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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) Rekayasa Mesin ROTOR: JURNAL ILMIAH TEKNIK MESIN ELINVO (Electronics, Informatics, and Vocational Education) Journal of Mechanical Engineering Science and Technology Journal of Energy, Mechanical, Material and Manufacturing Engineering at-tamkin: Jurnal Pengabdian kepada Masyarakat Jurnal Teknologi Terapan International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Mechanical Engineering for Society and Industry Automotive Experiences GMPI Conference Series
Moch. Agus Choiron
Universitas Brawijaya
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation Other

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Optimasi Dimensi Tebal Awal Pelat Pada Proses Pembengkokan Bentuk Jogged Flange Dengan Simulasi Tiga Dimensi Choiron, Moch. Agus; Ariseno, Agustinus; Prasetyo, Andika
Rekayasa Mesin Vol 3, No 3 (2012)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

One of the problem of bending process is the final product dimension that it is not agree with the expected results. To reduce trial and error of parametersdesign, designers can utilize computer simulations to predict parameter process virtually and more time-saving analysis. The aim of this study is determine the variations effect of initial blank material thickness to the flange flatness of the final product in the jogged flange process.In order to find the influence on the uneveness of the flange bend, the parameters of plate thickness, flange radius ratio, and flange length ratio are selected. Verification models were created to justify the trend data between modeling and the experimental results.From the result, the elevation difference on uneveness of the flange bendwas obtained. For initial blank material thickness dimensions, it can be seen that the minimum value of the uneveness defect can be obtained by using equal of plate area ratio. The observed increase of the flange radius could be attribute to decrease of uneveness of the flange bend. The increase of plate thickness, uneveness of the flange bend will be decrease.Keywords: initial blank material thickness, jogged flange, uneveness of the flange bend
Hardening Baja AISI 1045 Menggunakan Gel Aloe Vera Sebagai Media Pendingin Budiyanto, Eko; Choiron, Moch. Agus; Darmadi, Djarot B.
Jurnal Rekayasa Mesin Vol. 7 No. 2 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (979.156 KB) | DOI: 10.21776/ub.jrm.2016.007.02.3

Abstract

Quenching is a cooling method of heat treatment for metal hardening. Quenching refers to the process of rapidly cooling metal parts from the austenitizing or solution treating temperature, typically from within the range of 815 to 970 °C for steel. The selection of a quenchant medium depends on the hardenability of the particular alloy, the section thickness and shape involved, and the cooling rates to achieve the desired microstructure. The liquid quenchants of oil is commonly used in industrial manufacture. But, oil is not environmental. The aim of this research research is to find new quenchant for change oil as quenchant to more environmental. Gel aloe vera is purposed for it. The material used in this study is AISI 1045 steel. Cooling curve and cooling rate is measured by finite element model, ANSYS APDL 14.5. True experimental is done to view microstructure and measure hardness of steel. Simulation result shown that gel aloe vera has almost similar cooling curve and cooling rate with oil. Microstructure result of steel for gel aloe vera as quenchant is martensite in surface, bainite in center, and pearlite in between surface and center. Hardness number of steel for gel aloe vera as quenchant is 189.63 HVN in surface, 182.566 HVN in center, and 162.866 HVN in between surface and center. By simulation and true experimental analisys concluded that gel aloe vera has opportunities to change oil as quenchant for hardening process.
Optimasi Proses Multi-Pass Equal Channel Angular Pressing dengan Simulasi Komputer Choiron, Moch. Agus; Anam, Khairul; Prasetyo, Totok Tri
Jurnal Rekayasa Mesin Vol 5, No 1 (2014)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

UFG (Ultra-fine grained) material is a material with a grain size between 10 nm to 1000 nm were developed to improve the quality of the material microstructure byreducing the grain size. Equal Channel Angular Pressing (ECAP) is a method to produce the UFG material by utilizing the shear stress on the material. Shear stress distribution in the material as it passes through the channel intersection is important to investigate so that it can be known the die design that can produce a uniform shear stress distribution in the material. In this study, computer simulation of multi-pass ECAP is carried out as the initial prediction for reducing the trial- error ECAP process. Multi-pass ECAP process is modeled with software based on Finite Element Method (FEM). Optimization is done with L9 Taguchi which parameters arenumber of pass, angle of intersection, outer fillet, and friction coefficient. By measuring the distribution of shear stress and plastic strain on the model will be generated optimization of multi-pass ECAP process.In the present study, the optimum setting for equal channel angular pressing prosses are pass of 6,intersection angle of 90 , outer fillet radii of 2 mm and coefficient friction of 0,1.Keywords: ECAP, multi-pass, Taguchi method, shear stress, plasticstrain.
Pengaruh Kuat Arus Pengelasan Dua Layer dengan Metode GTAW dan SMAW terhadap Kekuatan Tarik pada Plat ASTM A 36 Awali, Jatmoko; Irawan, Yudy Surya; Choiron, Moch. Agus
Rekayasa Mesin Vol 5, No 2 (2014)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

