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<![CDATA[Design of Coconut Paring Machine ]]>
<![CDATA[Karnova Yanel]]>
<![CDATA[ Jurnal Teknik Mesin (JTM) Vol 8, No 1 (2018) ]]>
Publisher : <![CDATA[LP2M - Institut Teknologi Padang ]]>
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<![CDATA[Coconut plant is a very useful natural resource for human life. One of the benefits of coconut plant is coconut is a raw material that can be processed fresh drinks. In general, the process of peeling coconut still using the manual process so it takes a lot of energy, a long time, and a sharp tool to peel the coconut, to overcome this need a design of a more efficient young coconut peeler, this machine is designed using cheaper materials so that can be reached by all people especially who have business of coconut sales. Coconut peeler is a working principle of rotary system, the coconut to be peeled is placed on top made specifically for the coconut holder and to ensure the coconut does not fall during peeling process, the coconut is retained using a lever that serves as a lock. The driving force used is the electric motor, power on the electric motor will be forwarded from the pully motor rotation through v-belt to the pulley driven. From this research has been obtained model of machine design to peel coconut coir, coconut coir peel machine which is designed can peel coconut husk within 2 minutes for 1 coconut, with the highest efficiency value which is worth 93.5%]]>
<![CDATA[Hardness Test on the Alloy Fe-50%atAl With the Addition of Nickel Using Mechanical Alloying Method ]]>
<![CDATA[Abrini, Dona]]>;
<![CDATA[Ardhy, Sanny]]>;
<![CDATA[Putra, Haznam]]>
<![CDATA[ Jurnal Teknik Mesin (JTM) Vol 7, No 1 (2017) ]]>
Publisher : <![CDATA[LP2M - Institut Teknologi Padang ]]>
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<![CDATA[Hardness test on the alloy Fe-50% at Al with the addition of nickel were prepared by mechanical alloying method. The powder mixture Fe-50at.%Al with the variation adding 0,5at.%Ni, and 2at.%Ni are grinded using High Energy Milling HEM E-3D in Argon condition for 10 hours. To determine the hardness, conducted to take the sample with the certain time duration to each composition. Then, the sample which has been taken is characterization using hardness. The results showed that the highest hardness properties exist in the alloy Fe-50% at Al-0.5% at Ni, amounting to 161.53 HV. The addition of nickel on alloy reduces the hardness properties of the alloy. However, the addition of nickel require a short time to raise the hardness properties.]]>
<![CDATA[Experimental Study of Heat Pipe for Solar Collector Heater ]]>
<![CDATA[Wahyu, Dian]]>
<![CDATA[ Jurnal Teknik Mesin (JTM) Vol 6, No 1 (2016) ]]>
Publisher : <![CDATA[LP2M - Institut Teknologi Padang ]]>
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<![CDATA[Heat pipes with a size of 0.0127 m diameter x 1.3 m lenght x 0.0008 m thick and absorber with a size of 1m length x 0.1 m width has been created and tested to be used as a solar collector heating element. Heat pipes are made using water as the heat transport medium and using a stainless steel mesh wick 120 as a tool that helps accelerate the flow of condensate inside the heat pipe. Testing of heat pipes will be do in two condition at an inclination of 30o , before the heat pipes selected as the heating element in the solar collector. Testing of heat pipe on the first condition is done by using 1,000 ml of hot water temperature of 100oC with the power supply of 20 watts as a heat source in the evaporator side and further testing of pipe heat was tested by direct solar radiation, this test is intended to see directly if heat pipe was made able to work in conditions that are expected. Tests are done to see the heat transfer capacity and response speed (τ) of the heat pipe. Based on testing obtained the fastest response in the heat pipes transfer of the heat contained in the filling ratio of 20% with the heat transfer efficiency of 75%.]]>
<![CDATA[Optimization of Injection molding Parameters using the Taguchi Method to Maximize Biocomposite Material Tensile Strength ]]>
<![CDATA[Sufiyanto Sufiyanto]]>
<![CDATA[ Jurnal Teknik Mesin (JTM) Vol 7, No 2 (2017) ]]>
Publisher : <![CDATA[LP2M - Institut Teknologi Padang ]]>
