Research on Vibro-Acoustic Detection Method of Porcelain Pillar Insulators Lei Gao, Chunlv Meng, Chun Chen, Jingpu Feng, Xunzhou Ji, Yuan Sun, Chiliang Lin, Wenqing Chen, Shengyu Lin and Zhongmou Gao E3S Web Conf., 438 (2023) 01013 Published online: 26 October 2023 DOI: 10.1051/e3sconf/202343801013