Welding is a combining method of two materials by using thermal energy. It was divided into several groups including the classification of the liquid, press and soldering. Arc welding is the most commonly used in every time, such as welding with consumable and not consumable electrodes. Two types of arc welding have deficiency and excess, respectively; combining both types of arc welding is needed to cover each other’s excess. The method in this research was combining of welding GTAW (Gas Tungsten Arc Welding) and SMAW (Shield Metal Arc Welding) with variation in Root Pass and Cover Pass position. The current of GTAW with 100A, 130A, 160A, and SMAW with 65A, 80A, and 95A were used in this research. ASTM A 36 was used as the material. The plat thickness was 7mm and single V groove 600. Combining the welding GTAW-GTAW between 100A and 100A for the first and second layer has the highest tensile strength, and the lowest tensile strength was in combination of welding between GTAW-SMAW with 65A and 100A.Keywords: Tensile strength, GTAW, SMAW, two layers and ASTM A 36
Pengaruh Crash Box Berbentuk Tabung 2 Segmen terhadap Kemampuan Menyerap Energi Impak dengan Simulasi Komputer Asroni, Asroni; Choiron, Moch. Agus; Purnowidodo, Anindito
Jurnal Rekayasa Mesin Vol 5, No 3 (2014)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

Crash Box is a very important part as absorbing impact energy, especially in the frontal crash case. The purpose of this study was to determine the optimal design on two circular cross sections Crash Box to its ability to absorb impact energy and deformation pattern. The independent variable in this study were length, and thickness of the Crash Box with length of tube 1 (h ) = length of tube 2 (h 2 ) = 40, 50, 60 mm and thickness of tube 1 (t 201 1 1 ) = thickness of tube 2 (t ) = 2,5 ; 3 ; 3.5 mm were analyzed by the Taguchi method.The dependent variable is the energy absorbed and the deformation that occurs in Crash Box due to the impact test (Impactor) and is measured by using finite element-based software which is Ansys 14.5. Based on data from the simulation results, it can be obtained on one circular cross section Crash Box has the ability to absorb the energy of 2762.89 A. For optimum design of two circular cross sections Crash Box has the ability to absorb the energy of 4435.04 J. Optimum design of Crash Box has length of tube 1 (h 1 ) = 40 mm, length of tube 2 (h 2 ) = 60 mm, thickness of tube 1 (t ) = 3.5 mm, thickness of tube 2 (t ) = 3 mm. From the deformation pattern analysis, it can be seen that the deformation in the Crash Box can be divided into 2 types: Concertina mode (bending on the Crash Box walls is symmetric) and Diamond Fashion (bending on the Crash Box walls is not symmetrical).Keywords: Crash Box, Simulation, Energy, Deformation, Sectional Shape, Buckling.
Simulasi Komputer pada Optimasi Desain Hybrid Plating dalam Proses Bone Healing Mamungkas, Mohamad Irkham; Choiron, Moch. Agus; Suprapto, Wahyono
Jurnal Rekayasa Mesin Vol 5, No 3 (2014)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

Hybrid plating method that combine locking screw and non-locking screw usually used for healing on bone fracture. This methodusedin order to get the smallestdeflectionandpreventpullout. The research purposed to obtain the optimal parameter design locking screw, such as position of locking screw, thickness and width plates by using Taguchi method which obtained level and variations factor. The material used in this study for screw and the plate were stainless steel SS 316 L. The load model used axial load of 1000 N. The number of hole plates were 8, which 4 holes in each section. In one section consist of locking screw and non locking screw Quasi experimental model applied ANSYS Workbench 14.5 finite element software. Results showed the optimum design was 3 locking scews in the left position, the thickness 4 mm and a width of plate 16 mm. The optimum design produce 0,039507 mm of average deflection and it can be denoted that failure and pull out was not occurred.Keywords : Hybrid Plating, Simulation, Deflection, Pull Out
Pengaruh Parameter Proses Incremental Backward Hole-Flanging terhadap Ketebalan Kerah pada Alumunium 1050A Fakhruddin, Muhammad; Choiron, Moch. Agus; Purnowidodo, Anindito
Rekayasa Mesin Vol 10, No 1 (2019)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2019.010.01.4

Abstract

Conventional hole-flanging process in a small batch is sometimes costly or almost impossible due to the variety of the product profile. Recent studies showed that modern manufacturing was developed to overcome the limitation of the conventional hole-flanging process. Incremental backward hole-flanging (IBHF) was one of the strategies that developed to overcome this particular limitation. The main objective of this research was to investigate the influence of IBHF process parameters toward collar thickness of the product. It enables to measure the impact and behavior of each process parameters, i.e., forming speed, axial and radial forming step size toward the particular response parameter. The result showed that axial and radial forming step size was the main influence and the forming speed has a slight effect towards collar thickness. The behavior of each parameter was increased forming speed and radial forming step size would decrease collar thickness, whereas increased axial forming step size would increase collar thickness.
Optimasi Desain Metal Gasket Tipis Bentuk New Corrugated Untuk Kebutuhan Tekanan Kerja Rendah Dengan Simulasi Komputer Permanasari, Avita Ayu; Choiron, Moch. Agus; Purnowidodo, Anindito
Jurnal Rekayasa Mesin Vol 4, No 3 (2013)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

