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Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin
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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OPTIMASI PARAMETER PERMESINAN TERHADAP WAKTU PROSES PADA PEMROGRAMAN CNC MILLING DENGAN BERBASIS CAD/CAM Yudhyadi, I G.N.K.; Rachmanto, Tri; Ramadan, Adnan Dedy
Dinamika Teknik Mesin Vol 6, No 1 (2016): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v6i1.24

Abstract

Milling process is one of many machining processes for manufacturing component. The length of time in the process of milling machining is influenced by selection and design of machining parameters including cutting speed, feedrate and depth of cut. The purpose of this study to know the influence of cutting speed, feedrate and depth of cut as independent variables versus operation time at CNC milling process as dependent variables. Each independent variable consists of three level of factors; low, medium and high.Time machining process is measured from operation time simulation program, feed cut length and rapid traverse length. The results of statistically from software simulation MasterCam X Milling, then do comparison to CNC Milling machine.  The data from experiments was statistical analyzed by Anova and Regression methods by software minitab 16.Results show that the greater feedrate and depth of cut shorten the operation time of machinery, whereas cutting speed is not significant influence. Depth of cut has the most highly contribution with the value of 49.56%, followed by feedrate 43% and cutting speed 0.92%. Optimal time of machining process total is 71.92 minutes, with machining parameter on the condition cutting speed is 75360 mm/minutes, feedrate is 800 mm/minutes and depth of cut = 1 mm. Results of comparison time machining process in software Mastercam X milling with CNC Milling machine indicates there is difference not significant with the value of 0,35%.
Simulasi tegangan pada pengaruh putaran roda terhadap speed bump menggunakan metode FEM Hidayat, R.; Haryono, M.B.
Dinamika Teknik Mesin Vol 8, No 2 (2018): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v8i2.244

Abstract

The interaction between tires with road surface is very important because it can reduce the risk of accidents due to damage to the tire. This research was investigated the stress distribution as a result on pressure of tires rolling across speed bump. The research methode used solid work and abaqus application to simulation, the paramaters on research used variation on high speed bump (75mm, 120mm and 160mm) and tires speed (8, 20 and 30kmh). The result showed the higher load recived by tires, the higher stress produced The interaction between tires with road surface is very important because it can reduce the risk of accidents due to damage to the tire. This research was investigated the stress distribution as a result on pressure of tires rolling across speed bump. The research methode used solid work and abaqus application to simulation, the paramaters on research used variation on high speed bump (75mm, 120mm and 160mm) and tires speed (8, 20 and 30kmh). The result showed the higher load recived by tires, the higher stress produced 
ANALISA NILAI KALOR DAN LAJU PEMBAKARAN PADA BRIKET CAMPURAN BIJI NYAMPLUNG (Calophyllm Inophyllum) DAN ABU SEKAM PADI Almu, M. Afif; Syahrul, S.; Padang, Yesung Allo
Dinamika Teknik Mesin Vol 4, No 2 (2014): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v4i2.61

Abstract

The fuel is a source of energy with greatest consumption today. Where that stock is become less until 2025th. That’s way, it must to find some new energy to replacement, that one of alternative that is a fuel of solid phase that become from briquette. The briquette that use is compound between nyamplung’s fruit and rice husk. In this case because in NTB nyamplung’s fruit and  rice husk  is overabundance.This research conducted three testing that are testing of heat value, testing of combustion rate, and testing of dry measure. In case where to testing of heat value using bomb calorimeter. Independent variable both of this research is combine. Between nyamplung’s fruit and rice husk with comparison 1:1, 2:1, 3:1, 1:2, and 1:3. The highest heating value is obtained from sample 3:1 as big as 4792,40 cal/gr, the lowest rate of combustion from sample 3:1 as big as 0,00156 gr/s and the lowest of dry measure lowest from sample 1:1 that is 21,52%. 
Studi pengaruh kadar mangan dan temperatur austenisasi terhadap struktur mikro dan sifat mekanik baja mangan Bahfie, Fathan; Aleiya, Zakhrofa; Milandia, Anistasia; Nurjaman, Fajar
Dinamika Teknik Mesin Vol 10, No 1 (2020): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v10i1.317

