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A. Grummy Wailanduw
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grummywailanduw@unesa.ac.id
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+6285730235172
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jurnalotopro@unesa.ac.id
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Jurusan Teknik Mesin Fakultas Teknik Universitas Negeri Surabaya Gedung A6 Kampus UNESA Ketintang Surabaya 60231 Telp. (031) 8299487, Fax. (031) 8292957
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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 6 Documents
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Search results for , issue "Vol 17 No 2 Mei 2022" : 6 Documents clear
RANCANG BANGUN TURBIN KINETIK SUDU BERENGSEL LUAR SEBAGAI PEMBANGKIT LISTRIK SKALA PIKOHIDRO Silvy Dollorossa Boedi; Alfred Noufie Mekel; Adrian Maidangkay
Otopro Vol 17 No 2 Mei 2022
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v17n2.p69-75

Abstract

The problem of energy shortages is still a global problem which is especially felt in developing countries whose residents live in villages, which still require the development of more efficient energy sources. The problem of meeting the availability of electricity in rural areas by utilizing water energy as new and renewable energy is a long-term goal in this research.  The goal is to obtain the value of the turbine power from the turbine design which is designed to later be able to fulfill a picohydro scale power plant. The current research on kinetic turbines is a combination of two types of waterwheels, which have a vertical axis (overshot turbine and pusher turbine). Most water turbines have fixed blades. In this research, the target of the novelty is a kinetic turbine with a vertical shaft which has a hinged blade. Hinged blades are blades that can move when the flow of water hits the blades, so that on one side of the turbine it will reduce negative torque and on the other hand it will increase turbine rotation. The results of the research that became the target were to obtain a turbine design that has more optimal turbine power and efficiency, compared to a turbine that has a fixed blade, so that this externally hinged blade kinetic turbine can contribute to the provision of rural electrical energy. The optimum value in this study is the number of blades 10 and turbine power 59.01 Watt.
RANCANG BANGUN ALAT DESALINASI AIR LAUT SKALA LAB TIPE MULTI STAGE FLASH Dwi Rahmalina; Erlanda Augupta Pane; Raka Chandra Herdyana; Dio Pratama Dirgahayu Putra; Reza Abdu Rahman
Otopro Vol 17 No 2 Mei 2022
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v17n2.p48-56

Abstract

Desalination is a water treatment process to separate salt from a salt solution to produce drinking water or water with low TDS. The technology used uses Thermal Energy as a heat source using the Phase Change Material (PCM) principle. This research uses the Pahl-Beitz design method. The results of the design are based on the value of the variant in variant 1 is 3.36, variant 2 is 3.22 and variant 3 is 3.14, and the selected value is variant 1 with a weight value of 3.36. The selected variant is tested for strength against heat on the components to ensure it is safe and can be carried out in the manufacturing stage. The process of making seawater desalination tools is carried out using the DFMA design method, each process of working on the tool refers to the Standard Operation Procedure that has been determined and the assembly process is carried out sequentially according to the Operation Process Chart. The manufacture of seawater desalination equipment is carried out by many processes, from material cutting to welding and component assembly. The data from the calculation analysis on the pipe, obtained the axial stress value of 3811.96kN/m2. The results of the calculation of stress due to pressure in the pipe of 317.5kN/m2 circumferential stress of 635kN/m2. The minimum thickness of the pipe is 2.0875mm. the calculation of the circular pipe flow velocity is 9.96m/s. The components in this tool consist of a seawater desalination tool with 41 stages of the process.
RANCANG BANGUN DAN UJI COBA ENGINE CLEANER SEBAGAI PENUNJANG PRAKTEK TEKNOLOGI MOTOR BENSIN Sumardi Sumardi; Soleh Soleh; Okky Ardiansyah Prabowo
Otopro Vol 17 No 2 Mei 2022
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v17n2.p33-37

Abstract

Overhaul is one of the activities carried out to restore engine performance so that it appears close to its previous condition both in terms of power and fuel consumption. In carrying out an overhaul, ideally, the engine components must first be cleaned of scale and dirt. Referring to these problems, the purpose of this research is to design an engine cleaner technology which is used as an alternative solution. Through the engine cleaner, the gasoline waste from the rinse will be processed so that it does not pollute the environment. This research is a design type which is carried out by considering several factors such as design, strength, ergonomics, material requirements and cost. The research data analysis technique refers to quantitative descriptive. The research data is then presented in the form of a bar chart according to predetermined indicators to measure the efficiency and quality of the engine cleaner. Based on the results of the research, the engine clear technology functions according to the design results. In addition, in terms of convenience and usefulness, both lecturers and students are greatly helped by this technology so that in the process of cleaning machine components. Thus, the process of cleaning the components of the practicum machine is cleaner than cleaning manually.
SIMULASI PARAMETER PENGELASAN GESEK ROTARI PADA AL ALLOY 6061 T-6 DAN AISI 1018 DENGAN FINITE ELEMENT METHOD (FEM) Muhammad Irfan Maulana; Akhmad Hafizh Ainur Rasyid
Otopro Vol 17 No 2 Mei 2022
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v17n2.p38-47

