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Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin

DTM
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Published by Universitas Mataram

ISSN : 2088088X EISSN : 25021729 DOI : https://doi.org/10.29303/dtm.v14i1

Core Subject : Science, Engineering,

Aerospace Engineering Automotive Engineering Mechanical Engineering Physics

The Dinamika Teknik Mesin is a peer-reviewed academic journal which publishes originally research papers or simulation/computational articles in all aspect of Mechanical Engineering such as energy conversion, materials, design and production/ manufacturing. The Dinamika Teknik Mesin publishes in two issues per volume annually appearing in June and December. Due to administrative constraints, then starting in January 2018, the Dinamika Teknik Mesin publishes the volume and issue in January and July. However, starting in 2020, the Dinamika Teknik Mesin publishes issues in April and October due to the new administration.

Arjuna Subject : Teknik (semua kategori) - Teknik Mesin

Articles 452 Documents

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Identifikasi kualitas proses shield metal arc welding (SMAW) melalui monitoring arus dan daya real-time A. Sifa; T. Endramawan; N. Niantoro
Dinamika Teknik Mesin Vol 10, No 2 (2020): Dinamika Teknik Mesin
Publisher : Universitas Mataram

The shield metal arc welding Monitoring welding process is simple and more economical so it is widely used in small and large industries, and can also be used anywhere, quality control is very important to ensure the results of welding connections have good quality, some important parameters in the welding process include current, voltage and welding speed. Monitoring of the welding process is very important in addition to monitoring the quality of the process and the results of welding; the monitoring process is very effective and efficient without the need for additional time and costs to carry out damaged tests after the welding process. Real-time monitoring method using the Arduino microcontroller system, the welding experiment process is carried out at position 1F with two sides and using ST37 steel material and after welding the quality is checked using the method Non-Destructive Test-Liquid Penetration Test. The result of in the welding process the minimum current occurs is 21 amperes occurs in the welding process position 1F and the maximum current that occurs is 41.1 defects occur when the current is below 27.5 Amperes, in addition to the current that causes the welding defects, other variables can also cause welding defects such as welding position 1F part B there are defects in the welding process with 29 Amperes Flow, and identification of welding quality through a real-time monitoring system with current and power parameters.

Efek gaya tekan pembuatan hibrid komposit berpenguat SiCw/Al2O3 dengan wetting agent Mg terhadap sifat fisik dan mekanik Suarsana, K.; Suardana, N.P.G.; Negara, D.N.K.P.; Sunu, P.W.; Triadi, A.A.A.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 11, No 1 (2021): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

The growing demand for metal-based materials in the manufacturing industry has prompted the development of composite materials that have better mechanical and physical properties than single materials. The development be done in order to obtain new materials that have better properties. The research was conducted using a powder metallurgy process, by varying the compressive force and holding time in order to determine the effect of the combination of compression and holding time on the mechanical and physical properties of composites. The variations in the compressive force are 20, 25, and 30 kN, with a holding time of 15, 30 and 45 minutes for each force. Research includes tests of density, porosity, hardness, wear and Scanning Electronic Microscope. The results of the density test showed that the highest density value was 2.982 gr/cm3 and the lowest porosity value was 13.074% at a compressive force of 25 kN, holding time of 45 minutes. The results of the highest hardness value 53.455 kg/mm2 at 30 kN, 45 minutes and the lowest wear value 2.15455E-05 gr at a pressure of 20 kN, 15 minutes. Based on the test results, the characteristics of the density are inversely proportional to the porosity, while the hardness and wear are influenced by the length of holding time in the moldof a composite using aluminum as a matrix needs too.

Analysis of cross-sectional area of digester on biogas production rate Tira, H.S.; Padang, Y.A.; Sukrenewita, I.K.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 11, No 1 (2021): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Biogas has become one of the promising alternative fuels. This is triggered by relative ease of production while on the other hand the raw material is cheap and easy to be obtained. In order to get higher biogas production rate, a work has been done with digester cross-sectional area modification. Under the modification an improvement in biogas yield was obtained. The research also has opened up new outlook to set up a better digester design for maximum biogas production. The experimental results showed that a higher biogas volume yield was obtained in larger cross-sectional area compared to that of smaller one. Increasing the cross-sectional area twice will benefit at least three times in terms of biogas volume produced under similar raw material input volume. A wide-open cross-section surface is a major factor for good breeding of microbial to produce methane. Under the condition, microbes experience less pressure due to the evenly distributed volume of the substrate which resulted in a comfortable environment for bacteria.