Abstract

High manganese steel or austenitic manganese steelcommonly are used in mining industries such as thecomponent in an excavator, hammer mill, crusher, andjaw crusher plates. Those components are the alloy caststeel with containing manganese (Mn) about 11-18%.The mechanical properties of austenitic manganesesteel are depending on the amount of manganese andcarbon. The austenitic steel has three dominantproperties, i.e. high hardness; good wear resistance, andhigh impact resistance. The objectives of this researchare investigating the effect of the composition ofmanganese and the austenitization temperature on themicrostructure and mechanical properties of austeniticmanganese steel. Each variation of manganesecomposition was 5.87%. 9.42% and 15.28%. It washeated at 950, 1000 and 1050oC for 60 minutes and thenquenched with water. The result showed that the highesthardness was 46 HRC where the composition ofmanganese and the austenitization temperature was5.87%. and 1050oC. The lowest hardness number was16.3 HRC where the content of manganese and thetemperature was 9.42%. and 1050oC. The results agreedwith the microstructure of the increase in carbides andthe composition of manganese increased too. For thewear resistance properties, the optimum one was 6.78 x10-6 mm3/m at the composition of manganese andtemperature of 5.87% and 1050oC.
Analisis pemanasan oven untuk destilasi uap-air dengan hasil panas matahari pada biji buah pala di Kabupaten Fakfak Rusdin, R.; Mustari, M.; Iswar, M.
Dinamika Teknik Mesin Vol 13, No 1 (2023): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v13i1.618

Abstract

Nutmeg seeds drying in Fakfak Regency still apply the traditional method, namely, placing the seeds on tarpaulins or mats under the sun. The problem is that the sun’s temperature depends on the weather. Therefore, the oven-drying method should be applied. Steam-water distillation is steam-water heat from a tube (pan) which is heated using firewood. Oven drying can be controlled in terms of temperature and duration to increase production effectiveness and efficiency. Based on the results of the oven and sunlight heating, the following moisture contents were obtained. Heating for 2 hours resulted in an average of 16.71% STDV1.99; 4-hour heating brought about an average of 16.10% STDV 1.53; 6-hour heating produced an average of 13.87% STDV 0.56; 8-hours heating turned out0 an average of 10.17% STDV 0.05; and an average of 8.57% STDV 0.42 for normal heating. According to SNI 01-0006-1993, from the moisture-contents testing for 3 quality categories, the moisture content of 10.54% was for quality 1 (ABCD), 8.64% for quality 2 (RIMPEL) and 11.92% for quality 3 (BWP). Accordingly, the SNI quality requirements for the maximum moisture content of nutmeg seeds was 10%; quality 1 and quality 2 met SNI requirements. The research revealed that, according to SNI, the 9-day solar heating resulted in a quality of category 2 meanwhile the 9-day oven-heating on the nutmeg seeds produced a quality of category 1
Utilization of outdoor units as freshwater freezing machines on various masses of salt solution Mirmanto, M.; Sayoga, I.M.A.; Waasi, A.
Dinamika Teknik Mesin Vol 14, No 2 (2024): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v14i2.947

Abstract

The effect of solution mass on freezing the freshwater using an AC outdoor unit was investigated. The AC outdoor capacity was ½ PK and the evaporator to absorb the heat from the freshwater was designed in the form of a square spiral placed in a freezing box. The outdoor used R32 as the working fluid. The solution mass variations were 10 kg, 12 kg and 14 kg.   The freezing box was filed with saline solution with a concentration of 20%. The mass of fresh water that was frozen was wrapped in plastic with a mass of water per package of 500 grams. The total mass of the freshwater was 10 kg. The results show that the fastest freezing time occurs at a mass of 10 kg of salt solution with a freezing time of 3.5 hours and the longest freezing time is at a mass of 14 kg of solution with a freezing time of 6 hours. The highest total heat flow rate is 554 W found in the variation of 10 kg solution mass. The AC outdoor unit is very effective to be used as a freezing machine with an EER of 5.8.
Pengaruh laju pemanasan dan variasi komposisi limbah paduan aluminium dengan Fly Ash Batubara terhadap kekerasan dan kekuatan tekan produk metalurgi serbuk Triadi, A.A.A.; Setyawan, P.D.; Kurniawan, I.K.
Dinamika Teknik Mesin Vol 13, No 2 (2023): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v13i2.682

Abstract

In this study, the manufacture of composites using the powder metallurgical method used two research variables, namely the rate of heating with variations in temperature with an increase of 3°C/minute, 5°C/minute and an increase of 7°C/minute.  The second variable is the mixing composition with variations in aluminium composition: Fly Ash is 100%:0%, 85%:15%, 80%:20% and 75%:25%.  The highest hardness results in this study were found in the 15% fly ash composition with a heating rate of 3°C/minute where the hardness value was 66.17 HRF while the lowest hardness value was found in the 0% fly ash composition with a heating rate.  of 7°C/min with a hardness value of 34.84 HRF.  For compressive strength test results.  the highest value was obtained in the 15% Fly Ash composition with a heating rate of 3°C/minute where the compressive strength value was 106.78 MPa, while the lowest compressive strength value was in the 0% fly ash composition with a heating speed of 7°C minutes where the value was 42.71 MPa.  From the hardness and compressive strength value, it can be concluded that the smaller the heating rate, the higher the hardness and compressive strength and the greater the SC mixing composition, the higher the hardness and compressive strength.
Wear evaluation of palm oil and SAE 15W 40 engine lubricants with a ball-on-disk tester based on an improvised drilling machine Alfian, D.G.C.; Silitonga, D.J.; Machzumy, F.M.Al; Oktaberi, F.; Triawan, L.
Dinamika Teknik Mesin Vol 13, No 2 (2023): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v13i2.679

