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All Journal Rekayasa Mesin VANOS Journal of Mechanical Engineering Education JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Jurnal Rekayasa Material, Manufaktur & Energi Martabe : Jurnal Pengabdian Kepada Masyarakat Bubungan Tinggi: Jurnal Pengabdian Masyarakat IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) J-ABDIPAMAS (Jurnal Pengabdian Kepada Masyarakat) Jurnal Pendidikan Teknik Mesin
Safri Gunawan
Pendidikan Teknik Mesin/Fakultas Teknik, Universitas Negeri Medan
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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PKM PENERAPAN MESIN CHOPPER DAN FERMENTASI DARI LIMBAH PERTANIAN UNTUK KEMANDIRIAN PAKAN TERNAK KELOMPOK TANI PLAMBOYAN DI DESA PARTIMBALAN, KECAMATAN BANDAR MASILAM, SIMALUNGUN Suprapto Suprapto; Henry Iskandar; Safri Gunawan; Agus Junaidi; Jubaidah Jubaidah; Imamul Khaira
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 9, No 6 (2026): MARTABE : JURNAL PENGABDIAN MASYARAKAT
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v9i6.%p

Abstract

Potensi limbah pertanian dan perkebunan dilingkungan sekitar desa sangat melimpah dan berpotensi dimanfaatkan sebagai sumber pakan ternak alternatif. Potensi ini belum dimanfaatkan secara optimal oleh peternak dikarenakan keterbatasan teknologi dan pengetahuan. Program Kemitraan Masyarakat (PKM) bertujuan meningkatkan kemandirian  Peternak Plamboyan di Desa Huta 1 Nagori Partimbalan, Kecamatan Bandar Masilam, Simalungun dalam pengolahan pakan bersumber dari limbah pertanian yang dapat diolah dalam bentuk pakan hijau dan fermentasi. Metode PKM menggunakan pendekatan partisipatif yang meliputi observasi lapangan, focus group discussion (FGD), persiapan teknologi, pelatihan teknis, demonstrasi, pendampingan implementasi, penguatan manajemen usaha sederhana, serta monitoring dan evaluasi. TTG Mesin Chopper digunakan untuk mencacah dan menghaluskan hijauan untuk mendapatkan ukuran lebih seragam dan mudah difermentasi, serta effisiensi waktu dan biaya. Hasil kegiatan menunjukkan peningkatan pengetahuan dan pemahaman mitra dalam pengoperasian dan perawatan mesin, prosedur fermentasi, serta pencatatan biaya produksi sederhana. Program ini memperlihatkan bahwa transfer teknologi tepat guna dari perguruan tinggi dapat menjadi solusi praktis dalam mengubah limbah pertanian menjadi pakan bernilai, sekaligus mendukung ekonomi sirkular, pemberdayaan desa, dan keberlanjutan usaha peternakan rakyat
EMPLOYMENT 5.0: THE RELATIONSHIP BETWEEN STUDENTS' PERCEPTION OF WELDING TECHNOLOGY COURSES AND THE WORK READINESS Sapitri Januariyansah; Dwiki Muda Yulanto; Batumahadi Siregar; Hasianna Nopina Situmorang; Safri Gunawan; Rahma Doni
Jurnal Dinamika Vokasional Teknik Mesin Vol. 10 No. 2 (2025)
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v10i2.92101

Abstract

Work readiness is an important factor in overcoming the high unemployment rate of college graduates. Various efforts have been made to improve the quality of work readiness, such as through welding technology courses. However, practical contributions measured through statistical analysis have never been made to date. The purpose of this study is to analyze the relationship between students' perceptions of welding technology courses and work readiness. This type of research was ex-post facto research with a quantitative approach. The data collection technique used a questionnaire technique. The data analysis technique used correlational inferential analysis. The results of the study indicate that students' perceptions of welding technology courses (X) have a relationship with work readiness (Y) in the moderate category (r = 0.577) with the amount of contribution based on the coefficient of determination (r2 = 0.333) which means that variable X contributes 33.3% to Y. Based on the regression coefficient (b = 0.228) which shows that if variable X increases by 1 unit then variable Y increases by 0.228. The implications of this study indicate that welding technology courses make a moderate contribution to improving work readiness
Pengaruh Penggunaan Variasi Bahan Bakar dan Beban Kelistrikan Terhadap Kinerja Engine Diesel Safri Gunawan; Mulia Mulia; Rahma Doni; Yanuardi Gulo; Muhammad Reza Pratama; Yodi Sitohang; Sofiya Vari Zan'nah; Dery Affandi
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 1 (2025): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i1.196

Abstract

The global energy crisis has driven efforts to find alternative fuels that are efficient and environmentally friendly. One focus is testing the performance of diesel engines against variations in fuel. This study aims to analyse the effect of diesel fuel types, including Bio Solar, Dexlite, and Pertamina Dex, with cetane numbers of 48, 51, and 53, respectively, on diesel engine performance in terms of power, torque and specific fuel consumption parameters at various levels of electrical load. The method used is an experiment involving a graded electrical load test ranging from 300 to 1500 Watts. Data were collected under stationary conditions at 1500 rpm using instruments such as voltmeters, ammeters, tachometers, and fuel burettes. The results show that Pertamina Dex produces the highest power at peak load due to its high cetane number, while Bio Solar provides the highest torque due to a longer combustion delay. The highest specific fuel consumption occurs in Pertamina Dex at low loads, while Bio Solar is more efficient at low load conditions.
Co-Authors Agus Junaidi Ayu Putri Ningsih Banu Nursanni Bustami Syam Dery Affandi Didik Rohmantoro Dwiki Muda Yulanto Efri Meldianto Fadhlah Sinurat Hanapi Hasan Hasianna Nopina Situmorang HENRY ISKANDAR Imamul Khaira Januariyansah, Sapitri Jubaidah Jubaidah Latifah R. Nurfazriah Lisyanto . Muhammad Reza Pratama Mulia Mulia Nur Basuki Rahma Doni Ria Dini Wanti Lubis Riadini Wanty Lubis Selamat Triono Siregar, Batumahadi Siti Ulgari Sofiya Vari Zan'nah Suprapto Suprapto Supriadi Susilo, Hendra Yanuardi Gulo Yatty Destani Sandy Yodi Sitohang