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Jurnal Teknik Mesin Indonesia

jtmi
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Published by Badan Kerja Sama Teknik Mesin

ISSN : 1907350X EISSN : 25977563 DOI : -

Aerospace Engineering Automotive Engineering Control & Systems Engineering Industrial & Manufacturing Engineering Mechanical Engineering

Jurnal Teknik Mesin Indonesia “JTMI” " adalah jurnal ilmiah sains dan teknologi yang diterbitkan oleh Badan Kerjasama Teknik Mesin Indonesia. JTMI meliputi bidang konversi energi, material, desain mekanikal, manufaktur dan otomasi

Arjuna Subject : Teknik (semua kategori) - Teknik Mesin

Articles 8 Documents

Search results for , issue "Vol 12 No 2 (2017): Jurnal Teknik Mesin Indonesia" : 8 Documents clear

Performansi aktual modul photovoltaik dengan pengarah matahari Jalaluddin .; Baharuddin Mire
Jurnal Teknik Mesin Indonesia Vol 12 No 2 (2017): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Actual performance of photovoltaic module with solar tracking is presented. Solar radiation can be converted into electrical energy using photovoltaic (PV) modules. Performance of polycristalline silicon PV modules with and without solar tracking are investigated experimentally. The PV module with dimension 698 x 518 x 25 mm has maximum power and voltage is 45 Watt and 18 Volt respectively. Based on the experiment data, it is concluded that the performance of PV module with solar tracking increases in the morning and afternoon compared with that of fixed PV module. It increases about 18 % in the morning from 10:00 to 12:00 and in the afternoon from 13:30 to 14:00 (local time). This study also shows the daily performance characteristic of the two PV modules. Using PV module with solar tracking provides a better performance than fixed PV module.

Analisa dynamics of handling kendaraan reverse trike ditinjau dari pergeseran centre of gravity (cg) Bhanu Putra Bumi; Wibowo .; Raymundus Lullus Lambang G
Jurnal Teknik Mesin Indonesia Vol 12 No 2 (2017): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

The purpose of this research is to get the dynamics behavior of the Reverse Trike vehicle handling based on testing and calculation analysis using Newton's first law principle. Reverse Trike has a length of Wheelbase (L) 1.14 m, Trackwidth width (tf) 0.81 m, front wheel suspension (bf), and Ground Clearance 0.11 m. Testing starts from vehicle weighing to get the average weight of the front wheel (Wf), rear wheel weight (Wr), and total vehicle weight (Wt). Then do U-Turn maneuver testing with variations in speed from 20 km / h to 50 km / hour. Calculation analysis is done by considering the Load Transfer that occurs on the vehicle that is doing the maneuver. Braking results in rolling moments, centrifugal force due to vehicle maneuver resulting in pitching moments, and vehicle acceleration results in a drag force. The results showed that Reverse Trike vehicle design experienced Oversteer behavior when performing maneuver motion. This is indicated by the value of Index Understeer (Kus). The average value of Kus at 20 km/h speed is -4.33. At 30 km/h speed is -2.68. At 40 km/h speed is -2.04. And at 50 km/h speed is -1.58.

Studi eksperimental pengaruh mapping waktu pengapian dan mapping durasi injeksi serta rasio kompresi terhadap perrformansi dan emisi gas buang engine honda CB150R berbahan bakar E50 Dwijo Hartono; Marthen Paloboran; Bambang Sudarmanta
Jurnal Teknik Mesin Indonesia Vol 12 No 2 (2017): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Bioethanol is a vegetable fuel that is formulated for motor vehicles. In the application of bioethanol in combustion engines, it requires some modifications to the engine to be used such as changing the ignition time, changing the duration of the injection, changing the compression ratio, and modifying the engine fuel input system. Thus, it is expected to increase the performance of the engine performance. This study focused on Honda CB150R engine with the initial setting on the ECU programmable. Thereafter the fuel injection testing to achieve AFR Bioethanol E50 with injection percentage of 100, 125, 150, 175 and 200 percent of the total fuel injection standard. Then tested using Pertamax (0% bioethanol) under standard conditions as the control group and the use of Bioethanol E50 with variation of ignition timing as the test group by taking 4 variations of advance ignition timing 16 Â°, 20 Â°, 24 Â° and 28 Â° BTDC at compression ratio which has been converted to 12, 12.5, and 13. From this research, the exact mapping of injection mapping at 2000 to 4000 rpm is 150%, while at 5000 to 8000 rpm, the best duration is 125%. As for the ignition timing mapping is obtained in the range of 16 Â° and 20 Â° BTDC for the compression ratio of 12, 12.5, and 13. Based on the results of au Eu ecu programable on the compression ratio 11 obtained an average value of 13.154 which means the condition of air and material mixture burn is under the afr stoichiometry ie 14.7. As for the results of afr E50 ecu programable on the compression ratio 11 obtained an average value of 11.160, which means the condition of air and fuel mixture is under the afr stoikiometri is 12.6. It shows that the Honda CB150R engine operates on afr under the stoichiometry of the fuel used. So Honda CB150R engine has the characteristics of power to be increased and no detonation occurs, but the fuel consumption time value will decrease as well as CO and HC emissions increased

