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Jurusan Teknik Mesin, FT, Universitas Mataram, Jl. Majapahit no. 62, Mataram, NTB, 83125, Indonesia
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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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Uji sifat fisik dan kimia bioetanol dari jagung (Zea mays L) Tira, H.S.; Mara, M.; Zulfitri, Z.; Mirmanto, M.
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.v8i2.231

Abstract

The aim of this research is to know the physical characteristics and chemical contents of corn bioethanol (Zea Mays L.). The bioethanol is produced by distillation process through variations in fermentation duration. The bioethanol produced then was tested in order to measure the physical characteristics and sulphur content. The measured physical and chemical characteristics of bioethanol were density, kinematic viscosity, flash and fire point and sulphur content.The results showed that the physical characteristic value and sulphur content of the bioethanol had close values compared to those of the standart. They were found in fermentation with duration of 70 hours under second distillation process. However a further research is still be required to obtain a suitable characteristic for transpostation purpose. 
ANALISA UNJUK KERJA MOTOR BAKAR BERBAHAN BAKAR BIOGAS TERMURNIKAN BERBASIS ABSORBER Fe2O3 Sutanto, Rudy; Alit, Ida Bagus; Nurchayati, N.
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.v4i2.56

Abstract

Long-term aim of this research is to obtain a biogas what the renewable natural gas quality and can be used to fuel an electric generator to support the availability of electricity in the region of small islands. Specific targets to be achieved is to determine whether the binding of H2S in biogas can raise engine peformance of the machine, information technology and the active materials so comprehensive to absorb hydrogen sulfide gas as materials of the textbook writing and articles for national journals. This research will be conducted a biogas testing in the engine performance, seen from the engine rotation (1500, 2500, 3500 and 4500 rpm) of the electric power generated and subtlety spin machine (braking force, fuel consumption) in both the before purified biogas and biogas has been purified. Results of the research that has been conducted in both the before purified biogas and biogas has been purified on peformance engine that does not change significantly for the better performance of the engine torque, effective power and fuel consumption (biogas) to treat a wide variety. Effect of reduction of H2S contained in the biogas no significant effect on engine performance but are more inclined towards corrosive metal material. Keywords: biogas, performance, torque, effective power
Kinerja modul surya melalui variasi solar collector dan kecepatan angin Tira, Hendry Sakke; Natsir, Abdul; Putranto, Tommy
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.v10i1.302

Abstract

Solar energy has been developed in wide areas because its potential to replace the current classic energy, fossil fuel. The advantages of solar energy are cheap and clean. To generate solar energy, photovoltaic is used. There are some factors affects the performance of photovoltaic. Some of them are the amount of light beam received and temperature of photovoltaic surface. This research was done to get better understanding of the factors on the photovoltaic performance. In order to reach the goal, two different solar reflector areas and wind velocity were applied. The wind source is coming from a blower while solar reflector was made from glass. The results showed that the watt peak, power point power maximum (PMPP), and output efficiency were increased by application of larger solar reflector and high wind velocity. Larger reflector application resulted in sun light can be focused directly to the solar panel therefore increasing the watt peak. Meanwhile, higher wind speed on the solar panel surface can reduce the solar panel surface temperature which lead to the improvement in maximum output efficiency.
Pemamfaatan logam sisa permesinan pada knalpot guna mengurangi pencemaran udara Siregar, A.M.; Siregar, C.A.; Affandi, A.
Dinamika Teknik Mesin Vol 11, No 1 (2021): 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.v11i1.369

