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Jurnal Teknik Mesin Indonesia

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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 291 Documents

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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.

Karakteristik aliran dua fase pada saluran ekspansi tiba-tiba Latif Ngudi Wibawanto; Budi Santoso; Wibawa Endra Juwana
Jurnal Teknik Mesin Indonesia Vol 11 No 1 (2016): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

This research was conducted to find out the flow characteristic of two phases through the channel with sudden expansion in the form of change of flow pattern and pressure recovery. The test was carried out with variation of superficial velocity of water 0.2-1.3 m / s and superficial air velocity of 0.2-1.9 m / s resulting in pattern of three flow patterns ie bubble, plug, and slug. The expansion channel resulted in some changes to the flow pattern that originally plugs in the upstream channel into bubble in the downstream channel and the slug becomes plug. Pressure recovery experimental results compared with the homogeneous model flow equation and Wadle correlation, both correlations have predictions with standard deviation values of 0.32 and 0.43.

Analisis kekuatan tarik, kekerasan dan struktur mikro pada pengelasan SMAW yang menggunakan elektroda E 6013 dengan variasi gerakan elektroda Andri Santoso; Awal Syahrani; M Mustafa
Jurnal Teknik Mesin Indonesia Vol 13 No 2 (2018): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v13i2.96

This study aims to determine the effect of electrode motion on the mechanical properties and microstructure of SMAW welding with E 6013 electrode. The SMAW welding process uses a variety of straight, zigzag and spiral electrode movements. The electrode used is E 6013 with a diameter of 3.2 mm. The current size used is 90 Amperes. The type of camp used is a V-shaped with an angle of 60o, a root height of 2 mm and a root range of 3 mm. Tests conducted are tensile testing, hardness and microstructure observation. The highest tensile strength value in the spiral electrode motion is 616.6 Mpa and the lowest in the zig-zag electrode is 596 MPa. While the highest strain value found in the motion of zig-zag electrode is 22.91% and the lowest in the spiral electrode movement is 19.41%. For the highest modulus of elasticity is found in the straight electrode movement of 12070.02 Mpa and the lowest in the motion of the zigzag electrode is 10339,48 Mpa. The highest hardness value is in welding with zigzagging electrode movement that is 147,44 kg / mm2 and the lowest in straight electrode movement is 143,19 kg / mm2

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.

Deteksi kegagalan unbalance dan looseness pada sistem rotor dinamik menggunakan wavelet decomposition method Abdollah Abdollah; Raymundus Lullus Lambang Govinda Hidajat; Budi Santoso
Jurnal Teknik Mesin Indonesia Vol 13 No 2 (2018): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v13i2.98

Rotating machinery is widely used in industry. Rotating machinery is very important, so that defect engine or parts can disturb industrial production process. Faults that are often occured are unbalance, misalignment, looseness, bearing fault, etc. This paper discuss unbalance and looseness fault detection in rotordynamic system with speed of 600, 800, and 1000 cpm. Data collection is conducted using acquisition data with accelerometer sensor attached in vertical direction on house bearing. Vibration signal data is processed with wavelet decomposition method using Matlab 2016. Fault diagnosis is indicate using spectrum. The result show that in unbalance condition, there is a dominant peak at frequency of 1x cpm for all speed variations. While in looseness condition, there is a dominant peak at frequency of 2x cpm for all speed variations. In both conditions, amplitude of signature at each speed variation increase with the rotation speed. It concludes, wavelet decomposition method provide distinct peaks correspond to fault frequency, so that fault detection can be accurately performed.

Analisa pengaruh variasi media quenching dan penambahan silikon pada paduan al-si remelting velg sepeda motor terhadap sifat fisik dan mekanis Andi Septiadi; Teguh Triyono; Joko Triyono
Jurnal Teknik Mesin Indonesia Vol 11 No 2 (2016): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

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.

