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ANALISA GAYA DAN DAYA MESIN PENCACAH RUMPUT GAJAH BERKAPASITAS 1350 KG/JAM Rusdiyana, Liza; Suhariyanto, Suhariyanto; Widiyono, Eddy; Mursid, Mahirul
Jurnal Energi Dan Manufaktur Vol 7 No 2 (2014): Oktober 2014
Publisher : Department of Mechanical Engineering, University of Udayana

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Di indonesia banyak penduduk yang berprofesi sebagai peternak. Jika peternak yang memilikijumlah ternak banyak (lebih dari 5) akan mencacah rumput gajah dengan cara manual, itu akanmenghabiskan waktu, jadi dengan adanya alat pencacah rumput gajah akan sangat membantumenghemat waktu. Alat pencacah rumput gajah adalah alat yang dapat membantu menghematwaktu. Jadi alat pencacah rumput gajah adalah teknologi tepat guna. Proses untuk membuatalat pencacah rumput gajah adalah dengan melakukan perhitungan poros dan pasak, dayayang dibutuhkan alat pencacah rumput gajah, kapasitas produksi pada alat pencacah rumputgajah. Dari proses perhitungan alat pencacah rumput gajah di dapatkan daya motor sebesar0,64164 Hp dengan putaran 707,5 rpm, diameter poros sebesar 2,39 cm dengan bahan S45C,dan proses produksi didapatkan 1352 kg/jam.Kata kunci : Poros, daya, rumput gajah, mesin, ternakIn Indonesia many people who work as breeder. If the breeder will cut elephant grass by hand,it will spend the time, so with the bulrush enumerator tool will greatly help save time. Bulrushenumerator tool is a tool that can help save time. So apparatus bulrush enumerator isappropriate technology. The process to make the bulrush enumerator tool is to performcalculations and peg shaft, power tools required enumerators of bulrush, the productioncapacity of the apparatus bulrush enumerator. Of the calculation tool in bulrush chopper getmotor power of 0.64164 Hp to 707.5 rpm rotation, shaft diameter of 2.39 cm with a material S45 C , and the process of production obtained in 1352 kg / hour.Keywords: Axle, power, elephant grass, machinery, livestock
PENERAPAN TEKNOLOGI LAS GESEK (FRICTION WELDING) DALAM PROSES PENYAMBUNGAN DUA BUAH PIPA LOGAM BAJA KARBON RENDAH Sanyoto, Budi Luwar; Husodo, Nur; Setyawati, Sri Bangun; Mursid, Mahirul
Jurnal Energi Dan Manufaktur Vol 5 No 1 (2012): Oktober 2012
Publisher : Department of Mechanical Engineering, University of Udayana

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Kata kunci: waktu gesek, las gesek, tekanan tempa, baja karbon rendah, pipa airAbstractThe welding process of the carbon steel pipe will be abit difficult since during welding it is needed rotarymovement of the pipe in order to the operator easily to join the welding. This difficulty can be overcome byapplying friction welding technology. This method is strongly influenced by friction time, rotation velocityand pressure of the pressing. Therefore it is needed the research to joint the carbon steel pipe by applyingfriction welding. The variation time for the friction welding test were 15, 20, 25, 30 and 35 second. Theprocess parameters were keep constant. The friction welding machine was operated with 4125 rpm, frictionpressure 15 kg/cm2 and pressure about 70 kg/cm2.The specimen obtained was tested for metallographic,hardness test. The metallography test was done recognize the microstructure and the hardness test wasconducted to obtain the hardness distribution in the original material, in the HAZ region, and in the weldingmetal. Analyses for the value of hardness in the three region namely, origin metal, HAZ, and welding metalwill be related to the change in microstructure.The longer the time for the friction, the temperature increaserespectively. But the increase the temperature affect on the upset value become larger and the samplebecome shorter. The research for joining with friction welding 4125 rpm, friction pressure 15 kg/cm2 andthresure 70 kg/cm3 can be concluded that frinction time that is recomended is 35 second.Friction weldingmethod can be applied for the joining low carbon steel pipe. The microstructure in the joining was found notsignificant change that mean there is no change in mechanical properties
EFEK DIMENSI VALVE GAP PADA KINERJA MESIN DAN BUANGAN EMISI GAS DARI MESIN PENGAPIAN EMPAT TAK: STUDI PERCOBAAN Sarsetiyanto, Joko; Mursid, Mahirul
Purifikasi Vol 6 No 1 (2005): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v6.i1.268

