Fracture failure analysis of tram pantograph spring
Liu Yong, Wang Hui, Zhang Ting, Liu Haibo, Gong Hou, Xuan Yixun, Cui Zhemin
Heat Treatment of Metals . 2020, (5): 253 -256 .  DOI: 10.13251/j.issn.0254-6051.2020.05.048