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"Vol 11 No 2 (2016): Jurnal Teknik Mesin Indonesia"
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<![CDATA[Pengaruh laju aliran coolant campuran air dengan ethylene glycol terhadap laju perpindahan panas dan penurunan tekanan radiator otomotif ]]>
<![CDATA[Bernadus Nanang Dwi Nuryanto]]>;
<![CDATA[Tri Istanto]]>;
<![CDATA[Wibawa Endra Juwana]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol 11 No 2 (2016): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v11i2.56
<![CDATA[This experimental study was conducted to examine the heat transfer rate and pressure drop on corrugated louver fin with triangular channel radiator. Radiator tube and fin were made of aluminium. Cold fluid flows verticaly from top side to bottom while air flows horizontaly (crossflow heat exchanger). Water and 20% Ethylene glycol were used as hot fluid (coolant) and maintained at constant temperature of 80 oC and varied at flow rate of 25 lpm, 30 lpm, 35 lpm, dan 40 lpm. Where as air was used as cold fluid having its velocity varied at 1.5 m/s, 2 m/s, 2,5 m/s and 3 m/s. And air intake temperature was maintained around 30 oC. The result shows the higher water flow rate in the radiator tube, resulting in higher value of heat transfer rate, and coolant pressure drop. Ethylene glycol mixing composition into the coolant, affects on decreasing the heat transfer rate. The highest heat transfer rate enhancement was obtained at water coolant usage. Ethylene glycol mixing affects the increasing coolant-side pressure drop.]]>
<![CDATA[Pengaruh plunge depth dan preheat terhadap sifat mekanik sambungan friction stir welding polyamide ]]>
<![CDATA[Budy Nugroho]]>;
<![CDATA[Triyono .]]>;
<![CDATA[Nurul Muhayat]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol 11 No 2 (2016): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v11i2.57
<![CDATA[Friction stir welding is a joining method that utilizes heat caused by the friction between workpiece material and pin. It employs several parameters such as tool rotational speed, welding speed, and plunge depth. The objective of this research is to investigate the effect of plunge depth and preheat on the mechanical properties of friction stir welding polyamide materials. This research used the plunge depths of 5.6 mm, 5.65 mm, 5.7 mm, and 5.75 mm. The parameters maintained to be constant were tool rotational speed of 620 rpm, welding speed of 7.3 mm/minutes, and tool tilt angle of 20. Preheat of 1700C was done as well non preheat method to compare of both methods.The maximum tensile and bending strength was obtained at the tool plunge depth of 5.7 mm with preheat. The value of maximum tensile and bending is 27,3 Mpa, and 75,7 Mpa. The optimization of tool plunge depth and preheat made the stirring better so that the molten material could spread all over weld region. The spreading of the molten material minimized void or defect in the weld region. As a result, the mechanical characteristic of joint increased.]]>
<![CDATA[Analisa Pengerjaan Tirus terhadap Permukaan Benda Uji Bahan S45C Dari Variasi Putaran dan Sudut Potong Mesin Bubut Krisbow KW 15-604 ]]>
<![CDATA[Sobar Ihsan]]>;
<![CDATA[Budi Hartadi]]>;
<![CDATA[Verriyanto .]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol 11 No 2 (2016): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v11i2.64
<![CDATA[Tapered turning advantages various forms of objects with different angles of tape according to the production process. In the lathe machine, tapered turning can be done in three ways: sliding the top, headlights loose and taper attachment (taper attachment). The goal to be achieved in this study is to know the difference in the influence of variation of rotational speed Krisbow KW15-604 lathe against the smoothness of the surface of the workpiece resulting from the thinning of the material, Knowing the difference of the effect of cutting chisel angle variation to the smoothness of the surface of the workpiece resulting from the tapered turning on the material and knowing the interaction between the variation of Krisbow KW15-604 turning speed and angle cutting the chisel to the smoothness of the surface of the workpiece resulting from a tapered lathe on the material S 45C C = 47.4%, Si = 14.2%, Mn = 1.585%, Cr = 13.5%. The results of data analysis showed that there is a very significant influence between the variation of turning speed of the lathe and the variation of cutting chisel angle to the surface of the tinfoiled working object on S45C material. This can provide an overview of the metal and machinery industry in improving the quality of its products at the level of the surface in accordance with the wishes of consumers and the use of tapered products as for binding sealing on the engine of general.]]>
