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All Journal Rotasi Jurnal Teknik Transmisi JUPITER (Jurnal Pendidikan Teknik Elektro) Jurnal Taman Vokasi at-tamkin: Jurnal Pengabdian kepada Masyarakat Jurnal Teknologi Informasi dan Pendidikan STEAM Engineering : Journal of Science, Technology, Education And Mechanical Engineering Scientific Journal of Mechanical Engineering Kinematika G-Tech : Jurnal Teknologi Terapan Jurnal Pendidikan Teknik Mesin Undiksha JURNAL FLYWHEEL Jurnal Abdi Masyarakat Saburai (JAMS) Edu Cendikia: Jurnal Ilmiah Kependidikan Indonesian Community Journal Journal of Mechanical and Electrical Technology RING Mechanical Engineering JANUR
Yayi Febdia Pradani
Universitas Negeri Malang
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Pemberdayaan Masyarakat dalam Pengelolaan Sampah Melalui Teknologi Tepat Guna Alat Press Hidrolik di Bank Sampah Semangka 8, Desa Tambakasri Yayi Febdia Pradani; Dian Julianto Wahyudi; Danang Yugo Pratomo; Saifuddin Karim; Imam Muhatrom; Anggi Anggresita Wulandari
I-Com: Indonesian Community Journal Vol 5 No 3 (2025): I-Com: Indonesian Community Journal (September 2025)
Publisher : Fakultas Sains Dan Teknologi, Universitas Raden Rahmat Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/i-com.v5i3.7762

Abstract

Program pengabdian ini bertujuan memberdayakan masyarakat dalam pengelolaan sampah melalui edukasi dan penerapan Teknologi Tepat Guna (TTG) berupa alat pengepress botol plastik. Kegiatan dilaksanakan di Bank Sampah Semangka 8, Desa Tambakasri, pada 19 Juli 2025 dengan 40 peserta. Metode meliputi penyuluhan partisipatif, demonstrasi TTG, pelatihan teknis, dan advokasi keberlanjutan. Evaluasi dilakukan melalui pre-test dan post-test, yang menunjukkan peningkatan pemahaman signifikan, seperti pemahaman 3R dari 45% menjadi 92%. Sebanyak 90% peserta tertarik mempraktikkan pengelolaan sampah mandiri, dan alat TTG terbukti mampu mengurangi volume botol hingga 80%. Program ini mendorong inisiatif lanjutan seperti komposting dan daur ulang kreatif, serta mendukung pencapaian SDGs 11, 12, dan 13 melalui teknologi sederhana, edukasi efektif, dan kolaborasi warga.
Implementasi Mesin Perajang Rempah Otomatis untuk Meningkatkan Efisiensi dan Kapasitas Produksi UMKM Jamu Herbal Hanacaraka Herbs Malang Dwi Damara Agasta; Yayi Febdia Pradani; Khoirul Kamahmudin; Monalisa Wirawan; Amelia Dini Wulandari; Satya Rafi Eka Prayoga; Anggi Anggresita Wulandari; Prasasti Pambayun Anjarwati; Alfina Rahmadini; Asrul Hidayat; Gita Sirril Qolbi; Falah Dova Ramanda
I-Com: Indonesian Community Journal Vol 5 No 3 (2025): I-Com: Indonesian Community Journal (September 2025)
Publisher : Fakultas Sains Dan Teknologi, Universitas Raden Rahmat Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/i-com.v5i3.7888

