DINAMIKA Jurnal Ilmiah Teknik Mesin
Jurnal Dinamika Teknik Mesin diterbitkan 2 (dua) kali setahun pada bulan Mei dan November dan telah diterbitkan sejak tahun 2009. Redaksi menerima karangan ilmiah tentang hasil penelitian, survei, dan telaah pustaka yang erat hubungannya dengan bidang keteknikkan khususnya bidang Teknik Mesin.
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<![CDATA[DESAIN OPTIMAL PONDASI MESIN BLOK TERTANAM AKIBAT BEBAN DINAMIS ]]>
<![CDATA[Minson Simatupang]]>;
<![CDATA[Sulha Sulha]]>;
<![CDATA[Izzat Arif]]>
<![CDATA[ Dinamika : Jurnal Ilmiah Teknik Mesin Vol 10, No 2 (2019) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin, Universitas Halu Oleo ]]>
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DOI: 10.33772/djitm.v10i2.6934
<![CDATA[Design of machine foundation is differed with design of other foundations in general. It retains not only static loads but also dynamic loads deriving from machine vibrations. The structure of the foundation must be able to support both of those loads without any failure. This study presents the optimal design of the embedded block machine foundation that it is not only safe to the operation of the machine itself but also it is not disturb the equipment or the people in the vicinity. The data used are the machine’s data according to the factory specification, the soil investigation data at the foundation site obtained using a ground drilling machine, and laboratory data. Field data are as N-SPT data, soil type for each layer, and groundwater table. Desain and dynamic responses analysis of foundation used elastic half space method, and modeling of soil settlement used palaxis sofware. By using trial and error method, it is obtained optimal dimension of the machine foundation with a length of 4.6 m, 2.5 m wide, 0.8 m high, and 0.6 m embedded foundation depth. With these dimensions, proposed foundation is reliable against the machine operation without interferences to the sorrounding environment.]]>
<![CDATA[BIOBRIKET KARBONISASI DARI CANGKANG METE DAN SEKAM PADI UNTUK ENERGI BERKELANJUTAN ]]>
<![CDATA[Lukas Kano Mangalla]]>;
<![CDATA[Abd. Kadir]]>;
<![CDATA[Kadir Kadir]]>
<![CDATA[ Dinamika : Jurnal Ilmiah Teknik Mesin Vol 10, No 2 (2019) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin, Universitas Halu Oleo ]]>
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DOI: 10.33772/djitm.v10i2.6930
<![CDATA[Indonesia - an agricultural country- has a large potential of biomass waste such as cashew nut shells and rice husks. Utilization of these materials can be an important source of alternative energy to support sustainable energy development. Several methods have been developed to optimize the utilization of this biomass throughout compacting processes at high pressures and temperatures as well as a material admixture. This study aims to investigate the energy potential of bio-briquettes from cashew nut shell charcoal and rice husks made of various pressures and materials admixture. The composition of briquette material consists of cashew charcoal (M) and rice husk (S) with a composition of 30/70 %, 50/50 % and 70/30% (mass base) with a constant adhesive of 15%. Each composition admixture was taken 5 grams to be compacting as briquettes. Bio-briquettes are made in cylindrical shapes with compacting pressures ranging from 50, 100 and 150 kgf /cm2. Combustion testing is carried out in solid fuel testing furnaces equipped with K-Type thermocouple and digital scales to measure the combustion temperature and combustion rate of the briquette mass when burned. The results showed that cashew charcoal shells and rice husks are very potential to be used as solid fuels which have a coal equivalent heating value. The larger the admixture of cashew nut charcoal in bio-briquettes the better the thermal properties derived, especially of combustion rate and temperature generated during combustion.]]>
<![CDATA[RANCANG BANGUN OVEN KUE DENGAN DUA SUMBER PANAS ]]>
<![CDATA[Muhammad Naim]]>;
<![CDATA[Aziz Asmauna]]>;
<![CDATA[Ika Surika]]>;
<![CDATA[Muh. Taufiq Mangkali]]>
<![CDATA[ Dinamika : Jurnal Ilmiah Teknik Mesin Vol 10, No 2 (2019) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin, Universitas Halu Oleo ]]>
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DOI: 10.33772/djitm.v10i2.6935
