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All Journal Media Mesin: Majalah Teknik Mesin Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) R.E.M (Rekyasa Energi Manufaktur) Jurnal Turbo : Jurnal Program Studi Teknik Mesin Journal of Energy, Mechanical, Material and Manufacturing Engineering Otopro PELS (Procedia of Engineering and Life Science)
Edi Widodo
Universitas Muhammadiyah Sidoarjo
Automotive Engineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pengaruh Jenis Bahan Bakar Terhadap Viskositas dan TBN Pelumas SAE10W-30 pada Motor Bakar 125cc Dwi Yuliyanto; Edi Widodo
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 3 No 1 (2018): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v3i1.1541

Abstract

Along with the increasing progress of gasoline type of fuel led to many types of gasoline fuel sold in Indonesia to meet consumer demand required for fuel energy motor fuel. Includes Premium fuel types, Pertalite, Pertamax, Pertamax Turbo, and Pertamax Racing. Therefore, with the number of options are conducted research on the use of 3 different types of fuel are: Premium, Pertalite, and Pertamax tested on a 125cc motor fuel engine for 7 hours nonstop at 4000 rpm speed to know the effect on the difference in decrease in value of Viscosity and TBN SAE10W-30 lubricating oil used on the combustion engine. Given the function Lubricant oil is also very important in maintaining the durability and performance of the engine. The results show that the use of Pertamax fuel has the highest decrease in Viscosity and TBN value compared to Pertalite and Premium fuels. Where each value of Viscosity and TBN on the sample of Pertamax lubricant 9.7 cSt and 6.9 mg KOH / g. Pertalite 9.8 cSt and 7.1 mg KOH / g. Premium 7.2 cSt and 10 mg KOH / g.
Analisa Kinerja Aliran Fluida dalam Rangkaian Seri dan Paralel dengan Penambahan Tube Bundle pada Pompa Sentrifugal Muhammad Marzuky Saleh; Edi Widodo
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 3 No 2 (2018): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v3i2.1884

Abstract

Pump is a device used to move fluid from one place to another through the pipe media as a channel. The pump has 2 important components in its performance, namely: Impeller and pump house (casing). When the pump cannot meet the required capacity it can use series and parallel pump circuits to increase it. When moving the fluid to a high surface or high pressure it will have the specifications of the head and discharge. Fluid flow is a liquid that flows in a pipe. In flow there is fluid pressure and also flow type. There are 3 flow types, namely laminer, transition, turbulent. To reduce turbulence in the flow can be used Tube bundle which is a device consisting of several pipes that are tied together that are attached to a cross section in the pipe. This research was conducted in 4 testing stages, namely series circuit with additional tube bundle, series circuit without additional tube bundle, parallel circuit with additional tube bundle, parallel circuit without additional tube bundle. Each test takes fluid pressure, discharge, flow type. From the results of this study it was found that the parallel circuit pump with an additional tube bundle produces fluid pressure, discharge, flow velocity smaller than the series circuit, whereas when without additional the parallel tube pump bundle produces a fluid pressure, discharge, flow velocity greater than the circuit series, while for the flow type of this study is turbulent flow.
Numerical Analysis of Low Carbon Steel Tensile Strength Using Software (SolidWorks) Arya Rudi Nasution; Edi Widodo
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 7 No 1 (2022): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v7i1.1629

Abstract

Pengujian tarik merupakan suatu mesin pengujian bahan yang paling mendasar. Pengujian merusak adalah salah satu pengujian untuk melihat kekuatan dan ketangguhan dari material. Pengujian ini sangat sederhana, tidak mahal dan sudah mengalami standarisasi di seluruh dunia, misalnya di Amerika dengan ASTM E-8 dan Jepang dengan JIS 2241. Penelitian ini ingin melihat besaran kekuatan bahan menggunakan metode elemen hingga. Metode elemen hingga (finite element method) merupakan metode numerik yang digunakan untuk menyelesaikan permasalahan dalam bidang rekayasa. Untuk meganalisa numerik menggunakan software SolidWorks. Material yang digunakan baja karbon rendah dan dibentuk geometrinya sesuai ASTM E8. Untuk melihat komposisi material digunakan microskop optical emission spectroscopy. Pengujian tarik eksperimen menggunakan mesin uji tarik Universal Test Machine dengan kapasitas maksimal 50 kN. Hasil pengujian eksperimental dan hasil pengamatan komposisi pada material dimasukkan kedalam software SolidWorks dan selanjutnya melakukan simulasi untuk mendapatkan/mengetahui besarnya nilai kekuatan dari material. Sebelum dilakukan simulasi setiap geometri spesimen dibedakan/divariasikan berdasarkan panjang mesh. Variasi mesh 2, 4, 6, 8 dan 10. Dari hasil pengujian eksperimen nilai tegangan (stress) yang diperoleh 2.451E+09N/m2. Hasil dari simulasi numerik, nilai tegangan pada material disetiap variasi berbeda – beda, ini menunjukkan bahwa silmulasi berjalan dengan baik. Nilai tegangan yang didapat pada eksperimental tidak begitu jauh besarnya dengan hasil simulasi. Hasil simulasi dengan panjang mesh 2 dan 4 sangat mendekati nilai dari eksperimen. Semakin besar mesh akan mempengaruhi nilai hasil simulasi.
The sansevieria trifasciata fiber compatibility analysis for biocomposite reinforcement Edi Widodo; Mulyadi Mulyadi; Prantasi Harmi Tjahjanti; Fajar Syahril Kirom
TURBO [Tulisan Riset Berbasis Online] Vol 10, No 1 (2021): Jurnal TURBO Juni 2021
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v10i1.1542

