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METALOGRAM
Published by Universitas Riau Kepulauan Batam
ISSN : -     EISSN : 30902460     DOI : https://doi.org/10.33373/mtlg.v2i1
Core Subject : Engineering,
Aerospace Engineering Automotive Engineering Control & Systems Engineering Engineering Industrial & Manufacturing Engineering
Metalogram is published by Program Studi Teknik Mesin, Fakultas Teknik, Universitas Riau Kepulauan, Batam, Indonesia. Metalogram is an open-access peer reviewed journal that mediates the dissemination of academicians, researchers, and practitioners in mechanical engineering. Metalogram accepts submission from all over the world. Metalogram aims to provide a forum for national and international academicians, researchers and practitioners on mechanical engineering to publish the original articles. All accepted articles will be published and will be freely available to all readers with worldwide visibility and coverage. The scope of Metalogram is in engineering such as design, energy conversion, manufacture, and metallurgy, asset management engineering.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 20 Documents
 1   2 
Analysis of Production Process Time Based on The Level of Hardness in The Production Material arifin, yahya alhafiizh
METALOGRAM Metalogram Vol.01 No.02 (April,2025)
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/mtlg.v2i1.7445

Abstract

Analyzing production process time is a key strategy to enhance efficiency and productivity in manufacturing. This study investigates the relationship between material hardness and processing time across stages like cutting, forming, and finishing. Various materials, including low-carbon steel, high-carbon steel, and alloys, were tested under identical operational conditions. Material hardness was measured using Rockwell and Brinell tests, while production time was recorded for each stage. Results show that higher material hardness leads to longer process times, especially during cutting and forming, due to increased resistance and tool friction. Softer materials, though faster to process, are more prone to deformation. These findings offer valuable insights for manufacturers in selecting materials that balance mechanical properties and efficiency, helping reduce production time, boost productivity, and lower costs without compromising product quality.
Analysis Of The Effect Of Primary Pully Inclination Angle On The Torque Of The 115 CC Mio Sporty Motorcycle Engine Lyan Syaputra, Muhammad
METALOGRAM Metalogram Vol.01 No.01 (December, 2024)
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/mtlg.v1i1.7180

Abstract

This test was conducted to determine the comparison of torque on a 115 cc motorcycle, Standard with different pully degree variations, 14 °, 13.5 °, 13 °, 12 °. With the maximum speed in each different pully test, at the 14 ° degree pully the resulting torque is averaged 6.35 with Rpm 6,637 (The trotle opening is maximum), In the 2nd test using Pully 13.5 ° testing was carried out with Rpm at 5. 900 - 5,980 (Maximum trotle gas opening) produced a torque of 6.47 which is greater than the test using the previous 14 ° pully, but the maximum Rpm produced by the pully with a degree of 13.5 ° mala is slower than testing using a 14 ° pully. From this test, we can see the difference. That using Pully 13.5° the torque is greater but the engine rotation is slower. The 3rd test using a 13 ° pully with a maximum Rpm at 6,500 - 6,700 (maximum trotle opening) produces a torque of 6.29, from this test it can be seen the difference in torque and Rpm produced by a 13.5 ° degree pully with a 13 ° degree pully, where the Rpm is 720 Rpm faster with a difference in torque at a lower rate of 0.18 Nm isbanding diangaka difference with a 13.5 ° degree pully. The 4th test using a 12° pully with a maximum Rpm at 7,140 - 7,190 Rpm (Maximum Gas Trotle Opening) produced a torque of 6.02. From this test, it can be seen the difference with the test using a 13° pully, where the Rpm produced is higher but the torque is smaller, the torque difference is 0.27.
Application Of Fcaw Welding Techniques In Supply Boat Manufacturing At Pt Vallianz Putra, Arvian Enggal; Hasibuan, Fardin
METALOGRAM Metalogram Vol.01 No.03 (August,2025)
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/mtlg.v1i03.8160

Abstract

FCAW is a semi-automatic welding method that offers advantages in welding speed, weld quality, and flexibility in various welding positions. The process begins with equipment preparation, selecting welding parameters according to the Welding Procedure Specification (WPS) standard, and then carrying out welding using root pass, fill pass, and cap pass techniques. Evaluation of welding results is carried out through visual inspection and non-destructive testing (NDT), such as Magnetic Particle Inspection (MPI) and Ultrasonic Thickness Testing (UT) to ensure the quality and integrity of the joint. The results show that the FCAW method is highly effective in supply boat fabrication, especially when supported by good work procedures, adequate operator skills, and strict quality control. This research is expected to provide a practical overview and serve as a reference for students and industry in implementing welding technology in the shipping sector.
Natural Frequency of Buildings and Resonance Phenomenon: Impacts on Structural Design kurni, yahya kurniawan; Sitorus, Hivaldo Ricky; Suwarno, Muhammad Edy; Ratu, Jumiati Ratutoli
METALOGRAM Metalogram Vol.01 No.03 (August,2025)
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/mtlg.v1i03.7806

