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Jurnal Energi Dan Manufaktur
Published by Universitas Udayana
ISSN : 23025255     EISSN : 25415328     DOI : -
Core Subject : Science, Engineering,
Energy Industrial & Manufacturing Engineering
"Jurnal Energi dan Manufaktur" is a journal published by Department of Mechanical Engineering, University of Udayana, Bali since 2006. During 2006-2011 the journal's name was "Jurnal Ilmiah Teknik Mesin CAKRAM" (Scientific journal in mechanical engineering, CAKRAM). "Jurnal Energi dan Manufaktur" is released biannually on April and October, respectively. We invite authors to submit papers from experimental research, review work, analytical-theoretical study, applied study, and simulation, in related to mechanical engineering (energy, material, manufacturing, design) to be published through "Jurnal Energi dan Manufaktur".
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Articles 10 Documents
 1 
Search results for , issue "Vol 3, No.2 Desember 2008" : 10 Documents clear
Perhitungan aliran dan peramalan karakteristik pompa sentrifugal bertingkat dengan penggunaan CAD blade’s system W.M. Rumaherang
Jurnal Energi Dan Manufaktur Vol 3, No.2 Desember 2008
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

An Important problem in centrifugal pumps designing is characteristic works in theoretical calculations. They are precise or very close to practical characteristics and results of tests in laboratory. Hydrodynamics parameters influence on the inlet sides, blades of impeller, vaned diffusers, stage guide vanes and side go out of pump. In turn they have very strong influence on the characteristics. In consequence to the plan of centrifugal pump, an important problem is geometrical constructions of the blades impeller, vaned diffusers, stage guide vanes and outlet of pump. The solution of this problem lays accuracy in hydro dynamical calculations in the design process, manufacturing and installation of pump. Special CAD for the blades can simplify the design process. The obtained result is highly accurate. Sketch can be constructively conducted by AUTOCAD, KOMPAS (KOM?AC) or other programs to determine coordinates of fixed points in the blade lines. All that points are then arranged in formations according to axis r, x, y, z, in the dat.file as input file to CAD. The result presented in the drawing form of blades profile and in the forecasting of whole pumps characteristics: speed, loses, power (N), head (H) and efficiency (?) versus capacity (Q). Calculations made in the several times, get the construction pump with the optimal characteristics. The result indicates that optimal conditions obtain to profile with the main dimensions: impeller dbt=0.065 m, D2=0.240 m, D0=0.1312, z=7, b1=, b2=0.0414 m, ?1=26o, ?s2=23o, ?=103o, diffusers: ?d= ?s4= ?d= ?s5=40o, ?sc= ?bl3=12,0o , ?=40o, stage guide vanes: ?bs= ?s6=89,5o,?= 600.
Pengaruh posisi pengelasan dan gerakan elektroda terhadap kekerasan hasil las baja JIS SSC 41 I Gusti Ngurah Nitya Santhiarsa; I Nyoman Budiarsa
Jurnal Energi Dan Manufaktur Vol 3, No.2 Desember 2008
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

