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All Journal Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Rekayasa Mesin Journal of Environmental Engineering and Sustainable Technology ROTOR: JURNAL ILMIAH TEKNIK MESIN Journal of Energy, Mechanical, Material and Manufacturing Engineering Conference SENATIK STT Adisutjipto Yogyakarta International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Mechanical Engineering for Society and Industry Proceedings Series on Physical & Formal Sciences Automotive Experiences Dulang: Jurnal Pengabdian Kepada Masyarakat GMPI Conference Series
Anindito Purnowidodo
Staf Pengajar Jurusan Teknik Mesin Universitas Brawijaya Malang
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation Other

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Optimasi Desain Gasket Karet Tipe Ring Profil C Flange Closed Groove dengan Metode Simulasi Alamsyah, Fikrul Akbar; Choiron, Mochamad Agus; Purnowidodo, Anindito
Jurnal Rekayasa Mesin Vol 7, No 1 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (594.635 KB) | DOI: 10.21776/ub.jrm.2016.007.01.6

Abstract

Gasket is one of important part in piping system to prevent leakage, especially in connection between pipes. The purpose of this study was to determine the optimal design on C profile rubber gasket based on contact width considering contact stress. Design parameter in this study were lips thickness (t)= 4; 4,5; 5 mm, lips length (l)= 5; 5,5; 6 mm, outer diameter (Ro)= 6,5; 6,7; 6,9 mm and inner diameter (Ri)= 2,5; 3; 3,5 mm. The observed value is contact width considering contact stress due to flange tightening and its measure by using finite element-based software. Mooney-Rivlin mathematical model used as rubber material model. Based on data from the simulation results, it can be obtained by using Taguchi Method; lips thickness (t) = 4,5 mm, lips length (l) = 6 mm, Outer Radius (Ro) = 6,9 mm and Inner Radius (Ri) = 3,5 mm.
Perilaku Tarik Komposit Laminat Serat Kulit Waru-Aluminium Suteja, Suteja; Purnowidodo, Anindito; Darmadi, Djarot B.; Sari, Nasmi Herlina
Jurnal 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.2019.010.01.3

Abstract

Waru fiber-aluminium laminate composite is engineering materials which have high stiffness, strength properties and weight to strength ratio. The aim of this study is to find out the effect of the number of waru fiber to tensile strength on laminate composite waru fiber-Aluminium. The process of laminating composite waru fiber-aluminium is done by vacuum infusion resin method with layers variation 1, 2, 3, 4  and fiber direction 45/45 angle woven basket. The result shows that the tensile strength of the waru-Al fiber composite decreases and the elongation value of the composite increases due to the addition of layers of fiber waru lower bond strength on adhesive-aluminum and adhesive-waru. The lowest tensile strength of 153,642 MPa has occurred in composite with 4 layers of waru fibre.
Perubahan Sifat Mekanis Komposit Hibrid Polyester yang Diperkuat Serat Sabut Kelapa dan Serat Ampas Empulur Sagu Leiwakabessy, Arthur Yanny; Purnowidodo, Anindito; Sugiarto, Sugiarto; Soenoko, Rudy
Jurnal Rekayasa Mesin Vol 4, No 3 (2013)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

Filler composite material with natural fibers is ranging widely known in the manufacturing industry. Environmentally friendly material, able to be recycled, as well as able to destroy it self by nature is a technological demands of today. Coco fiber and pith of sago pulp fiber are natural fibers that derived from the processing of waste coconut and sago palms are abundant in the Moluccas and they have not been used optimally. Both of these materials can be used for the manufacture of composite, using polyester resin as the matrix. The research emphasis to get the maximum value of variation of fiber volume fraction and fiber coir pith of sago waste to the value of bending strength and impact strength, according to the desired application. Research methods Lay Hands Up in the manufacture of hybrid fiber composites with a combination of coconut fiber (SSK): sago pith pulp fibers (SES) with a variation of 10% SSK: SES40%, 20% SSK: SES30%, 30% SSK: SES20%, 40% SSK: SES10%. Dependent variable in the study is the bending strength and impact strength. The result is that an increase in bending strength and impact strength with increasing volume fraction, which is higher than the hybrid fiber coir fiber and coconut fiber pith of sago waste. The highest bending strength of the fiber volume fraction of 30%SSK: SES20%, amounting to 97 354 MPa, and the lowest bending force on the fiber volume fraction of 10% SSK: SES40% of 73 701 MPa, while the highest value of impact strength at SSK fiber volume fraction of 40% :SES10%, at 0178 J/mm², and the lowest value of the impact strength on the fiber volume fraction of 10% SSK : SES40% at 0.053 J/mm².Keywords: Mechanical Properties, composites hybrid, polyester, coconut coir fiber, fiber pulp sago pith.
Distribusi dan Interaksi Tegangan Sisa antar Lubang Setelah Proses Cold Expansion Hole Wahjudi, Ari; Purnowidodo, Anindito; P, Andika H
Jurnal Rekayasa Mesin Vol 3, No 3 (2012)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (409.404 KB)

