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Trends in Mechanical Engineering Research
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 30254299     EISSN : 30256801     DOI : http://dx.doi.org/10.62870/timer.v1i2
Core Subject : Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering
TiMER: Trends in Mechanical Engineering Research is a blind-peer-review journal. TiMER mainly focuses on Mechanical Engineering fields. Detailed scopes of articles accepted for submission to TiMER are Renewable Energy, Sustainability, and Environmen; Fuel Technology; Material Mechanics; Biomaterial; Materials Science and Nanotechnology; Metals and metal alloys; Ceramics and Composites; Polymers and Plastics; Manufacturing; Control and Systems Engineering; Safety, Risk, Reliability, and Quality; Automotive Engineering; Computational Mechanics; and Mechanical engineering design.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 49 Documents
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EFFECT OF CATHODE AND ANODE SEAWATER ELECTROLYSIS ON EXHAUST EMISSIONS OF DIESEL ENGINE Agung Sudrajad; Mekro Permana Pinem; Sunardi Sunardi; Muhammad Zulfadly
Trends in Mechanical Engineering Research Vol 4, No 1 (2026): JUNE
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v4i1.40424

Abstract

The objective of research is determining the effect of seawater electrolysis on emission levels on exhaust gases from diesel engine. The research was examined at the Energy Conversion Laboratory, Department of Mechanical Engineering, Faculty of Engineering, Sultan Ageng Tirtayasa University. The experimental are focused on emissions of carbon monoxide (CO), Carbon Dioxide (C ), and Hydrocarbons (HC) from diesel engine. The research was conducted by diesel engine with engine speed of 1200 rpm, 1600 rpm, and 2000 rpm. The results show that of the average decrease of CO is 51.73% in the anode process and 22.73% in the cathode process. Moreover, emissions of C is 17% in the anode and 10.7% in the cathode. Also, an average decrease of HC is 31.3% in the cathode process and 26.1% in the anode process.
BREAKDOWN MAINTENANCE AND ROUTINE CARE OF THE BELT BUCKET ELEVATOR AT PT XYZ Achmad Abiel Fauzi; Miftahul Jannah
Trends in Mechanical Engineering Research Vol 4, No 1 (2026): JUNE
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v4i1.40871

Abstract

Within animal feed manufacturing, the belt bucket elevator stands out as a vital bulk-handling unit, tasked with lifting raw materials vertically from the conveyor to the mixing tank ahead of the pelleting stage. At PT XYZ the machine runs around the clock across three shifts (24 hours per day), an operating pattern that leaves its components highly sontoto exposed to accelerated wear. Field observations gathered during a two-month internship surfaced two damage patterns that kept recurring: the rubber belt turning brittle and cracking, and progressive thinning of the bucket lip driven by repeated abrasive contact with feed materials such as corn, soybean meal, and camelina-flower meal. Component service lives logged in the field hovered at only one to two years — far short of the manufacturer’s design figures of three to four years for the belt and two to three years for the bucket and the mounting bolts. This work investigates the root causes behind such premature failure, audits the preventive maintenance practice codified in internal SOP WI-03/MTN/C01, and frames a set of targeted improvements.
PERFORMANCE ANALYSIS OF FIXED PHOTOVOLTAIC SOLAR PANELS WITH 150° AND 30° TILT ANGLE VARIATIONS M.Zakarsyi Lilma Abid; Alviani Hesthi Permata Ningtyas
Trends in Mechanical Engineering Research Vol 4, No 1 (2026): JUNE
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v4i1.41367

