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All Journal Jurnal Teknologi FLYWHEEL : Jurnal Teknik Mesin Untirta Jurnal Rekayasa Mesin Journal of Research and Technology Machine : Jurnal Teknik Mesin Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) JURNAL KAJIAN TEKNIK MESIN Jurnal Konversi Energi dan Manufaktur Jurnal Pendidikan Teknik Mesin Undiksha Prosiding Konferensi Nasional PKM-CSR Jurnal Pengabdian Teknologi, Ekonomi dan Humaniora Jurnal Sains & Teknologi Fakultas Teknik Universitas Darma Persada Prosiding SNTTM
yefri chan
Program Studi Teknik Mesin Universitas Darma Persada
Aerospace Engineering 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 Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Social Sciences Transportation

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Pengembangan Dongkrak Gunting Elektrik Berbasis Arduino untuk Optimalisasi Perbaikan Kendaraan -, Erwin -; Sihabudin Zuhri, Tubagus; Chan, Yefri; Daryus, Asyari
Jurnal Sains & Teknologi Fakultas Teknik Universitas Darma Persada Vol. 15 No. 1 (2025): Jurnal Sains & Teknologi
Publisher : Fakultas Teknik Universitas Darma Persada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70746/jstunsada.v15i1.524

Abstract

Pengembangan dongkrak gunting elektrik berbasis Arduino dengan kapasitas angkat 2,1ton merupakan inovasi yang didesain untuk meningkatkan efisiensi waktu dan keselamatan dalam proses perbaikan kendaraan. Latar belakang penelitian ini berakar pada kebutuhan bengkel dan pengguna kendaraan yang menginginkan proses pendongkrakan lebih cepat, sederhana, serta aman, khususnya ketika pengoperasian alat dilakukan oleh pengguna yang memiliki keterbatasan fisik atau tingkat keahlian rendah. Tujuan penelitian ini untuk mengembangkan, dan mengevaluasi dongkrak gunting manual menjadi dongkrak gunting elektrik berbasis Arduino melalui penambahan motor DC 12 Volt dan remote control sebagai pengendali utama alat. Penelitian ini dimulai dari studi literatur, desain alat, perakitan, hingga pengujian performa waktu angkat pada berbagai beban kendaraan. Hasil pengujian menunjukkan dongkrak elektrik berbasis Arduino mampu mengangkat beban 1.450kg hanya dalam waktu rata-rata 2 menit—jauh lebih cepat dibandingkan dongkrak manual yang membutuhkan hingga 8–10 menit untuk beban serupa, sehingga terciptanya alat bantu perbaikan kendaraan yang lebih efisien, ergonomis, dan aplikatif di berbagai situasi darurat. Kontribusi penelitian ini menawarkan solusi teknologi tepat guna yang dapat mempercepat pekerjaan, mengurangi risiko kecelakaan, serta menjadi rujukan lanjut dalam pengembangan otomasi alat angkat kendaraan di industri otomotif nasional.
Utilization of Environmentally Friendly Energy in Organic Fertilizer Processing Machine Esye, Yendi; Asbanu, Husen; Faturachman, Danny; Chan, Yefri
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 4 (2024): December 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i4.1285-1294

Abstract

Agriculture is the primary livelihood for most of Indonesia's population, which has vast agricultural land. However, there remains a dependency on chemical fertilizers, which degrade soil quality compared to organic farming that can optimize plant health and productivity. The energy needs in the agricultural sector, including mechanization and fertilizer production, are critical but still heavily reliant on fossil fuels. It is, therefore, essential to reduce this dependency by utilizing environmentally friendly alternative energy sources. This study examines the use of solar energy to power machines in the process of producing organic fertilizer. The tools used in the study include a 100 Wp solar panel, solar energy conversion components, a 12 Volt 33 Ah battery, a ¼ Hp electric motor, a voltage and current meter, a temperature gauge, a sunlight intensity meter, and an organic fertilizer processing machine. The research method analyzes several variables, including sunlight intensity, power, voltage, current, charging time, and battery usage. The study found that the solar panel used was insufficient to power the ¼ HP motor, requiring the addition of three more solar panels and batteries to meet the motor's power requirement of 233 watts. Battery charging tests required 3 hours, and battery usage for machine operation without solar panel installation lasted 1 hour and 40 minutes, while battery usage for machine operation with solar panel installation lasted 6-7 hours. Keywords: Environmentally friendly energy, Fertilizer crushing machine, Organic fertilizer, Solar energy.
The effect of quality control standard implementation for quality improvement of the casting process on the jewellery manufacturing industry Erwin; Chan, Yefri; Lenardo, Yovi; Supriatna, Ade; Faturachman, Danny
Journal of Research and Technology Vol. 10 No. 1 (2024): JRT Volume 10 No 1 Juni 2024
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v10i1.1206