<![CDATA[Designing a cake oven with two heat sources is a study that aims to design and make cake ovens that can produce an oven that has heat spread evenly on each gutter, and the time and temperature of the oven can be adjusted according to needs. This study discusses about ovens made operated with a choice of 2 types of heat sources namely electricity and gas, gas as an alternative source of heat, maximum heating temperature of 120oC, research using library research methods and field research methods namely interviews and direct observation of oven use cake. Based on the research carried out the results of oven cake with 2 heat sources were obtained from the electrical element and from the gas stove. Based on the results of oven cake tests using electric heating elements obtained the temperature on chamfer one 112 °C, chamfer two 110 °C and chamfer three 105 °C. The test results using gas obtained temperature on gutters one 125 °C, gutters two 115 °C, and gutters three 120 °C. In the oven cake thermostats are added as readers of the temperature in the oven, thermocouple as a temperature sensor, timer as a roasting timer in the oven, and SSR (Solid State Rellay) as an automatic switch.]]>
<![CDATA[RANCANG BANGUN MESIN ROLLING ADONAN DENGAN PENGGERAK MOTOR LISTRIK DAN TUAS MANUAL ]]>
<![CDATA[Ichsan Ristiawan]]>;
<![CDATA[Jasman Jasman]]>;
<![CDATA[Irmansyah Irmansyah]]>
<![CDATA[ Dinamika : Jurnal Ilmiah Teknik Mesin Vol 10, No 2 (2019) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin, Universitas Halu Oleo ]]>
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DOI: 10.33772/djitm.v10i2.6931
<![CDATA[East Luwu is a developing district in the economic sector. One of them is a small micro medium business producing bread. Some bakeries still use simple equipment such as manual rollers. The bakery needs a machine that is able to produce flatbread dough with a larger amount, faster time, and the thickness of the bread dough can be adjusted. To support the bakeries, a bread dough peeler is needed to reduce the cost and time. In this study describe the literature study phase and data collection of demands with the parties involved, the design process, manufacturing and testing the machine. The engine drive consists of two modes, the manual crank rotation mode and the 3 phase electric motor mode (380 Volt) with 1390 rpm rotation passed through a two-level pulley-belt transmission system with a ratio of 16, so that it can produce 87 rpm of the roller rotation. Rolling Bread Dough Machine is capable of rolling or flattening bread dough with a thickness of 2 to 15 mm well. thicknesses of 1 to 1.5 mm still need improvement because it produces poorly bread dough and the dough sticks to the machine roller.]]>
<![CDATA[ANALISIS PERPINDAHAN PANAS PADA KOLEKTOR PLAT DATAR SEBAGAI SUMBER ENERGI TERMAL PADA PENGERING TIPE RAK ]]>
<![CDATA[Budiman Sudia]]>;
<![CDATA[Lukas Kano Mangalla]]>;
<![CDATA[Samhuddin Samhuddin]]>;
<![CDATA[Wa Ode Zulkaidah]]>
<![CDATA[ Dinamika : Jurnal Ilmiah Teknik Mesin Vol 10, No 2 (2019) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin, Universitas Halu Oleo ]]>
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DOI: 10.33772/djitm.v10i2.6936
<![CDATA[Solar collectors are devices that convert solar radiation energy into thermal energy which is used for various purposes. This study is used to determine the heat in the flat plate collector as a source of thermal energy. Data collection was carried out at Kambu, Kendari City with a latitude of 40 LS, in May 2018. The intensity of solar radiation measured using solar power meter : collector temperature measured using a thermocouple type CC (Cooper Constanta), wind speed measured using anemometer, the ambient temperature uses a mercury air thermometer. The Results show that the maksimum useful energy was 100, 09 W (Qu.act) and 182,01 W (Qu.teo) ; maksimum efficiency was 36,54 (hact ) and 77,2 % (hteo).]]>
<![CDATA[DESAIN MESIN PEMARUT KELAPA DAN UBI KAYU DENGAN KOMBINASI ROL PARUT ]]>
<![CDATA[Nanang Endriatno]]>;
<![CDATA[Kadir Kadir]]>
<![CDATA[ Dinamika : Jurnal Ilmiah Teknik Mesin Vol 10, No 2 (2019) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin, Universitas Halu Oleo ]]>
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DOI: 10.33772/djitm.v10i2.6932