At Welding process, position of welding and movement of electrode have influence for the mechanic properties of product. Research into this study influence position of welding and movement of electrode in welding process for the change of hardness properties of Steel material SSC 41.The Method used that is factorial Experiment factorial method, where there are two factor that is position of welding and electrode movement. On welding position there three position that is position flat, vertical and over head. At movement of electrode there three movement that is movement of circle pattern, pattern of Zig-zag,and pattern C. Pursuant to research result, position of welding and movement of electrode used have of level significance influence into hardness value, highest mean Value of hardness Vickers is 513,891 Kg/mm2 there are at welding position variable to the head and C pattern electrode movement, while lower mean value hardness of Vickers is 441,348 Kg/mm2 at welding position variable level off and at zigzag pattern electrode movement.
AGING CHARACTERISTIC AND MECHANICAL PROPERTIES OF FORMED MG-ZN-AL-RE-CA ALLOYS I Nyoman Gde Antara
Jurnal Energi Dan Manufaktur Vol 3, No.2 Desember 2008
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Abstrak The present study focused on aging characteristic and mechanical properties of semi solid formed Mg-Zn-Al-RE-Ca alloys. The alloys are divided into Mg-8%Zn-4%Al-0.6%Ca and Mg-6%Zn-3%Al-0.6%Ca based alloys, and rare earth elements were added in the range from 1 to 3 mass% (hereafter ZAE841, ZAE842, ZAE843 and ZAE631, ZAE632, ZAE633). The alloy specimens were strained, press-formed at 580?C and extracted to prepare specimens for T-6 heat treatment and tensile investigations. The results show that all of the alloys exhibit microstructure that consisting of fine spherical ? particles and fine eutectic compounds around the particles. The peak hardness of the alloys was mainly reached when the solution heat treatment is conducted at temperature of 330?C for 16 hours and aging at 175?C for 32 hours. The hardness numbers increase with increasing content of the alloying elements. Tensile properties at high temperature of semi-solid formed alloys increase in accordance with increasing the amount of compounds. The amounts of compound increase as the alloying element increase.
Pengaruh besar arus pengelasan dan kecepatan volume alir gas pada proses las GMAW terhadap ketangguhan aluminium 5083 I N Budiarsa
Jurnal Energi Dan Manufaktur Vol 3, No.2 Desember 2008
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Level of welding current and flow rate of gas volume are welding parameters, which can influence result of welding process use of GMAW (Gas Metal Arc Welding) at material of Aluminium 5083. Testing to be carried out is impact test with nocth type of standart test from A.S.T.M. standart pt.31 Designation E23-82. Specimens to be applied use of standard from DIN 50115 and standart ISO V nocth. Treatments to be given to specimen are variation flow rate of gas volume and level of welding current. By using of factorial experiment method can be showed that level of welding current and flow rate of gas volume and its interaction give a significance effect toward toughness properties of material. The result obtained with level of welding current 250 Ampere at variation of gas volume flow rate (17 l/minute, 18 l/minute, 19l/minute) gives result low level toughness properties of material. The lowest level toughness (26,967) at (250 Ampere, 19l/minute)
Studi terhadap prestasi pompa hidraulik ram dengan variasi beban katup limbah Yosef Agung Cahyanta; Indrawan Taufik
Jurnal Energi Dan Manufaktur Vol 3, No.2 Desember 2008
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

People who live far away from the water source have a problem to get water. Usually they use centrifugal pump to pumping the water to their house. Using this pump needs electricity, but some times they have problem with electricity. Hydraulic ramp pump is the solution because it doesn’t need electricity or fuel. Hydraulic ramp pump can work continuously 24 hours/day. Hydraulic ramp pump is cheaper and easy to build. This experiment has done to know the performance of the hydraulic ramp pump using the weight of waste valve variations and the head input. The hydraulic ramp pump use on this experiment has 1,5 inch inlet pipe and 0,5 inch outlet pipe. The variations of the waste valve weight are 410 g, 450 g, 490 g, 540 g, 580g and 630 g. The result of investigation shows that the maximum flow capacity, the maximum head discard and the maximum efficiency are obtained when the weight of the waste valve is 410 g. The maximum flow capacity is 11,146 × 10-5 m³/s, the maximum head discard is 7,378 m and the maximum efficiency is 16,302 %.
Laju perambatan retak plat aluminium 2024 T3 dengan beban fatigue uniaksial pada rasio beban dan jarak diameter lubang berbeda Budi Luwar Sanyoto; Wajan Berata
Jurnal Energi Dan Manufaktur Vol 3, No.2 Desember 2008
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Producing of component by machining process can yield component defective. That defective in crack form, although it probably is very litlle. If that defective is applied by a syclic load, the defective exist will propagate with a propagation rate until a limit where that structure is not able to restrain load applied to it. In this research, the specimen to be used was plat Al 2024 T3 with open hole, constant diameter and different distance between hole. Testing to be done by giving fatique load with ratio 0,3, according to ASTM standard E-647-93 (1994). The data to be collected were crack length and the number of load cyclic. Further, it is calculated crack propagation rate (da/dN) toward strength intensity factor (?K). The result of investigation shows that crack propagation rate curve of strength intensity factor function in the Paris area has Paris constant m = 1,163 until 4,2, and value of C = 1,69E-12 until 9, 34E-09
Pengaruh massa air baku terhadap performansi sistem destilasi IGNB. Catrawedarma
Jurnal Energi Dan Manufaktur Vol 3, No.2 Desember 2008
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Clean water is requirement of very important human life. One of the method to be used for obtain clean water is destillation process. Important matter in destillation process is evaporation and condensation process, influenced by heating of standard water. Heating process of this standard water will influence by mass of standard water to be heated. Mass standard water which many will cause heating process become requiring long time, so that from that thing is conducted by examination with variations of mass standard water in basin. Examination conducted to get data which in the form of mass and temperature condensat which is accomodated in reservoa. For the next, from the data conducted by calculation to know performance of destillation sistem which it form are destillation rate, product efficiency, and system efficiency for the variations of mass standard water. From result of data analysis and calculation, can know that happened fluctuation of system efficiency and destillation rate. System efficiency depended from ratio between condensation energi (qc) of energi enter system (qin). Destillation rate depended from condensat mass ratio a time difference. From result of calculation got that variation of 3 kg standard water giving the best value from is fifth of standard water mass variation of with value : destilas rate average equal to 3,829 gr/mnt, total product efficiency equal to 80,42 %, and total efficiency average equal to 22,67 %.
Variasi berat roller sentrifugal Pada continuosly variable transmission (CTV) terhadap kinerja traksi sepeda motor Made Dwi Budiana P.; I Ketut Adi Atmika; IDG. Ary Subagia
Jurnal Energi Dan Manufaktur Vol 3, No.2 Desember 2008
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

