Analysis on three typical abnormal microstructures of overhead power line suspension clampsWeike Liu, Mengbao Zhou, Jiarui Hu, Songqi Wu, Xianhui Cao, Jie Xiong, Lian Hu, Yi Xie, Chao Feng, Jun Wang and Chun LiuE3S Web Conf., 165 (2020) 06029DOI: https://doi.org/10.1051/e3sconf/202016506029