Sifat mekanik pada komposit lamina menggunakan matriks kayu mahoni dan reinforcement bambu Sofyan Djamil; Sobron Lubis; Calvin Chardly Pospos
Jurnal Teknik Mesin Indonesia Vol 12 No 2 (2017): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Composite is a combination of two or more materials which creates new property. Composite with basic nature materials is the famous thing now, because hopefully the results of this material composite will strong like iron materials. The method in this research use matrix mahoni wood and woven bamboo for the reinforcement. The research strart with plain woven bamboo and basket woven bomboo cut to size 200mm x 20mm. The next procces bamboo woven is glued with epoxy to fuse macroscopically with wood by hand lay-up. Then this composite materials will be tensile and flexural tested to know the occurred strength. Testing process is done by two methods : tensile test which refers to ASTM 3039 and flexural test which refers to ASTM 7264. Based on tensile test, maximum tensile strength obtained from 5 specimens for Plain Composite specimen about 43,18ð‘ð‘šð‘š2â„, and Basket Composite about 45,65ð‘ð‘šð‘š2â„. Meanwhile, based on flexural test obtained from 3 specimens for Plain Composite woven results in maximum stress about 68,35ð‘ð‘šð‘š2â„ and 82,27ð‘ð‘šð‘š2â„ for basket woven. Results obtained from optical microscope observation shows that fiber from fracture of composite plain woven and basket woven have brittle properties.

Penggunaan load cell jenis extended octagonal ring transduser untuk uji buckling pada beam Muhammad Irham Maulana; Soeharsono .; Tono Sukarnoto
Jurnal Teknik Mesin Indonesia Vol 12 No 2 (2017): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Penelitian ini dilakukan untuk mengetahui karakteristik dan sensitivitas dari transduser gaya jenis Extended Octagonal Ring (EOR). Analisis dibagi menjadi dua yaitu menggunakan metode elemen hingga dan pengujian eksperimental. Sensitivitas EOR ditentukan melalui pengujian eksperimental dengan pembebanan vertikal 100 N hingga 500 N. Analisis metode elemen hingga menggunakan software ANSYS dengan pembebanan 3 kN hingga 15 kN disesuaikan dengan beban kritis buckling. Hasil pengujian menunjukan linearitas dan sensitivitas silang pada EOR. Pengujian eksperimental diperoleh sensitivitas EOR diperoleh sebesar Kv = 0.1999 Î¼s.N-1 untuk gaya vertikal dan Kh = 0.0056 Î¼s.N-1 untuk gaya horizontal dengan sensitivitas silang sebesar 2.8 %. Analisis metode elemen hingga diperoleh sensitivitas EOR diperoleh sebesar Kv = 0.1858 Î¼s.N-1 untuk gaya vertikal, Kh = 0.0018 Î¼s.N-1 untuk gaya horizontal dan Km = 0.007 Î¼s.N-1 untuk momen dengan sensitivitas silang sebesar 0.9 % dan 3.76 %. Selanjutnya, EOR dapat digunakan sebagai transduser untuk analisis buckling.