Abstract

This piece explores the inherent frequency of buildings and the associated resonance effect, emphasizing their crucial roles in structural engineering. Grasping the natural frequency is vital for forecasting how structures react to dynamic forces such as earthquakes and strong winds. The research underscores the need to take into account the height and weight of buildings, as these elements affect their natural frequency and subsequently influence their performance during seismic activities. Through both theoretical insights and real-world instances including the Mexico City earthquake of 1985 and a building collapse the article illustrates the dangers posed by resonance when a structure's natural frequency coincides with external vibration frequencies. A particular case study is highlighted to demonstrate superior structural and aerodynamic design approaches aimed at reducing resonance due to seismic and wind effects. This study aspires to act as a guide for engineers and architects in recognizing and tackling resonance-related issues to improve the safety and durability of tall buildings.
Performance Analysis Of Standart Camshaft Engines And Modified Camshafts On 110cc Motorcycles Derrio, Muhammad; Sihombing, Aser Eben Ezer; Ratuloli, Jumiati; Hasibuan, Fardin
METALOGRAM Metalogram Vol.01 No.03 (August,2025)
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/mtlg.v1i03.7454

Abstract

Currently, motorcycles are the maximum extensively used approach of transportation in Indonesia. apart from being a way of transportation and for delivering items, of direction, it has unique settings from motorbikes which might be used for daily purposes via making overall performance upgrades by using modifying the noken axle (camshaft) on motorbikes which are used each day. The characteristic of the camshaft is to manipulate the valve opening, both the consumption and exhaust valves at the time decided with the aid of the four stroke engine cycle. at the changed engine, numerous adjustments have been made to several systems and components to improve the performance of the bike. The cause of this take a look at become to determine the performance of the Honda Absolute revo 110cc combustion engine which incorporates torque, strength and gasoline intake with the aid of comparing the standard camshaft and The changed camshaft which has modified the lift top by using 1mm has changed in the absolute revo 110cc engine, adjustments occur amongst them in torque, energy and greater gasoline intake enter the combustion chamber. The studies was received from a tool which can decide power called Dynotest. Dynotest serves to measure the torque strength of a motorcycle that has been modified by means of camsaft so as to understand better which is the modified camasafth and the usual camsafth on a 110cc revo absolute motorcycle.
Multi-Function Press Machine Pressing, Angle Bending, And Radius Bending Muhammad umar, Umar Umar; Hanif, Faizin Muhammad; Fernando, Wahyu Wahyu; Hasibuan, Fardin Fardin
METALOGRAM Metalogram Vol.01 No.03 (August,2025)
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/mtlg.v1i03.7458

Abstract

The multifunctional press machine is an innovation designed to support metal fabrication processes with three main capabilities: pressing, angle bending, and radius bending. This machine can be used for steel plates with a thickness of 15 mm and a width of up to 800 mm, equipped with a hydraulic system to produce precise and stable pressure. The design process includes the design of main components, material selection, and performance testing to ensure optimal results. This machine aims to improve production efficiency, reduce waste, and produce high-quality products that meet the needs of education and industry, particularly at the University of Riau Kepulauan. Testing showed that the machine is capable of producing angle and radius formations with high accuracy. Its applications cover the automotive, manufacturing, and construction sectors, making it a multifunctional tool relevant for education, research, and small to medium-scale production.
Experimental Analysis of Resonance Behavior in a Mechanical Vibrating Beam Rizki, Muhammad Fachri; Yondra, Asraf Aulia; Yusuf, Mohammad Syaifullah; Sihotang, Angles; Hasibuan, Fardin
METALOGRAM Metalogram Vol.01 No.03 (August,2025)
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/mtlg.v1i03.7857

