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A. Grummy Wailanduw
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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 18 No 1 Nov 2022" : 6 Documents clear
ANALISIS PENGARUH ALKALISASI NaOH TERHADAP SERAT NANAS SEBAGAI PENGUATAN BIO KOMPOSIT edi widodo; Ilham Dwiyoga
Otopro Vol 18 No 1 Nov 2022
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v18n1.p1-6

Abstract

This research focuses on the utilization of natural fibers as a reinforced composite material from pineapple leaf fiber with concentrations of Alkali NaOH 5%, 10%, 15% using a polyester resin matrix. In this study, the experimental design uses the printing method, which aims to design experiments to analyze experimental data, and is also used to determine the minimum number of experiments obtained and provide information on factors that affect parameters. The experiments were carried out through 1) Composite manufacturing method, 2) NaOH liquid preparation, 3) Tensile test method, 3) FTIR test method, 4) Fiber molding. The results of the research using FT-IR (Fourier Transform Infared Spectroscopy) test data can be evaluated into specific functional groups found in each branch of the Pineapple Leaf fiber, respectively, namely fiber with 5%, 10%, 15% NaOH treatment. The results showed that the specimen with 50% treatment, where the tensile strength value was 129 N/mm2 and the maximum load was 19.85 N, and the elongation in the area of the highest tensile test load was obtained in specimen 2, namely 10% treatment with a value of 3.29 mm so that there was the influence of the fiber strength value received on the treatment of NaOH compounds, if the NaOH compound is less then it has a little effect on the pineapple leaf fiber, while the more NaOH compound has the better received effect with a high percentage yield.  
RANCANG BANGUN FUEL FLOW METER UNTUK MENGUKUR KONSUMSI BAHAN BAKAR MESIN SEPEDA MOTOR EMPAT LANGKAH Yelma Dianastiti; Anggara Ardiyanta; Wahyu Cahyadi; Warju Warju; Muhammad Pratama
Otopro Vol 18 No 1 Nov 2022
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v18n1.p13-17

Abstract

In general, in knowing the fuel consumption of a motorcycle, motorcycle owners do this by looking at the fuel indicator on the instrument panel marked "F" meaning full, and "E" emergency. However, in the context of learning, these conditions make it difficult for students to read how much vehicle fuel consumption is viewed at each engine rotation (RPM). Referring to these conditions, the need for a fuel consumption meter is absolute. Therefore, the main objective of this research is to produce a fuel flow meter that can function properly to measure motorcycle fuel consumption so that it can be used as a support for gasoline motorbike technology lectures at the Automotive Technology Vocational Education Study Program) Universitas Bhinneka PGRI. This type of research is experimental research. The research object is the 2005 Honda Supra Fit. The standard for measuring fuel consumption is based on SNI 7554:2010 standards. Data analysis used a quantitative descriptive method. Research equipment and instruments used are a fuel meter, stopwatch, tachometer, and blower. The results of this study indicate that the fuel flow meter functions well in measuring fuel consumption. When calculated, from idle to high speed, there is an average increase in fuel consumption of 0.11 liters/hour or 41% at every RPM. This shows that the fuel flow meter can be used as a support for gasoline engine technology lectures.
SIMULASI KARAKTERISTIK AKUSTIK MENGGUNAKAN APLIKASI METODE ELEMEN HINGGA PADA MATERIAL KOMPOSIT HAZELNUT, PINEAPPLE, ALUMINIUM YANG DIGUNAKAN SEBAGAI KAMPAS REM PADA SEPEDA MOTOR Rinaldo Dalimunthe; Ikhwansyah Isranuri; Rizky Ramadhan
Otopro Vol 18 No 1 Nov 2022
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v18n1.p23-32

Abstract

Brake pads are an important factor in braking, so it is necessary to study the noise and acoustic characteristics of the brake pads using the acoustic simulation method to obtain sound pressure level results, determine the acoustic characteristics of the simulation, compare the noise results in the simulation with experimental testing. The simulated composite brake lining material uses a composition of hazelnut shell, pineapple leaf fiber, aluminum, polyurethane. Researchers used simulations with the application of the finite element method in the form of 3D modeling to analyze the parameters applied. The parameters are material data, mesh size, acoustic region, physics region, force, mass source. The simulation results of the acoustic characteristics of composite brake linings with a load of 500grams obtained a minimum noise at 500rpm rotation with a distance of 15cm of 3.88dB and the maximum noise occurs with a load of 750grams at 900 rpm rotation with a distance of 5cm of 11.54dB. The average sound pressure level value using the simulation method is smaller than the experimental method at 500rpm, 700rpm, 900rpm, a load of 500grams and 750grams, a distance of 5cm, 10cm, 15cm. This could be caused by parameters that were not included in the simulation, such as vibration on the test equipment, brake pad temperature, setup errors or calibration of experimental method measuring devices. The overall percent error of the simulation results at 500rpm, 700rpm, 900rpm, 500gram and 750gram loads, distances of 5cm, 10cm, 15cm, the result percent error are not up to 12%.
ANALISIS STRUKTUR PADA DISC BRAKE DENGAN VARIASI MATERIAL DAN JUMLAH LUBANG VENTILASI TERHADAP TEMPERATUR DAN TEGANGAN EKUIVALEN Ronaldo Adam Nengdiastama Nining Soejatmiasih; Hangga Wicaksono; Setiyo Destian Wicaksono; Rafik Djoenaidi
Otopro Vol 18 No 1 Nov 2022
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v18n1.p33-43