Abstract

Solar energy is a type of renewable energy that can be turned into electricity through the use of solar panels that capture sunlight. Solar panels work best when they are positioned at the right angle to catch as much sunlight as possible. One important thing that affects how well they work is how tilted they are compared to the sun's position in the sky. This study is meant to look at how well solar panels work statistically when they are tilted at 30 degrees and 150 degrees. The research employed an experimental method by directly measuring voltage, current, output power, and light intensity on the solar panels. Data collection was conducted for 8 days from 08:00 to 16:00 WIB. The monitoring system utilized INA219 sensors to measure electrical parameters and BH1750 sensors to measure light intensity, integrated with an ESP32 microcontroller based on the Internet of Things (IoT). The results indicate that differences in tilt angle affect the amount of solar radiation received by the panel, which consequently influences the electrical energy produced. The solar panel with a 150° tilt angle demonstrated better performance because it received more optimal sunlight exposure, particularly from morning to midday. This condition resulted in higher voltage, current, power, and electrical energy output compared to the panel with a 30° tilt angle. Based on the calculations, the 150° tilt angle increased power and energy generation by 25.38% compared to the 30° tilt angle during the testing period. Therefore, the tilt angle of a solar panel significantly affects the overall performance of a solar energy system.
NUMERICAL SIMULATION OF THE PERFORMANCE OF A CFD-BASED SAVONIUS-DARRIEUS HYBRID WIND TURBINE WITH VARIATIONS IN COUPLING ANGLE AND WIND SPEED AT RR 0.28 Argyono Cahyono Adi; Alviani Hesthi Permata Ningtyas
Trends in Mechanical Engineering Research Vol 4, No 1 (2026): JUNE
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v4i1.41368

Abstract

This study aims to evaluate the aerodynamic characteristics of a Savonius-Darrieus hybrid wind turbine through a numerical simulation approach based on Computational Fluid Dynamics (CFD). Numerical analysis was carried out using ANSYS Fluent 2023 R1 software to examine the effect of changing the coupling angle by 0˚, 30˚, and 60˚ at wind speeds of 2.5 m/s and 3.5 m/s. Turbine performance evaluation was also carried out at several Tip Speed Ratio (TSR) values, namely 0.81; 1.3; and 2. The parameters observed in this study include the power coefficient (Cp), moment coefficient (Cm), torque characteristics, turbine output power, and efficiency. The results showed that the coupling angle configuration has a significant effect on the aerodynamic behavior and energy conversion capability of the hybrid turbine. Of all tested configurations, the highest Cp value of 0.042 and turbine efficiency of 4.2% were obtained at a wind speed of 3.5 m/s with coupling angles of 30° and 60° at a TSR of 1.3, resulting in an output power of 0.441 W. In addition, the turbine exhibited stable rotational characteristics and improved self-starting capability at low wind speeds. These findings indicate that the Savonius–Darrieus hybrid turbine has promising potential for small-scale renewable energy applications, particularly in low to moderate wind speed environments commonly found in urban and coastal areas. This study also confirmed that the hybrid configuration is able to improve the stability and overall performance of the turbine compared to a conventional vertical axis turbine operating under similar environmental conditions.
BEARING FAILURE ANALYSIS ON VIBRATING SCREEN EXCITER BASED ON EXPLICIT LUBRICATION PARAMETER CALCULATION AND MODIFIED BEARING LIFE: AN INDUSTRIAL CASE STUDY Sayid Bahri Sriwijaya; Mohamad Haifan; Tb. Ade Rahmatullah
Trends in Mechanical Engineering Research Vol 4, No 1 (2026): JUNE
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v4i1.41310

Abstract

This study investigates repeated failures of a spherical roller bearing type 22330 (MTBF = 23 months) on a vibrating screen exciter at a sinter plant through tribological root cause analysis, explicit EHL film-thickness calculation, and ISO 281:2007 life estimation. Why-Why Analysis identified inadequate lubricant viscosity as the principal failure driver. An explicit Dowson–Higginson line-contact EHL calculation, cross-validated against the SKF diagram method (deviation 6–10%), showed that ISO VG 100 yields κ = 3.08 and λ = 1.7–1.9 (mixed-lubrication regime), while ISO VG 220 raises these to κ = 6.13 and λ = 2.5–3.2 (full-film EHL regime). Sensitivity analysis confirms the VG 220 classification is robust across composite roughness σ* = 0.40–0.65 μm. The gap between the actual MTBF (23 months) and the nominal L₁₀a under VG 100 (≈74 months, with equivalent load P = Fr + Y₁·Fa per the spherical-roller-bearing catalogue provisions) suggests additional limiting factors, likely particle contamination or intermittent shock loading, which warrant further investigation. Per ISO 281:2007, upgrading to VG 220 is estimated to increase L₁₀a from ≈59–89 to ≈158–237 months, with a benefit-to-cost ratio exceeding 15:1. Findings support lubricant viscosity optimization as a low-cost reliability intervention; generalization to other installations requires independent validation.
EFFECT OF MULTI-PASS WELDING ON BEAD GEOMETRY AND HSLA STEEL SURFACE DEFECTS Maulana Banurea; Maulana Pratama
Trends in Mechanical Engineering Research Vol 4, No 1 (2026): JUNE
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v4i1.40805

