Structural Damage Identification Using Ensemble Deep Convolutional Neural Network Models

• Published in: Computer modeling in engineering & sciences Vol. 134; no. 2; pp. 835 - 855
• Main Authors: Sadegh Barkhordari, Mohammad, Jahed Armaghani, Danial, G. Asteris, Panagiotis
• Format: Journal Article
• Language: English
• Published: Henderson Tech Science Press 2023
• Subjects: Algorithms; Artificial neural networks; Damage assessment; Damage detection; Ensemble learning; Evolutionary computation; Machine learning; Neural networks
• DOI: 10.32604/cmes.2022.020840
• ISSN: 1526-1506; 1526-1492

The existing strategy for evaluating the damage condition of structures mostly focuses on feedback supplied by traditional visual methods, which may result in an unreliable damage characterization due to inspector subjectivity or insufficient level of expertise. As a result, a robust, reliable, and repeatable method of damage identification is required. Ensemble learning algorithms for identifying structural damage are evaluated in this article, which use deep convolutional neural networks, including simple averaging, integrated stacking, separate stacking, and hybrid weighted averaging ensemble and differential evolution (WAE-DE) ensemble models. Damage identification is carried out on three types of damage. The proposed algorithms are used to analyze the damage of 4585 structural images. The effectiveness of the ensemble learning techniques is evaluated using the confusion matrix. For the testing dataset, the confusion matrix achieved an accuracy of 94 percent and a minimum recall of 92 percent for the best model (WAE-DE) in distinguishing damage types as flexural, shear, combined, or undamaged.