cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
A. Grummy Wailanduw
Contact Email
grummywailanduw@unesa.ac.id
Phone
+6285730235172
Journal Mail Official
jurnalotopro@unesa.ac.id
Editorial Address
Jurusan Teknik Mesin Fakultas Teknik Universitas Negeri Surabaya Gedung A6 Kampus UNESA Ketintang Surabaya 60231 Telp. (031) 8299487, Fax. (031) 8292957
Location
Kota surabaya,
Jawa timur
INDONESIA
Otopro
Published by Universitas Negeri Surabaya
ISSN : 1858411X     EISSN : 26857863     DOI : http://dx.doi.org/1026740/otopro
Core Subject : Science, Engineering,
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Jurnal Otopro diterbitkan 2 (dua) kali setahun yaitu bulan Mei dan November oleh Jurusan Teknik Mesin, FT-UNESA, sebagai media informasi dan forum kajian masalah ilmu Teknik Mesin. Berisi tentang tulisan ilmiah, ringkasan hasil penelitian, pembahasan kepustakaan dan gagasan kritis yang orisinil. Redaksi mengundang para ahli, praktisi, dan siapa saja yang berminat untuk menyumbangkan tulisan yang belum pernah diterbitkan dalam media cetak lain, tema tulisan meliputi: Permesinan, Konversi Energi, Material dan Metalurgi, Manufaktur, Rancang Bangun Mesin
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 5 Documents
 1 
Search results for , issue "Vol 15 No 2 Mei 2020" : 5 Documents clear
PERAWATAN PREVENTIF MESIN BUBUT MENGGUNAKAN METODE ANALISIS GETARAN DALAM BERBAGAI KONDISI KECEPATAN SPINDLE Heryanto Budiono Soemardi
Otopro Vol 15 No 2 Mei 2020
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v15n2.p40-44

Abstract

This research proposes a new idea of the preventive maintenance method of the lathe by analyzing the vibration on the fixed gear gearbox of the Maximat lathe. From the results of the vibrations that occur, checks are carried out on the lubricating oil, disability of the existing gears and bearings, and then repairing the gear and bearing and replacing the lubricating oil. To find out the magnitude of vibration that occurs in this maximat lathe, rotation variations are carried out by 1000 (rpm), 1500 (rpm) and 2000 (rpm). The highest average amplitude value at 1000 RPM engine speed is on the Bu04 machine with a value of 0.034 mm / s RMS while the lowest value is obtained on the Bu03 lathe with a value of 0.029 mm / s RMS. At 1500 RPM engine speed, the highest average amplitude value is obtained on the Bu03 lathe with a value of 0.045 mm / s RMS. On the Bu02 lathe with a value of 0.032 mm / s RMS. At 2000 RPM engine speed, the highest average value of amplitude was obtained in the Bu03 lathe with a value of 0.069 mm / s RMS. While the lowest value obtained on the Bu02 lathe with a value of 0.050 mm / s RMS. The lower the vibration of the lathe, the more optimal the results of turning. There is an influence between the speed of the engine against the vibrations that occur. Lathe with a high amplitude level indicates that there are components that need attention
ANALISA PENGARUH AXIAL FORCE DAN ROTATIONAL SPEED PADA PROSES REPAIR AXLE SHAFT BEKAS MENGGUNAKAN FRICTION WELDING TERHADAP KETANGGUHAN AXLE SHAFT Irfan Malik Hartanto; Akhmad Hafizh Ainur Rasyid
Otopro Vol 15 No 2 Mei 2020
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v15n2.p32-39

Abstract

Increasing truck growth and a large number of failure phenomena on Axle Shaft components. Implied by an increase in shaft waste that fails, so an effort is needed to reduce it. One of the waste control methods that can be used is the repair principle. Repair is the maintenance and repair of waste that can still be used for the same function or other functions with certain businesses. The repair method carried out in this study is the process of joining the material using the friction welding process. Seeing the above phenomenon the researcher wants to know the effect of rotational speed and axial force on and toughness in the axle shaft shaft welding area. This research method uses an experimental research method with a welding process carried out on a lathe that has been added a hydraulic pressure device as an axial suppression mechanism. The results showed the greatest impact strength was found in variations of rotational speed of 1010 Rpm with the highest yield of 0.065030 J / mm² at forging pressures of 40 Kg / cm2 in weld metal areas while the lowest impact test results were generated from variations of 1800 Rpm rotational speed of 0.040970 J / mm² at forging pressure 20 Kg / cm2 in the weld metal area. So it can be concluded that rotational speed and axial pressure affect the impact strength of friction welding results
SIMULASI NUMERIK PENGARUH VARIASI RASIO PANJANG LEADING EDGE TERHADAP KARAKTERISTIK AERODINAMIKA PADA MOBIL PICK UP Md Ranasandhya Amy Pratyaksa
Otopro Vol 15 No 2 Mei 2020
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v15n2.p45-53