Abstract

It is well known that the main cause of a failure of structure is initiated by cracks on a member. A crack may originate easily in a region with high stress concentration. Because in the rivet and the bolt joining method are usual with number of holes, and to reduce the stress concentration, the compressive residual stress is introduced in the region near by the hole. The cold expansion hole technique is used to developed compressive residual on the vicinity of the edge hole. The present study was carried out by the computer simulation based on finite element method to investigate the distribution and interaction residual stress in the region between holes related to the cold expansion hole. The result of the study suggests that the distance between holes influence the state of residual stress and its magnitude. These cause by the deformed material between holes interact each other.Keywords: residual stress distribution, stress interaction, region between holes
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.
Hubungan Diameter Pasak, Lubang Sambungan Dan Ketebalan Plat Terhadap Distribusi Tegangan Sisa Wahjudi, Ari; Purnowidodo, Anindito; Pambudi, Wijil
Rekayasa Mesin Vol 2, No 3 (2011)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (275.524 KB)

Abstract

The discontinuities on the structures or members are often to be encountered such as, rivet and bolt holes as well as notches. These discontinuities are agents for stress raiser and itcan initiate cracks in the vicinity of holes or in the notch roots. It is well known that most of the fatigue failure is caused by cracks growth initiated from the discontinuities. To reduce possibilitythe initiation of crack in those stress raisers, the compressive residual stress, in general, is imposed to the region in which the stress concentrates. In the present study, using expansionhole technique carried out by aid of computer simulation, the effect of mandrel diameter and thickness of the blank to the residual stress in the vicinity of the hole is investigated. The result shows that the magnitude of the residual stress in the vicinity of the hole varies depending onthe magnitude of the expansion and the thickness of blank. In addition, in the certain distancefrom the hole, the tensile residual stress develops, hence, it may endanger a component because it causes the crack growth rate increase, as consequent, the life time of a componentis shorter.Keyword: mandrell diameter, hole diameter, thickness, residual stress distribution
Pengaruh Temperatur Pelat Landasan Selama Proses Friction Stir Welding Terhadap Kekuatan Tarik Sambungan Las Lembaran HDPE Setiawan, Agus; Irawan, Yudy Surya; Purnowidodo, Anindito
Jurnal Rekayasa Mesin Vol 2, No 3 (2011)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

The purpose of this study was to determine the weld ability of HDPE sheets (High Density Polyethylene) through the method of welding FSW (Friction Stir Welding). FSW is a new welding process, where joined of the material occurs in the solid state. Samples were welded with vertical milling CNC machines, while the type of connection is a butt joint. This study used three process parameters, two parameters are combined and one parameter value is constant, the parameters combined are temperature backing plate (30; 70; 110 and 150 oC) and the welding tool rotation speed (2200; 2300 and 2400 rpm), while the parameters with constant value is the welding speed (30 mm / min). In this research experiment conducted observations and analysis of surface textures welded joints, weld surface temperature during the process in front of and behind the welding tools, macro-structure of the welded joints, the maximum tensile strength and fracture tensile test results. From the results of this study was obtained that temperature backing plate during FSW process affects the maximum tensile strength and homogeneity of HDPE sheets welded joints. The maximum tensile strength of welded joints higher is 28.52 MPa or 95.07% of the maximum tensile strength of HDPE material, the maximum ultimate tensile strength values were obtained on the condition temperature backing plate t = 150 oC and the welding tool rotation speed n = 2300 rpm. Heating the material HDPEby backing plate during FSW process insulator properties of the material that is an obstacle inthe process of forming a perfect weld can be resolved.Keyword: temperatur backing plate, friction stir welding, the tensile strength of welded joints,HDPE sheets.
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
Pengaruh Kuat Arus Dan Campuran Gas Argon – Co2 Pada Pengelasan Gmaw Terhadap Kekuatan Tarik Dan Impact Pada Baja Karbon Medium Fasa Ganda Suyono, Eko Hendry; Irawan, Yudy Surya; Purnowidodo, Anindito
Jurnal Rekayasa Mesin Vol 2, No 2 (2011)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (467.586 KB)