Abstract

Valve is an important part in internal combustion engine. Care must be taken to the valve mechanism in order to keep its ideal gap dimension. The gap dimension can alter because of wearing process and loosen of adjustment screw. Gap dimension indicates the amount of air-fuel mixture entering the combustion chamber and leak of compression pressure. The leakage caused by delay time in closing the exhaust valve. This research work shows that valve gap dimension has significant effect on the engine performance and exhaust gas emission. Laboratory experiment has been performed to establish the engine performance and exhaust gas emission. The engine has been tested is 4K type of four stroke spark ignition engine, with couple intake-exhaust gap dimension varies : 10mm-20mm, 15mm-25mm, 20mm-30mm, 25mm-35mm and 30mm-40mm. The result shows that optimum engine operation is 3000 rpm with couple intake-exhaust gap dimension 25mm-35mm. In that condition engine produces BHP = 49,40 hp, BTorsi = 11,80 kg-m, BMEP = 11,49 kgf/cm2, BSFC = 0,26 kg/ hp- hour and BTE = 24,29 % according to the exhaust gases emission CO = 3,6 % vol., CO2 = 13,1 % vol., HC = 225 ppm, and O2 = 1,1 %.
DESAIN DAN ANALISA PISAU PENGHANCUR BONGGOL JAGUNG SEBAGAI BAHAN PAKAN TERNAK Rusdiyana, Liza; Suhariyanto, Suhariyanto; Winarto, Gathot Dwi; Hadi, Syamsul; Mursid, Mahirul
Jurnal Energi Dan Manufaktur Vol 9 No 1 (2016): April 2016
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstrak:Pakan ternak memegang peranan yang sangat penting dalam usaha peternakan karena harus mempunyai nilai giziyang tinggi.Pada Usaha Kecil Menengah (UKM) pembuatan pakan ternak di Kecamatan Jatirejo Kabupaten Mojokertoini dalam proses produksinya sudah menggunakan mesin, tetapi hasil bonggol jagung yang dihancurkan dari mesintersebut masih jauh dari sempurna. Oleh karena itu untuk mengatasi masalah ini adalah dengan merancang alatpenghancur bonggol jagung. Dengan menggunakan tujuh pisau penghancur dan desain peletakan pisau dibentukspiral. Material pisau penghancur yang digunakan yaitu Stainless Steeel Food Grade 304. Kemudian merencanakanporos, pasak, dan melakukan analisa dengan menggunakan software Ansys 12.1. Hasil dari perhitungan dan analisa,didapatkan daya yang dibutuhkan menghancurkanb onggol jagung untuk satu pisau yaitu 0,826 HP. Hasil analisa pisaumemiliki tegangan maksimum sebesar 5,408x105 N/m².Kata kunci: Bonggol jagung, baja tahan karat, AnsysAbstract:Animal feed plays a very important in the farm because it must have a high nutritional value. On Small and MediumEnterprises (SMEs) in the manufacture of animal feed Jatirejo District of Mojokerto regency is in the process ofproduction has been using the machine, but the results were crushed corncobs of these machines are still far fromperfect. Therefore, to overcome this problem is to design crusher corncobs. By using the seven-blade knife layingcrusher and formed spiral design. Materials used are knives crushers Food Grade Stainless steeel shaft 304. Thendesigning the shaft, pegs, and performs analysis using ANSYS 12.1 software. The results of calculation and analysisshowed the power needed to destroy corncob one knife is 0,826HP. The results of analysis of the knife has a maximumstress at 5,408 x 105 N/m².Keywords: Clevis corn, stainless steel, Ansys
EFEK POINT BREAKER GAP PADA KINERJA MESIN DAN BUANGAN EMISI GAS DARI MESIN PENGAPIAN EMPAT TAK Mursid, Mahirul
Purifikasi Vol 6 No 2 (2005): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v6.i2.284

Abstract

The unperfect ignition caused an air pollution emission. Breaker point is an important part in conventional ignition system of spark ignition engine. Routine inspection and maintenance must be done in order to maintain its GAP ideal dimension. The point breaker gap can change due to wear caused by mechanical friction and electron spark abrasion. GAP dimension indicates the magnitude of dwell angle, and dwell angle indicates the periode of curent flowing to the primery coil of ignition coil. Large primery coil of ignition coil means that periode of curent flowing is long enough to make the magnetic flux occures in the ignition coil become saturated. Saturated magnetic flux will produce high voltage induction in the secondary coil of ignition coil. This research shows that gap dimension of breaker point has significant effect on the engine performance and poisoned exhaust gas emission (carbon monocside). Laboratory experiment has been done to measure the engine performance and exhaust gas emission. The engine used in the experiment is 4 K type of four stroke spark ignition engine, with gap dimession varies : 0,35 mm, 0,40 mm, 0.45 mm, 0,50 mm. The result shows that optimum engine operation is 3000 rpm with point breaker gap dimension of 0,4 mm. In that condition engine produces BHP = 49,40 hp, Btorsion = 11,8 kg-m, BMEP = 11,49 kg/cm2., BSFC = 0,25 kg/hp-hour, and BTE = 25,5 %.. The exhaust gases emision are : CO = 2,9 % vol., HC = 224 ppm, CO2 = 14,9 %  vol. and O2 = 0,4 %.vol.
PENGARUH KATALIS OKSIDA TEMBAGA + KROM TERHADAP EMISI GAS CO, C02 DAN HC PADA KENDARAAN BERMOTOR Mursid, Mahirul; Razif, Mohammad
Purifikasi Vol 5 No 1 (2004): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v5.i1.304

Abstract

The transition metal oxide was used as catalytic converter. The metal alloy consisted of copper and chrom. The gas examination included carbon monoxide (CO), carbon dioxide (CO2), and hydrocarbon (HC) at different engine rotation, and variation of layers 3, 5, 7, 11, and 15. The copper oxide had the highest removal of CO 35.6% at 2000 rpm, while HC removal was 34.13% at 3000 rpm. Engine slow down due to copper oxide catalyst addition was 5.2%. The best performance copper and chromium oxides with 15 layers of chromium, when the removal of CO and HC was 64.05% and 49.5% respectively at the engine speed of 2000 rpm and 3000 rpm. Having experimented as mentioned above, the engine power dropped about 3.4%.