Quantitative Analysis of Bolt Loosening Angle Based on Deep Learning. - Qian, Yi; Huang, Chuyue; Han, Beilin; Cheng, Fan; Qiu, Shengqiang; Deng, Hongyang; Duan, Xiang; Zheng, Hengbin; Liu, Zhiwei; Wu, Jie (Buildings (2075-5309), 2024)