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Jurusan Teknik Mesin, FT, Universitas Mataram, Jl. Majapahit no. 62, Mataram, NTB, 83125, Indonesia
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INDONESIA
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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PENGARUH KECEPATAN ANGIN DAN VARIASI JUMLAH SUDU TERHADAP UNJUK KERJA TURBIN ANGIN POROS HORIZONTAL Aryanto, Firman; Mara, Made; Nuarsa, Made
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 3, No 1 (2013): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (354.604 KB)

Abstract

The wind turbine is a device that converts wind energy into mechanical energy and then converted into electrical energy through a generator. Horizontal axis wind turbines can increase the efficiency to get the maximum power coefficient. One was using the blade numerous. Maximum efisiensi system will increase the number of watts (power) generated so as to obtain a certain number of watts by simply using the number of windmills lessThe object of this research is the performance testing horizontal axis wind turbine with wind speed variation and variation in terms of the number of blade Efisiensi system (???? )  and Tip Speed Ratio (TSR). Research conducted with the wind coming from the source to the Wind Tunnel fan to direct wind. Wind speed is used there are three variations of the 3 m/s, 3.5 m/s, and 4 m/s and varying the amount of blade that is 3, 4, 5 and 6 blade.The results showed that the best ????  values obtained at a maximum wind speed of 4 m / s and the number of blade 5 with a value of 3.07% ????, whereas ???? smallest value obtained at wind speeds of 3 m/s and the number of blade 3 that the value of 0.05% ????. For TSR maximum value at a maximum speed of 4 m/s occurred in the number of blade 5 is equal to λ = 2.11, while the lowest value at wind speeds of 3 m/s resulting in blade number 3 is equal to λ = 1.49.
PENGARUHORIENTASI DANFRAKSI VOLUME SERAT DAUN NANAS (ANANAS COMOSUS)TERHADAP KEKUATAN TARIK KOMPOSIT POLYESTERTAK JENUH(UP) Paryanto Dwi Setyawan; Nasmi Herlina Sari; Dewa Gede Pertama Putra
Dinamika Teknik Mesin Vol 2, No 1 (2012): Dinamika Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Composite manufacturing is done by hand lay-up method with a fiber volume fraction 10%, 20%, 30%, and 40% with unidirectional and random short fiber orientation of pineapple leaves. Specimen testing is performed with a standard tensile strength test ASTM D3039. As a results is known that the tensile strength of composites increased with increasing fiber volume fraction for unidirectional fiber orientation, but rather to the random orientation of short fibers. Meanwhile, the composite tensile strain increases withincreasingfibervolume fractionfor both theorientation of thefibersof pineappleleaves.
PERBANDINGAN KONDUKTIVITASTEMBAGA, BAJA DAN ALUMINIUM Mulyanto, Arif
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 1, No 1 (2011): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

The heat transfer is important in engineering field and aspects of the life. Many equipment was made by using principles of the heat transfer, like: the oven, iron, the car machine, the muffler, the room cooler et cetera. The principle of the work in the research, there was the heat source at the upper side and the sink (heat remover) at the bottom side so that the temperature different ( was significant) along metal that was tested. The heat source from the electric heater,the object the test togethered with his heater all was isolated. The test object consisted aluminum with 20 mm2 cross section area, the steel and copper have 10 mm2 cross section area. The results that that the conductivity of copper was biggest were followed with aluminum and finally the steel.
Analisis numerik karakteristik intensitas suara gending Jawa N. Finahari; G. Soebiyakto
Dinamika Teknik Mesin Vol 7, No 1 (2017): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1085.005 KB) | DOI: 10.29303/dtm.v7i1.2

Abstract

The use of Javanese Gending as music therapy is conducted by the method of stereo playback. With reference to that flow into the voice information left and right ears are different but ended in the same area, it is necessary to an understanding of the response mechanisms that emerged from each of the groove and the existence of interactions. Overview of acoustic parameter response interaction right brain hemisphere and the left brain are manifested in the form of a mathematical equation. This study aims to formulate sound characteristic of Javanese music in numerical form, as a sound source of the study. In this case, the numerical model obtained will be used as the excitation force vibration system that enters the auditory system.
Modified atmosphere storage (mas) buah pisang Wina Libyawati; I Gede Eka Lesmana; A. Raynold; Hafidan Agustian; L. Mahardhika
Dinamika Teknik Mesin Vol 7, No 2 (2017): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1086.007 KB) | DOI: 10.29303/dtm.v7i2.159

Abstract

Healthy life style based on natural food consumption, has been implemented by the society to increase health quality. Minimally processed technology is used to slow down food decay time in the storage room. Minimally processed techology is consist of Controlled Atmosphere Storage (CAS), Modified Atmosphere Storage (MAS), Freeze Driying, and blansir. MAS is food storage technology by conditioning the air composition (especially oxygen level). Banana is an object of MAS implementation, due to its all session fruit and shorter life time. Previous MAS studies used long bean as the object and managed to improve the life time until 15 days.The purpose of this study is to implement MAS to lengthen banana life time. MAS design use Ulrich Eppinger method. Simulation of Turbulance Kinetic Energy (TKE) in the sparger and MAS installation use ANSYS 16.2. The experimental to test sparger and installation is conducted for 6 hours for the sparger and 24 hours for the installation. Afterward the correlation between parameter is calculated by using least square method. The outcome of this  research is MAS for banana in order to be used by SME with capacity of 4.77 m3, mixture time is 24 hours, TKE number in the sparger is 582.6448 J/kg, TKE number in the installation is 715.6 J/kg, oxygen level in the sparger is 5.7%, oxygen level in MAS installation is 8.5%, glucose of banana located in the storage room is 9.5%, and banana life time able to achiave 14 days. 
PENGARUH DEBIT TERHADAP UNJUK KERJA ALAT PENUKAR KALOR DAN PENURUNAN SUHU RUANGAN Mirmanto, Mirmanto; Sayoga, I Made Adi; Zulkarnain, Zulkarnain
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan 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 | Full PDF (644.378 KB) | DOI: 10.29303/dtm.v6i1.18