<![CDATA[This study aims to determine the safe shaft and to design a model of cassava and coconut grated machines. In this study, the grated machine was designed using Autodesk Inventor 2017. The material used for the shaft is carbon steel (S45C) with a tensile strength of 58 kg/mm2. The shaft calculation results show that the plan power is 4.0425 KW, torsional moment or torque at shaft speed 2670 rpm is 5124,955 kg.mm, and permissible shear stress is 4.83 (kg/mm2), and shaft diameter is 21 mm, while the shear stress is obtained at 2.823 kg/mm2. From the above results, it can be seen that the shear stress value that occurs is smaller than the permissible shear stress value (t<ta) where ta = 5,5 kg/mm and the value t = 2.823 kg/mm2, so it can be concluded that the shaft size planned safe. in this study, the design of the grated machine uses two different grated rollers for cassava and coconut. The pulp used is 4 pieces and grated rollers can be moved simultaneously or just one grated roller.]]>
<![CDATA[ANALISA MATERIAL CRYSTALINE SILICON WAFER SOLAR CELL DENGAN MENGGUNAKAN TYPE DRY MACHINES ]]>
<![CDATA[La Hasanudin]]>;
<![CDATA[Al Ichlas Imran]]>;
<![CDATA[Agustinus Lolok]]>;
<![CDATA[Aminur Aminur]]>
<![CDATA[ Dinamika : Jurnal Ilmiah Teknik Mesin Vol 10, No 2 (2019) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin, Universitas Halu Oleo ]]>
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DOI: 10.33772/djitm.v10i2.6933
<![CDATA[The Photovoltaic (PV) industry is one of the renewable energy segments, and electricity generation from photovoltaics (solar cells) is considered one of the key technologies of the century in the future. Photovoltaic solar electricity presents an elegant way to generate electricity, because there are no movements that damage the environment, namely: zero emissions, and no noise. This study aims to determine the efficiency analysis of making Crystaline Silicon by using type dry machines. The method that is carried out is the manufacture of Crystanesilicon by using type Dry machines. Produce nano wire devices that provide efficiency above 5%, with short photocurrent circuits higher than planar control samples. Thickness The thickness of the Si wafer depends on its diameter for reasons of mechanical stability during production and further processing, and about 279 μm (for wafers in diameter 2 inches), 379.5 μm (3 inches), 524.5 μm (4 inches), 674.5 μm (6 inches) and 724.5 μm (8 inches).]]>
<![CDATA[ANALISIS PENGARUH VARIASI TEMPERATUR BAJA AISI 1018 TERHADAP KEKERASAN DENGAN METODE JOMINY TEST ]]>
<![CDATA[Harjuma Harjuma]]>;
<![CDATA[Simon Parekke]]>
<![CDATA[ Dinamika : Jurnal Ilmiah Teknik Mesin Vol 10, No 2 (2019) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin, Universitas Halu Oleo ]]>
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DOI: 10.33772/djitm.v10i2.6954
<![CDATA[Hardenability of steel is an important guide to determine the pattern of heat behavior and the nature of the material to be heat-treated in the production of components. One way to determine steel hardenability is by using Jominy test method. This study aims to determine the hardness of the AISI 1018 steel by varying temperature in heat treatment. Hardness test was conducted using the Rockwell method (HRA) by varying the heating temperature to 700 °C, 800 °C and 900 °C. The material used was AISI 1018 steel and water as a cooling medium. The standard for making specimens refers to the ASTM A 255 Jominy Test with the following dimension: length of specimen 101.6 mm x diameter of specimen 25.4 mm. Electric heating furnace was used to heat the specimen according to the desired temperature. After a 15-minute holding time, the specimen was then cooled in clean water as cooling medium using Jominy test apparatus. Each specimen was cooled by spraying clean water onto it for 10 minutes. The results showed that the maximum hardness value occurred at the end of the specimen closest to the center of the spray and that the hardness decreased as the distance from the tip of the specimen increased. The results also showed that the higher the given heating temperature, the higher the hardness value of the specimens. However, the increase in temperature does not have a significant effect. This was probably the result of improper selection of materials where the heat treatment requires that the specimen contains more than 0,3% carbon. The specimen was too long on the air when released from the furnace. Hardness of test results obtained at temperature at a heating temperature of 700 ° C the average hardness value was 48.72 kg / mm2, at a temperature heating of 800 ° C the average hardness value was 47.44 kg / mm2 and at a heating temperature of 900 ° C the average hardness value was 48.12 kg/mm2. ]]>
