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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 45 Documents
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CORROSION RATE ANALYSIS OF ALUMINIUM 5083 USING THE IMPRESSED CURRENT CATHODIC PROTECTION (ICCP) METHOD IN SEAWATER MEDIA Muhammad Faiz Salim; Nani Mulya Ningsih; Aditya Noor Setyo Hadi Darmo
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.v4i1.40740

Abstract

Korosi pada Aluminium 5083 di lingkungan air laut dapat menurunkan ketahanan material dan memperpendek umur pakai struktur. Penelitian ini bertujuan menganalisis pengaruh variasi tegangan metode Impressed Current Cathodic Protection (ICCP) terhadap laju korosi Aluminium 5083 pada media air laut. Variasi tegangan yang digunakan yaitu 1 volt, 2 volt, dan 3 volt dengan karbon grafit sebagai anoda. Pengujian dilakukan menggunakan metode polarisasi potensiodinamik dan Optical Emission Spectrometer (OES). Hasil penelitian menunjukkan bahwa laju korosi Aluminium 5083 tanpa proteksi sebesar 0,00108 mmpy dan meningkat menjadi 0,0104 mmpy pada 1 volt, 0,018 mmpy pada 2 volt, dan 0,054 mmpy pada 3 volt. Kadar krom (Cr) meningkat pada tegangan 1 volt menjadi 0,467%, namun menurun pada tegangan 2 volt dan 3 volt menjadi 0,207% dan 0,153%. Penurunan kadar krom menyebabkan meningkatnya unsur pengotor seperti Ni, Pb, Sn, dan Co yang memicu korosi lokal. Peningkatan laju korosi menunjukkan bahwa tegangan ICCP yang terlalu tinggi menyebabkan overprotection dan merusak lapisan pasif Al₂O₃ pada permukaan aluminium.
ANALYSIS RELAY PERFORMANCE IN MOTOR DC CONTROL FOR DISTANCE DETECTION OBJECT Riza Arif Pratama; Sahid Bayu Setiajit; Herdias Raffa Dearly; Sulcan Izul Zamharir
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.v4i1.40419

Abstract

DC motor control system needs to have consistent rotation settings so that safety indicators are more stable. Negligence in operation needs to be monitored to reduce incidents in nearest zone of DC motor installation. Research on relay response to distances below safe was carried out by examining three parameters, namely distance accuracy, relay response, and monitoring indicators with experimental testing. Results of study have produced a distance accuracy of 99.21% which indicates good human detection. The relay response in controlling DC motor has been able to work according to the zone that has been determined in Arduino programming. Monitoring indicators are in accordance with the LCD display and audible warnings by buzzer if humans enter in danger zone DC motor area. Determination of location of the active sensor is in accordance with installation area so that it can be monitored correctly.
ANALYSIS OF AIR-COOLED CONDENSER EFFECTIVENESS UNDER TROPICAL AMBIENT TEMPERATURE VARIATIONS IN LOW-ENTHALPY GEOTHERMAL SYSTEMS Richard Alexander; Agus Setyawan; Udi Harmoko
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.v4i1.40713

Abstract

The performance of Air-Cooled Condensers (ACC) in low-enthalpy geothermal systems is strongly influenced by ambient temperature as the primary cooling medium. This study analyzes the effect of tropical ambient temperature variations on ACC effectiveness using the effectiveness-NTU method and linear regression based on 1,415 operational data points. The results show that the calculated ACC effectiveness ranges from 49.93% to 64.46% within an ambient temperature range of 18.63°C to 29.56°C. Ambient temperature shows a very strong positive correlation with ACC effectiveness, with r = 0.9984 and R² = 0.9967. The increase in effectiveness at higher ambient temperatures is associated with a reduction in the theoretical maximum heat transfer rate (Qmax), rather than an improvement in actual cooling performance. The developed model can be used as a simple predictive tool for operational management of low-enthalpy geothermal systems in tropical regions.
STOCHASTIC MODELING OF BEARING FAILURE TIME USING THE WEIBULL DISTRIBUTION: A MONTE CARLO SIMULATION APPROACH Syarif Abdullah; Himmatul Mursyidah; Mekro Permana Pinem; Sri Istiyarti Uswatun Chasanah; Miftahul Huda; Fajri Ikhsan; Agung Satrio Wicaksono; Reka Pandu Anggara
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.v3i2.37059