Abstract

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%.
ANALISA LAJU PERPINDAHAN PANAS PADA KOLEKTOR SURYA TIPE PELAT DATAR DENGAN ABSORBER PASIR Wirawan, Made; Sutanto, Rudy
Dinamika Teknik Mesin Vol 1, No 2 (2011): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Solar energy constitute one of potential alternative energy to develop as a back up of energy. Especially for countries in khatulistiwa location belonging to Indonesia. For use solar energy needful collector that using absorber. Using sand as a absorber make up step for increase value and profit of sand, in a economics manner the price more cheap and easy to obtain than another absorber. The analysis use sand as a alternative absorber for solar collector did for understand rate of heat transfer to acceptanceof water. Dimention of collector are 560 mm x 310 mm with thick of sand absorber 10 mm and 1.2 mm for aluminum plate as a comparator. Observation did begin 10.00 am until 14.00 pm for the two of them in the weather clear sky. The rate of water in this research are 200 cc/min, 250 cc/min and 300 cc/mn for another dan at the same time. The result of analysis be obtained heat absortion by water for solar collector with aluminum absorber more large than sand absorber. The debit of water more and more large in the collector so absorb heat by water more large because incretion the mass flow rate of water (m  ). The heat losses in the solar collector aluminum absorber more than sand absorber.
Evaluasi perpindahan panas dan efisiensi superheater pada unit multi fuel boiler Panjaitan, J.R.H.; Sihotang, J.S.; Sirait, K.M.; Pakpaha, R.
Dinamika Teknik Mesin Vol 14, No 1 (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.v14i1.761

Abstract

The heat exchanger was used to carry out the heat exchange process between two fluids. One of the heat exchangers is the Multi Fuel Boiler. In multi-fuel boilers, there was a superheater which functions to convert saturated steam into dry steam. In this research, the evaluation of superheater heat transfer efficiency in Multi Fuel Boiler Units will be studied. The results showed that the highest heat transfer coefficient for the superheater was on day 6 at 141,942.81 W/m2K with 56.51% efficiency. Meanwhile, the highest superheater efficiency was 58.72% on day-7 with the heat transfer coefficient being 130,755.76 W/m2K. Factors such as steam temperature, flue gas temperature, steam and flue gas flow rate, heat transfer area and soot blower influence the heat transfer coefficient and efficiency of the superheater.
Evaluasi efektifitas effective microorganism-4 (EM-4) dalam menaikkan volume produksi biogas Tira, H.S.; Syahrul, S.; Umbara, E.G.
Dinamika Teknik Mesin Vol 8, No 1 (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.v8i1.40

Abstract

Anaerobic digestion process of cow dung was observed over 30 days with addition of effective microorganism – 4 in regard to improve biogas volume production. Temperature for biogas production was kept constant and was conducted at mesophilic mode. It was found that EM-4 addition was effective to increase the biogas yields production. The improvement in biogas volume was recorded as high as 87.8% which was achieved in 10% v/v EM-4 addition. However, the solution concentration should be limited in certain amount. By experimentally work, the results showed that adding more EM-4 into digestate resulted in reduction of biogas volume gradually. The most influential factor of the result may be attributed by the alteration of digestate pH from netral to more acidic. This acidic condition hampered microorganism to do anaerobic process well. 
PENGARUH PENAMBAHAN LIMBAH PLASTIK BEKAS TERHADAP KARAKTERISTIK KEKUATAN TARIK DAN KEKUATAN BENDING MATERIAL POLIMER KOMERSIL Sujita, S.; Hadi, S. Gunawan
Dinamika Teknik Mesin Vol 5, No 1 (2015): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Polyester, epoxy and polyurethane composites are widely used for the matrix. The use of composite materials in the manufacturing industry as well as many studies of composites by utilizing plastic powder and the lack of studies directly comparing the tensile strength and bending properties of composite plastic powder to the treatment of the same fiber. The purpose of this study was to determine the tensile and bending strength of the composite material of polyester, epoxy, and polyurethane with reinforcing plastic powder by varying the volume fraction. In this study, the material used is plastic powder, with a size of 8 mm and the preparation of chopped random fibers, with a fiber volume fraction (0% / 100%, 5% / 95%, 10% / 90%, 20% / 80%, 30 % / 70%, 40% / 60, 50% / 50%, 60% / 40%, and 70% / 30%), using polyester resin, epoxy, and polyurethane as matriknya. Comparison of epoxy resin and polyurethane that is one to one, while for polyester using the catalyst of 2%. Tensile testing with ASTM D 3039, and bending test were conducted with ASTM D 790. The results of tensile testing tensile strength values obtained by variation of the highest volume fraction of 0% is owned by a composite plastic powder with 100% polyester resin with a value of 35.22 MPa, followed by a variation of the volume fraction of the composite with 0% plastic powder with 100% epoxy resin with the strength values pull of 6.40 MPa. While bending test results obtained the highest bending strength values held by the variation of volume fraction of the composite 0% plastic powder with 100% polyester resin with a value of 66.985 MPa, then successively followed by the composite with the highest volume fraction variation possessed by 30% of composite powders plastic with 70% epoxy resin with a value of 42.078 MPa bending strength, for a volume fraction of 50% variation of plastic powder with 50% polyurethane resin to obtain the highest value of bending strength of 6.963 MPa.
Analisa unjuk kerja alat pembagi tekan pada pompa hydram Wardani, K.
Dinamika Teknik Mesin Vol 9, No 2 (2019): 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.v9i2.287

