |
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541X.0000781 |
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In the last two decades, several efforts have been made |
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to monitor the cracking behavior in reinforced concrete |
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(RC) structures. A technique that shows promise is |
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Acoustic Emission (AE). This paper presents the results |
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of an experimental study aimed at monitoring fracture |
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processes in a large-scale RC shear wall using one of the |
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most important AE parameters; that is, the b-value. The |
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specimen was subjected to a displacement controlled |
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reversed cyclic loading. A Gaussian filter is proposed to |
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improve the interpretation of the b-value data obtained |
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during the test. In addition, a cluster analysis based on |
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the k-means is presented to automatically classify the |
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signal into tensile and shear cluster. Finally, a new |
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algorithm called Sifted b-value (Sb) analysis is |
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introduced to monitor the evolution of each crack mode. |
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The analysis methodology could successfully provide early |
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warning for yielding, detect the moment of yielding, and |
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estimate the instance of ultimate strength by AE data. |
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Date Published: 2012-12-08 17:07:53 |
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Identifier: MonitoringCrackPropagationInReinforcedConcreteShearWallsBy… |
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Item Size: 51397753 |
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Language: English |
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Media Type: texts |
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# Topics |
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Acoustic Emission; Sifted b-value ana... |
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@a_farhid |
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