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All Journal RING Mechanical Engineering LOIS: Jurnal Hukum dan Humaniora
Sis Nanda Kus Andrianto
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Religion Arts Humanities Education Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering

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OPTIMASI PARAMETER DRY MACHINING PADA PROSES PEMBUBUTAN CNC MATERIAL BAKELITE UNTUK MENDUKUNG MANUFAKTUR BERKELANJUTAN MENGGUNAKAN METODE TAGUCHI Riyanto, Obaja Eden Sentosa; Muhammad Ilman Nur Sasongko; Saifuddin Karim; Jibril Maulana; Dewi Izzatus Tsamroh; Sis Nanda Kus Andrianto
RING ME Vol 5 No 1 (2025): RING Mechanical Engineering
Publisher : Universitas Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33474/rme.v5i1.23600

Abstract

Penelitian ini bertujuan untuk mengoptimalkan parameter proses pemesinan kering (dry machining) pada material Bakelite menggunakan metode Taguchi, dengan fokus pada minimisasi kekasaran permukaan (Ra). Tiga parameter utama yang diuji adalah kecepatan spindle (700, 800, 900 rpm), feed rate (0,18; 0,23; 0,28 mm/rev), dan depth of cut (0,3; 0,4; 0,5 mm), yang dikombinasikan dalam desain eksperimen orthogonal array L9 (3³). Pengujian dilakukan pada mesin CNC turning LEADWELL menggunakan pahat karbida tanpa pendingin. Pengukuran nilai kekasaran permukaan dilakukan dengan surface roughness tester Mitutoyo SJ-210, dan hasil dievaluasi menggunakan rasio signal-to-noise (S/N). Hasil menunjukkan bahwa feed rate merupakan faktor paling dominan terhadap kualitas permukaan. Nilai feed rate 0,23 mm/rev menghasilkan kekasaran tertinggi, sementara kombinasi parameter optimal yaitu kecepatan spindle 800 rpm, feed rate 0,18 mm/rev, dan depth of cut 0,3 mm memberikan kekasaran permukaan terendah. Selain itu, ditemukan bahwa peningkatan kecepatan spindle cenderung meningkatkan kekasaran akibat efek termal, sedangkan depth of cut 0,4 mm menghasilkan performa terburuk dibandingkan 0,3 mm dan 0,5 mm. Metode Taguchi terbukti efektif dalam mengidentifikasi parameter optimal dengan efisiensi eksperimen tinggi, mendukung penerapan strategi pemesinan presisi berbasis prinsip manufaktur berkelanjutan tanpa pendingin.
ENHANCING THE SETTLEMENT OF MILD ASSAULT CASES THROUGH PENAL MEDIATION: LAW ENFORCEMENT PRACTICES BY THE WEST LOMBOK RESORT POLICE SIS NANDA KUS ANDRIANTO; NOVITA LISTYANINGRUM; IRPAN SURIADIATA; ABABIL KARHOMA WIJAYA
LOIS: Jurnal Hukum dan Humaniora Vol 1 No 1 (2025)
Publisher : Yayasan Pendidikan Aksara Cendikia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Law enforcement addressing small offenses, particularly minor assaults, is increasingly shifting from traditional judicial systems to restorative justice approaches utilizing prison mediation techniques. This study aims to elucidate the functioning of penal mediation at the West Lombok Resort Police level, the legal frameworks that underpin it, and the challenges encountered throughout its implementation. We employed interviews, field observations, and document analyses to obtain the data. The poll results indicate that criminal mediation relies on the mutual agreement of the victim and the perpetrator, with investigators serving as facilitators and overseers of the procedure. This is supported by the Chief of Police Regulation and the principle that investigators possess the autonomy to make independent decisions, as articulated in the Criminal Procedure Code and the Police Law. Punitive mediation incorporates community members, such as village leaders and Bhabinkamtibmas, to leverage local and societal values in problem resolution.
Co-Authors Ababil Karhoma Wijaya Dewi Izzatus Tsamroh Irpan Suriadiata Jibril Maulana Muhammad Ilman Nur Sasongko Novita Listyaningrum Riyanto, Obaja Eden Sentosa Saifuddin Karim