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Jurnal Teknik Mesin
Published by Institut Teknologi Padang
ISSN : 20894880     EISSN : 25988263     DOI : https://doi.org/10.21063/jtm
Core Subject : Science, Engineering,
Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
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. JTM is managed to be issued twice in every volume (April and October). The Scope of JTM is: Energy Science and Engineering Applied Mechanics and Materials Design, Manufacturing and Product Development Control, Instrumentation and Robotics
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 247 Documents
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The Effect of Adding Prim ary Epoxy on the Corrosion Rate of Low Carbon Steel in 5.25% Calcium Hypochlorite Solution Ismet Eka Putra; Haleri Echo Yeyen Hidayat
Jurnal Teknik Mesin Vol 12 No 2 (2022): Jurnal Teknik Mesin Vol.12 No.2 October 2022
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2022.v12.i2.120-123

Abstract

The corrosion process occurs in almost all materials, especially metals, slowly but surely, which can cause a material to have a limited service life. Corrosion cannot be prevented but the rate can be reduced. One of t he methods to inhibit the effective corrosion rate is by giving epoxy primer treatment. This study aims to examine the effect of adding epoxy primer on the corrosion rate of low carbon steel immersed in a 5.25% Calcium hypochlorite solution. This research was conducted using 27 specimens in 9 vessels, each vessel contained 3 specimens immersed in low carbon steel without treatment, oil paint and epoxy primer. Volume of 1 liter of solution for 1 vessel. The results of this study indicate that the epoxy primer is able to inhibit the corrosion rate well. The reduction in weight of low carbon steel treated with oil paint is much greater than that of untreated low carbon steel using epoxy primer. The lowest corrosion rate was given by applying epoxy primer in 30 days of immersion with an average value of 0.001001695 mpy and the highest corrosion rate without treatment in 15 days of immersion with an average value of 0.005008473 mpy.
Design and Manufacturing of Wind Tunnel for Turbine Impeller Airfoil Testing Karnova Yanel; Asmara Yanto
Jurnal Teknik Mesin Vol 12 No 2 (2022): Jurnal Teknik Mesin Vol.12 No.2 October 2022
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2022.v12.i2.124-130

Abstract

In this study, the design of a wind tunnel was carried out to observe airflow through an airfoil, streamlines and turbine blades. To accommodate this, in this study a design was made of an open return wind tunnel. In this case, an open circuit wind tunnel type will be made because the construction is simpler and the manufacturing costs are relatively cheaper compared to the closed circuit wind tunnel type. The Wind Tunnel is designed with Open CLosed Wind Tunnel (OCWT) type. The OCWT is designed to consist of fan and housing, diffuser, test section, contraction, honeycomb. The OCWT design uses an operating fan to circulate air into the test section. The maximum air speed in the Test Section is 5 m/s with a flow that is closed to laminar. The recommended diffuser has a dimension of 50 cm on the side that is attached to the test section and 52 cm on the side facing the fan with an inclination angle of 1.79o. The driver uses a 16 inch exhaust fan with a power of 74 W to make the flow in the Test Section stable at a speed of 2 m/s.
Measurement of the sound absorption coefficient of palm frond fiber composites with synthetic adhesives Putri Pratiwi; Abdul Rahman; Asmara Yanto
Jurnal Teknik Mesin Vol 12 No 2 (2022): Jurnal Teknik Mesin Vol.12 No.2 October 2022
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2022.v12.i2.131-137

Abstract

Natural fiber composite materials have been widely applied for various purposes, one of which is reducing noise. Many efforts have been tried to reduce noise by using sound absorbing materials such as glasswool, rockwool, and gypsum as sound absorbers, but because of the high price and bad impact on health, many studies have been conducted to find materials that are practical, cheap, and abundant availability in nature, one of which is natural fiber as an alternative to commercial sound absorbing materials. In this study, we want to know the effect of the composition of palm fronds with polyester resin can affect the sound absorption of a material and the effect of composition on sound absorption. The composition of palm frond fiber and polyester resin was varied 60%:40%, 65%:35%, 70%:30%, 75%:25%, 80%:20%, 85%:15%, 90%:10%, arranged randomly with a length of 5 mm. The specimen synthesis process starts with cutting the palm fronds, decomposing the palm frond fibers so that the fibers are separated from the flesh. Acoustic testing was conducted using a single microphone impedance tube. The test results showed that the largest absorption coefficient value is 0.984 at a frequency of 1500 Hz and is obtained in materials with a composition of 70%: 30%, and for the largest acoustic impendance value is 1.714 which is found at a frequency of 500 Hz and is obtained in the composition of 85%: 15%.
Evaluation and Design Development of Rice Milling Machine Rozi Saferi; Asmara Yanto; Zhafran Zuhairi Yodi Putra
Jurnal Teknik Mesin Vol 12 No 2 (2022): Jurnal Teknik Mesin Vol.12 No.2 October 2022
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2022.v12.i2.138-147

