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INDONESIA
Jurnal Teknik Mesin Indonesia
Published by Badan Kerja Sama Teknik Mesin
ISSN : 1907350X     EISSN : 25977563     DOI : -
Core Subject : Engineering,
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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Analisis deformasi pada coupling element dari automatic mechanical coupler: studi kasus LRT Palembang Achmad Syaifudin; Betti Mawar Kalista; Agus Windharto
Jurnal Teknik Mesin Indonesia Vol 14 No 2 (2019): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (586.576 KB) | DOI: 10.36289/jtmi.v14i2.132

Abstract

Coupler is a mechanical component that used to connect one carbody to another. The resistance to exceptional load and the endurance to normal load become the important parameter of safety in the operation. This study aims to conduct deformation analysis numerically on coupling element of automatic mechanical coupler, which is utilized for light rail transit (LRT), based on actual operational loads. The component of coupling element observed is coupling link and hooked plate. An 3D solid model is developed without any geometric simplification in order to acquire actual phenomenon. Material used in this study is stainless steel that having isotropic behavior and following ASTM standard of A633 Grade E. Three type of simulations are applied, i.e. static and transient simulation, to obtain static and dynamic safety factor of coupling element, and fatigue simulation based on three transient loading modes, to obtain the life cycle of coupling element. The simulation results reveal that the observed coupling element is safe from subjected exceptional and normal service loads. Moreover, the simulation indicates that the critical component based on maximum von Mises stress and life cycle is coupling link and hooked plate, respectively.
Studi visualisasi pola aliran dua fase air-udara pada vertical upward circular mini-channel Zulfikar Mahmud; Budi Santoso; Dominicus Danardono
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.v13i2.99

Abstract

Two phases flow was important phenomenon in the industrial or engineering factories. Especially, the small or mini-channel was applied in the heat exchanger devices such as compact head exchanger and refrigeration evaporator/condenser. The circular transparent mini-channel with 2,5 mm and 5 mm inner diameters were used in this experiment. The flow pattern was identified. Bubble, slug, churn and annular were formed in vertical upward air-water flow. Bubbles flow pattern had elongated air-phase form with no aeration at the end air-phase. The flow pattern was plotted and analysed by flow pattern map in previous research. Actually, the new flow pattern map was reformed for 2,5 and 5 mm inner diameter pipe because of flow pattern map differences with the reference research. Both flow pattern maps had similarity form about mini-channel flow patern map.
Magnetorheological elastomers berbasis lateks cair sebagai matriks utama Virel Wibawa; U Ubaidillah
Jurnal Teknik Mesin Indonesia Vol 14 No 2 (2019): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (673.639 KB) | DOI: 10.36289/jtmi.v14i2.133

Abstract

This study tells about isotropic MRE with latex as the matrix, variation on the mass fraction of CI particle (wt%) and evaluate the following characteristics, such as density, hardness, break stress, elongation and swelling of the variation ratio mixture of MRE with the latex matrix. In this study use 0, 30, 40, 50, 60 and 70 wt% as the MRE composition, held in Laboratorium Pusat Penelitian Karet Indonesia which has the standardized rubber testing in yield strength, hardness and swelling in Indonesia. Pure latex with 0,94 gr/cm3 in density, improvement above 100% happens when CI particle added as much as 40%. The amount of CI particle made the rising of hardness point as much as 15 point from 35 when CI particle added as much as 70%. The add of CI particle cause a decresing of tensile stress, it’s seen when pure latex has 14,5 MPa in tensile testing and breakdown until 760%. When CI particle added as much as 70%, the break stress decrease until 2 MPa and the breakdown in 610%. Volume changes when the pure latex sink in the ASTM OIL 3 liquid, the volume increase as much as 167,94% and still increase almost 100% in 305,97% when CI particle 70% added.
Perancangan mesin penghancur sekam padi dengan poros penggerak horisontal Ahmad Suudi; Novri Tanti; Jamiatul Akmal; Zulhendri Hasymi; Prasetyo Budiyanto
Jurnal Teknik Mesin Indonesia Vol 14 No 2 (2019): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (351.592 KB) | DOI: 10.36289/jtmi.v14i2.115