<![CDATA[Rancang bangun sistem rem anti-lock brake system (abs) dengan penambahan komponen vibrator solenoid ]]>
<![CDATA[zakaria .]]>;
<![CDATA[Wibowo .]]>;
<![CDATA[Wibawa Endra Juwana]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol 11 No 2 (2016): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v11i2.59
<![CDATA[This study aims to analyze the vibration of the braking system equipped by solenoid vibrator component arranged with a control system to produce an ABS effect. Data collection is done by using slam stick. The results showed that the frequency domain signal with the addition of the solenoid vibrator component had peaks at 10 Hz frequency, while the frequency domain signal during braking without the addition of the solenoid vibrator component there were no peaks at 10 Hz frequency. From the data, the ABS braking system works in accordance with the ABS braking system that provides 10 Hz signal.]]>
<![CDATA[Analisa pengaruh fraksi massa penguat sio2 terhadap kekuatan impak dan struktur mikro pada komposit matrik aluminium menggunakan metode stir casting ]]>
<![CDATA[Grahardian Adi Kusumo]]>;
<![CDATA[Purwadi Joko Widodo]]>;
<![CDATA[Wahyu Purwo Raharjo]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol 11 No 2 (2016): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v11i2.53
<![CDATA[AMC (Aluminium Matrix Composite) using stir casting method is one of the best way to get superior material. This research is to find out the mass fraction influence of reinforcement SiO2 to impact strength and micro structure on aluminium matrix composite. On this research, mass fraction of reinforcement varied between 3%, 6% and 9%. The making of composite use stir casting method. Specimen test is using optics microsope and impact charpy testing machine. The result of research show that increasing SiO2 can increase the impact strength. The highest impact strength happened at specimen 9% mass fraction of SiO2 (0,363 J/mm2). Observation of micro structur show good bonding between reinforcement and matrix on composite.]]>
<![CDATA[Pengaruh waktu pengepresan terhadap sifat mekanik komposit kenaf / polypropylene ]]>
<![CDATA[Sahid Bayu Setiajit]]>;
<![CDATA[Heru Sukanto]]>;
<![CDATA[Wijang Wisnu Raharjo]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol 11 No 2 (2016): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v11i2.60
<![CDATA[Natural fiber composite is the one of eco friendly composite. Natural fiber such as jute, banana,rosella, rami and kenaf are able tobe a good reinforcement material for thermoset or thermoplast composite. Composit using natural fiber reinforcement can be upgraded by adding more pressing time in the forming process. The aim of this research is to investigate the influence of pressing time adding variation towards mechanical properties of mat composite of kenaf- PP fiber. Mat composite of kenaf- PP fiber is processed by using simple hot press method. The temperature used in the pressing process is 180 0C with 7bar of pressure. The variation of pressing time are 5, 10, 15, 20,25 minutes. Mechanical properties that have been tested are tensile, bending, impact and density. The facture of the composite is observed using scanning electron microscopy (SEM). The 25 minutes pressing time variation resulting the bending and tensile strength of mat composite of kenaf- PP fiber respectively : 39,37 MPa and 25,27 Mpa. The highest impact strength is 20,25 kJ/m2 from 5 minutes of variation of pressing time.]]>
<![CDATA[Redesign runner turbin pembangkit listrik tenaga pico hydro dengan metode reverse engineering melalui pendekatan teoritis ]]>
<![CDATA[Abdillah Zuhud]]>;
<![CDATA[Sukmaji Indro Cahyono]]>;
<![CDATA[Dominikus Danardono Dwi Prija Tjahyana]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol 11 No 2 (2016): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v11i2.54
<![CDATA[Remote area is a geographically isolated area which has a very low accessibility. Most of its area has a low level both population and electrification due to its accessibility is so far from National power grid. The electrical problem in remote area can be solved by building a Pico hydropower. One of the important components of Pico hydro is a runner turbine. Based on theoretical design process that refers to the fixed variable flow rate 25 l/s, head 2 m and number of turbine rotation 1500 rpm then to be obtained outer diameter runner turbine propeller is 0,103 m, hub diameter is 0,515m, number of blade is 4 with flat blade profile, hydraulic efficiency is 76% and it is targeted to raise 490 Watt electrical power.]]>