Abstract

ABSTRACTDue to population growth, industry advance and rapid development, fresh and comfortable air may be difficult to get. Conditioning the air to get comfort environment may be a basic demand for people, but the prices of the device and its operation for this purpose are expensive. This research tries to solve this problem but it is just only to know the capability of the heat exchanger  to transfer/ absorb heat and is not to cool the room to be below the ambient temperature. The working fluid used was clean water and the heat exchangers employed were parallel and serpentine which were made of copper pipes with a diameter of 1/4 inch and 1/2 inch (for the header). The volumetric flow rates used were 300 ml/minutes, 400 ml/minutes and 500 ml/minutes. While the heat that should be absorbed by the water from the room is 50 W, 100 W and 150 W. The results show that the effect of volumetric flow rate on heat exchanger performance and room temperature is insignificant. From the pressure drop results, the parallel pipe heat exchanger has lower pressure drops while the serpentine has higher pressure drops. 
KAJIAN TEKNO EKONOMI UNIT ALAT PENCACAH PLASTIK UNTUK MENINGKATKAN NILAI JUAL SAMPAH PLASTIK: STUDI KASUS-UD. SARI PLASTIK LOMBOK TIMUR, NTB I Made Suartika; Made Wijana; Muhamad Sudrajadinata
Dinamika Teknik Mesin Vol 5, No 2 (2015): Dinamika Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Processing plastic waste in East Lombok mostly just collect plastic waste processing and then sent to the city in its original form. If the plastic waste is processed by applying plastic shredded units or chopper machine technology, the sale value of the plastic waste will be increased. This study describes to determine of feasibility technical and economic aspects to apply the plastic shredder units. The method used in this study is quantitative method in which the author will be a number of data collection is needed in relation to the issues to be examined, so that the research results can be trusted and relied upon the truth. The results of the study found that the engine performance in terms of the efficiency of each stage of the production process of shredded plastic. To purchase process stages, sorting, drying, packaging, and selling obtained an efficiency of 0.938, while the efficiency of the shredding process is 0.906. Furthermore, to obtain a production capacity of 1230.01 kg/day processing owners must buy raw materials 1588.34 kg/day by the number of machines required 2 units of 3 units of existing plastic shredder. So based on the feasibility analysis in terms of the value of BEP, obtained at 29092.03 kilogram production capacity, with a total cost of Rp 176,424,168.75, NPV Rp 113,545,038.34 (>0) and Net B/C ratio of 1.79 (>0) otherwise feasible. By optimizing the engine to 3 units obtained BEP value equal to the NPV Rp 385.139.485,25 (>0) and Net B/C ratio of 4.01 (>0). From the analysis of the value of shredded plastic BEP selling price is higher than the selling price of plastic intact from Rp 3,531/kg into Rp 6.064,35/kg.
ANALISA UNJUK KERJA MOTOR BAKAR BERBAHAN BAKAR BIOGAS TERMURNIKAN BERBASIS ABSORBER Fe2O3 Sutanto, Rudy; Alit, Ida Bagus; Nurchayati, N.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan 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 | Full PDF (168.439 KB) | 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
Sampaul Dinamika Teknik Mesin January 2013 Dinamika Dinamika
Dinamika Teknik Mesin Vol 3, No 1 (2013): Dinamika Teknik Mesin
Publisher : Universitas Mataram

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Abstract

Sampaul Dinamika Teknik Mesin January 2013
Pengaruh jumlah haluan pipa paralel pada kolektor surya plat datar absorber batu kerikil terhadap laju perpindahan panas M. Wirawan; R. Kurniawan; Mirmanto Mirmanto
Dinamika Teknik Mesin Vol 6, No 2 (2016): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (814.524 KB) | DOI: 10.29303/dtm.v6i2.16

Abstract

Recently the use of energy increases. It leads to the energy crisis. Therefore, it is important to promote alternative energy (renewable energy). One of renewable energies, which is potential in Indonesia, is solar enrgy. Solar energy can be harvested using a solar collector. This device can collect or absorb solar radiation and convert it to thermal energy. In this study, two identical collectors are used. One collector consists of 7 pipes and the other comprises 9 pipes. The overall dimension of the collector is 100 cm x 80 cm x 10 cm and the absorber of the collector is made of gravels with a mesh size of 9.5 -12.5 mm. The collectors are placed with a slope of 15o facing to North. The volumetric rates of water used in the experiments are 300 cc / min, 350 cc / min and 400 cc / min. The results show that the collector with 9 pipes is better than that with 7 pipes.

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