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All Journal Journal of Mechanical Engineering Learning Empowerment : Jurnal Pengabdian Masyarakat Pendas : Jurnah Ilmiah Pendidikan Dasar GERVASI: Jurnal Pengabdian kepada Masyarakat Jurnal Ilmiah Teknik Mesin "MEKANIK" Reswara: Jurnal Pengabdian Kepada Masyarakat Automotive Experiences Jurnal Polimesin
Gunawan, Safri
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PENGEMBANGAN MEDIA PEMBELAJARAN INTERAKTIF MATERI ALAT UKUR BERBASIS PROJECT BASED LEARNING (PjBL) MENGGUNAKAN CANVA DI KELAS X PROGRAM KEAHLIAN OTOMOTIF SMK GELORA JAYA NUSANTARA MEDAN Sitompul, Riyan; Yulia, Erma; Gunawan, Safri; Tambunan, Bisrul Hapis; Sumarno
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 11 No. 03 (2026): Volume 11 Nomor 03, September 2026 Publish
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v11i03.65029

Abstract

This study aims to analyze the development process, feasibility level, and effectiveness of interactive learning media based on Project-Based Learning (PjBL) using Canva, covering the topic of measuring instruments for 10th-grade students in the Automotive Engineering program at SMK Gelora Jaya Nusantara Medan. The research employs the Research and Development (R&D) method using the ADDIE (Analysis, Design, Development, Implementation, Evaluation) development model. The research subjects consisted of 30 10th-grade students. Data collection techniques included observation, interviews, questionnaires, and learning outcome tests (pre-test and post-test). Data analysis involved the Aiken’s V validation test and the calculation of N-Gain scores. The results indicate that the developed learning media achieved feasibility scores of 0.95 from the media expert, 0.94 from the instructional design expert, and 0.98 from the subject matter expert; all three ratings fall into the "valid" category. The large-group trial yielded an average score of 48.00 (80%), also categorized as valid. Effectiveness testing using N-Gain scores demonstrated that the learning media is effective in improving student learning outcomes. Thus, the Canva-based, PjBL-oriented interactive learning media for measuring instruments is proven to be feasible and effective for implementation in automotive vocational education.
Enhancing the Fuel Characteristics and Engine Performance of Mixed Plastic Waste Pyrolysis Oil through Directed Fractionation for Spark-Ignition Engines Tambunan, Bisrul Hapis; Gunawan, Safri; Daryanto, Eka; Hasan, Hanafi; Simanjuntak, Janter Pangaduan; Mohd Zulkifli, Nurin Wahidah
Automotive Experiences Vol. 9 No. 3 (2026): Issue in Progress
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.17076

Abstract

The global plastic waste crisis and the volatility of fossil fuel supplies necessitate sustainable alternative energy solutions. This study investigates the enhancement of mixed plastic waste pyrolysis oil through directed fractionation to produce a high-quality fuel for spark-ignition engines. A plastic waste mixture (25% PE, 25% PP, 25% PET, and 25% PS) was pyrolyzed at 350°C to produce Crude oil (CR), which was further refined into a Gasoline Fraction (GF) via distillation (50–200°C). Fuel samples were tested in their pure form and as blends with RON 90 petrol (10%, 30%, and 50% by volume). FTIR analysis confirmed that fractionation effectively eliminated long-chain hydrocarbons (the "wax band" at 720 cm⁻¹) which typically hinder atomization and combustion. Results showed that GF density (0.767 g/ml) aligns with ASTM D4806 standards (0.715–0.780 g/ml), unlike the CR blend which exceeded these limits at higher concentrations. Engine performance tests indicated that while GF10 closely matched the torque and power of RON 90 petrol, the CR50 blend suffered a drastic performance drop due to low calorific value and a high risk of knocking (RON 67.5). This study concludes that directed fractionation is a vital, low-cost method for converting heterogeneous plastic waste into a viable automotive fuel.
Co-Authors Atika, Liana Ayu Putri Ningsih Batubara, Agung Setia Bisrul Hapis Tambunan, Bisrul Hapis Didik Rohmantoro Eka Daryanto, Eka Eswanto, Eswanto Eswanto, Eswanto Hanapi Hasan Hargiani, Fransisca Xaveria Hasan, Hanafi HENRY ISKANDAR Januariyansah, Sapitri Jubaidah, Jubaidah Lisyanto . Lubis, Abdi Bimardotillah Lubis, Ria Dini Wanty Mohd Zulkifli, Nurin Wahidah Muhtadin Muhtadin Mulia Mulia Nur Rahmi, Wiwit Nursanni, Banu Pakpahan, Binsar Maruli Tua Rina, Wilda Selamat Riadi Simanjuntak, Janter Pangaduan Sitompul, Riyan Sumarno Suprapto Suprapto Susilo, Hendra Utomo, Bawon Yulia, Erma