<![CDATA[Perancangan sistem pembangkit kogenerasi pada pabrik gula kapasitas 4.000 tcd, studi kasus revitalisasi pabrik gula modjo sragen ]]>
<![CDATA[Ari Wibowo]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol 11 No 2 (2016): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v11i2.61
<![CDATA[The sugar industry is an industry that supplies its own energy, in which energy is generated from burning biomass in the form of bagasse to produce electricity and steam. This system is referred to as a cogeneration system, meaning the generation of two different forms of energy together from one main energy source. By designing the right generating system, sugar mills have the potential to generate electrical energy greater than the internal requirement, so the excess power that can be transfered into PLN electricity network. The purpose of this research is to design the equipment in cogeneration steam generation system with reference to the energy potential contained in bagasse. The results showed by calculation and design of equipment, the energy potential from the bagasse of 381.818.182 kJ / hour which can produce steam in the boiler as much as 100.000 kg / hour at a pressure of 45 barg 400oC. Than the turbine and generator can convert into electrical energy of 11 MW.]]>
<![CDATA[Analisa pengaruh variasi media quenching dan penambahan silikon pada paduan al-si remelting velg sepeda motor terhadap sifat fisik dan mekanis ]]>
<![CDATA[Andi Septiadi]]>;
<![CDATA[Teguh Triyono]]>;
<![CDATA[Joko Triyono]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol 11 No 2 (2016): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v11i2.55
<![CDATA[The disposition of aluminum is lightweight, high corrosion resistance, low density, can be formed properly, and a high conductivity both thermal and electrical. Remelting process has a defect (porosity) however the weakness of remelting is ability of a material decreases along with the treatment. The additional silicon on the materials aim to improve the characteristics. This research was done to find out the effect of silicon variant and it had been quenched with a variant of cooling media. The material that had been used was Aluminum-Silicon (Al-Si) from velg motorcycle waste. Casting processing method that was done using sand casting. The ingredients of remelting Al-Si with silicon addition (Si) are 2%, 4% and 6%. The specimen was formed based on JIS Z 2202 for tenstile strength. Heat treatment had been performed on the specimen with temperatur 520oC for 1 hour, and quenched on water and oil as a cooling media. Testings were performed; ingredient test, tensile test, hardness test, dan micro structure. he result testing of tensile strength and hardness showed the average value increased with additional silicon and quenching treatment. Tenstile strength and hardness specimen using a water as a cooling media have a better value than an oil SAE 40 as a cooling media.]]>
<![CDATA[Sintesis dimensi dan analisis kinematik mekanisme empat batang dengan rantai kinematik RSSR ]]>
<![CDATA[Rahim Isnan Al Hilman]]>;
<![CDATA[Syamsul Huda]]>;
<![CDATA[Mulyadi Bur]]>
<![CDATA[ Jurnal Teknik Mesin Indonesia Vol 11 No 2 (2016): Jurnal Teknik Mesin Indonesia ]]>
Publisher : <![CDATA[Badan Kerja Sama Teknik Mesin Indonesia ]]>
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DOI: 10.36289/jtmi.v11i2.62
<![CDATA[Spatial four bar linkage mechanism can be applied to transmit rotation from crank to coupler with various orientation of axis rotation. Revolute-spherical-spherical-revolute (RSSR) one of popular configuration of spatial four bar linkage mechanism. The mechanism was compossed of four kinematic constants that shoud be determined to yield specified relationship between input and output displacements. In this paper was carried out the dimensional synthesis of the RSSR mechanism using function generation method with consideration of limitation of spherical joint workingspace and transmision angle. For case study was syntesized the RSSR four bar mechanism where orientation of crank axis rotation is perpendicular to follower axis rotation and the two axes lie on the same plane. The crank was desired to rotate fully cycle and the follower rotate with the span 1800 (0 ≤ ï¦ â‰¤ 180o) . It was obtained the otimal dimension of crank, coupler and folower, 5.55, 8.07 and 2.79 units respectivelly. The displacement analysis was applied to evalute performance of the mechanism. The obtained mechanism can perform fully cycle crank rotation and 133.20 span motion of follower and tranmission angle between coupler and follower varies between 38.4o and 101.6o.]]>
