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Prayoga, Setyaji Damar (2023) Analisis Pengaruh Variasi RPM dan Media Pendingin pada Pengelasan Gesek Baja Karbon ST 42 Terhadap Kekuatan Tarik dan Struktur Mikro. (Analysis Of The Influence Of RPM Variation and Cooling Media on ST 42 Carbon Steel Flicing Welding on Tensile Strength and Micro Structure). Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.