Abstract

Husk is a waste from the grinding process with the characteristics of a hard, scaly and dry layer. In the rice milling process, according to the Agricultural Research and Development Agency, the Department of Agriculture obtained 20-30% of rice husk, 8-12% of bran and 50 - 63.5% of milled rice. It can be seen that the amount of waste produced is predominantly dominated by rice husk and if not handled it will be a problem for the environment. One effort to reduce the form of waste was carried out research design of rice husk grinding machine become powder. The implementation method starts with designing, manufacturing and testing. The design of the grinding machine is planned to use a fuel motor drive, the transmission uses a V belt and the type of grinder is a combination of discmill and hammermill.The results of research and design obtained rice husk grinding machine with specifications dimensions of 1100 mm high, 400 mm long and 500 mm wide, Hyundai gasoline engine drive HDE 390 with power 7.6 kW, elbow profile frame 50 mm x 50 mm, belt transmission and pulley with a ratio of 1: 1, a combination milling mechanism namely hammer mills which have 3 single hammer attrition mills and a front through grinder with the help of screw conveyor components. The test results of the grinding machine capacity obtained a production capacity of 10 kg / hour, and fuel consumption which is 2.162 liters / hour.
Identifikasi Tegangan pada Permukaan Karet SBR-25 saat mengalami Kontak Abrasi: Investigasi Numerik Budi Setiyana; J Jamari; Haryanto Ismoyo; M Munadi
Jurnal Teknik Mesin Indonesia Vol 14 No 2 (2019): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (939.426 KB) | DOI: 10.36289/jtmi.v14i2.135

Abstract

Wear due to abrasion on components made of rubber-like material such as on a vehicle tire or seal strongly determines the service life of these components. In rubber material, when the surface is still smooth experiencing abrasion contact, it will form a ridge shaped on abraded surface in a parallel direction perpendicular to the direction of motion of the abrasion. The ridge shaped of the abraded surface will be continuously formed during the abrasion process. Abrasion wear occurs due to stress on the rubber material beyond the fracture stress of the material. However, the analysis of abrasion wear on rubber is still very difficult to discuss analytically due to the non-linear and hyper-elastic properties of rubber material. Using a numerical method, this paper discusses the stresses that occur on the abraded rubber surfaces of SBR-25. As a preliminary study, the analysis was carried out in two dimensions using commercial software ABAQUS 6.14-5 by modeling the rubber in contact with a single rigid indenter. Simulations are carried out with variations in indentation depth, surface roughness and ridge (chip) dimensions. In general, the results show that the large indentation depth and surface roughness increase the maximum stress value. On the other hand, the location of the maximum stress (critical stress) is also strongly influenced by indentation depth, surface roughness and dimensions of the chip.
Analisis dan optimasi struktur sasis bus dengan batasan tegangan maksimum dan defleksi pada beban maksimum Ojo Kurdi; Ismoyo Haryanto; Agus Suprihanto; Ian Yulianti; Nur Aziyah
Jurnal Teknik Mesin Indonesia Vol 14 No 2 (2019): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (622.64 KB) | DOI: 10.36289/jtmi.v14i2.139

