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All Journal Tekinfo | Scientific Journal of Industrial and Information Engineering JURNAL CRANKSHAFT Jurnal Aplikasi Ilmu Teknik Industri (JAPTI) Journal Of Business, Finance, and Economics (JBFE) Journal of Applied Mechanical Engineering and Renewable Energy (JAMERE) Literasi: Jurnal Pengabdian Masyarakat dan Inovasi INJECTION: Indonesian Journal of Vocational Mechanical Engineering Jurnal Pengabdian Kepada Masyarakat Jurnal Inkofar
Suprapto Suprapto
Fakultas Teknik Universitas Veteran Bangun Nusantara Sukoharjo
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Pengembangan Blade Pemotong Berbasis PLA Hasil 3D Printing dengan Penguat Plat Stainless untuk Meningkatkan Konsistensi Dimensi Pelet pada Mesin Produksi Pakan Ikan Rian Prasetyo; Ainur Komariah; Suprapto Suprapto; Maria Puspita Sari
Jurnal Aplikasi Ilmu Teknik Industri (JAPTI) Vol. 7 No. 1 (2026)
Publisher : Universitas Veteran Bangun Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32585/japti.v7i1.8250

Abstract

The cutting blade used in pellet production machines directly affects the dimensional consistency of produced pellets. Polymer-based blades manufactured using 3D printing offer advantages in production cost and fabrication flexibility, but still have limitations in mechanical durability under repeated use. This study aimed to develop a cutting blade made of PLA (Polylactic Acid) using 3D printing technology with a 2 mm stainless steel reinforcement at the blade tip, and to evaluate its effect on pellet length stability in a pellet production machine. The blade was designed using SolidWorks and fabricated using Fused Deposition Modeling (FDM) with a 0.4 mm nozzle, 0.22 mm layer height, 100% infill, 60°C bed temperature, 210°C extruder temperature, and 4500 mm/min printing speed. Testing was conducted using a pellet machine operating at 70 rpm for 6 cycles, with 200 g of feed material per cycle and 8 pellet samples measured in each cycle. The results showed that the full PLA blade experienced an increase in average pellet length from 4.99 mm to 7.05 mm, while the hybrid blade only increased from 3.78 mm to 4.22 mm. One-Way ANOVA results indicated that testing cycles significantly affected pellet length in both the full PLA blade (F = 365.015; p < 0.001) and the hybrid blade (F = 61.255; p < 0.001). The study concludes that stainless steel reinforcement resulted in more stable pellet dimensions during repeated testing, compared to full PLA blades.
ANALISIS SISTEM ANTRIAN PELAYANAN DI BANK JATENG KANTOR UNIVET DENGAN METODE WIN QS Darsini; Mathilda Sri Lestari; Suprapto
INKOFAR Vol. 9 No. 2 (2025)
Publisher : Politeknik META Industri Cikarang

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Abstract

Queueing problems at service facilities often lead to long waiting times during peak hours. At the Bank Jateng service counter located at Univet, which serves both students and surrounding residents, queue congestion frequently occurs at the beginning of the month and during certain service hours. This study aims to analyze the queueing system at the Bank Jateng Univet Office using a single-channel, single-phase (M/M/1) queueing model. The analysis was conducted using WinQSB software based on primary data collected through direct observation during operational hours and interviews with bank staff. The results show that the average customer arrival rate (λ) was 23 customers per hour, while the service rate (μ) was 26 customers per hour. The average number of customers in the system (Ls) was 11 people, with an average queue length (Lq) of 10 people. The average time spent in the system (Ws) was 0.5 hours. The service facility utilization rate (ρ) reached 88.46%, indicating a high workload level. Although the system operates under stable conditions, service capacity improvements are recommended to reduce waiting times during peak periods.
PELATIHAN DASAR 3D PRINTING DALAM DESAIN PRODUK UNTUK SISWA SMK Suprapto Suprapto; Rian Prasetyo; Darsini Darsini
JURNAL PENGABDIAN KEPADA MASYARAKAT Vol. 6 No. 1 (2025): Jurnal Pengabdian kepada Masyarakat
Publisher : LPPM Universitas Kahuripan Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51158/f4s2zp40

Abstract

Untuk menjadi sumber daya manusia yang handal dalam era revolusi industri 4.0, siswa harus memperoleh keterampilan dan kemampuan di bidang teknologi berbasis digitalisasi. Teknologi 3D printring saat ini adalah salah satu teknologi yang sedang berkembang. Ini adalah alat atau mesin yang dapat mencetak berbagai benda tiga dimensi yang utamanya terbuat dari plastik. Dalam industri manufaktur, desain merupakan elemen penting dalam perancangan produk. SMK Pancasila 3 Baturetno Wonogiri adalah jasa pendidikan kejuruan program keilmuan keteknikan. Tentunya harus mampu mengikuti perkembangan teknologi baru, salah satunya adalah 3D printing. Tujuan pelatihan dasar 3D printing ini adalah untuk memberikan pengetahuan dan keterampilan tentang cara menginstal, mengoperasikan, dan merawat mesin 3D printing. Kegiatan pelatihan ini dilaksanakan pada tanggal 26 Februari 2025 dengan peserta sebanyak 15 siswa. Metode pelatihan mencakup teori dan praktik. Materi pelatihan meliputi teori dasar, instal software SolidWoks untuk desain produk, pengenalan mesin 3D print dan bahan filament, serta praktik Evaluasi dikakukan dengan pre-test dan post-test untuk mengukur progress pemahaman dan keterampilan peserta. Berdasarkan hasil kegiatan pelatihan yang telah dilakukan menunjukkan bahwa peserta mampu menyerap materi pelatihan dengan baik dengan peningkatan skor post-test dari pre-test yaitu 44, 4 %. Peserta juga mampu melakukan instalasi, membuat model 3D dan demontrasi menggunakan mesin 3D print Ender-3 V2 dengan baik. Dampak dari pelatihan ini kepada pihak SMK yaitu meningkatkan kesadaran tentang pentingnya peningkatan kompetensi dan keterampilan salah satunya teknologi 3D printing yang bermafaat di dunia industri.
Co-Authors Ainur Komariah Ainur Komariah Amellia Ayu Safira Arif Pibisono Budi Wibowo Darsini Darsini Darsini Darsini darsini Firza Asep Saputra Jhodi Pratama Maria Puspita Sari Maria Puspita Sari Mathilda Sri Lestari Mathilda Sri Lestari Rahmatul Ahya Rahmatul Ahya Rahmatul Ahya Rian Prasetyo Saiful Ahmad Yustinus Nandha Dian