Abstract

Lonjakan permintaan jamu terkendala perajangan herbal UMKM yang lambat dan tidak seragam, sehingga ekstraksi kurang optimal dan kualitas tidak konsisten. Kegiatan pengabdian masyarakat ini bertujuan meningkatkan efisiensi dan kapasitas produksi UMKM Hanacaraka Herb di Kota Malang melalui penerapan mesin perajang rempah otomatis berbasis motor listrik. Dimana, proses perajangan manual yang lambat, membutuhkan banyak tenaga kerja, dan menghasilkan potongan tidak seragam. Metode pelaksanaan meliputi observasi lapangan, perancangan dan pembuatan mesin Teknologi Tepat Guna (TTG), pelatihan penggunaan, serta pendampingan di lokasi mitra. Mesin yang dihasilkan memiliki kapasitas ±100 kg/jam dengan hasil rajangan seragam dan higienis. Hasil penerapan menunjukkan peningkatan kapasitas produksi hampir lima kali lipat, pengurangan waktu produksi 75%, serta peningkatan keseragaman dan higienitas produk. Secara kualitatif, mesin ini memperbaiki konsistensi rasa dan warna jamu, menguatkan citra merek, meningkatkan efisiensi tenaga kerja, dan membuka peluang perluasan pasar. Penerapan TTG ini terbukti efektif menjawab kendala produksi UMKM jamu dan meningkatkan daya saingnya.
Enhancing Heat Treatment Learning for Mechanical Engineering Students: A Comparative Study of Corrosion Inhibitor Effectiveness on Aluminium Protection Saifuddin Karim; Pradani, Yayi Febdia; Pratomo, Danang Yugo; Muhtarom, Imam; Widowati, Tamara Rahma; Wahyudi, Dian Julianto; Wulandari, Amelia Dini; Subekhi, Prido
Jurnal Teknik Vol 23 No 2 (2025): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v23i2.650

Abstract

Corrosion still remains a serious problem in the application of aluminum alloys, such as Aluminum 6061, which is one of the most widely used aluminum alloys in industries because of its high strength-to-weight ratio. However, the material degrades when exposed to aggressive environments, such as acidic, alkaline, or salty solutions, and the control of corrosion has been achieved with the use of synthetic chemical inhibitors, but the increasing concern of environmental and health risks has shifted attention to more eco-friendly alternatives. The present study aimed at evaluating the efficacy of three vegetable oils (coconut oil, palm oil, and soybean oil) as environmentally friendly corrosion inhibitors for Aluminum 6061, and the alloy coupons were subjected to three different corrosive solutions (hydrochloric acid, sodium hydroxide, and sodium chloride). A quantitative experimental procedure was employed to determine the corrosion rate through the measurement of the weight loss of aluminum coupons prior to and after the immersion, and the results showed that all three oils were able to reduce the corrosion rate when compared to the samples without any inhibitor. Among them, coconut oil gave the best protection, followed by soybean oil and palm oil, because the adsorption of the organic compounds and fatty acids in the oils onto the aluminum surface formed a thin layer that separated the metal and the corrosive environment. Consequently, the results also showed that the use of bio-based oils can be a promising alternative to synthetic corrosion inhibitors in industries that use aluminumbased materials.
Physicochemical Characterization and Epoxidation of Jatropha Curcas Oil for Eco-Friendly Engine Lubricant Applications Putra, Agus Dwi; pradani, Yayi Febdia; Dewi Izzatus Tsamroh; Zakaria, Yahya; Mahfudi Sahli Subandi
Jurnal Teknik Vol 23 No 2 (2025): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v23i2.651

Abstract

This study aims to explore the potential of castor oil (Jatropha curcas L.) as a plant-based alternative engine lubricant and compare it to commercial mineral-based lubricants. The research process includes drying Jatropha seeds and epoxidizing the oil using oxidizing agents (H₂O₂) and (CH₃COOH) with variations of (1:0.075; 1:0.15; 1:0.225; and 1:0.30). Chemical testing was conducted to analyze the acid number of the oil, while physical testing was carried out to measure its viscosity index, flash point, and pour point. The results show that Jatropha oil has an acid number of 5.30, a viscosity index of 217, a flash point of 270°C, and a pour point of 0°C. Therefore, Jatropha oil demonstrates potential as a base material for engine lubricants due to its relatively high flash point, which approaches that of polyol ester (POE)-based oils. However, further modification with additives is required to lower its pour point, ensuring it remains fluid in colder climates such as those in subtropical regions.
INTEGRATING AERODYNAMIC OPTIMIZATION AND SIMULATION TO ENHANCE UNMANNED ARIAL VEHICLE PERFORMANCE AND LOWER CARBON EMISSIONS Yahya Zakaria; Mochamad Viky Afandy; Abiyu Ramadhan; Riduwan Prasetya; Yayi Febdia Pradani; Danang Yugo Pratomo; Misbachudin Misbachudin
Scientific Journal of Mechanical Engineering Kinematika Vol 11 No 1 (2026): SJME Kinematika June 2026
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v11i1.835