Abstract

This paper introduces a hagoslot stochastic model to investigate the failure times of bearings based on a two-parameter Weibull distribution utilizing Monte Carlo simulation. The failure times were fitted based on maximum likelihood estimation, and the parameters showed that the wear-out failure type with an increasing hazard rate (β>1) was corresponding to the fatigue-induced breakdown phenomenon in the rolling bearings. A Monte Carlo simulation with 1000 runs was performed to quantify the uncertainty of lifetime predictions, which have presented relatively high spreads but stable central tendencies in the Weibull parameter estimates. Survival analysis and hazard function showed increasing probability of failure with time, indicative of the need for prognosis-based maintenance. The findings demonstrate that the Weibull model is a reliable and interpretable paradigm that can be used to describe the probabilistic nature of mechanical component failure. The presented modeling strategy is appropriate for both engineering purposes and simulation-based reliability analyses, possibly evolved into a mixture-Weibull representation or data-driven parameter estimation.
INFLUENCE OF STEAM-TO-BIOMASS RATIO ON SYNGAS YIELD AND COMPOSITION IN THE INDUCTION HEATING GASIFICATION OF MUNICIPAL SOLID WASTE Imron Rosyadi; Yusvardi Yusuf; Sunardi Sunardi; Shofiatul Ula; Dhimas Satria; Elang Daffa Setiadji
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.v4i1.40653

Abstract

This is This study explores the Influence of Steam-to-Biomass Ratio on Syngas Yield and Composition in the Induction Heating Gasification of Municipal Solid Waste (MSW). The aim was to investigate how varying the steam-to-biomass ratio (SBR) affects the yield and composition of syngas during MSW gasification using induction heating. The objectives were twofold: first, to determine the optimal SBR that maximizes hydrogen (H₂) produc-tion in syngas, and second, to analyze the impacts on other syngas compo-nents such as carbon monoxide (CO), carbon dioxide (CO₂), and methane (CH₄). Experimental tests were conducted using an updraft reactor with an induction heating system, maintaining a constant MSW feed rate while ad-justing SBR from 0.56 to 2.09. Gas chromatography was employed to ana-lyze syngas composition, focusing on H₂, CO, CO₂, and CH₄. Key findings indicate that increasing SBR enhances hydrogen production significantly. At an optimal SBR of 2.09, hydrogen content peaked at 36.203%, demonstrat-ing the efficacy of steam in promoting gasification efficiency. Concurrently, CO concentrations decreased with higher SBR values due to intensified wa-ter-gas shift reactions. The study also highlighted challenges related to by-product formation, particularly tar and char residues. Tar production peaked at 9.68 grams under low SBR conditions (0.56), emphasizing the critical role of precise steam control in minimizing tar contamination. Char formation averaged 4 grams across SBR variations, influenced by biomass characteris-tics and reactor cleanliness. These findings contribute to advancing sustaina-ble waste-to-energy practices by optimizing gasification parameters tailored to local MSW compositions. Future research should focus on refining gasifi-cation technologies and conducting comprehensive techno-economic as-sessments to evaluate scalability and cost-effectiveness in diverse environ-mental settings.
MANUFACTURE OF BODIES, BOOM AND BASE FRAME FOR MINI FLOOR CRANES WITH A LIFTING CAPACITY OF 2 TONS Antonius Adi Soetopo; Rani Nopriyanti; Ahmad Maulana Mustopa; Faiq Surya Ramadhani
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.v4i1.40777

Abstract

Operational efficiency in small and medium scale manufacturing industries and machine maintenance workshop heavily depends on the smooth flow of heavy material handling. The use of precise lifting equipment is crucial for ensuring workplace safety and production activities. However, in work areas where speace is limited or movement is restricted, the use of large lifting equipment is impractical scatter hitam and economically unfeasible. This study aims to design and build mini floor crane with a lifting capacity of 2 tons, focushing on the design and fabrication of the body, boom and base frame structures. The research method combines manual mathematical calculation to determine bending stress and deflection in the boom and base, which is then validated using Finite Element Analysis (FEA) to identify critical points in the structure. Productivity analysis demonstrates that the use lifting equipment is significantly more advantageous both technically and economically, with increased operational efficiency compored to methods.
COMPARATIVE EVALUATION OF SERIES–PARALLEL HYBRID ARCHITECTURES FOR GASOLINE COMPRESSION IGNITION HEAVY-DUTY VEHICLES Hery Tri Waloyo; Agus Mujianto
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.v3i2.36354