Pengaruh volume Zn terhadap kekerasan dan struktur mikro pada friction stir processing aluminium AA 1100 Alvia Restu Putra Utama; Nurul Muhayat; T Triyono
Jurnal Teknik Mesin Indonesia Vol 14 No 2 (2019): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Friction Stir Processing (FSP) is a development of FSW mechanism on surface hardening process such as in aluminium. The using of aluminium and its alloy were globally used as machining part, it because aluminium and its alloy are light and able to forming. Goal of this study are learn the effect of Zn volume on mechanical and physical properties of aluminium alloy 1100. Mechanical properties are tested by the Vickers Hardness Testing, while the physical properties are observe by macrostructures testing, microstructures testing and SEM. The variation are 22 mm3, 45 mm3, 67 mm3, 90 mm3 of Zn volume and without Zn. Rotating speed of tool, dwell time, and plunge depth are in same conditions. Observation result of SEM and mapping show that Zn were not spread well on SAZ. This condition prove by the high of Zn in the edge zone of tool by EDS observation. The result of hardness testing show that the increasing of Zn volume will increase the hardness properties. The highest result of hardness testing in FSP AA1100 is 87.5 HV with the most Zn volume variation, while without Zn is 44.7 HV.

Perancangan cetakan komponen holder sepeda motor dengan pendekatan metode elemen hingga Andreas Hartoyo Yaputra; Sri Raharno; Yatna Yuwana Martawirya
Jurnal Teknik Mesin Indonesia Vol 14 No 2 (2019): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Although mold modeling using finite element method has been developed since the late 1970s but the reality is still a lot of manufacturing companies in Indonesia are using the conventional method of trial and error in terms of making mold design. Based on industrial business perspective, the method of trial and error is very detrimental to the company because it takes a lot of time and expenses. Therefore this study has developed mold design modeling with numerical analysis approach to minimize process time dan cost losses. This research project uses a case study on motocyle 600 cc holder component with forging process. The purpose of this design is to determine the exact design of the mold so that the mold can be filled completely by material. In addition, to determine the tonnage required as well as a means of early detection of defects in this process. In the end of this research the geometry of mold and its parameter could be determined, requirement of press machine capacity determined at 42 tons. Furthermore, dies material needs to have melting point above 863Â° C to prevent premature failure.

Analisis pengaruh arus pengerasan dan kecepatan pengelasan terhadap lebar manik las dan distorsi pada pengelasan gas metal arc welding (GMAW) dengan sambungan tumpul SS 304 Ario Sunar Baskoro; Dhedhe Rodat Budi Prasetya; Agus Widyianto
Jurnal Teknik Mesin Indonesia Vol 14 No 2 (2019): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

In this study the influence of welding current and welding speed on weld bead width and distortion on blunt gas metal arc welding (GMAW) welding SS 304 has been carried out. The material used in this study was type 304 stainless steel (SS 304) with a butt joint configuration. The variation of GMAW welding parameters used are the welding current and the welding speed. The welding speed used are 115 A, 120 A and 125 A, while the welding speed used are 3.6 mm/s, 3.9 mm/s and 4.2 mm/s. The results of welding will be analyzed from the width of the weld bead and the distortion that occurs. Weld bead width and distortion are measured using Dino-Lite and Coordinate Machine Measure (CMM). The mean vertical displacement method is used to calculate longitudinal bending distortion and angular distortion. The results show that increasing the welding current will increase the width of the weld bead and distortion, but if increasing the welding speed will reduce the width of the weld bead and the distortion. The welding parameters of 125 A and 3.6 mm/s produced the largest upper and lower weld bead widths of 8.062 mm and 4.984 mm. The greatest longitudinal bending distortion and angular distortion are 1,748 mm and 4,076 degrees in the welding parameters of 125 A and 3.6 mm/s.

Sintesis dimensi dan analisis kinematik mekanisme empat batang dengan rantai kinematik RSSR Rahim Isnan Al Hilman; Syamsul Huda; Mulyadi Bur
Jurnal Teknik Mesin Indonesia Vol 11 No 2 (2016): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

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 â‰¤ 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.

Page 6 of 30 | Total Record : 291

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