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Jurnal Teknik Mesin
Published by Institut Teknologi Padang
ISSN : 20894880     EISSN : 25988263     DOI : -
Core Subject : Engineering,
Mechanical Engineering
Jurnal Teknik Mesin (JTM) is a journal aims to be a peer-reviewed platform and an authoritative source of information. We publish original research papers, review articles and case studies focused on mechanical engineering and other related topics. All papers are peer-reviewed by at least two referees. JTM is managed to be issued twice in every volume (April and October).
Arjuna Subject : -
Articles 158 Documents
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Surface Roughness Analysis in Turning of AISI 1045 Steel with Anova and Scheffe Test Am Mufarrih; Hesti Istiqlaliyah; Mohammad Zaenal Fanani
Jurnal Teknik Mesin (JTM) Vol 8, No 2 (2018)
Publisher : LP2M - Institut Teknologi Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (459.084 KB)

Abstract

Turning process is a very important machining process in the manufacturing industry. The quality characteristics of a turning machining product can be seen from the level of surface roughness carried out in the turning process. The purpose of this study was to determine the effect of spindle speed, feeding and the main cutting angle on surface roughness. Surface roughness measurement using a surftest SJ-301. The material used in this study is AISI 1045 steel. While analysis of variance (ANOVA) is used to process data. The results showed that the lowest surface roughness can be achieved at spindle speed of 765 rpm, feeding of 0.15 mm / rev and main cutting angle of 85. Data analysis explained that the spindle speed, feeding and main cutting angle had a significant effect on surface roughness. Increased spindle speed, feeding and main cutting angle will reduce surface roughness. The scheffe test results also show contrasting results between the variables studied.
Flexural Free Vibration of a Straight Vertical Cantilever Beam Asmara Yanto
Jurnal Teknik Mesin (JTM) Vol 8, No 1 (2018)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

In this paper, flexural free vibrations of a straight vertical cantilever beam have been modeled and simulated. Here, a modeled cantilever beam has modulus of elasticity, moment of inertia, cross-section and density are constant. Motion equation of a modeled cantilever beam are separated become two Partial Differential Equations; one depends on position and another on time. This technique yields the motion equation of a modeled cantilever beam contains two functions; one defines deflection shapes and another defines amplitude of vibrations within time. The deflection shapes are described for first five natural frequencies of a modeled cantilever beam. Furthermore, the motion equation of a modeled cantilever beam is solved by using Fourier series. From simulation of a modeled cantilever beam with 2 GPa modulus of elasticity, 2.67x10-8 m4 moment of inertia, 8x10-4 m2 cross-section, 7862.30 kg/m3 density, 1 m length, and 100 N initial load obtained 16.29, 102.11, 285.95, 560.36, and 926.22 rad/s first five natural frequencies respectively.
Flying Time Of Quadcopter Based On Green Composites Material Mastariyanto Perdana; Nurzal Nurzal; Syahrul Firdaus; Rozi Saferi
Jurnal Teknik Mesin (JTM) Vol 8, No 2 (2018)
Publisher : LP2M - Institut Teknologi Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (341.798 KB)

Abstract

Application of green composites material is aerial egineering. Advantages of green composites material are lightweight and relatively strong. This reason that makes green composites can be applied in Unmanned Aerial Vehicle (UAV). In this study, material of quadcopter frame was composites material that made of waste material from styrofoam, bagasse and eggshell. Styrofoam was used as binder of composite material. Bagasse and eggshell was used as reinforcement in green composite material. The investigation focused on effect of volume fraction on flying time of quadcopter that made of green composites material. This study showed that addition of eggshell powder in composites up 25% by volume fraction, result in decreasing the flying time of quadcopter. Addition of eggshell powder in composites up 25% by volume fraction,  result in decreasing the porous of green composite. Porous structure affect the flying time of quadcopter based on green composite materials that made of waste material from styrofoam, bagasse and eggshell. Green composite based on styrofoam, bagasse and eggshell can be applied in Unmanned Aerial Vehicle (UAV) materials.
Effect of Point Angle on Delamination in Drilling of KFRP Composite Mohammad Muslimin Ilham; Am Mufarrih
Jurnal Teknik Mesin (JTM) Vol 8, No 2 (2018)
Publisher : LP2M - Institut Teknologi Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (958.223 KB)