Cover Dinamika Teknik Mesin Oktober 2020 M. Mirmanto
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 10, No 2 (2020): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (46.486 KB)

Cover Dinamika Teknik Mesin Oktober 2020

Biomassa dan bioarang dari limbah kotoran kuda tanpa dan dengan perlakuan menggunakan sodium hidroksida: studi nilai kalor dan kadar abu Padang, Y. A.; Sari, N. H.; Nurchayati, N.; Triadi, A.A. A.; Sutaryono, Y. A.; Muharman, M.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 10, No 2 (2020): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

This study aims to determine and test the characteristics of horse feces briquettes without and with NaOH treatment as an alternative fuel. The experiment has been carried out in a laboratory. Biomass has been treated with 8% NaOH for 2 h, and has been compared with untreated biomass briquettes. Characterization of the calorific value and ash content of biomass briquettes and bio charcoal briquettes have been investigated. The results showed that the heat value for briquette samples after being treated increased in the range of 4894.6 cal/g – 5855.16 cal/g, while the ash content decreased in the range of 39% to 49.44%; this is caused by a decrease in non-lignocellulosic of horse feces content. It can be concluded that the horse feces biomass briquette with NaOH treatment can be an alternative fuel to replace the skin and leaf briquettes.

Pemamfaatan logam sisa permesinan pada knalpot guna mengurangi pencemaran udara Siregar, A.M.; Siregar, C.A.; Affandi, A.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 11, No 1 (2021): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Exhaust gas emissions from motorized vehicles also contribute to air pollution in our environment. So it is necessary to reduce air pollution so that the negative impacts on humans, animals and the environment can be reduced. Hoping and making alternative tools to reduce exhaust gas in 100cc motorcycle vehicles. With experimental methods and testing of 100cc motor vehicle exhaust emissions with a comparison of standard exhaust data. Tests are carried out on the exhaust to determine the results of exhaust gas emissions, plus a modified exhaust with the addition of scrap ST-40 iron. The elements to be observed are the CO value, HC value and CO2 value as comparative data. The tool that will be used to store and view these elements is the Gas Analyzer. This tool is a useful tool for measuring the portion and composition of combined gases. From the results of testing and analysis, it is obtained exhaust gas emission testing data with an average engine speed of 500 rpm, and exhaust pipe temperature of 400C to 450C. After the standard exhaust model, then the exhaust model. In tests that added 50 g, 70 g, and 90 g of ST-40 iron, it was found that the best way to reduce and reduce exhaust emissions was an exhaust with added pieces of ST-40 90 g iron. And when compared to standard exhaust, CO element drops to 72.35% and HC element drops to 58.70%. and the element CO2 decreased to 74.28%.

Studi eksperimental tentang pengaruh diesel particulate filter terhadap reduksi tingkat kebisingan mesin diesel empat langkah Warju, W.; Ariyanto, S. R.; Soeryanto, S.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 10, No 2 (2020): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

The purpose of this research is to produce DPF technology made from copper plates and glass wool that can reduce the noise level of four-stroke diesel engine vehicles. This research is an experimental research where the object of research used is Isuzu Panther 1996. The research instruments used include the chassis dynamometer, sound level meter (SLM), and manometer. The data analysis technique used descriptive method and compared with the noise threshold in Minister of Environment Regulation No. 07 of 2009. The results showed that DPF Cu and 100 gr glass wool was able to reduce noise level by an average of 3.1% to 6.5%. At an engine speed of 3750 rpm, DPF Cu 20 mm, DPF Cu 15 mm, and DPF Cu 10 mm and 100 gr glass wool, each produced noise level of 101.5 dBA, 98.4 dBA, and 97.8 dBA.

Studi eksperimen kinerja turbin vortex berbasis gravitasi dengan sudu backward dan forward Pamuji, D.S.; Akbar, F.; Rohman, A.N.; Sugati, D.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 11, No 1 (2021): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Nowadays, the use of hydro energy in Indonesia is still focused on large-scale hydropower development which has negative effects on the environment such as changes in the natural flow of rivers, disruption of the population of aquatic biota that live in these watersheds and has the risk of potential disasters if the dam fails. In fact, the energy potential from the mini-micro hydro source is 19,835 MW, but its utilization is still very low around 100 MW. Therefore, the extraction of water flow energy in the form of rivers and irrigation channels with very low head altitude differences is considered important and urgent so that a gravity vortex turbine-based mini / micro hydro research is proposed. Specifically, this study aims to analyze the performance of the vortex turbine with backward and forward blades in a conical basin through laboratory experimental devices. Experiments were carried out on a fluid flow rate of 120 liters per minute (lpm) and 100 lpm by loading using a prony brake dynamometer in order to obtain torque performance data on variations in turbine blade rotational speed. In this experiment, the results showed that the performance of the backward blade turbine was superior with its optimal efficiency reaching 36.7% at a discharge of 120 lpm and a rotating speed of 80 rpm than the forward blade which at a discharge of 120 lpm and a rotating speed of 80 rpm was only able to achieve its highest efficiency at 33.19%.

