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faisal, muhammad, and Asrul Asrul. “Analisa Analisa Kelelahan Dan Kekerasan Pada Logam Axle Shaft Dengan Pengelasan Gesek”. Jurnal Teknik Mesin 15, no. 2 (December 30, 2022): 159 - 165. Accessed December 16, 2025. http://ejournal2.pnp.ac.id/index.php/jtm/article/view/964.