학술논문
Classification of cracking sources of different engineering media via machine learning.
Document Type
Article
Author
Source
Subject
*MACHINE learning
*CONVOLUTIONAL neural networks
*ACOUSTIC emission
*STRUCTURAL health monitoring
*COMPOSITE structures
*CONSTRUCTION materials
*SIGNAL convolution
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Language
ISSN
8756-758X
Abstract
Complex civil structures require the cooperation of many building materials. However, it is difficult to accurately monitor and evaluate the inner damage states of various material systems. Based on a convolutional neural network (CNN) and the acoustic emission (AE) time‐frequency diagram, we used the transfer learning method for classifying the AE signals of different materials under external loads. The results show the CNN model can accurately classify cracks that come from different materials based on AE signals. The recognition accuracy can reach 90% just by retraining the full connection layer of the pretrained model, and its accuracy can reach 97% after retraining the top 2 convolutional layers of this model. A realization of cracking source identification mainly depends on the differences in mineral particles in materials. This work highlights the great potential for real‐time and quantitative monitoring of the health status of composite civil structures. [ABSTRACT FROM AUTHOR]