Abstract

The wede168 growing demand for sustainable propulsion in heavy-duty transport has intensified research on Gasoline Compression Ignition (GCI) engines integrated with hybrid powertrains. This review presents a comprehensive comparative evaluation of series–parallel hybrid architectures for GCI-powered heavy-duty vehicles, emphasizing energy efficiency, combustion stability, and emission performance. This study systematically analyzed publications from the SAE, IEEE, Elsevier, and Springer databases, published between 2015 and 2025, through a rigorous peer-reviewed selection framework. The results show that series–parallel configurations provide better power distribution between the GCI engine and the electric motor, achieving 8–15% higher fuel-to-wheel efficiency than conventional diesel hybrids. Thermal–energy coupling models improve heat management and combustion consistency, reducing NOx and particulate emissions by up to 45%. Additionally, the use of deep reinforcement learning (DRL) and model predictive control (MPC) enhances adaptive energy management under varying load conditions. However, challenges remain in maintaining combustion stability during transient operations and optimizing hybrid mode transitions. Overall, this review identifies the series–parallel GCI hybrid architecture as a promising intermediate technology bridging conventional diesel systems and future zero-emission solutions, particularly for long-haul and urban heavy-duty applications.
EFFECT OF FLUID VELOCITY ON THE THERMAL EFFICIENCY OF A SHELL AND TUBE HEAT EXCHANGER THROUGH A COMPUTATIONAL FLUID DYNAMIC (CFD) APPROACH Iksan Arif Munandar; Ryan Sadewo
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.v4i1.40543

Abstract

Heat exchanger efficiency is critical in industrial energy management. The relationship between fluid velocity and thermal performance in shell and tube heat exchangers (STHE) remains insufficiently quantified in an integrated ther-mo-hydraulic framework. This study investigates the effect of fluid velocity (0.5–2.5 m/s) on STHE thermal efficiency using Computational Fluid Dynamics (CFD) with the k-ω SST turbulence model, grounded in the Dittus-Boelter correlation, Darcy-Weisbach equation, and ε-NTU method. A three-dimensional geometry (shell diameter 380 mm, 104 tubes, 6 baffles) was simulated in ANSYS Fluent 2023 R1 using 1.8 million mesh elements, validated against the Bell-Delaware analytical method and experimental data from Sutoyo et al. (2024), with a maximum deviation of 6.3%. Results show that the overall heat transfer coeffi-cient increased sub-linearly from 1,245 to 2,087 W/m²· K, while pressure drop grew quadratically from 2,180 to 14,520 Pa. Thermal efficiency rose from 62.4% to 80.3% but exhibited saturation at higher velocities. The Performance Evalua-tion Criteria (PEC) peaked at 1.31 for v = 1.5 m/s, identifying this as the optimal operating condition with 76.5% thermal efficiency and manageable pressure losses. These findings confirm that v = 1.5 m/s represents the best thermo-hydraulic balance and provide practical guidance for energy-efficient STHE operation in industrial applications.
ENERGY-CONSCIOUS PRODUCTION SCHEDULING FOR FABRICATED METAL PRODUCTS: A MIXED-INTEGER PROGRAMMING APPROACH Bobby Kurniawan; Melina Melina; Yusraini Muharni
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.v4i1.40906

Abstract

Energy is a fundamental requirement in the metal fabrication industry. However, energy consumption is rarely taken into account in production scheduling decisions. In fact, a well-designed production schedule can contribute significantly to energy conservation. Therefore, production scheduling must explicitly consider energy consumption. This study proposes an energy-conscious production scheduling system for a fabricated metal products industry. The production system under study exhibits the characteristics of a hybrid flow shop, and thus the problem is modeled as a hybrid flow shop scheduling problem. To solve this problem, the mixed-integer programming (MIP) method is employed to solve the hybrid flow shop scheduling model. The results demonstrate an energy cost saving of 0.66% compared to the scheduling practice currently in use.
CONE NOZZLE ON VENTURY SCRUBBER TO REDUCE EMISSIONS OF PORTABLE INCINERATOR Agung Sudrajad; Mekro Permana Pinem; Ni Ketut Caturwati; Venida Alan Devara
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.v3i2.37108

Abstract

Suboptimal waste wede168 management in Indonesia has resulted in increased exhaust emissions from the incineration process. One solution to reduce these emissions is the use of ventury wet scrubber technology, which functions to capture harmful particles and gases with water flow. This study aims to determine the effect of using a cone nozzle on the ventury wet scrubber on reducing incinerator exhaust emissions. The method used was to compare two conditions: incinerator without scrubber and incinerator with scrubber equipped with four cone nozzles. Emission parameters measured include CO, CO₂, HC, and O₂ using a gas analyzer. The results show that the system with cone nozzles can reduce CO emissions by 80.60%, CO₂ by 70.56%, and HC by 73.81%, and increase O₂ levels by 23.43%. Although CO emissions still slightly exceed the emission standard threshold (733 mg/Nm³ compared to the standard 625 mg/Nm³), the reduction achieved is very significant at 80.60%. Thus, the use of a cone nozzle on the ventury wet scrubber proved effective in reducing incinerator flue gas emissions.

Page 4 of 5 | Total Record : 45

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