Abstract

This paper presents an experimental analysis of resonance behavior in a mechanical vibrating beam. A cantilever beam made of aluminum was subjected to forced vibrations using a shaker, and the frequency response was measured with an accelerometer. Resonance frequencies for the first three modes were determined and compared with theoretical predictions based on Euler-Bernoulli beam theory. The experimental results showed excellent agreement with theoretical values, with errors less than 1%, validating the approach. This study underscores the importance of understanding resonance in mechanical structures to prevent failures due to excessive vibrations.
The Effect of Imbalance On Rotor Vibration in Electric Motors Albaru, Agung; Balqis, Dinda; Afriandi, Irvan; Syaputra, Muhammad Lyan
METALOGRAM Metalogram Vol.01 No.03 (August,2025)
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/mtlg.v1i03.7979

Abstract

Mechanical system failures in electric motors are often caused by mass imbalance in the rotor. This imbalance occurs when the mass distribution is uneven relative to the axis of rotation, causing the center of mass to deviate from the rotational axis. Such conditions generate centrifugal forces that lead to excessive vibrations, accelerate component wear, reduce efficiency, and shorten the motor’s lifespan. Mass imbalance in the rotor system is one of the main causes of excessive vibration in rotating machines, which can result in performance degradation, component wear, and even catastrophic failure. This study aims to analyze the vibration characteristics caused by unbalance in a single rotor and evaluate the effectiveness of the trial weight balancing method (three-test-mass method) in reducing the resulting vibrations. Experimental testing was conducted using a Digital Signal Analyzer (DSA), an accelerometer sensor, and a rotor test system with various unbalanced mass configurations installed on the rotor disk. Vibration data were analyzed in both time and frequency domains using the Fast Fourier Transform (FFT) to identify dominant frequencies due to unbalance. The results show that the highest vibration amplitude occurs at the fundamental frequency corresponding to the rotor’s rotational speed. The three-test-mass balancing method proved effective in significantly reducing the vibration amplitude after mass correction. These findings indicate that identifying unbalance through vibration response and applying an appropriate balancing method can improve the stability and reliability of rotating rotor systems, including both three-phase induction motors and universal motors such as electric drills.
Toughness and Structural Analysis of Welds and HAZ of Sumerged Arc Welding on SM 490 Steel Sianipar, Stiven Ewin; hasibuan, fardin; Syaputra, Muhammad Lyan
METALOGRAM Metalogram Vol.01 No.03 (August,2025)
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/mtlg.v1i03.8144

Abstract

The welding process is a metal joining method that utilizes high heat energy, which can trigger changes in the microstructure, deformation, and the emergence of residual stress in the area around the joint. This study aims to examine the impact of variations in heat input in the Submerged Arc Welding (SAW) process on the microstructure and toughness of SM 490 steel, especially in the weld area and heat-affected zone (HAZ). The SAW method was chosen because it has high efficiency, is easy to automate, and is able to produce good quality joints. This study used three levels of heat input, namely 2.1 kJ/mm, 3.16 kJ/mm, and 4.3 kJ/mm. Based on the test results, increasing heat input causes slower cooling, which affects the formation of microstructures such as ferrite at the grain boundary, acicular ferrite, Widmanstätten ferrite, bainite, and martensite. Acicular ferrite with fine size and interlocking pattern is known to contribute to increasing the toughness of welded joints. The maximum toughness in the weld zone, amounting to 117 Joules, was achieved at a heat input of 3.16 kJ/mm with a test temperature of 0°C. Meanwhile, the best toughness value in the HAZ of 17.5 Joules was recorded at a heat input of 2.1 kJ/mm at a temperature of -20°C. The results of this study confirm that appropriate heat input settings are very important to obtain optimal microstructure and toughness in welding SM 490 steel using the SAW method
Effectiveness Analysis Of Centrifugal Pump Maintenance System For Performance Optimization At Pt. Sumber Air Abadi pratama, yuki alvandi; Manullang, Togu Juliaman; Wibisono, Muhammad Umar; Ditoswar, Arya Mahadika; hasibuan, Fardin
METALOGRAM Metalogram Vol.01 No.03 (August,2025)
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/mtlg.v1i03.7971

Abstract

This paper analyzes the centrifugal pump maintenance system and its impact on the effectiveness of pump performance at Perusahaan Sumber Air Abadi. The study identifies current maintenance practices, evaluates their effectiveness in preventing failures and optimizing pump operation, and proposes improvements for better system reliability and efficiency. Data were collected from maintenance records, pump performance, and personnel interviews. The findings indicate key areas for improvement in preventive maintenance scheduling, spare parts management, and personnel training. Implementation of these recommendations is expected to improve pump performance, reduce downtime, and contribute to the company's overall operational efficiency. The main focus is on the transition to a proactive maintenance culture through technology adoption and continuous skills development.

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