Abstract

This study develops an integrated aerodynamic optimization and simulation pipeline for fixed‑wing Unmanned Aerial Vehicle (UAV) to improve mission efficiency while projecting lower carbon emissions through energy use reductions. A parametric geometry with airfoil selection, aspect ratio, sweep, taper, twist, and winglet controls is optimized using a multi‑objective genetic algorithm coupled to Computational Fluid Dynamics (CFD) simulation. Objectives minimize drag and mission power while maximizing lift‑to‑drag under representative cruise conditions. A data‑efficient power model links aerodynamic states to per‑mission energy, enabling rapid iteration as a surrogate within the optimization loop. To ensure reliability, the CFD solver was validated against NASA experimental benchmarks for the NACA 0012 airfoil, achieving a margin of error below 3%. The optimization results demonstrate a significant shift from traditional baseline designs. By adopting a non-symmetric air foil combination, NACA 4412 root and NACA 2412 tip, increasing the aspect ratio to 9.8, and implementing specific winglet cant angels, the optimized design achieved a 44.7% reduction in aerodynamic drag. Visual analysis through velocity and pressure contours confirmed cleaner flow fields and weakened wingtip vortices, which directly translate to lower propulsion power. Ultimately, this study delivers a reproducible design pipeline an a Pareto-optimal map for balancing aerodynamic efficiency with structural practicality. While emissions were not measured directly, the documented 44.7% reduction in drag and corresponding decrease in energy demand provide a strong indicator for the potential to lower the carbon footprint of future UAV operations.
Pengaruh Hybrid Learning Berbasis Tutor Sebaya terhadap Hasil Praktik Pengelasan pada Siswa SMK : The Effect of Peer Tutor-Based Hybrid Learning on Welding Practice Outcomes in Vocational High School Students Denhas Wicaksono; Dwi Agus Sudjimat; Yayi Febdia Pradani
Edu Cendikia: Jurnal Ilmiah Kependidikan Vol. 6 No. 01 (2026): Research Articles, April 2026
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/educendikia.v6i01.8211

Abstract

This study aims to examine the effect of a peer-tutor-based Hybrid Learning model on SMAW welding performance in the 3G position among 11th-grade Welding Engineering students at SMKN 10 Malang. This study involved 2 groups of students: those who studied using peer-tutor-based hybrid learning and those who studied without peer-tutor assistance. The research method used was a quasi-experimental posttest-only control-group design. The research subjects comprised two classes: a control and an experimental class, each with 30 students. The research instrument was an SMAW welding practice test in the 3G position, assessed using a welding results assessment rubric. Data were analyzed using descriptive statistics, the Kolmogorov–Smirnov normality test, Levene's homogeneity test, and an independent-samples t-test. The results showed a significant difference in students' welding practice between the control and experimental classes, with a significance value of sig. <0.05. Thus, it can be concluded that the peer-tutor-based hybrid learning model has a significant effect on SMAW welding performance in the 3G position for vocational high school students. The application of a peer-tutor-based hybrid learning model has a significant effect on SMAW welding performance in the 3G position for students at SMKN 10 Malang, compared to the control class without peer-tutor assistance.
Bahasa Inggris Luthfansyah; Dwi Agus Sudjimat; Yayi Febdia Pradani
Jurnal Teknologi Informasi dan Pendidikan Vol. 19 No. 2 (2026): Jurnal Teknologi Informasi dan Pendidikan
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jtip.v19i2.1116