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<![CDATA[This research explained a study for optimization of parameters process on the injection molding biocomposite material, which is a mixture of plastics and natural fibers. Natural fibers used is rice husk (RH) mixed with polypropylene (PP) and maleic anhydride polypropylene (MAPP). The biocomposite molded into tensile specimens ASTM D638-03 using the injection molding machine. The varied of injection molding is the parameters process, that are divided into 4 parameters and each consists of 3 levels, then be done tensile tests on specimens. Optimization performed using the Taguchi method with orthogonal matrix design L27(313). The maximum tensile strength of biocomposite were barrel temperature of 210°C, injection pressure of 55 bar, holding pressure of 40 bar, and injection velocity of 75 mm/sec]]>
<![CDATA[Design and Manufacturing of Soybean Epidermis Peeler Machine ]]>
<![CDATA[Romiyadi Romiyadi]]>;
<![CDATA[Yudi Dwianda]]>
<![CDATA[ Jurnal Teknik Mesin (JTM) Vol 9, No 1 (2019) ]]>
Publisher : <![CDATA[LP2M - Institut Teknologi Padang ]]>
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<![CDATA[The soybean epidermis peeler machine was a machine used to peel of soybean epidermis from the soybean. The purpose of the study was to design and manufacture of soybean epidermis peeler machine with a capacity of 3 kg for a process. In this study, the soybean epidermis peeler machine was designed and manufactured with uses 2 shaft to peel the soybean epidermis from the soybean. From the process of designing and manufacturing, has produced a soybean epidermis peeler machine with a capacity of 3 kg for a process. The machine uses a electric motor with a power of 0.5 HP. The transmission system uses pulley transmission between electric motor with 1st shaft and uses sprocket and gear transmission between 1st shaft and 2nd shaft.]]>
<![CDATA[Designing and Manufacturing of Meat Grinding and Meatball Dough Blending Machine ]]>
<![CDATA[Romiyadi Romiyadi]]>;
<![CDATA[Indah Purnama Putri]]>
<![CDATA[ Jurnal Teknik Mesin (JTM) Vol 7, No 1 (2017) ]]>
Publisher : <![CDATA[LP2M - Institut Teknologi Padang ]]>
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<![CDATA[The purpose of the study was to design and manufacture of meat grinding and meatball dough blending machine with a capacity of 6 kg. In this study, researchers add more functions on meat grinding to meatball dough blending machine. From the process of designing and manufacturing, has produced a meat grinding and meatball dough blending machine with a capacity of 6 kg for a process. The machine uses a electric motor with a power of 0.25 HP. Based on the test results, meat grinding and meatball dough blending machine was able to meat grinding and meat ball dough blending and has efficiency of 96 % for the meat grinding process and 95 % for the meatball dough blending process.]]>
<![CDATA[Characteristics of the Mixed Crude Jatropha Oil-Clove Oil ]]>
<![CDATA[Gamayel, Adhes]]>
<![CDATA[ Jurnal Teknik Mesin (JTM) Vol 6, No 2 (2016) ]]>
Publisher : <![CDATA[LP2M - Institut Teknologi Padang ]]>
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<![CDATA[Crude jatropha oil (CJO) composed by triglycerides that consist of fatty acid and glycerol. CJO has high viscosity and low evaporation rate that cause ignition delay and imperfect combustion. Blending with lower viscosity and more volatile fuel can reduce it. In this study, CJO blend with clove oil (CO) in percentage of 5%, 10%, 15% and 20%. The physical properties: viscosity, heating value, and flash point were measured with international standard method (ASTM). The result indicates that more percentage of clove oil causes viscosity and flash point reduce while heating value increase. There is because molecular interaction between eugenol and triglyceride makes oscillation of molecule more active than before.]]>
<![CDATA[Effect of Particles Size on EFB Bio-briquettes of Calorific Value ]]>
<![CDATA[Nofriady Handra]]>;
<![CDATA[Anwar Kasim]]>;
<![CDATA[Gunawarman Gunawarman]]>;
<![CDATA[Santosa Santosa]]>
<![CDATA[ Jurnal Teknik Mesin (JTM) Vol 7, No 1 (2017) ]]>
Publisher : <![CDATA[LP2M - Institut Teknologi Padang ]]>
