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Jurnal Rekayasa Mesin
Published by Universitas Sriwijaya
ISSN : 14116553     EISSN : 23387009     DOI : https://doi.org/10.36706/jrm.v21i1
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Jurnal Rekayasa Mesin (JRM) Jurusan Teknik Mesin Universitas Sriwijaya adalah sebuah jurnal blind peer-review yang didedikasikan untuk publikasi hasil penelitian yang berkualitas dalam bidang ilmu Teknik Mesin namun tak terbatas secara implisit. Semua publikasi di Jurnal Rekayasa Mesin ini bersifat akses terbuka yang memungkinkan artikel tersedia secara bebas online tanpa berlangganan apapun
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 40 Documents
 1   2   3   4 
Perbedaan Struktur Mikro, Kekerasan, dan Ketangguhan Baja HQ 705 Bila Diquench dan Ditemper pada Media Es, Air dan Oli Darmawi Bayin; M Amin Indra Putra
Jurnal Rekayasa Mesin Vol. 9 No. 1 (2009): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v9i1.2

Abstract

This research is aim to analyze the effect of quench at difference medium on the hardness and the impact of HQ 705 steel which is as similar as AISI 4340 with 0.38 – 0.43% C; 1.82% Ni; 0.5% - 0.8% Cr and 0,25% Mo. HQ 705 steel is heated to austenite temperature of 8500 C and hold as long as 15 minutes and cooled at the difference mediums, which is water, ice and oil. After that, the steels being tempered at temperature of 5500 C and hold as long as 30 minutes, and then again cooled. Finally, the specimens are tested to find hardness, toughness and microstructure. Through this research, we find the increase of hardness, from 33.4 HRC at no treatment to 56 HRC at cooling in water, 40.3 HRC at cooling in oil.
Pengaruh Perbedaan Temperatur Cetakan Logam Terhadap Fluiditas dan Struktur Mikro MG-44%AL Amir Arifin
Jurnal Rekayasa Mesin Vol. 9 No. 1 (2009): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v9i1.6

Abstract

Lenght of fluidity is one of important factor that give influence on thin wall casting. The increasing lenght of fluidity will increase feeding ability molten metal. At the thin wall mould, the cooling rate temperature move rapidly and then increasing solidification rate cast metal. The aim of the research is studiying optimal mould temperature on Mg-44%Al casting process. Gravity methode is used as this casting. The mould was made by machining process. Molten metal was pouring on 650oC, 700 oC and 750 oC into difference mould temperature (650oC, 700oC and 750 oC). The mould has difference thickness 0,5 mm; 1mm; 1,5 mm; 2 mm; 2,5 mm; 3 mm; 3,5 mm;dan 4 mm. The maximum length of fluidity at mould temperature 200oC on pouring temperature 700oC. Each of mould temperature, Increasing lenght of fluidity untill mould temprature 650oC and 700oC but decreasing lenght of fluidity after pouring temperatur 750oC, at all difference mould temperatures.
Kaji Pengaruh Anti-Roll Bar pada Suspensi Independen Depan Kendaraan ATV Z200 Terhadap Perilaku Body Roll Teguh Budi S Abunaim
Jurnal Rekayasa Mesin Vol. 9 No. 1 (2009): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v9i1.8

Abstract

In order to operated at field which vary, ATV ( All Terrain Vehicle) designed to have ability to maneuver which is supported with strong and light frame construction, taft machine and also adequate suspension system. Almost similar to car, ATV have applied suspension independent. The target of this research is to know anti-roll bar appliance installation influence at front suspension system of ATV Z200 to behavioral reduction of roll body, when vehicle in a condition curve (cornering). Analysis roll body conducted by using transfer analysis method with visual MSC software of Nastran 2004Result of this analysis will give reduction graph of roll body angle to speed of vehicle (10,20 and 30 km/hour) as function of displacement vertical from appliance lever arm anti bar roll. This angle is measured from vertical line with straightening of road to a line through a center of mass (center of gravity or shortened, CG) w. Which is vertical with frame. Result of this research showing that by equipment of anti bar roll, behavioral of roll from body vehicle of ATV Z200 when curve can decrease, that is equal to 17,925 % for the speed of 10 km/hour, 13,924 % for the speed of 20 km/hour, and 9,485 % for the speed of 30 km/hour.
Analisa Tegangan-Regangan Struktur Pegas Daun Akibat Modifikasi Penekanan Ismail Thamrin
Jurnal Rekayasa Mesin Vol. 9 No. 1 (2009): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v9i1.9