Abstract

This research is motivated by the low learning outcomes of students in the Technical Drawing subject at Vocational Schools due to the dominance of conventional methods that are less able to visualize objects comprehensively. The purpose of this study is to analyze the effect of using digital flipbook learning media on the learning outcomes of class X students of Welding Engineering Expertise Concentration at SMK Negeri 10 Malang. The research method used is quantitative with a One Group Pretest-Posttest design on 70 students selected through a total sampling technique. The research instrument is a validated multiple-choice objective test, and the data are analyzed using the Paired Sample T-Test and N-Gain tests. The results of the study showed a significant increase in the average value from 79.91 to 90.89 with a significance value of 0.000 (p < 0.05). The effectiveness of media use is in the "Medium" category with an average N-Gain of 0.5611. The conclusion of this study states that digital flipbook media has a real influence in improving students' conceptual understanding and cognitive achievement in technical drawing competencies. This media is recommended as a strategic tool to support innovative digital learning transformation in the Independent Curriculum era.
The Effect of Thermostat Condition on Thermal Stability and Combustion Emission Efficiency in an Inline 4-Cylinder Gasoline Engine Agus Dwi Putra; Rangga Ega Santoso; Yayi Febdia Pradani; Diama Rizky Septiawan; Faqih Fadillah; Nicko Nur Rakhmaddian
RING ME Vol 6 No 1 (2026): RING Mechanical Engineering
Publisher : Universitas Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33474/rme.v6i1.25320

Abstract

This study investigates the effect of thermostat conditions on thermal stability and exhaust emission efficiency in a 1,300 cc inline 4-cylinder gasoline engine. The novelty of this research lies in the integrated evaluation of thermostat removal and thermostat failure on both engine temperature stability and combustion emissions under identical operating conditions. A quantitative experimental method was applied using three thermostat conditions: normal thermostat, without thermostat, and clogged/damaged thermostat. Cooling system temperature and exhaust emissions (CO, HC, and CO₂) were measured at idle speed (800–1000 rpm) for 10 minutes with 2-minute intervals. The data were analyzed using descriptive comparative statistical analysis. The results show that the normal thermostat maintained the most stable operating temperature, reaching 95.8°C at the 8th minute. In contrast, the engine without a thermostat experienced unstable temperature increases and reached 93.4°C at the 10th minute, while the clogged thermostat condition produced the highest temperature of 96.6°C, indicating overheating potential. Removing the thermostat increased CO emissions from 0.01% to 0.04% and HC emissions from 31.7 ppm to 52.3 ppm. These findings confirm that thermostat condition significantly affects engine thermal stability and combustion efficiency; therefore, thermostat removal is not recommended.
Development of the RAKHMATTRIX Gamification Platform Based on the Mystery Object Challenge Rakhmat Witdiyanto; Yayi Febdia Pradani; Marsono Marsono
Jurnal Teknologi Informasi dan Pendidikan Vol. 19 No. 2 (2026): Jurnal Teknologi Informasi dan Pendidikan
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jtip.v19i2.1146

Abstract

This study aimed to develop RAKHMATTRIX gamification media based on Mystery Object Challenge in Computer Aided Design (CAD) learning using the ADDIE development model. The research was conducted at SMK Muhammadiyah 1 Kepanjen for tenth-grade students in CAD learning. The developed media combines gamification elements, mystery box challenges, and blind design challenge activities to encourage students’ spatial visualization and creativity in creating 2D and 3D designs using Autodesk Inventor. The research stages consisted of analysis, design, development, implementation and evaluation. Data collection techniques included expert validation and students response questionnaires. Media validation was carried out by media experts and material experts to determine the RAKHMATTRIX gamification media obtained a very feasible category based on expert validation results. In addition, students responses indicated that the developed media was able to create a more interactive, interesting, and student-centered learning environment in CAD learning. Therefore, the RAKHMATTRIX gamification media is feasible to be used as a learning medium in CAD subjects.
Fish dryer machine technology based on cartridge heater through the utilization of immune stimulant ions Prasasti Pambayun Anjarwati; Marsono Marsono; Yayi Febdia Pradani
Jurnal Taman Vokasi Vol 13 No 1 (2025): Vol. 13 No. 1 (2025)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/jtvok.v13i1.18965