Abstract

Drilling is the most important machining process in the automotive and manufacturing industries. The performance of drilling KFRP composite materials can be measured by quality characteristics such as surface roughness, burr height, roundness, power consumption, thrust force and delamination. This study aims to determine the effect of process variable variation to delamination response. The experimental is held with three replication. The variations of drilling process variable is point angle (90°, 100°, 110°, 118°, 130° and 140°). The response variables observed is delamination. The cutting tool used is the twist drill HSS Nachi. One Way ANOVA is used to determine the process variables that have a significant influence on the observed response variables. The results showed that the point angle had a significant effect on response of delamination. Increasing the point angle will increase the delamination.
Mini Review: Potential of Scrap Tires for Useful Material and Products Muhammad Latifur Rochman; Muji Setiyo
Jurnal Teknik Mesin (JTM) Vol 9, No 1 (2019)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

One of the effects of increasing the number of vehicles is the presence of scrap tires. Stacking and burial of used tires have caused serious problems for the environment. Therefore, this article presents a brief review of the potential of scrap tires to be useful materials and products. Of the many potential uses, we find at least three ways to use the scrap tires, which are: converted to rubber powder to be reprocessed as asphalt mixture, concrete mixtures, composite mixes, fillers, and the like; converted to liquid oil through the pyrolysis process; and recycled forms, where the original physical properties of used tires are still visible, such as for furniture, wave breakers, racing circuit safety, and the like.
The Effect of Pressure and Temperature on The Particle Board Manufacture from Palm Oil Empty Bunches and Pine Bark Asfarizal Saad; Anwar Kasim; Gunawarman Gunawarman; Santosa Santosa
Jurnal Teknik Mesin (JTM) Vol 9, No 1 (2019)
Publisher : LP2M - Institut Teknologi Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (295.45 KB)

Abstract

The manufacture of particle boards without synthetic adhesives is influenced by the composition of the material, temperature, time, pressure, particle size and method of manufacture. The pressure of one important parameter and its variations often produce different properties. Pine skin is a waste that is not valuable and just wasted. Making particle boards from palm oil empty bunches and pine bark waste is an interesting and new thing. Pinus merkusii leather powder is used as an added ingredient, its composition is 70% tkks and 30% pine merkusii powder with 5-6% moisture content, dry based. The fiber lengths are 0.1-2.0 cm and pressures are 2, 4, 6, 8 and 10 kg.cm-2, temperature 150, 160, 170, 180 and 190ºC. The standard for particle board reference and bending test is SNI 03-2105-2006 and ASTM D1037. The result show of working pressure and heating temperature affect the density, moisture content and MOR. Increasing pressure and temperature tend to increase the MOR value and increase in temperature above 190oC, the MOR value decreases.
Kinematic Analysis of A 4-Axis Manipulator Design with 2-Axis Gripper Asmara Yanto; Rozi Saferi; Anrinal Anrinal; Fikri Azhar
Jurnal Teknik Mesin (JTM) Vol 9, No 1 (2019)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

The purpose of this work is to analyze the kinematic of a manipulator that was designed to has four revolute movements (R1, R2, R3 and R4) and is equipped with a gripper that has one revolute movement (R) and one prismatic movement (P). The analysis was conducted by varying R1, R2, R3 and R4 of manipulator and R and P of gripper. Kinematic analysis was carried out using the Forward Kinematics method based on DH-Parameters of manipulator and gripper. Manipulator was designed to be consist of 120 mm of Link-1, 200 mm of Link-2, 250 mm of Link-3 and 250 mm of Link-4. Revolute movements range of manipulator was designed for variation of R1, R2, R3 and R4, and with movements range of gripper for variation of R and P. From this work can be concluded that manipulator has 228.5 mm of minimum range radius of end-effector and 547.0 mm of maximum range radius of end-effector.
The Effect of Electrode Angle in Forward Welding Thechnique On Fusion Depth Hafni Hafni; Rifqi Rifqi
Jurnal Teknik Mesin (JTM) Vol 9, No 1 (2019)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