The automotive technology especially motorcycle has been innovated to improve the handling stability and comfortably. The developing of motorcycle technology has applied automatic transmission system. The automatic transmission has systems which need acceleration handling and break control. From this concept has been done to develop automatic transmission system according to variable which said Continuously Variable Transmission (CVT) system.The purpose of this experiment is to know effect weight of roller centrifugal in speed governor to traction performance. The analysis traction performance executed matchematic model with motorcycle Nouvo, 115 cc 4 strokes as vehicle model. Parameter input of this calculation include: vehicle speed (V = 0-30 km/h, V = 40-70 km/h, dan V = 80-90 km/h), engine torque, and vehicle dynamic model behavior. For get the answer, the expriment executed with simulation mode and then appealed with expriment on straightaway level.The obtained result on simulation and expriment : for roller centrifugal with 8 gr weight will gave the maximum traction performance on low speed until the acceleration on low speed is faster than the roller centrifugal 10.2 gr or 12 gr. However the roller centrifugal with 12 gr weight will gave the highest traction performance on the high speed until the vehicle easy to faster in high speed, and for roller centrifugal 10.2 gr weight (standard) have traction performance between roller centrifugal 8 gr and 12 gr. So, the roller 8 gr give the best performance traction, because at a low speed is required high acceleration.
Kolektor surya jenis sirkular dengan memanfaatkan neon bekas sebagai kaca penutup I Ketut Gede Wirawan
Jurnal Energi Dan Manufaktur Vol 3, No.2 Desember 2008
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

To reduce the dependence to conventional energy resource, an effort to develop alternative energy application should be considered. One of them is the solar energy. Tubular solar thermal collector is a device to absorb the solar energy in from of thermal energy and transfer it into fluid. In water heating process, the solar collector which consists of some ex turbular lamp as cover glass, and finned absorber pipes, is designed and will be studied to obtain its performance. The mass flow rate amd inlet temperature of working fluid must be adjusted to achive the highest efficiency for a certain tubular solar collector.The experiment to examine the performance of the device done from 10.00 AM to 2.00 PM. The performance is representated by the rate changes of mass flow and inlet fluid temperature. The experiment shows that the best performance of this tubular solar collector is at mass flow rate of 250 cc/min with the maximum efficiency of 58.5 %
Perilaku kekuatan fatigue paduan aluminium seri 2014 akibat proses termomekanikal aging Sujita -
Jurnal Energi Dan Manufaktur Vol 3, No.2 Desember 2008
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Aluminium alloy seri 2014 is material which is often used in industry. Because excellence of mechanic properties. But also have the weakness at properties of strength fatigue. Though fatigue strength is important parameter in desain, especially if application at condition of dinamic loading, so that need the treatment to improve it. Fatigue strength go together the micro structure and mode of failure of failure of effect of stress concentration. Aging treatment ordinary done not yet given the influence which even on the contrary. Inconsistence of fatigue strength alluminium alloy show the phenomenon which must be research instructing at repair of fatigue strength , so that need the advanced treatment in the form of termomechanical aging. The research conducted by using alluminium alloy series 2014 formed by specimen fatigue test of the size diameter 8 mm and long 87 mm relate at standart (ASTM E 513), continued treatment of termomechanical aging, tested the fatigue, and monitoring microstructure of change. By structure micro, the treatmentTMA have the effect which sicnificant to improvement of Alluminium alloy series 2104 fatigue strength. Generally entire process TMA improve of limit fatigue from specimen at condition early of limit fatigue 48.3 N / mm2 (48.3 MPA), mounting to become 50 until MPA, or mount 3.4 % until 44.9%. With the process of termomechanical aging TMA I, happened the increasing of cycle number equal to, 26.3 %, at treatment of TMA II go up equal to 62 % and 89.8% at process of TMA III, at maximal loading (180 Mpa).

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