Abstract

Rotary Friction Welding is a welding process that is carried out to connect metal materials in the form of a cylinderby means of friction against the two materials to be joined by applying pressure.  Therefore, researchers are interested in conducting simulations based on the finite element method with FEM software to solve the problem. The purpose of the simulation is to analyze the results of rotational speed, axial pressure, forging pressure and welding time. Parameters were analyzed for stress-strain values, temperature distribution and displacement visualized through contours.  The parameters used are 2.5 MPa axial pressure, 4 MPa forging pressure and 1500 RPM rotational speed and welding time of 10 seconds. Simulation data shows that the stress strain analysis obtained a strain of 1.8 and a stress of 315 MPa, the displacement value was 5.2 mm and the temperature distribution value was 582ᴼC with the axial and forging pressure welding parameters 2.5 MPa, 4 MPa, rotational speed 1500 RPM with a welding time of 10 seconds. The research validation can be said to be valid because it has fulfilled the tensile strength value of 305 MPa in the tensile test based on the value of the mechanical properties of Aluminum alloy with a margin of error of 1.61%<5%. The connection results are said to be valid because they have been analyzed and then validated to meet the standard mechanical properties that have been determined by the researcher so that the welding parameters used can be recommended to be done experimentally.
SIMULASI PEMBEBANAN PADA RANGKA MESIN FUNGSI HYBRID PENGUPAS BIJIH JAGUNG BERBASIS ELEMEN HINGGA SUKENDRO SASONGKO; HERI IRAWAN; Hanif Fakhriawan Zany
Otopro Vol 17 No 2 Mei 2022
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v17n2.p57-61

Abstract

Preliminary investigation obtains that the elevation of the machine of about 150 cm ease man while operating the machine.  Free body diagram illustrates forces distribution on the supporting frame. Thus, virtual simulation of forces to the supporting frame applies finite element method to the stage investigating to load and stress-strain. Stress and displacement are investigated by using Von Misses method. Principal stress 1st order and 3th order also are applied for investigating stress -strain. The simulation results are revealed F1 = 17 lbf (68.6 N) and F2 = 11.023 lbf (49,03 N). The maximum stress appearing at the frame of machine is about of 0,09 Mpa. Displacement reaches maximum is at 0,01 mm. By applying safety factor to the machine frame, maximum stress to the machine frame is obtained 0,69 Mpa. So that, 1% displacement performs the machine frame is strong enough to support the machine. The timing process efficiency of multitasking machine is increase 15% higher than single tasking machine.
REDESAIN BODI SEPEDA MOTOR LISTRIK BABY GANESHA 1.0 GENERASI II DAN PENGARUHNYA TERHADAP PENURUNAN COEFFICIENT OF DRAG Muhammad Khoirul Makhbub; I Gede Wiratmaja; Kadek Rihendra Dantes
Otopro Vol 17 No 2 Mei 2022
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v17n2.p62-68

Abstract

The aerodynamic aspect is an aspect that really considers the force generated by the fluid flow which has an impact on performance and energy consumption while driving. The purpose of this research is to modify the standard design of the baby ganesha 1.0 generation II electric motorcycle so that it gets a design with a smaller coefficient of drag. The need for fluid flow simulation analysis To determine the coefficient of drag, one way of simulation analysis is to use solidwork, solidworks is known to have the speed and accuracy required for a successful analysis. The conceptual research paradigm R2D2 (Reflective, Recursive, Design and Development) is used to conduct research and development. Development (R&D). After the fluid flow analysis process was carried out, it was found that the modified body design of 2 baby Ganesha 1.0 generation II electric motorcycles obtained a Coeficient Of Drag of 0.0372 lower than the standard body design of Baby Ganesha 1.0 generation II electric motorcycles which only had a coefficient value. of drag is 0.0433. Through expert judgment, the modified design of 2 Baby Ganesha 1.0 generation II electric motorcycles received a percentage with a value of 82% with good qualifications.

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