Numerical Methods in Civil Engineering

Numerical Methods in Civil Engineering

Automated Detection of Pavement Fatigue Cracks with Deep Learning

Document Type : Research

Authors
1 Department of Civil Engineering, Babol Noshirvani University of Technology, Mazandaran, Iran
2 Faculty of Civil Engineering at K. N. Toosi University of Technology, Tehran, Iran
3 Department of Civil and Environmental Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
Abstract
This study uses advanced imaging techniques and deep learning algorithms to assess fatigue cracks through cyclic loading on asphalt specimens. Faster Region-Based Convolutional Neural Network (Faster R-CNN) and the You Only Look Once (YOLO) models were compared to detect fatigue cracks in Ground-Penetrating Radar (GPR) and Computed Tomography (CT) scan images and to detect concealed cracks in GPR field data. Crack detection was improved using transfer learning with pre-trained weights from the COCO dataset. Using the piecewise function model, the accumulative horizontal strain was accurately estimated. Based on the statistical analysis, the model's accuracy was verified, with no significant differences between experimental and predicted results. Moreover, a piecewise function applied to CT scan data resulted in a better understanding of fatigue behavior. The crack classification was improved after retraining pre-trained deep convolutional neural networks (PDCNNs). The YOLO models outperformed Faster-RCNN in terms of average precision. Models YOLOv7, YOLOv5s, and YOLOv8 performed well on the GPR dataset, while YOLOv5s, YOLOv5m, and YOLOv8 were the most effective models on the CT dataset.
Keywords
Subjects

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Volume 10, Issue 3
Winter 2026
Pages 92-108

  • Receive Date 30 November 2025
  • Revise Date 27 February 2026
  • Accept Date 30 May 2026