Abstract

This paper introduces a modified ball-on-disk test, utilizing a drilling machine, to investigate the tribological behavior of wear on a plate surface under various lubrication conditions. The tribometer, based on the ball-on-disc principle, employs an improvised bench-top drill press machine. Despite its simplicity, it effectively facilitates wear-track experiments using engine oil (SAE 15W 40) and palm oil as lubricants. Tests are conducted at room temperature, maintaining a constant load at 8.83 N and rotational speed of 180 rpm for 2 minutes per sample. Microscopic analysis of wear scars on the plate samples reveals distinct wear patterns and characteristics for each lubricant, with measurements taken at multiple positions for accuracy. The current work focuses exclusively on wear scar analysis, with findings indicating that engine oil outperforms the counterpart, displaying a smaller wear track width, hence superior lubrication and wear protection capabilities. In contrast, palm oil exhibits a larger wear track, implying limitations in friction reduction and material preservation. This work has demonstrated the practical use of the cost-effective tribometer device for conducting preliminary studies of lubricant wear reduction performance. The test outcomes render valuable insights for lubricant formulators, particularly at the early stage of laboratory-scale development.
Advancements in PET bottle plastic slitting devices for raw material 3D printing filament production Utama, D.W.; Hagai, H.; Halim, A.; Chan, G.
Dinamika Teknik Mesin Vol 15, No 1 (2025): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v15i1.988

Abstract

The world is facing a significant environmental challenge due to the accumulation of plastic waste, especially PET (Polyethylene Terephthalate) bottles. Indonesia is no exception to this problem. Every year, millions of tons of PET bottles are produced, and most of them end up as waste that takes a long time to decompose. This study aims to investigate the technical and engineering aspects involved in creating a slitting device for PET bottle plastic, which will be used as raw material for Fused Deposition 3D printer filament. The research will focus on overcoming the challenges associated with producing consistent and high-quality raw materials filament and exploring innovative solutions and advancements in filament material design. The slitting device is designed to produce plastic strips with a consistent width of 10 mm and a tolerance of ±1 mm, using easily accessible cutting blades. Ensuring a consistent strip width is crucial for producing 3D printing raw material filament with a diameter of 1.75 mm and a tolerance of ±0.05 mm. Two versions of the slitting design, version 1 and version 2, were tested, and improvements were made to reduce friction and optimize cutting efficiency, resulting in consistent strip width. The second version performed better, producing longer, more uniform strips with lower pulling force. These strips are then proposed to be processed for 3D printing filament, demonstrating the potential of this tool to transform PET bottle waste into valuable raw materials
Karakteristik tekan, bending dan morphology komposit mortar ringan diperkuat serat limbah tekstil Sari, N.H.; Suteja, S.; Catur, A.D.; Jaya, D.P.
Dinamika Teknik Mesin Vol 13, No 1 (2023): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v13i1.593

Abstract

The composites was made from a foam mortar matrix with Hydrolized protein reinforced textile waste fiber and the compressive strength, flexural strength and fracture morphology characteristics of the composite have been reported. This study investigated the effectiveness of adding textile fiber waste to lightweight mortar composites to improve the mechanical characteristics of the composites, reduce weight and minimize production costs of mortar composites. Mortar composites are fabricated by varying the volume fraction of textile waste fiber from 0 to 1.2% (of the composite density). The results revealed that the addition of textile waste fiber to the mortar composites decreased bending strength and bending modulus. The maximum compressive strength of the mortar composite was obtained at a volume fraction of 0.6% textile fiber waste (0.30167 MPa) and the lowest compressive strength of 0.149 MPa was owned by the mortar composite without textile fiber waste (composite BTA). This phenomenon caused by the fiber pull out, interface bond between textile waste fiber and matrix, as shown from the SEM photo. The addition of excess textile fiber waste from optimal conditions reduces mechanical performance due to increased voids in the mortar composite. However, this strategy helpful to reduce the weight of the concrete, reduce production costs and reduce textile waste.

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