Pembuatan dan pengujian turbin propeller dalam pengembangan teknologi pembangkit listrik tenaga air piko hidro (PLTA-PH) dengan variasi debit aliran Henanto Pandu Dewanto; Dwi Aries Himawanto; Sukmaji Indro Cahyono
Jurnal Teknik Mesin Indonesia Vol 12 No 2 (2017): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Hydroelectric power plants (hydropower) with a power generated capacity of less than 5 kW called "Pico Hydro" (hydropower-PH). Pico Hydro is one of the renewable energy sources that are environmentally friendly. In this study aims to: (1) the manufacture hydropower plants Pico Hydro energy-efficient, renewable and environmentally friendly; (2) determine the efficiency of the turbine with the testing of flow variation; (3) determine the efficiency of generator. Designing and making portable water turbines are easily in the manufacture, operation, and maintenance and has a high efficiency and effectiveness that can use the method of reverse engineering. The production process is performed to create a turbine by the lathe and welding processes. While the materials used are mild steel. Results of this study were found that: (1) the manufacturing process of hydropower plants Pico Hydro can be performed easily by the public; (2) the type of turbine used in hydropower-PH testing is a propeller turbine with 4 blades; (3) flow measurement with V-Notch method showed the following actual debit are 5.38 x10-3 (m3/s), 6.62 x10-3 (m3/s), 7.69 x10-3 (m3/s) and 8.84 x10-3 (m3/s. Turbine efficiency is 3.59 %, 4.26 %, 5.66 % and 7.54 %. The efficiency of the generator has a value of 39.31 %, 40.51 %, 32.55 % and 30.45 %.

Pengaruh kandungan alumina terhadap kekasaran permukaan dan foto mikro permesinan pada komposit Al-Al2O3 Ahmad Ibnu Nafili; Sri Mulyo Bondan Respati; Budi Santoso
Jurnal Teknik Mesin Indonesia Vol 12 No 2 (2017): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

The aluminum is the most abundant element on the earth and there are always a combination with other the elements. One of the most widely used the composite types in various applications is the Al-Al203 composite. This composite is the development of metal matrix composite ie the aluminum, with the alumina (Al2O3) as the amplifier phase. To produce a superior cast product using the recyclable materials can be done by the squeeze casting method. The squeeze casting is often called the liquid metal forging. The liquid metal compaction process is carried out in a hydraulically pressed mold. This study aims to study the effect of the alumina on the surface roughness due to machining of the squeeze casting with the variation of the alumina mixture of 5. 10. and 15% by weight. The mold is heated to a temperature of 200ï‚°C and with a hydraulic pressure of 100 MPa. From the results of roughness testing of 5. 10. and 15% wt of the alumina, having a successive the roughness of 1.10, 1.16, and 1.27 Ra. This suggests that the higher the alumina mixture the higher the roughness value but in the micro-photograph also shows more the defects.

Pengaruh pre-strain dan tegangan listrik terhadap sifat fisik mekanik dan korosi sambungan las titik (RSW) logam beda jenis antara AISI 430 dan JSL AUS (J1) Arief Ari Kuntoro; Triyono .; Heru Sukanto
Jurnal Teknik Mesin Indonesia Vol 12 No 2 (2017): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Distortion often occurs in thin plate welding process. Pre-strain is ussualy choosen for repairing those failure. Pre-strain is the method which stretchs and holds the material before welding process. The main objective of this research is to investigate the effect of pre-strain and voltage on corrosion, physic and mechanics properties of dissimilar metals spot welded between AISI 430 and J1. Variation of pre-strain treatment is (0%; 0.2%; 0.5%; 1%) and voltage is (1.60V; 1.79V; 2.02V; 2.30V). Electrode pressure force is 500N. NaCl 3.5% solution is used for potentiodynamic polarization corrosion test. As a result of the experiment showed that nugget size enlarge with increasing voltage which cause pullout failure mode. Nugget size decrease after pre-strain was applied to the specimen and makes interfacial failure mode. Variation of pre-strain at 1% and voltage at 2.30V had the highest corrosion rate of 0.0497 mm/y. Pitting corrosion is the corrosion which occurs in the specimen. Pitting corrosion occurs due to overheating when welding with pre-strain treatment cause the protective oxide passive film layer from AISI 430 was damaged.

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