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RSS FeedsSensors, Vol. 18, Pages 833: Computerized Hammer Sounding Interpretation for Concrete Assessment with Online Machine Learning (Sensors)

 
 

10 march 2018 00:30:34

 
Sensors, Vol. 18, Pages 833: Computerized Hammer Sounding Interpretation for Concrete Assessment with Online Machine Learning (Sensors)
 




Developing efficient Artificial Intelligence (AI)-enabled systems to substitute the human role in non-destructive testing is an emerging topic of considerable interest. In this study, we propose a novel hammering response analysis system using online machine learning, which aims at achieving near-human performance in assessment of concrete structures. Current computerized hammer sounding systems commonly employ lab-scale data to validate the models. In practice, however, the response signal patterns can be far more complicated due to varying geometric shapes and materials of structures. To deal with a large variety of unseen data, we propose a sequential treatment for response characterization. More specifically, the proposed system can adaptively update itself to approach human performance in hammering sounding data interpretation. To this end, a two-stage framework has been introduced, including feature extraction and the model updating scheme. Various state-of-the-art online learning algorithms have been reviewed and evaluated for the task. To conduct experimental validation, we collected 10,940 response instances from multiple inspection sites; each sample was annotated by human experts with healthy/defective condition labels. The results demonstrated that the proposed scheme achieved favorable assessment accuracy with high efficiency and low computation load.


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154 viewsCategory: Chemistry, Physics
 
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