Abstract

Water is source of life for human being, plant and animal. One of  effort to complete of water required is by using hydram pump. Hydram pump (Hydraulic ram pump) is a pump that work without required energy from outside for its activated, but work done by exploiting force from source of water. This research purposes to know influence of pressure divisor to water hammer effect and to know influence of pressure divisor to efficiency of hydram pump. This research used hydram pump by the specification of air tube it’s 60 cm height and 3 inches diameter. Elevation of plunge from pump body is 2 meters and elevation of output is 4 meters. Height of air tube at pressure divisor that is 20 cm, 30 cm, 40 cm and 50 cm and elevation of variaty pressure divisor from body pump is 2 meters, 2,5 meters and 3 meters. The method used in this research is experiment method. The quantitative data  made in table and displayed graphically. The results show that the highest of maximum head at 2 meters elevation of pressure divisor  from pump body and 20 cm high of tube, while lowest of maximum head at 3 meters elevation of pressure divisor  from pump body and 50 cm high of tube. The best efficiency at 2 meters elevation of pressure divisor  from pump body and 20 cm high of tube that is 31,62%, while the lowest efficiency at hydram pump installation without of pressure divisor that is only 26,62%.
ANALISA PENGARUH VARIASI BENTUK ABSORBER PADA ALAT DESTILASI AIR LAUT TERHADAP KENAIKAN SUHU AIR DALAM RUANG PEMANAS DAN JUMLAH PENGUAPAN AIR YANG DIHASILKAN Mukaddim, Aldi; Wirawan, Made; Alit, Ida Bagus
Dinamika Teknik Mesin Vol 3, No 2 (2013): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Clean water is a requirements of very important human life. Indonesia is a maritime country that has many islands surrounded by ocean, had a decreased clean water problem. One of the method to be used for obtain clean water is sea water distillation process. One of the most important tools is absorber distillation. occurs heat transfer from the absorber to the sea water causing, rising sea temperatures cause sea water to evaporate. The rising temperature of the sea water increases the amount of evaporation that occurs. The more the amount of evaporation generated will increase the number of fresh water produced. Increased seawater temperatures by increasing the temperature absorber, so it needs to be analyzed shape of the absorber which one can be produce more clean water than the others, a conclusion of the study indicated that solar distillation plat shape with a huge wave absorber produces more clean water than the others , the average amount of water that is more of 908 ml, compared with a small wave absorber plate only produce 764.4 ml  average a day and a flat plate absorber only produce 599 ml average a day, it is not independent of heat absorption by absorber, solar distillation plat shape with a huge wave absorber absorbs more heat than the other two absorber plates, this has resulted in solar distillation  shape with a huge wave  absorber plate  very well produce more water than the otehrs. 

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