Abstract

This study aims to identify and determine the level of consumer needs related to rice milling machine and, to develop a House of Quality (HOQ) to determine the dominant design requirements and the priority technical characteristics of the tool. The benefit of this research is to facilitate the design development so that it can continue to provide improvements to the quality of the rice grinder so that the quality of the rice produced can be maintained. The research method used is the Quality Function Deployment (QFD) method by conducting a survey to the field which aims to determine the level of consumer needs by distributing questionnaires and seeking information about what farmers need to make the farmer's work easier. Questionnaires were distributed to the community, most of whom work as farmers and workers in rice mills. The research location is in Pariaman Regency and Padang City. The results of this study are the highest priority scale from the aspect of consumer needs, namely fast work with a weight value (3.63) and from the technical response aspect, namely energy needs with a weight value (36.15). Based on the House of quality analysis, design development is focused on improving performance and optimizing energy sources using solar energy.
Characteristics of Palm Kernel Shell/Alumina/Epoxy Composites as Motorcycle Brake Pad Material Mastariyanto Perdana; Meiki Eru Putra; Akmal Akmal; Hengki Putra; Murfid Al Ikram; Ardhy Meidianda
Jurnal Teknik Mesin Vol 13 No 1 (2023): Jurnal Teknik Mesin Vol.13 No.1 April 2023
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2023.v13.i1.13-18

Abstract

Brake pads are one of the components of a motor vehicle that functions to slow down or stop the vehicle's motion. In the concept of braking, one inevitable factor is wear and tear. Wear and tear occur when two objects press against each other and create friction. Composite material is an alternative substance that can be used to replace asbestos brake pads. In this research, shell of palm oil, alumina (Al2O3) powder and epoxy was used for material of brake pad. Type of brake pads was made in this study is brake pads used for motorcycle disc brakes. Addition of volume fraction of alumina powder to 6% in composite material. The aims this study was determine the characterization of brake pad based on composite materials with addition of alumina powder in composite material. This study showed that there was increase of physical and mechanical properties with the addition of alumina powder in composites up 6% by volume fraction.
Performance Testing of The CNC Laser Engraver Machine on Plywood Media Anrinal; Muhammad Fadherizal; Asmara Yanto
Jurnal Teknik Mesin Vol 13 No 1 (2023): Jurnal Teknik Mesin Vol.13 No.1 April 2023
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2023.v13.i1.1-5

Abstract

This work aims to test and analyze the performance of the CNC Laser Engraver Machine on plywood media by using the grbl settings. The engraving process was conducted by using three filling methods in the grbl setting, i.e., reversed diagonal filling, horizontal filling and no filling. In the reversed diagonal filling method is tested a gears image input, in the horizontal filling method is tested a rumah gadang image input and in the no-filling method is tested a piston image input. The machine performance was assessed by comparing the CAD-based images input with the engraved images output that are carved on plywood media by a laser speed setting of 1000 mm/min, a laser power scale of 60% and a distance of laser from the media of 5 cm. From this assessment it can be concluded that the CNC Laser Engraver Machine is capable to create the shape and size of the images output that is the same as the shape and size of the images input. Here, the images size is obtained by a vernier caliper that has an accuracy of 0.05 mm.
Characterization of Sound Absorption Coefficient and Acoustic Impedance of Palm Frond Fiber Composites with Pine Resin on Various Composition Variations Putri Pratiwi; Asmara Yanto
Jurnal Teknik Mesin Vol 13 No 1 (2023): Jurnal Teknik Mesin Vol.13 No.1 April 2023
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2023.v13.i1.6-12

