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All Journal MENDIDIK: Jurnal Kajian Pendidikan dan Pengajaran JURNAL KAJIAN TEKNIK MESIN Motor Bakar : Jurnal Teknik Mesin
Yohanes Oscar Andrian
Unknown Affiliation
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Education Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Transportation Other

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Optimasi Parameter Mesin Laser Tube Cutting Terhadap Keakuratan Dimensi dan Kekasaran Permukaan Pada Square Pipe Mild Steel Menggunakan Metode Taguchi Andrian, Yohanes Oscar; Zad, Muhammad Fairuz; Nugraha, Aditya; Rinanto, Andhy
Motor Bakar : Jurnal Teknik Mesin Vol 8, No 2 (2024): Motor Bakar: Jurnal Teknik Mesin
Publisher : Universitas Muhammadiyah Tangerang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31000/mbjtm.v8i2.10950

Abstract

Laser tube cutting merupakan salah satu proses manufaktur sheet metal, material yang dikerjakan berupa pipa (round, square, rectangle) dan profil beam. Proses laser tube cutting dengan material square pipe mild steel 100x100x6 mm terjadi permasalahan pada hasil permukaan potong yang kasar, dimensi tidak akurat karena tatal atau chip, dan kerugian pada konsumsi daya mesin yang tinggi karena ketidaksesuaian variasi parameter. Parameter yang digunakan dalam penelitian ini yaitu laser power, dengan variasi 2400 watt, 2500 watt, 2600 watt, dan 2700 watt. Parameter gas pressure dengan variasi 0,6 bar, 0,8 bar, 1 bar, dan 1,2 bar. Parameter focus line  yaitu 0,5 mm, 1 mm, 1,5 mm, dan 2 mm. Metode Taguchi digunakan untuk mendapatkan variasi parameter yang optimal untuk mendapatkan nilai keakuratan dimensi dan kekasaran permukaan. Kekasaran permukaan diuji menggunakan surface roughness tester, sedangkan keakuratan dimensi diuji menggunakan dial caliper. Besarnya pengaruh setiap parameter terhadap keakuratan dimensi dan kekasaran di analisis menggunakan metode ANOVA. Hasil penelitian menunjukkan parameter gas pressure memiliki pengaruh terbesar terhadap kekasaran permukaan dengan persentase 53,091% dan keakuratan dimensi dengan persentase 37,338%. Nilai kekasaran minimum dan nilai keakuratan dimensi dapat dicapai dengan parameter laser power 2700 watt, gas pressure 0,6 bar, dan focus line 1 mm
PERANCANGAN DAN ANALISIS DESAIN ROTARY TABLE MESIN PUNCH HOSTI PT. ATMI SOLO DENGAN SISTEM PIRING PEMBAGI Andrian, Yohanes Oscar; Narsetya, Laurensius Abed; Nugraha, Aditya; Nugroho, TH Adi
JURNAL KAJIAN TEKNIK MESIN Vol 8, No 2 (2023): Jurnal Kajian Teknik Mesin
Publisher : Universitas 17 Agustus 1945 Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52447/jktm.v8i2.6777

Abstract

AbstrakMesin adalah salah satu faktor utama penunjang keberhasilan produksi. Mesin punch hosti adalah salah satu dari mesin untuk tujuan khusus yang digunakan untuk memotong lembaran hosti menjadi beberapa ukuran tertentu. Penelitian ini menyampaikan  proses perancangan rotary table mesin punch hosti dengan sistem piring pembagi. Metode penelitian yang digunakan adalah dengan pendekatan studi literatur metode VDI 2222. Rotary table dirancang dengan memperhatikan sistem piring pembagi dan menyesuaikan mesin punch hosti yang telah ada. Kegiatan penelitian melakukan analisis terhadap sistem mekanisme kerja dan konstruksi roda gigi. Sisa limbah hasil pemotongan hosti menggunakan rotary table dengan sistem piring pembagi adalah 41,7% dimana angka presentase tersebut lebih kecil dari 50%. Dengan penambahan alat bantu berupa rotary table dengan sistem piring pembagi dengan biaya tidak lebih dari 30% dari harga mesin punch hosti, mampu memotong hosti secara konsisten.Kata Kunci: Mesin Punch Hosti, Rotary Table, Piring Pembagi, VDI 2222.AbstractThe machine is one of the main factors supporting the success of production. The host punch machine is one of the special purpose machines used to cut the host sheets into certain sizes. This study describes the process of designing a rotary table host punch machine with a dividing plate system. The research method used was a literature study approach using the VDI 2222 method. The rotary table was designed by taking into account the dividing plate system and adjusting existing host punch machines. The research activity carried out an analysis of the working mechanism system and gear construction. The remaining waste from cutting hosts using a rotary table with a dividing plate system is 41.7%, where the percentage is less than 50%. With the addition of tools in the form of a rotary table with a dividing plate system at a cost of not more than 30% of the price of a host punch machine, it is able to cut hosts consistently.Keywords: Host Punch Machine, Rotary Table, Divider Plate, VDI 2222.
Analisis Motivasi dan Persepsi Mahasiswa PPG Calon Guru Melalui Pengembangan Media Ajar Interaktif Wresni, Dhina Shinto; Prihastari, Ema Butsi; Sari, Ayu Istiana; Enggarwati, Ressa; Anggraeni, Novitasari Dyah; Andrian, Yohanes Oscar
MENDIDIK: Jurnal Kajian Pendidikan dan Pengajaran Vol 11 No 1 (2025)
Publisher : Universitas Mathla'ul Anwar Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30653/003.2025111.384

Abstract

This study aims to analyze the motivation and perceptions of pre-service teacher education students in the English Language Education Program at Universitas Slamet Riyadi regarding the implementation of the Leadership Project in the form of developing interactive teaching media for English language learning. The study employed a qualitative descriptive approach with 32 participants from the 2024/2025 academic year. Data were collected through an online questionnaire using Google Forms, consisting of Likert scale items and open-ended questions, as well as weekly student reflections during the implementation at partner schools. The data were analyzed using thematic analysis, which involved data reduction, theme categorization, meaning interpretation, and descriptive narrative presentation. The findings revealed that 80% of respondents had high initial motivation, maintained positive perceptions before and after implementation, and rated the developed media as “useful” or “very useful” for learning. The types of media produced included educational board games, digital quizzes, e-magazines, ReadVenture, and AR Books, all of which effectively enhanced students’ cognitive and psychomotor engagement. The study recommends expanding the research subjects to other study programs, employing experimental designs to measure learning outcomes, and incorporating cost-benefit analysis to ensure the sustainability of interactive teaching media.
Co-Authors Aditya Nugraha Anggraeni, Novitasari Dyah Ayu Istiana Sari Ema Butsi Prihastari Ratna Widyaningrum, Ema Butsi Prihastari Enggarwati, Ressa Narsetya, Laurensius Abed Nugroho, TH Adi Rinanto, Andhy Wresni, Dhina Shinto Zad, Muhammad Fairuz