Abstract

Chassis is an important part of a vehicle, which forms the frame of a vehicle. Chassis must be rigid enough to withstand shock, twist, vibration and other stresses. An important consideration in chassis design is having adequate bending stiffness along with strength for better handling characteristics. Therefore the maximum stress, and deflection are important criteria for chassis design. The purpose of this study is to determine the most optimum design of the three chassis designs of type C, I and Rectangular Box (Hollow). Get the minimum chassis thickness in the Rectangular Box (Hollow) type bus chassis from the ASO and MOGA optimization methods. And comparing the results of the optimization obtained from the two optimization methods. In this study, two types of software were used, namely CAD software (SOLIDWORKS 2015) for the manufacture of bus chassis models and Finite Element Analysis software (ANSYS Workbench v.16) to simulate structural static loading and optimization. The results of this study indicate that the maximum stress occurs in the cross section C with a stress of 73.235 Mpa, and a deflection of 1.5455 mm. The results of the static load analysis show that the design of the type Rectangular Box (Hollow) is far more optimal than type C or I. Based on the optimization on the Rectangular Box (Hollow) type bus chassis with the two methods, the best results use the ASO method with an optimum mass value of 682, 57 kg (mass reduction percentage of 1.224%) with equivalent (von-misses) stress of 53.557 MPa and total deformation of 1.1847 mm. While the results of the optimization of the MOGA method, the optimization mass value of 686.83 kg with equivalent (von-misses) stress of 53.517 MPa and the total deformation was 1.1809 mm. There was a decrease in mass of 0.608%.
Development of the profile cross-sectional model of lightweight steel structure to improve the value of stiffness Sugiharto Sugiharto; Rachmad Hartono; Bukti Tarigan
Jurnal Teknik Mesin Indonesia Vol 15 No 1 (2020): 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.v15i1.150

Abstract

Baja struktur ringan adalah baja profil yang dibentuk dari pelat baja tipis hasil pengerolan dingin sehingga profil baja tersebut berbobot ringan dan tipis. Kekuatan tarik baja struktur ringan memiliki nilai yang sama dengan dengan kekuatan tarik baja sejenis. Kekuatan struktur baja ditentukan oleh kekakuan dan fleksibilitas strukturnya. Kekakuan adalah gaya yang diperlukan untuk menghasilkan perpindahan, sedangkan fleksibilitas adalah defleksi yang dihasilkan oleh gaya yang diberikan. Defleksi yang terjadi pada suatu batang ditentukan oleh nilai inersia penampang batangnya. Kekuatan struktur yang disusun oleh baja profil struktur ringan, dibentuk dari tingkat kekakuan profil penyusunnya, semakin kaku profilnya maka akan semakin kuat struktur yang disusun oleh profil baja struktur ringan tersebut. Pada kajian ini akan diuraikan suatu proses penelitian untuk peningkatan nilai kekakuan pada profil baja struktur ringan dari bentuk dan ukuran profil menurut standar SNI-1729:2015. Peningkatan nilai kekakuan dilakukan dengan mengembangkan model dari bentuk penampang profilnya, peningkatan kekakuan ditinjau dari besar defleksi yang terjadi pada saat diberikan beban lenturan. Hasil analisis menunjukan pengembangan model penampang yang dilakukan pada profil baja struktur pada ketebalan pelat yang sama dapat menurunkan defleksi yang terjadi dibawah beban lentur yang sama.
Review dan Analisis Degister Tank dengan fluida POME Berdasarkan API 650 Menggunakan Variable Design Point Method Hana Hermawan; Winda Wulandari
Jurnal Teknik Mesin Indonesia Vol 15 No 1 (2020): 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.v15i1.138

Abstract

POME is a by-product of palm oil production with a ratio contained in palm oil of 58.3%. POME can be used as biogas with anaerobic processing technology using a Continuous Stirred Tank Reactor (CSTR). The purpose of this study is to review and analyze the digester tank with POME fluid based on the American Petroleum Institute standard, API 650: Welded Steel Tanks for Oil Storage using a variable design point method to determine the minimum thickness of each shell depending on its depth, so that each shell can have different thickness so as to reduce the volume of material and cost. Then simulations are performed with the finite element method with a load of hydrostatic pressure that produces a maximum stress of 154.88 MPa, and a maximum deformation of 5 mm and a load of wind force that produces a maximum stress of 1.31 MPa, and a maximum deformation 0.5 mm, then compared with the mechanical properties of the material that yield strength occurs at a voltage of 250-395 MPa so that the thickness of the calculated shell is safe. Then compare the minimum thickness calculation results with the construction design which results are the construction design has a thickness that is greater than the minimum thickness calculation so that the construction design that will be used is safe.
Pengaruh preheat terhadap kekuatan tarik dan kekerasan vickers sambungan metal inert gas (MIG) pada baja karbon rendah Muhammad Taufiq; Wartono Wartono; Daru Sugati
Jurnal Teknik Mesin Indonesia Vol 15 No 1 (2020): 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.v15i1.151