Abstract

The Coordinating Minister for Maritime Affairs believes that Indonesia is experiencing an increase in exports, particularly in the fisheries sector. This is very important because Indonesian waters consist of 44.7% fish, and fisheries are one of Indonesia's key commodity advantages. However, abundant natural resources alone do not guarantee that a nation will become superior if not accompanied by good human resources as well. The issue of fish drying is a crucial problem in the fish processing sector, including for UKM Jaya Utama in Probolinggo City. UKM Jaya Utama still uses traditional drying methods, relying on sunlight as the main drying tool. As a result, UKM Jaya Utama faces drying challenges during the rainy season. The cartridge heater-based fish dryer machine is a machine specially designed for drying and preservation, offering an alternative solution for fish drying during the rainy season and extending the shelf life of the fish. The research method used was an R&D approach with mackerel fish as the research sample, with a capacity of 10 to 15 kg per drying cycle. The machine trial results showed improved work efficiency by reducing the drying duration from 6 hours without the machine to just 2 hours, with potential profit increases of up to 3.6 times.
Co-Authors Abiyu Ramadhan Agasta, Dwi Damara Ahmad Muflih Ahmad Saepuddin Alfina Dewi Anggraeni Alfina Rahmadini Amelia Dini Wulandari Anggi Anggresita Wulandari Anjarwati, Prasasti Pambayun Arlian Maulana Asrul Hidayat Bella Cornelia Tjiptady Bella Cornelia Tjiptady Chintia Dwi Wangsa Kuswardani Choirina, Priska Chuzaimatul Fitriyah Damar Tri Wicaksono Danang Yugo Pratomo Dedi Romadon Denhas Wicaksono Denhas Wicaksono Dewi Izzatus Tsamroh Diama Rizky Septiawan Diama Rizky Septiawan Dian Julianto Wahyudi Dian Julianto Wahyudi Dian Putri Noorhasanah Dimas Hani Saputra Dimas Prayoga Dwi Agus Sudjimat Dwi Damara Agasta Erlillah Rizqi Kusuma Pradani Falah Dova Ramanda Faqih Fadillah Fitriani, Indah Martha Ghufron, Wildanul Gita Sirril Qolbi harlin, harlin Ifan Bahtiar Imam Muhatrom Imam Muhtarom Imam Muhtarom Indah Martha Fitriani Karim, Saifuddin Khoirul Kamahmudin Khusni Mubarok Luchyto Chandra Permadi Permadi Lutfansyah Lutfansyah Luthfansyah M Dafid M. Zannur Habib Mahfudi Sahli Subandi Marsono Marsono Meditama, Ratna Fajarwati Misbachudin Misbachudin Moch Abdul Rozak Umar Mochamad Sulaiman Mochamad Viky Afandy Mohammad Omar AL Momani Mojibur Monalisa Wirawan Muchamad Hari Nugroho Muhammad Ana Zamzami Muhammad Arif Nur Huda Muhammad Hudan Rahmat Muhammad Rizki Chanda Nicko Nur Rakhmaddian Nicko Nur Rakhmaddian Nikmatus Sholikha Nugroho, Fahmi Setyo Permadi, Luchyto Chandra Prasasti Pambayun Anjarwati Prasasti Pambayun Anjarwati Putra, Agus Dwi Rahman, Rifki Zainur Rakhmat Witdiyanto Rangga Ega Santoso Ratna Fajarwati Meditama Ratna Fajarwati Meditama Riduwan Prasetya Rohman, Mojibur Saifuddin Karim Saifuddin Karim Saiful Hardiyanto Satya Rafi Eka Prayoga Subekhi, Prido Sugeng Pramudibyo Talifatim Machfuroh Talifatim Machfuroh, Talifatim Tamara Rahma Widowati Tjiptady, Bella Tjiptady, Bella Cornelia Widowati, Tamara Rahma Wulandari, Amelia Dini Yahya Zakaria Yahya Zakaria Yevi Puji Lestari Yuliana Aziza Yuliana Aziza Zainal Abidin Zamzami, Muhammad Rizal Akbar