Detection of Crimping Defects in X-DR Images of Strain Clamps Based on Multi Attention Mechanism Fusion Network

As an important component of transmission lines, the crimping performance of strain clamps directly affects the stable operation of power systems. In order to quickly and accurately detect crimping defects in strain clamps according to their X-ray digital radiography (X-DR) images, a defect detection method is presented in this article based on multi-attention mechanism fusion network (MAMFNet). Firstly, a strain clamp X-DR image dataset containing six categories of crimping defects is constructed according to relevant defect assessment criteria, and data augmentation and image enhancement are performed. Secondly, the MAMFNet model is built using ShuffleNetV2 and DSC-PANet, incorporating an attention mechanism module to enhance the model's focus on target defects, and utilizing dual non-maximum suppression (Dual NMS) to fuse detection results from different attention mechanisms. Finally, the proposed method is tested using strain clamp X-DR images collected from transmission line inspection. The results show that MAMFNet achieves a mAP of 94.83% and a detection speed of 20 frames per second (FPS), demonstrating superior overall performance compared to other object detection models. This method realizes accurate detection of crimping defects in strain clamps, providing assistance for quality control before commissioning of transmission lines and maintenance during operation.