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All Journal Rekayasa Mesin Turbo : Jurnal Program Studi Teknik Mesin Journal of Energy, Mechanical, Material and Manufacturing Engineering Jurnal Teknologi Terapan Proceedings Series on Physical & Formal Sciences JURNAL POLI-TEKNOLOGI

Moch. Agus Choiron

Universitas Brawijaya

Author-ID : 2685774

Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

Published : 6 Documents Claim Missing Document

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Articles

Experimental Study on Mold-Lay Filament instead of Wax in Investment Casting Process Imam Kusyairi; Helmy Mukti Himawan; Moch. Agus Choiron; Yudy Surya Irawan; Rachmat Safari; Dagus Resmana Djuanda
JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 5 No. 1 (2020)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v5i1.10602

Metal casting with investment casting method is metal casting which has the ability to produce accurate parts and has a controlled fineness. Current technological developments are very influential in the development of investment casting. One of them has been found mold-lay filament as a substitute for wax, which is now wax is one of the main components in investment casting process. Mold-lay filament is printed using a 3D Printer machine. In this study, the wax in the investment casting process was replaced by a mold-lay filament with the specifications 0.75kg / 0.55 lb of 1.75mm MOLDLAY filament, prints at temperatures of 170-180° C. The result show that mold-lay flutes are also able to come out well from slurry molds, but require more time than wax, this is because one of the plastic mold-lay compositions, which takes a long time for the moldlay fillment to come out of the mold. Further research suggestions are needed further testing in terms of roughness of the product with moldlay filament and compared with wax. This will also see if there are any remaining moldlay filaments from the mold.

Pengaruh Variasi Lebar Sudu Mangkok terhadap Kinerja Turbin Kinetik Poros Vertikal Ujiburrahman Ujiburrahman; Rudy Soenoko; Moch. Agus Choiron
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 1 (2019): Juni 2019
Publisher : Universitas Muhammadiyah Metro

Daya dan efisiensi merupakan parameter – parameter yang menjadi tolak ukur dari kinerja sebuah turbin kinetik. Penelitian sebelumnya menunjukan berbagai faktor seperti debit aliran, dimensi dan geometri dari turbin kinetik adalah varaibel – variabel yang mempengaruhi besarnya daya dan efisiensi. Dalam upaya meningkatkan kinerja turbin kinetik dibutuhkan pemahaman yang mendalam terhadap faktor – faktor yang mempengaruhinya. Oleh karena itu tujuan dari penelitian ini adalah untuk mengetahui pengaruh variasi lebar sudu mangkok terhadap kinerja turbin kinetik. Metode yang digunakan dalam penelitian ini adalah eksperimental nyata pada skala laboratorium. Pengujian dilakukan pada turbin kinetik poros vertikal dengan variasi lebar sudu 8 cm, 9 cm dan 10 cm. Setiap turbin diuji pada variasi debit air 45 m3/h, 50 m3/h, 55 m3/h, 60 m3/h dan 65 m3/h dan variasi putaran 20 rpm, 40 rpm, 60 rpm, 80 rpm dan 100 rpm. Hasil penelitian menunjukan bahwa lebar sudu mangkok mempengaruhi kinerja dari turbin kinetik dimana lebar sudu mangkok 10 cm memiliki kinerja lebih tinggi dari lebar sudu mangkok 8 cm dan 9 cm. Kinerja tertinggi turbin kinetik pada variasi lebar sudu mangkok 10 cm diperoleh pada kondisi putaran 80 rpm dan debit 65 m3/h. Pada kondisi tersebut daya yang dihasilkan oleh turbin kinetik adalah 12,98 Watt dan efisiensinya 35,72 %.

Studi Eksperimental Pengaruh Sumber Kalor Terhadap Distribusi Temperatur dan Temperatur Pendidihan pada Tapering Heat Pipe Sarip Sarip; Sudjito Sudjito; Lilis Yuliati; Moch. Agus Choiron
Jurnal Teknologi Terapan Vol 2, No 2 (2016): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Heat source of the heat energy can affected of the temperature distribution and the boiling temperature of the tapering heat pipe located on the evaporator. The purpose of this study was conducted to determine the effect of heat source on the temperature distribution and boiling temperature that occur in the tapering heat pipe. In this study, used heat pipe tapered shape of the copper pipe diameter of 10 mm and 20 mm as evaporator as condenser with a length of 200 mm. Tapering heat pipe inside there is a wick mesh screen serves as the axis of the capillary to the return liquid / backflow of fluid from the condenser to the evaporator. The condenser ends mounted a valve to inject the working fluid into the tapering heat pipe. K-type thermocouple is integrated with NI-9211 module and c-DAQ 9271 to measure the temperature distribution along the tapering heat pipe with a heat source of DC power supply for (25, 30, 35, 40, 45, 50) Watt. The results showed that there was a difference of temperature distribution and boiling temperature caused by the variations heat source. Temperature of distribution and boiling temperature which tends to increase in value the greater the heat source, so it can be concluded that the heat source has an influence on the temperature distribution and the boiling temperature of the tapering heat pipe with 50 Watt heat source generates temperature distribution and boiling temperature stable.

