Saputra E. Front Matter Jurnal Rekayasa Mesin Vol. 14 No. 2 Agustus 2019. j.rekayasa.mesin. [Internet]. 2019 Oct. 9 [cited 2025 May 24];14(2):i-v. Available from: https://jurnal.polines.ac.id/index.php/rekayasa/article/view/1616