Abstract

The high demand for jewellery products increases significantly every year, but the export requirements of the products demand high quality. So, efforts are needed to improve quality, support cost savings, reduce energy needs, and improve work safety, especially in the casting process of jewellery products. This study aims to analyze the implementation of practical quality control standards to improve the quality of jewellery product casting. This research method uses a Plan-Do-Check-Action process approach that refers to ISO 9001, 14001 and 45001 standards. Implementing the PDCA (Plan-Do-Check-Action) process approach adopted in developing quality control methods in the jewellery casting process proved effective, resulting in casting shrinkage of 0.2 kg below the established standard of 0.7 – 1 kg. Controlling temperature casting below the melting point can also provide energy savings and heat control of the casting process to reduce occupational safety and health hazards. PDCA quality control methods can improve the quality of casting jewellery products by reducing porosity defects and shrinkage, saving energy, and reducing occupational safety hazards. This research provides an effective quality control method for the jewellery casting production process regarding quality improvement, environmental management, and safety to achieve the Company's sustainability.
Engineering Drawing Training for High School/Vocational School Teachers in Jakarta Using AUTOCAD MECHANICAL Herry Susanto; Husen Asbanu; Yefri Chan; Yendi Esye; Darsono
JEPTIRA Vol 2 No 2 (2024)
Publisher : Fakultas Teknik Universitas Darma Persada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70491/jep.v2i2.70

Abstract

The primary objective of this community service initiative is to provide training to high school and vocational school instructors in Jakarta on the use of AutoCAD Mechanical for engineering drawing. AutoCAD Mechanical offers sophisticated automation features and tools to enhance the accuracy and productivity of technical drawings. The training was conducted online, which enabled a wide range of participants to participate. The methodology comprised a pre-test to evaluate initial knowledge, interactive sessions to convey material, and a post-test to evaluate learning outcomes. The training was attended by a total of 33 participants. The findings suggest that the majority of participants developed a more comprehensive comprehension of the ethical implications and precision of AI-based tools. The discussion emphasizes the efficacy of online training in improving the understanding of AutoCAD Mechanical among instructors. For future enhancements and future reference, documentation was maintained, which encompassed participant engagement and training activities. This activity enhances the proficiency of educators in the utilization of digital tools for the purpose of mechanical engineering education.
Overview of LabVIEW as a Graphical Programming Tool for Developing Industrial Technology Proficiency Reza Istoni; Yefri Chan; Nur Hasanah; Sarah Isniah; Budi Sumartono; Suzuki Syofian; Timor Setiyaningsih
JEPTIRA Vol 3 No 1 (2025)
Publisher : Fakultas Teknik Universitas Darma Persada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70491/jeptira.v3i1.94

Abstract

The purpose of this session is to expose participants with technical and vocational educational backgrounds to LabVIEW graphics programming software. In technical and industrial domains like biotechnology, aircraft, and telecommunications, LabVIEW is a commonly used system development tool. Hands-on practice and a demonstrative approach are used in the in-person instruction. LabVIEW's foundations, industrial applications, and hardware and software integration are all covered in the curriculum. The training results show that participants have a better understanding of visual programming and its possible uses in the business. This program is a component of a larger strategy to promote Industry 4.0-aligned technological literacy.
Design and Development of a Vertical-Shaft Organic Waste Chopper Machine with a Top-Mounted Agitator Susanto, Herry; Chan, Yefri; Pratama, Juan; Siregar, Rolan; Ferdiansyah, Rio; Mustofa, Hidayat; Mubarok, Muhammad Fauzan
Jurnal Rekayasa Mesin Vol. 21 No. 1 (2026): Volume 21, Nomor 1, April 2026
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v21i1.7431

