LCF Fracture in Helical Tension Springs of Medium Voltage Switches A. Neidel, E. Cagliyan, T. Gädicke, V. Hartanto, and S. Riesenbeck Practical Metallography 2020 57:11, 809-815 © Carl Hanser Verlag GmbH & Co. KG ISSN 0032-678X
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