FraMCoS 10 2019 Bayonne, France

Support vector machine procedure and Gaussian mixture modelling of acoustic emission signals to study crack classification in reinforced concrete structures

Four point bending tests on reinforced concrete (RC) beam specimens were carried out and simultaneously released Acoustic Emissions (AE) were recorded in laboratory. This study reports on the AE characteristics of RC beams under monotonically increased loading. By using load-displacement…

First page of: Support vector machine procedure and Gaussian mixture modelling of acoustic emission signals to study crack classification in reinforced concrete structures
Year 2019
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Abstract

Four point bending tests on reinforced concrete (RC) beam specimens were carried out and simultaneously released Acoustic Emissions (AE) were recorded in laboratory. This study reports on the AE characteristics of RC beams under monotonically increased loading. By using load-displacement curves and the AE signal parameters data, the fracture process of RC beams was studied. As the occurrence of AE events is random, a probabilistic approach named Gaussian Mixture Model (GMM) is implemented for AE data clustering related to tensile cracking and shear cracking considering different AE parameters. A supervised learning model named Support Vector Machine (SVM) procedure has been used to separate the two AE clusters belonging to tensile and shear cracks by constructing hyperplane to overcome the uncertainty. The yielding of testing specimen is compared. Influence of shear reinforcement in RC beam and type of loading was also considered in this study. The yielding of test specimen is compared for different types of loading pattern. The combination of both GMM of AE and SVM procedure to identify the exact place for separation of AE clusters are useful procedures for crack classification in concrete structures.