Abstract

The function of shielding gas is the most importance in gas metal arch welding, because it protected the oxidation from out side. Argon and CO2 are the shielding gas that often used, choosing the CO2 on mixing shielding gas for some reasons that is readystock , cheap and good penetration.The aim of this research are to know the influence of welding current and mixing shielding gas Argon – CO2 against tensile strength and impact strength on weld of medium carbon steel dual phase. The method of this research as follow AISI 1045 steel forged on temprature 900°C - 950°C then dual phase on 770°C holding tome 90 minutes as dependent variables. The Welding currents are 80A, 100A and 120A , mixing shielding gas , Argon – CO2 : ( 0 – 100%), (100% - 0) and (50% - 50%). Both are as independent variables. Tensile strength and impact strength are as fixed variables.From this research, It can be concluded that welding current and shielding gas have the influenced toward heat input and caused the weld metal fusion or unfusion. This situation influenced toward tensile strength and impact strength.It was prooved that on 80A for the 3rd shielding gas had defect (incomplete fusion and porosity) so the tensile strength and impact strength was very low. On 120A, ArCO2 mixing shielding gas had the highest tensile and impact strength because no defect in it, good fusion. Keywords: Dual phase steel, welding current, mixing shielding gas Ar – CO2, GMAW, tensile strength, impact strength
Co-Authors A.A. Ketut Agung Cahyawan W Achfas Zacoeb Agung Sugeng Widodo Agus Setiawan Agus Suprapto Akhmad Ali Imron Amros Alfonsius Tuati, Amros Alfonsius Andika H P Ari Wahjudi Ariadi, Yudhi Arief Rizki Fadhillah Arthur Yanny Leiwakabessy Asroni Asroni Asroni, Asroni Avita Ayu Permanasari Bakri Bakri Bakri Bakri Bayu Agung Wicaksono Choiron, M. Agus Choiron, Mochamad Agus Choiron, Mochammad Agus Djarot B. Darmadi Djarot B. Darmadi, Djarot B. Eko Hendry Suyono Fauzi, Katanda Fajar Febi Rahmadianto Fikrul Akbar Alamsyah Gayuh Utami Dewi, Francisca Gembong Edhi Setyawan Hartanto, David Satya Helmy Purwanto Hermawan, Muhammad Vendy Hery Widijanto Hilmi Iman Firmansyah Ida, Zumrotul Imam Kusyairi Imam Kusyairi, Imam Jufra Daud Johanis Abanat Khairul Anam Kurnianingtyas, Diva Moch. Agus Choiron Moch. Agus Choiron Moch. Agus Choiron Muhammad Azmi, Muhammad Muhammad Fakhruddin Muhammad Sadat Hamzah Muhammad Syaiful Fadly Muhammad Syaiful Fadly Naafila, Amira Nasmi Herlina Sari Nurkholis Hamidi Putu Hadi Setyarini Raviko, Johansyah Redi Bintarto, Redi Rennie, Allan E.W. Rivai, Ahmad Riza Prawira Rudianto Raharjo Rudy Soenoko Rudy Soenoko Sari, Martina Puspita Setiyabudi, Sofyan Arief Setyabudi, Sofyan Arief Setyabudi, Sofyan Arif Slamet Wahyudi Sofyan Arief Sonief, Achmad As’ad Sri Chandrabakty Sugiarto S Suteja Suteja, Suteja Syahrizal Syahrizal Tamara F. Utama Tawaf, Nanang Teguh Dwi Widodo Wahyono Suprapto Wibowo, Farit Hendro Wijil Pambudi Winarto Winarto Wirawan, Willy Artha Wiwik Handayani Yudy Surya Irawan