Peningkatan kekerasan dan ketahanan korosi paduan Fe-2,9Al-0,4C dengan proses karburisasi padat Kartikasari, R.; Susiana, A.; Ocktavian, D.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 11, No 1 (2021): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Fe-Al-C alloy is a superior and economical new alloy to replace the ferritic stainless steel, whereas aluminum replaces chromium, which is relatively expensive. Some applications of Fe-Al-C alloys require hardness at the surface. This study aims to determine the effect of the temperature carburizing process on the hardness and corrosion resistance of Fe-2,9Al-0,4C alloys. Material used is Fe-2,9Al-0,4C steel alloy. Surface hardening using a solid carburizing method. The solid carburizing process carried out by the holding time for 3 hours at various temperatures of 850°C, 900°C, 950°C, 1000°C, and 1050°C. Carburized is used in the form of powder coal and MgCO3 catalyst. Tests carried out are chemical composition, microstructure, hardness, and corrosion tests. The test results show that the chemical composition of the Fe-2,9Al-0,4C alloy contains elements of 2.91% Al and 0.40% C. Microstructure formed is ferrite and pearlite with a dendritic pattern. The martensitic structure formed at 950°C, 1000°C, and 1050°C. The Carburizing process increases the hardness value where the higher temperature carburizing process, the higher hardness values until it reaches a maximum temperature of 1050°C with a hardness value of 1040.5 kg/mm2. The highest corrosion resistance value occurs after the 850°C carburizing process at a rate of 41.58 mpy corrosion (up 40.9% of the raw material). At a higher temperature carburizing process lowers the corrosion resistance of the alloy Fe-2,9Al-0,4C.

Optimasi perancangan turbin air axial aliran horisontal menggunakan analysis of variance Nurdin, A.; Himawanto, D.A.; Hadi, S.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 10, No 2 (2020): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

The number of blades factor and the blade angle factor on the propeller turbine will be affect to the performance, and one of these factors is dominant affected for the turbine performance. To optimize the design of propeller turbines, must be known the factors that most influence its performance. This study aims to investigate the significance test of difference value in shaft power due to the number of blade factor and the blade angle factor, and to determine the most dominant influence of these factors. Hypothesis test method of these factors on this study using analysis-of-variance or ANOVA with SPSS 17.0 software. The results of this study indicate the significant test in shaft power value in the number of blades factor and the blade angle factor, and there is a relationship between both factors influences in shaft power value significantly. This study also shows the blade angle factor has the most dominant effect in shaft power value, beside the number of blade factor.

Page 20 of 46 | Total Record : 452

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Mirmanto

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dinamikateknikmesin@gmail.com

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+6282111738971

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dinamikateknikmesin@gmail.com

Editorial Address
Jurusan Teknik Mesin, FT, Universitas Mataram, Jl. Majapahit no. 62, Mataram, NTB, 83125, Indonesia

Location
Kota mataram,

Nusa tenggara barat

INDONESIA

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Mirmanto

Contact Email dinamikateknikmesin@gmail.com

Phone +6282111738971

Journal Mail Official dinamikateknikmesin@gmail.com

Editorial Address Jurusan Teknik Mesin, FT, Universitas Mataram, Jl. Majapahit no. 62, Mataram, NTB, 83125, Indonesia

Location Kota mataram, Nusa tenggara barat INDONESIA

Abstract

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Abstract

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Abstract

Contact Name
Mirmanto

Contact Email
dinamikateknikmesin@gmail.com

Phone
+6282111738971

Journal Mail Official
dinamikateknikmesin@gmail.com

Editorial Address
Jurusan Teknik Mesin, FT, Universitas Mataram, Jl. Majapahit no. 62, Mataram, NTB, 83125, Indonesia

Location
Kota mataram,

Nusa tenggara barat

INDONESIA