Shielded metal arc welding (SMAW) or manual metal arc welding (MMAW) is included in a group of fusion welding that uses heat generated by a jump in electric ions that occur between the cathode and anode (the tip of the electrode and the surface of the base metal), thus melting together. During the melting process between the electrode and the base metal is protected by a protective gas that comes from the flux of electrodes which fuses during the welding process, then in the process of freezing the flux floats above the weld metal turns into slag, this slag serves to hold the cooling rate on the metal weld. Penetration (fusion depth) of weld metal on base metal is greatly influenced by heat input. This heat input is also influenced by the welding technique and the electrode angle. In this research, advanced welding techniques are used, namely smelting occurs in front of the electrode and the electrode angle is 70°, 75°, 80o, 85o and 90°. the base metal used is low carbon steel ST 37, the electrode used is the AWS E 6013 electrode with a diameter of 3.2 mm with a current of 85 amperes, a voltage of 30 volts. Welding speed 2.49 mm /s. From the results of a macro photo, it can be seen that the electrode angle greatly affects the width and depth of penetration, where at the angle of the 900 electrode it has penetration: 88 µm wide and 6.6 µm depth.
Track Record and Research Challenges of Automotive Vocational Lecturer in Indonesia: Screening from Google Scholar 2016-2018 Bagiyo Condro Purnomo; Muhammad Latifur Rochman; Muji Setiyo
Jurnal Teknik Mesin (JTM) Vol 9, No 1 (2019)
Publisher : LP2M - Institut Teknologi Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (377.522 KB)

Abstract

This article presents a research review of automotive vocational lecturers in Indonesia obtained from Google Scholar during 2016-2018. We found more than 500 articles on Google Scholar produced by 277 lecturers from automotive vocational programs. However, through data filtering, there are only 208 publications related to automotive, including the development of learning media in VHE. Looking at the world automotive research trend (which leads to major issues regarding battery systems, downsizing and turbocharging, and advanced combustion modes), and with concerns about the availability of fossil energy, major and fundamental reforms are needed for research activities in automotive vocational lecturers in Indonesia, both in terms of topic and depth of research material. As a recommendation, stakeholders in automotive vocational programs in universities should immediately form a research roadmap together and form a national automotive research consortium in order to contribute in realizing environmentally friendly vehicle technology and a sustainable national transportation system.
Position Optimization of SDVA Mass (1/20 System Mass) to Reduce Translation and Rotation Vibration on Beam Susastro Suharto
Jurnal Teknik Mesin (JTM) Vol 7, No 1 (2017)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

In many cases, amount of SDVA mass  (single dynamic vibration absorber) which is used to dampen vibrations is equal to 1/10 of the mass of the system. Meanwhile, the amount of additional mass is sometimes felt to be too great if the mass system  is also great. To resolve this  problem, we use mass absorber with a much smaller size. In this research, we did a simulation optimization of the use massa SDVA 1/20 on the beam, to damped translation and rotation vibration from main system. The study began by building a 2 DOF vibration prototype system with the addition of SDVA. Prototype modeled into mathematical equations and simulated to determine the change vibration characteristics. In this simulation we provide changes in the excitation frequency and distance of the center of mass SDVA future main system. From this research indicated that the addition of SDVA capable of reducing vibration direction of translation by 98.53% that occurred at a frequency ratio of 1. Whereas for rotational motion, vibration reduction which occurred amounted to 80.41%. From the results of This research also concluded that translation and rotation vibration reduction are best obtained when the ratio of the arms by rl = 0,9 with 75,84 % vibration reduction.

Page 9 of 16 | Total Record : 158

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