Abstract

This study analyzes the potential of sanseviera fibers to be used as biocomposite reinforcement. Sansevieria fibers are characterized to improve physical and chemical properties so that they are stronger and can be used as a reinforcement for the composite matrix. Fiber alkaline treatment with NaOH solution, proven to remove hemicellulose and lignin content, improve fiber properties, can increase the adhesiveness properties of the resin matrix. The fiber that has been treated with alkali is used as a bio-composite reinforcement using an epoxy resin matrix. FTIR test was carried out to obtain data from the compound groups of the fibers. Cellulose and hemicellulose contents were analyzed and the degree of crystallinity of the fibers to obtain compatibility with epoxy resin as a matrix. Chemical properties of Sansevieria fibers. Compared to PET and PETG fibers, as a composite reinforcing synthetic fiber with good compatibility with resins. This compatibility will determine the homogeneity of the adhesive properties of the fiber surface to the matrix. The bonding of microstructural compounds is very dependent on this property and will give the final result a better tensile strength of the composite.Keywords: biocomposite, sansevieria fibre, epoxy resin.
STUDI VARIASI JENIS MATERIAL TALI PADA MODIFIKASI ALAT PENGUKURAN TORSI POMPA SENTRIFUGAL Taufik Afandi; Edi Widodo; Prantasi Harmi Tjahjanti; Iswanto Iswanto
Otopro Vol 16 No 2 Mei 2021
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v16n2.p50-57

Abstract

The focus of this research is to analyze variations in the type of rope material and size as a link for measuring the force on a centrifugal pump, namely to find out the type of material and the size of the rope that is suitable to minimize the loss of force contained in the wire. To find out the type of calculation and comparison of the values for various types of material. From the tensile test that has been done, the highest UTS (Ultimate Tensille Stress) value was obtained in a polypropylene monofilament rope specimen with a stress value of 602.17 kgf with 382.14% elongation. The highest stress calculation value data was obtained by the Polypropylene monofilament rope specimen with a value of 738,85 at elongation to 360%. The highest modulus of elasticity obtained by Nylon rope was 4,564  . This shows that the modulus of elasticity is inversely proportional to the stress value, which was the stress value of nylon straps that was the highest compared to other specimens but had the highest elastic modulus value among other specimens.
The Effect of Modified Air Filters on Improved Performance of 110 Cc Matic Gasoline Motor Rio Putra Permadi; Edi Widodo
Procedia of Engineering and Life Science Vol 1 No 1 (2021): Proceedings of the 1st Seminar Nasional Sains 2021
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (314.301 KB) | DOI: 10.21070/pels.v1i1.642

Abstract

At this time the fuel motor has a very important role in everyday life, especially in the field of transportation. The development of motorcycle technology is now on the matic system which has various shortcomings and adventages. This automatic motorbike also uses an air filter, air filter is one of the important components on a motorcycle that has a major effect on the performance of the engine that function as a filter for air impurities that will enter the combustion chamber. Because of the importance of the function of the air filter, it is necessary to do research with the aim of knowing the effect of the air filter on increasing the power and torque on a 110 cc automatic motorbike. Variant air filters are standar air filters, modified air filter, and testing without air filters. The test was carried out using a dynotest engine with different rpm from 2000 rpm – 4000 rpm, the test is carried out with the aim of knowing the increase in power and torque in each air filter being test. From the result of the study showed that the air filterless test produced an increase in power and the highest torque of 8.6 HP and 23.45 Nm of torque, when compared to standart air filters and modification filters. Altough the best improvement result are obtained from testing without air filters, the fuel motor must continue to use the air filter as a support to obtain optimum performance on motorized vehicles.
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.  
Capacity and power analysis on inclined screw conveyor using DEM simulation Ahmad Faishol; Mulyadi; Edi Widodo
Journal of Energy, Mechanical, Material, and Manufacturing Engineering Vol. 8 No. 1 (2023)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v8i1.25229