Abstract

This research aims to investigate the ability of sound absorption coefficient and the acoustic impedance of Palm Frond Fiber Composites using the one-microphone impedance tube method. We used Palm Frond Fibers as a filler and pine resin as an alternative adhesive of composite with a volume fraction of 50%: 50%, 60%: 40%, 70%: 30%, 80%: 20%, and 90%: 10%. The sound absorption coefficient and acoustic impedance of composites were studied at 500, 1000 Hz, 1500 Hz, 2000 Hz, and 2500 Hz frequency. The results showed that the highest sound absorption coefficient was found in 1500 Hz frequency and using volume fraction 70%:10%. The highest acoustic impedance response was found in composite with a fiber composition of 90% and at the test frequency with a range of 500 Hz -1500 Hz. The composition of the adhesive and fiber greatly affects the impedance value because it was related to the formation of pores in the composite. Based on ISO standard 11654:1997, the value of the sound absorption of sound waves was 0.15, and Palm Frond Fiber had a value above, so it had the potential used as sound absorption material.
Failure Analysis of Induced Draft Fan Bearing in PT Semen Padang Using The RCM Method Rozi Saferi; Sulaeman; Olka Defra Wanda
Jurnal Teknik Mesin Vol 13 No 1 (2023): Jurnal Teknik Mesin Vol.13 No.1 April 2023
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2023.v13.i1.19-26

Abstract

The development of the technology is getting trigger competition in industri. To compete, companies should can provide products and the quality of services best for consumer. This study aims to find out the causes of bearings that are damaged in the Induced Draft Fan (IDF Bearing) and how to plan strategic maintenance of IDF Bearing. The method used is reliability centered maintenance (RCM). The causes of bearing damage are analyzed using the Failure Mode Effect and Critical Analysis (FMECA) method. The results of this study show that the cause of IDF Bearing damage is clearance with an RPN value of 210, lubrication system with an RPN value of 36, unbalance with an RPN value of 72, and high temperature with an RPN value of 54. Scheduled Restoration Maintenance is applied for IDF Bearing , where task or preventive maintenance in the form of oil change with a time of 5803.2 hours or 241 days.
Effect of Electrode Moisture in DC Current SMAW Process on The Welding Results of Low Carbon Steel Hafni Hafni; Novriwan Novriwan
Jurnal Teknik Mesin Vol 13 No 1 (2023): Jurnal Teknik Mesin Vol.13 No.1 April 2023
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2023.v13.i1.27-31

Abstract

Welding using a wetelectrode and polarity selection is thought to affect the defects that usually arise in the welding results of low carbon steel type ST 37. To find out how much influence the humidity of the electrode and polarity have on defects in low carbon steel welding results, a study was carried out using oil fluids as a moisturizing agent for the electrode. The process of humidifying the electrode is carried out by immersing the electrode until it absorbs the oil fluid before welding it on the base metal. After welding with these electrodes, a metallographic test was carried out to observe the macrostructure and microstructure of the welding results. The conclusion that can be drawn from the test results is that the humidity of the electrode by oil does not affect the defects that arise in low carbon steel welding results as long as it does not damage the flux from the electrode.
Analysis of Fan Component Maintenance in the Cement Mill of PT Semen Padang Indarung V Factory using the Reliability Centered Maintenance Method Approach Nendar Almeiwiyanto; Sulaeman
Jurnal Teknik Mesin Vol 13 No 2 (2023): Jurnal Teknik Mesin Vol.13 No.2 October 2023
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2023.v13.i2.54-59

Abstract

The impact of environmental air pollution is causing a decrease in air quality which has a negative impact on human health. The size of dust particulates that endanger general health ranges from 0.1 micro to 10 micro. In general, the size of dust particulates of around 5 micro is airborne particulates that can directly enter the lungs and settle in the alveoli. The impact on the life time of one of the components in the mill fan is the presence of dust as a polluting element in the impeller, therefore a particulate device is needed. Miil Fan requires continuous and scheduled maintenance so that the tool works optimally. If damage occurs in these two parts, the final process of making cement will stop. Then the Reliability Centered Maintenance (RCM) method was chosen, which is a systematic process used to determine what must be done to ensure that each physical facility of the company can comply with the design function continuously within a certain period of operation. The components analyzed in RCM are critical components which were previously analyzed using the Failure Mode, Effect and Critically Analysis (FMECA) method. The components analyzed are components with a Risk Priority Number value >60 (above critically high status). Analysis of the fan engine (P05) shows that there are 3 critical components, namely the impeller, bearing and V-belt.

Page 21 of 25 | Total Record : 247

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