Abstract

This study explores the impact of the variation in the number of passes in the multi-pass welding process on the shape of the weld bead and the damage to the surface of High Strength Low Alloy (HSLA) steel with a thickness of 8 mm through the arc welding method. The tested welding process includes 1 pass, 2 pass, and 3 passes while maintaining similar welding parameters. The findings of this study indicate that the number of passes has a significant effect on the quality of weld joints. Welding with 1 pass results in alexistoto suboptimal filling, coupled with undercut defects and incomplete fusion. In contrast, 2-pass welding shows the best results with symmetrical bead shapes and very minimal surface damage. However, the application of 3 passes results in an increase in incoming heat, which has an impact on the widening of the beads as well as the appearance of overlap and porosity defects. Therefore, the use of 2 passes is recommended as the most superior option for welding HSLA steel with a thickness of 8 mm.
CONTENT OF TIMER 2026;04(01) TiMER TiMER
Trends in Mechanical Engineering Research Vol 4, No 1 (2026): JUNE
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v4i1.42527

Abstract

CONTENT OF TIMER 2026;04(01)
CHARACTERIZATION OF THE MECHANICAL PROPERTIES OF MACHETE THOUGHT TO BE FROM THE PAJAJARAN ERA Muhammad Hiban Akmal Johan; Haryadi Haryadi; Sidik Susilo; Hery Tri Waloyo; Ipick Setiawan
Trends in Mechanical Engineering Research Vol 3, No 2 (2025): December
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v3i2.37156

Abstract

This study investigates the dugemslot mechanical properties of a Pajajaran-era golok to reveal the traditional metallurgical technology and cultural values embedded within it. The main issue addressed is the absence of scientific data regarding the manufacturing process and mechanical properties of ancient golok, thus this research aims to identify both aspects. The methodology involved Vickers hardness testing and metallographic analysis using an optical microscope, preceded by geometric measurements and specimen preparation through grinding, polishing, etching. The results indicate a graded mechanical property along the blade, with an average hardness of 184.01 HV: 150.13 HV at the upper section, 189.5 HV at the middle, and 212.4 HV at the lower section. Microstructural observations revealed a dominance of ferrite in the upper section, a combination of ferrite and pearlite in the middle, and a dense pearlite structure in the lower section. These findings suggest that the golok was manufactured using a casting technique combined with differential heat treatment, producing graded mechanical properties: ductile at the spine, balanced at the middle, and hard at the cutting edge. This research contributes to a deeper understanding of traditional metallurgical technology in Nusantara and serves as a reference for further studies as well as cultural preservation through scientific approaches.
DESIGN OF AN INTERNET OF THINGS (IoT) ON A SINGLE SLOPE SOLAR STILL MONITORING SYSTEM USING A FINITE STATE MACHINE (FSM) Dea Nurul Khumairoh; Eko Budiraharjo; Sunardi Sunardi; Agus Wibowo; Irfan Santosa
Trends in Mechanical Engineering Research 2026: ARTICLE IN PRESS
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v4i2.41949

Abstract

In addition to distilled water productivity, the single-slope solar still (S4) faces issues with temperature and solar intensity measurement devices, which are relatively expensive. Therefore, this study aims to design and implement an Internet of Things (IoT)-based S4 monitoring system using an ESP32 microcontroller so that distillation parameters can be monitored automatically and in real time. Sensor data is displayed on an LCD and transmitted to the Blynk app for real-time monitoring. The Finite State Machine (FSM) method is used to control the LCD, while non-blocking scheduling is applied for periodic data acquisition. Test results show that the system functions properly and that the DS18B20 sensor provides accurate measurements. The developed system serves as an effective solution for real-time monitoring of temperature and solar intensity parameters in the S4 Still.

Page 5 of 5 | Total Record : 49

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