Abstract

The aerodynamic style influences fuel consumption due to drag and the stability of the vehicle speed due to the force lift. Varying the geometry of the leading edge is estimated to have an effect on aerodynamics. This study uses a car pickup model with dimensions like the actual size. Geometry Leading Edge can be modified so that in the variation of the ratio of length leading edge of the vehicle's overall length ( ): ; and . The research method used is a 2-D numerical simulation underconditions steady and unsteady using software ANSYS FLUENT 2019 R3. The mesh using Hybrid model, its triangular and rectangular shape. The viscous model used by k-epsilon Realizable with variation Reynolds Number 7.15 x 104; 2.6 x 106; 3.26 x 106 and 3.91 x 106. The result data analyzed are coefficient lift (CL), coefficient drag (CD), velocity contour, velocity streamline, and pressure contour. From the simulation results, varying ratio of the length of leading edge can affect aerodynamic characteristics of the car. The greater leading edge ratio can delay separation above the car. In addition, the momentum deficit behind the vehicle is also getting smaller. Variation of the length ratio of leading edge is the best variation, having a coefficient drag (CD) of 0.72 with a percentage decrease of 4% and a coefficient lift (CL) of 0.07 with a reduction percentage of 36.36% of the standard variation. CD and CL values go down making fuel consumption more efficient and the car more stable.
ENERGI KONSERVASI PADA POMPA SENTRIFUGAL DENGAN TORQUE FLOW IMPELLER SEMI OPEN DAN CLOSED PADA PENGATURAN KAPASITAS Indra Herlamba Siregar
Otopro Vol 15 No 2 Mei 2020
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v15n2.p54-58

Abstract

Pumps are the most widely used rotating equipment in both the domestic and industrial sectors with a contribution of around 3% of the world's electrical energy usage, in addition to the size of pumps available with many incompatible requirements, it is necessary to regulate their capacity. In this article, there are two capacity setting methods tested, namely valve opening and variable speed drive on semi open and closed centrifugal pump torque flow impeller with blades of 7, 8 and 9. The results explain that in valve opening method the number of blades affects the power consumption pump electricity, although not significant enough, while the variable speed drive method, the number of blades has no effect. However, the power consumption of the impeller closed is lower than the semi open impeller in the valve opening method and there is no significant difference in the variable speed drive method. The capacity setting method with a variable speed drive consumes less electric power than the valve opening method, if the flow of pump more decrease from the initial condition the greater the savings obtained with the variable speed drive method than the valve opening method.
PENERAPAN TTG MESIN PENGADUK JELADREN DAN RISOPAN JUMBREK DI IKM PACIRAN LAMONGAN Muhaji Muhaji
Otopro Vol 15 No 2 Mei 2020
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v15n2.p59-63

Abstract

The purpose of this activity was designed, (1) make and apply a mixer jeladren machine and risopan jumbrek, (2) to improving productivity and jumbrek higine cake. Based on studies conducted in smes and observation, partner smes make jeladren mixer machine with a stinless stell with an electric motor. So are risopan made of plate stainless steel. The outcome of the activities PKM shows that machine mixer jeladren jumbrek and risopan jumbrek physically cunstruction machines and instrument very good, stout, practical. The results of the tryouts machine jeladren mixer jumbrek pointed out once mixer as 10 kg with 12,5 minutes the average time, so as to mixer material 40 pouns  needed time 50 minutes. While  with human resources for mixer 40 pounds of (necessary 8 times mixer in the 200 minutes), thus time mixer 4 times faster. The results of the tryouts risopan jumbrek pointed out in time capable of producing 140 seeds  jumbrek/30 minutes. Increase the result of long with new risopan 5 times.

Page 1 of 1 | Total Record : 5

 1 

Filter by Year

2020 2020


Reset
Filter By Issues
All Issue Vol 21 No 1 Nov 2025 Vol 20 No 2 Mei 2025 Vol 20 No 1 Nov 2024 Vol 19 No 2 Mei 2024 Vol 19 No 1 Nov 2023 Vol 18 No 2 Mei 2023 Vol 18 No 1 Nov 2022 Vol 17 No 2 Mei 2022 Vol 17 No 1 Nov 2021 Vol 16, No 2 (2021) Vol 16 No 2 Mei 2021 Vol 16, No 1 (2020) Vol 16 No 1 Nov 2020 Vol 15 No 2 Mei 2020 Vol 15, No 2 (2020) Vol 15, No 1 (2019) Vol 15 No 1 Nov 2019 Vol 14, No 2 (2019) Vol 14 No 2 Mei 2019 vol 14 No 1 Nov 2018 Vol 13 No 2 Mei 2018 Vol 13 No 1 Nov 2017 Vol 12 No 2 Mei 2017 Vol 14, No 1 (2018) Vol 13, No 2 (2018) Vol 13, No 1 (2017) Vol 12, No 2 (2017) More Issue