Abstract

Leaf spring represent one of suspension systems found on vehicle, and functioning as vibration silencer, at the same time as vehicle construct. Effect of modification by pressing, leaf spring function accepting a repeating dynamic load, will experience of damage effect of fatigue which emerge after the component experience its function. Intention of this research is to analysis effective stress - strain that happened at leaf spring structure effect of pressing modification. From result of stress analysis, in the leaf spring which have natural pressing, have an increasing of maximum stress, that is from 1.09361 x 108 N/m2 become 1.12632 x 108 N/m2, or have degradation of strength equal to 3%. This matter can cause possibility to the happening of broken at leaf spring after pressed is bigger comparing to before pressed.
Analisis Perpindahan Panas pada Pendingin CPU dengan Menggunakan Metode Elemen Hingga Firmansyah Burlian
Jurnal Rekayasa Mesin Vol. 9 No. 2 (2009): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v9i2.12

Abstract

Thermal management is an important part of the design process of most electronic devices. Thermal management is important both at the component level and system level plays an important role in device quality, efficiency, and, above all, itsreliability. One method of thermal management in electronic devices is the use of water-cooling block on the CPU. In this study conducted an analysis of heat transfer using CPU cooling Finite element method. Water analysis results showed that using the CPU block is longer fins transfer heat value better than the CPU water block using shorter fins, with a comparison of numerical and analytical calculation of temperature difference on each dimension of the fin surface obtained between 0.005% to 0.7 %.
Kompor Gas Berbahan Bakar Biomassa Fajri Vidian
Jurnal Rekayasa Mesin Vol. 9 No. 2 (2009): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v9i2.13

Abstract

The rule of goverment for converting kerosene to gas made problem in rural to get gas. At this study have conducted modeling, manufacturing and testing a biomass gasification stove. The stove have 74.5 cm total height, 42 cm burner height, 16.5 cm diameter dan ash hopper . The results of eksperiment using rubber wood and cob as fuel showed stove could produce flame 30 until 40 minute with 4 until 6 for one bed fuel, the time for boiling water are 4 until 6 minute.
Pengaruh Jarak Sumber Jet Terhadap Temperatur Dinding Selinder Kaprawi
Jurnal Rekayasa Mesin Vol. 9 No. 2 (2009): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v9i2.15

Abstract

Free jet flow coming out from a rectangulaire orifice has temperature higher than than the ambient. This flow attack a cilynder so the wall temperature of cilynder will increase. The results show that the small temperature gradient at cilynder wall occur when the cilynder is palced far from the orifice. Near the orifice or jet source so great temperature gradient occur at the front wall of the cilynder. While at the back wall, starting from the separasion region, the temperature gradient is not high. The wider of orifice cross section the smaller temperature of waal cilynder.
Pemesinan Nonkonvensional Plasma Arc Cutting Al Antoni Akhmad
Jurnal Rekayasa Mesin Vol. 9 No. 2 (2009): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v9i2.16

Abstract

In machining process known 2 kind machining process, conventional machining and nonconventional machining. Plasma Arc Cutting is example nonconventional machining.Plasma Arc Cutting so many used in all of kind industry that use metal as raw material. In Plasma Arc Cutting there are many kind of torch. Every torch has spesifik characteristic and spesific funtion.
Sifat Mekanik Baja Karbon Rendah Akibat Variasi Bentuk Kampuh Las dan Mendapat Perlakuan Panas Annealing dan Normalizing Nukman
Jurnal Rekayasa Mesin Vol. 9 No. 2 (2009): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v9i2.17

Abstract

Low carbon steel represent one of material which is generally used in a machine component. It has good formability and machineability, and also having the nature of able to good welding ability. Because welding can causing the happening of change metallurgi at metal, deformation and tension termal. To increase strength of extension welding that is through hot treatment by Annealing And Normalizing. The ultimated stress of specimen, highest owned by non-welding non-heat treatment (= 53,24 kgf/mm2 by e = 5,552%). The highest ultimated stress of welding specimen owned by double type V (X) weld - normalizing specimen ( = 52,85 kgf/mm2). This matter effect of level wide surface weld formed by double type V (X). The ultimate stress of nonwelding non-heat treatment specimen, highest tension is  = 11,7504 kgf/mm2. Bending test for the welding specimen, highest tension owned by spesimen Normalizing – Square type  (I) ( = 12,4032 kgf /mm2).
Analisis Sensitivitas pada Pipa Besi Cor Dengan Retakan Kearah Melingkar Pipa Gunawan
Jurnal Rekayasa Mesin Vol. 9 No. 3 (2009): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v9i3.43

Abstract

Effect of pressure in the pipe at the rate of leakage from the pipe which is one of the main factors affecting the leak still not adequately understood. In this study conducted in the case of uni-axial stress and bi-axial with finite element method to pipe with a circumferential cracks. Flow rate of crack calculated by the equation torricolli. Exponential component crack for uni-axial tension will decrease if the crack length increases. While the bi-axial pressure, the opposite occurred. So that cracks will tend to open when the crack length increases and the crack length direction of the circular will have more surface area to open the cracks. Keywords : pipe, circumferential, crack

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