Optimasi Desain Ban Tanpa Udara (Non Pneumatic Tire) Dengan Struktur Hexagonal Honeycombs Menggunakan Response Surface Method (RSM) Farit Hendro Wibowo; Moch. Agus Choiron; Anindito Purnowidodo
Proceedings Series on Physical & Formal Sciences Vol. 1 (2021): Proceedings of Smart Advancement on Engineering and Applied Science
Publisher : UM Purwokerto Press

Non-Pneumatic Tires (NPT) are tires that do not use compressed air like other tires. In this paper, the optimal design obtained is based on the static and explicit dynamic behavior of the NPT construction, which has hexagonal honeycomb spokes. The hexagonal honeycomb type NPT component consists of the hub wheel, outer ring, spokes, and tread. The honeycomb model is made differently based on tread thickness (20 mm, 25 mm, 30 mm), outer ring thickness (0.25 mm, 0.5 mm, 0.75 mm), spokes thickness (3 mm, 5 mm, 7 mm), and the number of spokes holes (12, 13, 14). Based on the simulation results of Ansys and Minitab, the recommended optimal design is 20 mm tread thickness, 3.2 mm spokes thickness, 0.25 mm outer thickness, and the number of holes 12 pieces.

PENGEMBANGAN DESAIN CIRCULAR DAN SQUARE CRASHBOX DENGAN PENAMBAHAN HONEYCOMB SEBAGAI FILLER PADA MODEL BEBAN FRONTAL DAN OBLIQUE Bayu Agung Wicaksono; Moch. Agus Choiron; Anindito Purnowidodo
Jurnal Rekayasa Mesin Vol. 14 No. 1 (2023)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v14i1.1289

In the previous study, several researchers had developed circular and square crash box designs to enhance energy absorption. In this study, circular and square honeycomb filled crash box is investigated by varying the honeycomb cell dimension. Honeycomb filled is selected due to lightweight and high strength to weight ratio. The crash box modelling was carried out using the finite element method with a frontal and oblique load model. Honeycomb cell dimensions vary by using five models, which are 0%, 25%, 50%, 75% and 100%. This ratio compares the size of honeycomb pitch cell with the inner diameter of crash box. The inner diameter and the crash box thickness are 40 mm and 2 mm, respectively. The single cell wall and the double wall honeycomb thickness are 0,5 mm and 1 mm, respectively. The load model used is an impactor mass of 600 kg with a speed of 15 m/s. For oblique load model, the angle for the load is 300. In this study, energy absorption, deformation pattern and efficiency of the collision force (CFE) were observed, based on the results of computer simulations. The results show that square model with 25% honeycomb filled ratio (S25) has the highest energy absorption, both on frontal and oblique loading. Otherwise, the circle model with 25% honeycomb filled ratio (C25) has the highest CFE value for frontal loading, and S50 has the highest CFE value for oblique loading. The high CFE value is due to the reaction-displacement curve, which is quite stable. The deformation pattern on S25 model due to frontal load model is a diamond mode with five folds. This pattern shows a higher number fold than other square models. Whereas, on oblique load model, the S25 model generates a greater number of folding due to the number of honeycomb cells.

PENGARUH LEBAR SUDUT MANGKOK TERHADAP UNJUK KERJA TURBIN KINETIK Ujiburrahman Ujiburrahman; Rudy Soenoko; Moch. Agus Choiron
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2398

Power and efficiency are parameters that show the performance of a kinetic turbine. Previous studies have shown various factors such as flowrate, dimensions and geometry of kinetic turbines are variables that affect the magnitude of power and efficiency. In an effort to improve the performance of kinetic turbines it takes a deep understanding of the factors that influence it. Therefore the purpose of this study was to determine the effect of width variations of bowl blades on kinetic turbine performance. The method used in this study was real experimental on a laboratory scale. Tests were carried out on vertical shaft kinetic turbines with blade width variations of 8 cm, 9 cm and 10 cm. Each turbine is tested on variations of water discharge 45 m3/h, 50 m3/h, 55 m3/h, 60 m3/h and 65 m3/h and in rotation of 80 rpm. The results showed that the width of the bowl affected the performance of the kinetic turbine where the width of the 10 cm bowl blade had a higher performance than the width of the bowl blade 8 cm and 9 cm. The highest performance of kinetic turbines in the variation of the width of the 10 cm bowl blade was obtained at discharge conditions of 65 m3/h. In these conditions the power produced by the kinetic turbine is 12.98 Watts and the efficiency is 35.72%.

Co-Authors Anindito Purnowidodo Bayu Agung Wicaksono Dagus Resmana Djuanda Helmy Mukti Himawan Imam Kusyairi Lilis Yuliati Rachmat Safari Rudy Soenoko Sarip Sarip Sudjito Soeparman Ujiburrahman Ujiburrahman Wibowo, Farit Hendro Yudy Surya Irawan

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