Abstract

Conventional organic waste chopping machines predominantly utilize horizontal shaft configurations, which are highly susceptible to asymmetric load distribution and present ergonomic challenges during maintenance. As an innovative solution, this study presents the conceptual design of a vertical-shaft chopping machine integrated with a hydraulic-actuated top-head system to enhance the efficiency of particle size reduction. The scope of this research is strictly confined to theoretical mathematical modeling and numerical simulations. The design process complies with the ASME B106.1M standard for transmission shafts and EN 13683 for operational safety parameters, excluding experimental fabrication. A comprehensive analysis was conducted on three primary materials—Mild Steel (MS), Stainless Steel 304 (SS 304), and Stainless Steel 316L (SS 316L)—under fluctuating waste loads ranging from 10 kg to 35 kg. The analytical results demonstrate several crucial findings: the minimum safe shaft diameter ranges from 16 mm (utilizing SS 316L at a 10 kg load) to 28 mm (utilizing MS and SS 304 at a 35 kg load). Furthermore, the agitator's power requirement exhibits a strictly linear increase corresponding to the applied load (from 1.34 kW to 4.68 kW), whereas the hydraulic system operates efficiently with a constant power profile of 0.25 kW. Overall, the vertical shaft configuration significantly promotes symmetrical force distribution, while the hydraulic system ensures safe and immediate access to the chopping chamber. The proposed design demonstrates substantial structural, operational, and ergonomic advantages, establishing a robust theoretical foundation for future development and experimental fabrication.
Drying Characteristics of Pine Wood (Pinus merkusii Jungh. et de Vriese) Using Hot Air, Infrared, and Combined Infrared-Hot Air Yefri Chan; Dwi Aries Himawanto; Budi Kristiawan; Indri Yaningsih; Erwin Erwin
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 3 (2025): June 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i3.772-780

Abstract

This research aims to determine the drying characteristics of Merkusii pine wood (Pinus merkusii Jungh. et de Vriese) using three methods, including the hot air drying, infrared, and combined infrared-hot air. The drying characteristics included temperature distribution, reduction in moisture content, drying rate, wood surface temperature distribution, and specific energy consumption (SEC). The results show that the combined infrared-hot air drying method produces a faster drying time and the highest drying rate compared to the only hot air or only infrared drying method. The fastest drying time was 345 min at a treatment temperature of 90°C, air velocity of 3 m/s, and the greatest drying rate was 0.429 gr/min at a temperature of 80°C, air velocity of 3 m/s. Additionally, the combined infrared hot air method produces a more uniform temperature distribution on the wood surface and lower specific energy consumption, specifically 1027.15 MJ/kg. Keywords: Drying, Hot air, Infrared, Temperature.
Design of Internet of Things (IoT)-Based Control System on a Hybrid Drying Machine for Sengon Wood Pallets Yefri Chan; Suzuki Sofyan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 15 No. 1 (2026): February 2026
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v15i1.146-152

Abstract

This study aims to design and build a sengon wood pallet drying system with an Internet of Things (IoT) based system as a monitoring and control of drying parameters such as temperature, humidity and reduction of wood mass during the drying process. Drying of sengon wood pallet samples using a combined infrared-hot air method was carried out at temperatures of 65, 75 and 85 °C and at an air velocity of 2m/s. Observation involved wood moisture content, core temperature, chamber temperatures, and air humidity which were recorded every 10 min interval during drying process. Results showed that the IoT system can function well and make the sengon wood pallet drying process monitored and controlled remotely. Wood pallet sample reached optimum conditions with moisture content of 19% at a temperature test of 85 °C. At this condition average core temperature of sengon wood pallets of 67.05 °C was recorded and a drying time of 180 min was required. The longest drying time was at a test temperature of 65 °C, with an average core temperature of 56.37 °C, and a drying time of 370 min.
Co-Authors Ade Supriatna ADE SUPRIATNA Aep Saeful Uyun Aep Saepul Uyun Ahmad Fahrezi, Amar Asyari Asyari Daryus, Asyari Budhi Susetyo, Ferry Budi Kristiawan Budi Sumartono Budi Sumartono Danny Faturachman, Danny Dariyus, Asyari Darsono DARSONO Didik Sugiyanto Dwi Aries Himawanto Erwin Erwin - Erwin - - Erwin Erwin Erwin Erwin Erwin, Erwin - Fahmi Aldi Ferdiansyah, Rio Hernando Christian Herry Susanto Herry Susanto Husen Asbanu Husen Asbanu Indri Yaningsih Isniah, Sarah Juan Pratama Lenardo, Yovi Mubarok, Muhammad Fauzan Mustofa, Hidayat Novendri, Yos Nur Hasanah Nur Hasanah Rahardja, Istianto Budhi Resma Adi Pangestu Reza Istoni Saban, Muhamad Zaki Sarah Isniah Sihabudin Zuhri, Tubagus Siregar, Rolan Suzuki Sofyan Suzuki Syofian Suzuki Syofian Taopik, Angga Timor Setiyaningsih Timor Setiyaningsih Trisna Ardi Wiradinata Yendi Esye Yendi Esye