Contact width and leakage had been used as the main parameter to optimize a new corrugated metal gasket for high working pressure. The leakage could be reduced as increasing the contact width. On the other hand, gaskets in piping for low pressure were used into distribution of water in the hotel. In this study, thin metal gasket is optimized by using simulation experiment. The design of experimentation (DOE) Taguchi method is used to analyze the effect of each parameter design and to predict optimal design of thin metal gasket. The L27 orthogonal array is concerned to design the experimental matrix for five factors with three levels. The five factors are thickness (t), pitch (p), over hang (OH), lip height (h), and radius convex (R). The observed value is denoted by using the slope of the curve of relationship between contact width and clamping load. The slope of curve is increased; it will be reduce the clamping load. The optimum design of thin metal gasket based on the results of each observed values is a model with thickness (t) = 0.3 mm, pitch (p) = 4 mm, over hang (OH) = 3 mm, lip height (h) = 0.4 mm, and radius convex (R) = 2.5 mm.Keywords: Contact width, leakage, Taguchi, optimum design
EXPERIMENTAL STUDY ON MOLD-LAY FILAMENT INSTEAD OF WAX IN INVESTMENT CASTING PROCESS Kusyairi, Imam; Himawan, Helmy Mukti; Choiron, Moch. Agus; Irawan, Yudy Surya; Safari, Rachmat; Djuanda, Dagus Resmana
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 | Full PDF (736.278 KB) | DOI: 10.22219/jemmme.v5i1.10602

Abstract

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 Geometri Crash Box 2 Segmen terhadap Kemampuan Menyerap Energi Impak dengan Simulasi Komputer Awali, Jatmiko; Choiron, Moch. Agus; Irawan, Yudy Surya
Jurnal Rekayasa Mesin Vol 5, No 2 (2014)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

Crash box is a passive safety system placed on four wheeled vehicle, the purposes it to absorb the impact energy due to bumper no longer able hold the impact happened. There have been many studies done with the type of segment, so it needs development especially segment additional, and in this study of two segments of crash box is expected to absorb more energy, the additional of this segment purposes to increase the critical load so can be reduced the buckling. The method in this study used is ANSYS Workbench 14.5 finite element software. The variables used are the section type crash box geometry of circle, square, and hexagon, with cross section area of 1492 mm2, 1771 mm2, and 2045 mm2 and uniform height of 100 mm, the material used is aluminum AA 7003-T7. Simulation process begins when the impactor collision with speed 16 km/hour. From the research result is that moment inertia of the cross section area were able an important role in the absorption of impact energy, the cross section area 2045 mm2 were able to absorb the higher energy for each type of crash box, and the section of hexagon term that can absorb highest impact energy.Keywords: Crash Box, Simulation, Energy, Section, Two Segments
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Hadi Djaelani, Abdul Hadi Achfas Zacoeb Agung Sugeng Widodo Agustinus Ariseno Ahmad Rivai Andika Prasetyo Anggriawan, Ongki Budi Anindito Purnowidodo Anindito Purnowidodo Ariadi, Yudhi Asroni Asroni Asroni, Asroni Avita Ayu Permanasari Bangert, Axel Bintang Rahmaddian Anwari, Bintang Rahmaddian Dika, Johan Wayan Djarot B. Darmadi, Djarot B. Djuanda, Dagus Resmana Eko Budianto EKO BUDIYANTO FATRA NONGGALA PUTRA Fauzi, Katanda Fajar Gembong Edhi Setyawan Hadi Suyono Halman, Halman Helmy Mukti Himawan Helmy Mukti Himawan, Helmy Mukti Hermawan, Muhammad Vendy Herry Santosa Hidayati, Nafisah Arina Ida, Zumrotul Imam Kusyairi Imam Kusyairi, Imam Indradi Wijatmiko Ismi Choirotin Ismu Rini Dwi Ari Jatmiko Awali Jatmoko Awali Junipitoyo, Bambang Kurnianingtyas, Diva Lilis Yuliati Lin, Jing Chie M. Fahrur Rozy Hentihu Maulana, Eka Mohamad Irkham Mamungkas Muhammad Fakhruddin Musyaffa, Dzikri Amali Nadya, Mesti Onny Setyawati Panca Mudjirahardjo Pratama, Fajar Adi Raden Arief Setyawan Redyarsa Dharma Bintara Rennie, Allan E.W. Ridwan, Ridwan Rismanto, Muhammad Rivai, Ahmad Rudy Soenoko Sabitah, A'yan Safari, Rachmat Sandhagen, Carl sarip, sarip Setyo Hariyadi Shiddieqy, M. Hasbi Ash Sofyan Arief Sofyan Arief Setyabudi Solikhin, Atfalus Solikhin Sudjito Soeparman Sugiono Sugiono Suudy, Ahmad Hamim Taryono, Taryono Teguh Dwi Widodo Totok Tri Prasetyo Wahyono Suprapto Wakhidah, Delia Hani Widodo, Teguh Dwi Winarto Winarto Wirawan, Willy Artha Yudy Surya Irawan Zakariya, Yahya Zumrotul Ida