Abstract

Kajian ini bertujuan untuk mengetahui pengaruh preheat terhadap kekuatan tarik dan kekerasan vickers sambungan Metal Inert Gas (MIG) pada baja karbon rendah, serta mengetahui pengaruh terbesar terhadap sifat mekanis dan struktur mikro setelah pengelasan. Metode pengelasan menggunakan pengelasan Metal Inert Gas (MIG) posisi mendatar atau flat, dengan spesimen plat strip baja karbon rendah dan kampuh V sudut 60°, variasi yang digunakan dalam kajian ini adalah variasi suhu preheat 100 ̊C, 200 ̊C, 300 ̊C dan non-preheat. Nilai kekerasan vickers tertinggi dimiliki oleh suhu preheat 2000C dengan nilai kekerasan vickers sebesar 206,674 kg/mm2 dan nilai kekerasan vickers terendah adalah preheat 3000C dengan nilai kekerasan vickers sebesar 158,405 kg/mm2. Spesimen pengujian tarik dengan variasi suhu preheat 2000C memiliki kekuatan tarik terbesar yakni rata-rata adalah 54,87 Kgf/mm2 dan spesimen pengujian tarik dengan variasi suhu preheat 3000C memiliki kekuatan tarik terendah dengan nilai rata-rata adalah 44,31 Kgf/mm2.
Correlation of spindle speed on the outer thread precision of magnesium AZ31 Gusri Akhyar Ibrahim; Arinal Hamni; Sri Puji Maria
Jurnal Teknik Mesin Indonesia Vol 15 No 1 (2020): 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.v15i1.146

Abstract

Pengembangan magnesiun telah dilakukan di berbagai bidang, salah satunya adalah bidang kedokteran sebagai material tanam (implant) di dalam tubuh. Material ini digunakan karena sifatnya yang sangat mirip dengan tulang dan bersifat mampu degradasi di dalam tubuh serta tidak bersifat racun. Kajian ini bertujuan untuk mendapat korelasi kecepatan putaran spindel terhadap tingkat kesalahan puncak ulir, sudut ulir dan jarak puncak ulir. Pengujian dilakukan menggunakan mesin CNC bubut dan material yang digunakan adalah magnesium AZ31. Parameter pemesinan dipilih adalah kecepatan putaran spindel 212, 318 dan 424 rpm, sedangkan kedalaman potong adalah sebesar 0,324761, 0,433015 dan 0,649523 mm. Tingkat kesalahan ulir diukur menggunakan profil proyektor dengan cara melewatkan cahaya pada benda kerja dan kemudian membaca ukuran. Kajian ini menunjukan bahwa nilai kesalahan tinggi puncak ulir berkurang dengan peningkatan kecepatan putaran spindel benda kerja, di mana nilai kesalahan terkecil adalah sebesar 0,018188 mm, yang diperoleh pada parameter kecepatan spindel 424 rpm dan kedalaman potong 0,433015 mm. Sedangkan peningkatan kecepatan putaran spindel secara signifikan memperbesar kesalahan jarak puncak ulir, di mana nilai kesalahan terbesar mencapai 12,9% yang terjadi pada kecepatan putaran spindel 318 rpm. Demikian juga profil permukaan ulir terbaik yaitu dengan sedikit permukaan berlubang, chattering mark dan feed mark didapatkan pada parameter kecepatan spindel 424 rpm dan kedalaman potong 0,324761 mm, semakin tinggi nilai kecepatan spindel maka semakin kasar bentuk profil permukaan ulir.

Page 7 of 30 | Total Record : 291

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