Abstract

Manny disc brake are produced at conventional machinery workshop. But, the optimum value of disc brake based on heat dissipation, and the safety is unknown. One of the causes of vehicle accidents is the vehicle factor (brake failure). Prolonged and continuous braking on the disc brake can result in fadding. Continuous stress generation can decrease fatigue life. The required material and the right number of holes are needed to solve this problem. The Purpose of this research is to get the optimum temperature and stress value. In this study, simulations were carried out with CAE software on disc brakes with materials Al 7075- T6, SS 304, gray cast iron and the number of ventilation holes 36, 48, 60. The results show that the disc brake with Al 7075-T6 material and 60 ventilaton holes has the best heat dissipation with 38,005ᴼC temperature value. Material gray cast iron with number of ventilation holes 48 produces the lower equivalent stress with 89,272 Mpa. From the research it can be concluded, disc brake with higher density,has higher temperature too. The greater tensile strength of disc brake material, resulting the lower equivalent stress. The gray cast iron material and the number of ventilation holes 48 is the most optimal in temperature absorption, the longest fatigue life, and the highest fatigue safety factor, with a temperature value of 54.99ᴼC, a fatigue life of 100000000 cycles, and an FOS of 3.34.The more number of ventilation holes, has the lower of temperature result but the higher stress concentration.
RANCANG BANGUN MESIN PEMOTONG SERBA GUNA HEMAT ENERGI PENUNJANG PRODUKTIFITAS UKM KERUPUK Akhmad Hafizh Ainur Rasyid; I Wayan Susila; Dewanto Dewanto; Dany Iman Santoso
Otopro Vol 18 No 1 Nov 2022
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v18n1.p7-12

Abstract

Puli crackers are an SME business in Indonesia which has a fairly good protein composition and is usually used as souvenirs of Madura. The problems of most Indonesia’s SMEs are still using manual labour with makeshift equipment. and the assistant machines available in the market have a large capacity so they are not easy to use on a household scale with small electrical capacity. The development method used in the design of an energy-efficient general-purpose cutting machine is engineering design until test and evaluate prototype stage. The engine capacity is 1,065 gr/s at the 2nd or 3rd 24 V dimmer speed setting. The result of this design process is the selection of an electric motor driven machine that is adjusted to the required power with reduced direct transmission in order to be able to cut the cracker dough.
PEMBUATAN BIOETANOL DARI NIRA AREN SEBAGAI ENERGI ALTERNATIF Frans Luntungan; Herotje Siwi; Artian Sirun; Priyono Priyono
Otopro Vol 18 No 1 Nov 2022
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v18n1.p18-22

Abstract

This research carried out the manufacture of bioethanol by utilizing palm sap as an alternative energy. Bioethanol is ethanol that can be produced through the fermentation of glucose, to produce bioethanol which is then carried out by distillation. Bioethanol is also a biofuel and one of its uses as an environmentally friendly alternative fuel. The goal to be achieved in this study is to produce bioethanol with the influence of the length of time of heating and the temperature of heating palm sap water in the distillation apparatus on the levels of bioethanol produced.  The raw material for the production of bioethanol was palm juice with natural fermentation for three days, then heated in a distillation apparatus with a heating temperature of 84-86oC, 87-89oC and 90-92oC. and the standard measuring instrument used to measure bioethanol levels is an alcohol meter.  The results of the research conducted, it can be seen that the effect of the length of time and temperature of heating palm sap in the distillation apparatus produces a volume of bioethanol of: 84-86oC = 256 ml, 87-89oC = 330 ml, 90-92oC = 383 ml, this can be seen also that the higher the heating temperature of the palm sap in the distillation apparatus resulted in a decrease in the bioethanol content, namely: 84-86oC = 83.8 %, 87-89oC = 80.8 %, 90-92oC = 77.6%. So to get a good bioethanol content, namely at a heating temperature of 84-86oC, produce bioethanol quality of 83.8%.

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