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<![CDATA[The development of biomass has been assumed as an important issue in the past several decades and would remain to be attractive in the future due to its clean, renewable, and carbon–neutral properties. Biomass is one of the most important renewable energy resources in the world. In recent decades, the utilization of biomass has dramatically increased. The objective of this research was to knowing effect of particles size on EFB bio-briquettes of calorific value. There were many reasons. First, biomass is a renewable resource, because of the availability of biomass is unlimited, and its regenerative process runs well. Second, the extraction of biomass energy can be carried out more flexibly. The biomass can be burned directly without high technology. Biomass bio-briquettes are often used as an energy source for cooking purpose and in some industries. The 2% (dry basis) is used as a binder in a mixture with EFB fibre. Samples of solid cylindrical shape Ø 4 cm and 6 cm high and density sample is 0.8 gr/cm2. The pressure is used to generate samples specified in the mold volume. The volume of the cylinder is 75.36 cm2. The particle size briquette of 40 mesh average water content of 9.1% was generated while the size of 60 mesh was 9.5%. The particle size of 60 mesh (smooth) yields the highest value between 20 mesh and 40 mesh. The value of ash content generated by 4.35% is higher than the size of 20 mesh (2.88%) and 40 mesh (3.09%). On the particle size of 20 mesh fibers (more roughly), it yields a calorific value of 4237.5 kal /gr and is higher than 40 mesh fiber particle size (4102.2 kal/gr) and 60 mesh (4066.5 kal/gr). The difference in heating value produced by the three did not show any significant difference.]]>
<![CDATA[Strength Analysis of Betelnut Fiber-Reinforced Resin Composite ]]>
<![CDATA[Fahmi, Hendriwan]]>;
<![CDATA[Hadi, Syafrul]]>;
<![CDATA[Kapur, Fajar Marda]]>
<![CDATA[ Jurnal Teknik Mesin (JTM) Vol 6, No 2 (2016) ]]>
Publisher : <![CDATA[LP2M - Institut Teknologi Padang ]]>
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<![CDATA[Material is needed in life, the material itself is used aims to facilitate human activities, in the development of modified human material in various ways, one of which composite materials. Composite is a combination of two or more elements that get combined properties of the elements combined. Liquid Epoxy resin is a low molecular weight organic group containing epoxide. The composite material used is a fiber reinforced resin nut shell. Point of this study is know tensile strength of fiber nut shell composite, variations in the composition of the epoxy resin and fiber nut shell made in this study was 90:10%wt, 80:20%wt, and 70:30%wt, fiber length of 2 cm with random fiber orientation. This experiment is the tensile test. Tensile test was conducted to determine the tensile stress each - each composition, the standard used is ASTM 638 02. From the test results obtained on the composition of the composite tensile strength of 90: 10% wt is 9.8 MPa, the composition of 80: 20% wt was 13.06 MPa and the composition of 70: 30% wt is 14.04 MPa. Of the fracture surface can be seen that the fibers are well distributed and the bond between resin and fiber is also more evenly so that the tensile strength increased.]]>
<![CDATA[Thermal Shock Resistance of Epoxy Reinforced Fiber Betel Nut Against the Strength of Bending and Impact Energy ]]>
<![CDATA[Hendriwan Fahmi]]>
<![CDATA[ Jurnal Teknik Mesin (JTM) Vol 8, No 1 (2018) ]]>
Publisher : <![CDATA[LP2M - Institut Teknologi Padang ]]>
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<![CDATA[The development of material engineering technology is now beginning to experience an increase in the utilization of natural fibers as a reinforcement in composites. The purpose of this research is to know the effect of thermal shock on bending strength and impact matrix of epoxy with betel fiber. In this study used betel fiber with a length of 1cm and epoxy resin matrix. Matrix and reinforcement composition 30%: 70% v, pinewood was soaked with 30% NaOH for 30 minutes. The composite was heated at a temperature of 1000C for 1 hour, then dipped into water with a variation of 10.15,20 cycles. Bending and impact testing based on ASTM 790 and ASTM D-265. The results showed that the highest bending strength was obtained at the thermal shock of 10 cycles of 76.75 N / mm2 and the lowest at 20 cycles of 48.26 N / mm2. At impact test at get biggest impact energy obtained at thermal shock 10 cycle that is 0,756 J and the smallest at 20 cycle that is equal to 0,060 J. This result show that bigger cycle at thermal shock hence composite strength will decrease.]]>