Abstract

DEM is a method based on the theory of molecular dynamics that can simulate the movement of granular materials. One of the advantages of this method is it can simulate accurately without creating a real object. This study aims to determine how much influence the inclination of the screw conveyor has on the capacity and power of the motor. Corn shelled was used as a test with continuous filling of 1000 ft3/hour for 20 seconds, while modeling by screw conveyor 2 meter long at positions 00, 200 and 450 with variations in speed of 50 rpm, 75 rpm and 100 rpm. Screw conveyor mass flow and torque data are taken for analysis. The DEM simulation results at a speed of 100 rpm with inclination of 00 is 21,2 ton/hour and the required power of 1.58 HP. Different results are obtained in modelling with an inclination of 450, the capacity drops to 8,6 ton/hour with the required power of 11.8 HP. It can be seen that the capacity reduction due to inclination reaches more than 50% with a significant increase in power.
Effects of Lumajang sand-bentonite mix on Al-Si casting mechanical properties Edi Widodo; Rendra Dani Firmansyah; Subroto; Iis Siti Aisyah
Journal of Energy, Mechanical, Material, and Manufacturing Engineering Vol. 8 No. 2 (2023)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v8i2.29093

Abstract

The use of sand for metal molds is often found in various places; this research will focus on the type of sand used, namely sand from Lumajang Regency, which is known to be strong for concrete mixes or the like. So the purpose of this research is to find out how Lumajang sand molds will be used as metal casting molds. Testing will be carried out by making three variations of bentonite mixtures: 10%, 15%, and 20%. Later, after knowing the tensile and compressive strengths of each sand mold, casting will be carried out with three variations. For testing, casting objects will use the dye penetration test method. So that a description of the surface smoothness of the casting objects made from the three molds will be obtained and it will be known which variation is good to know about the sand mold and the appropriate metal casting results. From the results of the research conducted, it shows that the bentonite mixture with a percentage of 20% gets the highest compressive value with a value of 26.3 N/cm2 when compared to other bentonite mixture variations. From the tensile testing results, a high tensile strength value was obtained in the 15% bentonite mixture variation with a value of 0.7 N/cm2. While the results of the dye penetrant test were obtained, the results of the variation of the sand mold mixture with 20% bentonite into a mold produced the smoothest workpiece results with a few red spots caused during testing.
The effect of tapioca starch concentration on mechanical properties of Sansevieria Trifasciata fiber-reinforced composites Misbakh; Edi Widodo; Iis Siti Aisyah; Syahruddin; Nur Haizal Ariffin
Journal of Energy, Mechanical, Material, and Manufacturing Engineering Vol. 9 No. 1 (2024)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v9i1.32657

Abstract

This research investigates the impact of varying concentrations of tapioca starch (Manihot esculenta) on the mechanical properties of composites reinforced with Sansevieria trifasciata (Lidah mertua) fibers. The composites were fabricated using the hand lay-up method with SHCP 2668 polyester resin, mekpo catalyst, and alkali-treated fibers (5% NaOH). The fiber weight fraction was 30%, and the catalyst weight was 10% of the total specimen mass. The tapioca starch concentrations were 0%, 10%, 20%, 30%, 40%, and 50%, with a total matrix mass of 50 grams. Mechanical properties were evaluated through tensile tests (ASTM-D3039) and bending tests (ASTM-D790). The results indicated that composites with added tapioca starch exhibited improved tensile strength and a higher modulus of elasticity. However, for bending tests, the composites without added tapioca starch demonstrated better performance, showing a higher elastic modulus and better flexibility. In conclusion, adding tapioca starch enhances the tensile strength of the composites, making them stronger. Conversely, for bending applications, composites without tapioca starch are preferable due to their superior elasticity and bending strength.
Co-Authors A'rasy Fahruddin Ahmad Faishol Arya Rudi Nasution A’rasy Fahruddin Dwi Yuliyanto Eko Prasetio Putro Faisal Ansori Fajar Syahril Kirom Herman Herman Iis Siti Aisyah Ilham Dwiyoga Iswanto Iswanto Miftahul Huda Misbakh Mohammad Dani Iswanto Muhammad Jamaluddin Anwar Muhammad Marzuky Saleh Mulyadi Mulyadi Nur Haizal Ariffin Prantasi Harmi Tjahjanti Rachmat Firdaus Rega Yuan Pradhana Rendra Dani Firmansyah Ridho Choirul Anam Rio Putra Permadi Rizky Dwi Jayanto Subroto Syahruddin Taufik Afandi