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All Journal Mekanika: Majalah Ilmiah Mekanika Mitra Akademia: Jurnal Pengabdian Masyarakat Jurnal Sains Student Research
Ahmad Bustomi
Politeknik Negeri Jakarta
Humanities Economics, Econometrics & Finance Environmental Science Industrial & Manufacturing Engineering Social Sciences Other

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Development of a Worm–Spur Gear-Based Smart Motorised Valve for Intelligent Agricultural Irrigation Systems Muhamad Hanhan Nugraha; Andy Permana Rusdja; Muhammad Prasha Risfi Silitonga; Anes Inda Rabbika; Ahmad Bustomi; Zezero Meo CA; Risat Dwi Y
Mekanika: Majalah Ilmiah Mekanika Vol 25, No 1 (2026): MEKANIKA : Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v25i1.109595

Abstract

Agricultural irrigation systems require precise, effective, and efficient automatic valves; however, in practice, most of the technology used remains relatively simple, often leading to torque problems, leaks, and control limitations. This research aims to design an SDGMOV based on a worm-spur gear transmission and integrated with an IoT control system to support agricultural water regulation. The research methods include torque measurement using digital scales, CAD design and 3D printing with PLA, calculation of valve hydrostatic pressure, and force analysis using FEA. The control system was developed using an ESP32 microcontroller connected to a mobile application to enable remote monitoring and operation. The study’s results showed that the torque requirement of 1.62 N.m could be safely met by a servo motor that has a torque of 3.43 N.m. At the same time, FEA analysis of the bracket and cover revealed that the stress levels remained below the material’s permitted stress, with a FOS value exceeding 1.5. Additionally, the hydrostatic pressure calculation was significantly lower than the material’s strength, ensuring its safety for use. The implementation of the ESP32-based control system ensures stable, precise remote operation, enabling the SDGMOV design to enhance the precision, efficiency, and reliability of water distribution. 
Dampak Pelatihan Pengoperasian dan Perawatan Mesin Pencacah Sampah Plastik Bagi Komunitas Ciliwung Depok dan Warga RW 02 Pancoran Mas Depok Adi Syuriadi; Dianta Mustofa Kamal; Ahmad Bustomi; Arifia Eka Yuliana; Andy Permana Rusdja; Muhamad Hanhan Nugraha
Mitra Akademia: Jurnal Pengabdian Masyarakat Vol 9 No 1 (2026): Mitra Akademia: Jurnal Pengabdian Masyarakat
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Jakarta

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Abstract

The issue of biomass waste along the Ciliwung River and household waste, poses significant environmental risks. Chopper technology has emerged as a potential solution to convert plastic waste into valuable products, in this case, plastic pellets. This community service initiative aims to enhance participants' skills in operating and maintaining chopper machine, which is used to convert plastic bottle waste into plastic pellets. The training was conducted over one day with 20 participants from the Ciliwung Depok Community and residents in RW 02, Pancoran Mas District, Depok City. The activities included theoretical presentations, equipment demonstrations, hands-on practice, and evaluations through pre-tests and post-tests. Data were analyzed using the Paired Two Sample for Means method. The training demonstrated a significant improvement in participants' knowledge and skills, as evidenced by a statistically significant difference in the average scores of the pre-test and post-test (p-value < 0.05). The results indicate that the training had a substantial impact on the participants' abilities before and after the training. Similar programs are expected to be implemented in other communities to raise environmental awareness and promote the use of eco-friendly technologies.
Analisis Penyebab Diesel Engine Low Power MTU 10V1600 Dengan Metode 7 Step Troubleshooting Sukron Athoillah Rasyid; Rahmat Noval; Ahmad Bustomi
JOURNAL SAINS STUDENT RESEARCH Vol. 4 No. 5 (2026): Oktober: Jurnal Sains Student Research
Publisher : CV. KAMPUS AKADEMIK PUBLISING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/jssr.v4i5.12432

Abstract

The diesel engine MTU 10V1600 installed in the P01912 power car unit experienced a low power phenomenon that reduced its operational performance. This study aims to analyze the root cause of the failure using a descriptive qualitative method, with data collected through field observation, technician interviews, and literature study, integrated with the 7 Step Troubleshooting method, Root Cause Analysis (RCA), and a fishbone (Ishikawa) diagram based on the 5M categories (Man, Machine, Method, Material, Measurement). The investigation found that the main root cause of the low power was a failure in the air intake and exhaust system, consisting of massive deposits on the turbocharger compressor blades, total blockage of the intercooler passages, and a clogged air filter element, which collectively restricted the air supply to the combustion chamber and reduced engine speed from the standard 1,500 RPM (50 Hz) to 1,402 RPM (45.2 Hz). Corrective actions, namely turbocharger replacement and intercooler cleaning, successfully restored the engine output power to the manufacturer's standard specification of 400 kW (536 HP) at 1,500 RPM and 50 Hz, as confirmed by a running and performance test. This study recommends an update to the preventive maintenance Standard Operating Procedure (SOP), including daily dust indicator inspection, hour-meter-based air filter replacement, and periodic boost pressure monitoring, to prevent recurrence of similar failures in power car units in the future.
Co-Authors Adi Syuriadi Andy Permana Rusdja Anes Inda Rabbika Arifia Eka Yuliana Kamal, Dianta Mustofa Muhamad Hanhan Nugraha Muhammad Prasha Risfi Silitonga Rahmat Noval Risat Dwi Y Sukron Athoillah Rasyid Zezero Meo CA