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Journal : METALOGRAM

Experimental Study of Mechanical Vibrations in Vehicle Suspension Systems Khoeriyah, Nafisatul Khoeriyah; barimbing, Ivan mangisara; Andreas silalahi, Jhon Nico; Saputra, Ariel; Hasibuan, Fardin; Irsyam, Muhammad
METALOGRAM Metalogram Vol.02 No.01 (December,2025)
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/mtlg.v2i1.7809

Abstract

This study reviews and analyzes vertical vibrations in the suspension system of passenger vehicles, focusing on the McPherson strut configuration. By synthesizing findings from previous experimental research employing vibration test benches like the UKA-3.5E, the dynamic response of suspensions under varying frequencies and tire inflation pressures is examined. Results indicate that tire pressure significantly influences vibration amplitude and duration, aligning with theories that model tire stiffness as a parallel spring element affecting overall suspension dynamics. The analysis also highlights the effectiveness of multi-sensor approaches, including proximity sensors and load cells, in capturing real-time vibrational behavior. Understanding these relationships is vital for optimizing suspension performance and developing strategies to reduce vibrations, thereby improving vehicle stability, occupant comfort, and safety.
Analysis of Wind Energy Potential and Technical Evaluation of a Small-Scale Wind Turbine for Electricity Generation in Batam, Indonesia Hasibuan ST.MT, Fardin; syaputra, Muhammad Lyan; irsyam, Muhammad; faturahman, noval; kuniawan, Muhammad iman
METALOGRAM Metalogram Vol.02 No.01 (December,2025)
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/mtlg.v2i1.8692

Abstract

Wind energy represents one of Indonesia’s most promising renewable energy resources, with a national potential estimated at approximately 60 GW. However, its implementation remains limited due to insufficient site-specific assessments and feasibility studies. This research analyzes the wind energy potential at Galang District Beach, Batam City, and evaluates the technical suitability of the Sky Dancer 500 (TSD 500) wind turbine equipped with inversed-taper blades for small-scale electricity generation. A descriptive quantitative method was employed using secondary wind speed data from NASA (2014–2018) and primary measurements collected continuously for 30 days. Results show that Galang District Beach, Batam City exhibits average wind speeds ranging from 4 to 13.41 m/s, with a maximum recorded speed of 13.41 m/s. Based on technical analysis, low-speed wind characteristics align well with the operational profile of a horizontal-axis wind turbine utilizing inversed-taper blades. Estimations indicate that the TSD 500 turbine can generate 390–500 Wh of electricity per day under the observed wind conditions. These findings demonstrate that the site possesses adequate potential for micro-scale wind power development, and deploying ten units of the TSD 500 turbine could supply daily electrical needs for approximately ten households. The study contributes to the growing body of literature on decentralized renewable energy solutions for remote and coastal communities in Indonesia..
Thermal Optimization of Aluminium Fishing Sinker Mold Using Cooling Channel Design Arifin, Yahya Hafiizh; Putra, Akhri Ramadhan; hasibuan, fardin; Irsyam, Muhammad
METALOGRAM Metalogram Vol.2 No.2 (April, 2026)
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/mtlg.v2i2.8849

Abstract

Thermal performance of mold plays a critical role in determining the quality and productivity of aluminium casting products, including fishing sinkers. Improper temperature distribution within the mold can lead to casting defects, uneven solidification, and extended cooling time. This study focuses on the thermal optimization of an aluminium fishing sinker mold through the design and improvement of cooling channel configurations. Numerical simulations based on heat transfer analysis are conducted to evaluate temperature distribution, cooling efficiency, and solidification behavior within the mold. Several cooling channel designs are analyzed and compared to identify the most effective configuration for achieving uniform temperature distribution and enhanced heat dissipation. The results show that optimized cooling channel design significantly reduces temperature gradients, shortens cooling time, and improves overall casting quality. This study demonstrates that thermal optimization through proper cooling channel design is an effective approach to enhancing the performance and reliability of aluminium fishing sinker molds.
Effect of CO₂ and Argon Gas Shielding on GMAW Welding Joint Quality Ma'asya, Safira; Alfharizi, Muhammad; Manullang, Togu Julianman; Tawaris, Andrean Bastian; Hasibuan, Fardin; Irsyam, Muhammad
METALOGRAM Metalogram Vol.2 No.2 (April, 2026)
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/mtlg.v2i2.7866

Abstract

This study aims to evaluate the effect of shielding gas types, namely carbon dioxide (CO₂) and argon, on the quality of welded joints in the Gas Metal Arc Welding (GMAW) process with low carbon steel as the base material. The research method was carried out experimentally using a steel plate measuring 150 mm × 75 mm × 6 mm and an ER70S-6 electrode wire with a diameter of 1.0 mm. The welding process was carried out with an inverter-type GMAW machine using fixed parameters: 120 ampere current, 22 volt voltage, 4 mm/s welding speed, 12 mm stick-out distance, and 15 liters per minute shielding gas flow rate. The specimens were divided into two groups based on the shielding gas, namely pure CO₂ and pure argon. Evaluation of the joint quality was carried out through tensile tests, Vickers hardness tests on three main zones (weld metal, heat affected zone, and base metal), as well as microstructure and visual observations. The results showed that the specimens with argon gas had a higher average tensile strength (460 MPa) than CO₂ (420 MPa). The hardness values were also higher and more even in the argon specimens, with a finer and more uniform microstructure. In conclusion, the use of argon produces welds with better mechanical and metallurgical qualities than CO₂. Therefore, argon is more recommended for welding low carbon steels that require high strength and precision.