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THE INFLUENCE OF MOBILE PHONE’S FORMS IN THE USER PERCEPTION Suteja, The Jaya; Tedjohartoko, Stephany
Industrial and Systems Engineering Assessment Journal (INASEA) Vol 13, No 1 (2012): INASEA Vol. 13 No. 1
Publisher : Industrial and Systems Engineering Assessment Journal (INASEA)

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Abstract

Not all types of mobile phone are successful in entering the market because some types of the mobile phone have a negative perception of user. Therefore, it is important to understand the influence of mobile phone’s characteristics in the local user perception. This research investigates the influence of QWERTY mobile phone’s forms in the perception of Indonesian user. First, some alternatives of mobile phone’s form are developed based on a certain number of mobile phone’s models. At the second stage, some word pairs as design attributes of the mobile phone are chosen to represent the user perception of mobile phone. At the final stage, a survey is conducted to investigate the influence of the developed form alternatives to the user perception. Based on the research, users perceive mobile phone’s form with curved top and straight bottom shapes and mobile phone’s form with slider and antenna as the most negative form. Meanwhile, mobile phone’s form with curved top and bottom shapes and mobile phone’s form without slider and antenna are perceived by the user as the most positive form.
THE ROLE OF STEP-NC IN IMPROVING THE PERFORMANCE OF SUPPLY CHAIN Suteja, The Jaya
Jurnal Teknik Industri Vol 7, No 2 (2005): DECEMBER 2005
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (161.228 KB) | DOI: 10.9744/jti.7.2.pp. 113-118

Abstract

The success of supply chain implementation in producing manufactured product heavily relies on the development of CAD system, CAM system, and CNC machine tool. However, current CAD system, CAM system, and CNC machine tool have some weaknesses in supporting supply chain implementation. This paper presents an overview of STEP-NC and its role in supply chain of manufactured product. STEP-NC is a new interface standard for CAD-CAM-CNC chain, which is developed by International Standards Organization (ISO) to extend STEP model data to define data for NC machine tools. By using STEP-NC, the link of all information in supply chain of manufactured product will be more flexible, faster, easier, safer, and more reliable.
Effect of Infill Pattern, Infill Density, and Infill Angle on the Printing Time and Filament Length of 3D Printing Suteja, Jaya
Jurnal Rekayasa Mesin Vol 12, No 1 (2021)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2021.012.01.16

Abstract

To optimize the 3D printing process, the influence of its parameters on the performance of the printing process needs to be investigated. This research investigates the effect of infill pattern, infill density, and infill angle on the printing time and the filament material length. First, this research collected the printing time and the filament length data for each combination of infill pattern, infill density, and infill angle. The data collection was conducted by implementing Repetier-Host v.2.1.6 software as a data acquisition tool. Then, the General Linear Model was applied to analyze the effect of infill pattern, infill density, and infill angle on the printing time and filament length. Based on the analysis, higher infill density increases the printing time for each infill pattern and each infill angle. Also, higher infill density increases the filament length for each infill pattern and each infill angle. The implementation of the Gyroid type of infill pattern reduces the required printing time for each density. Meanwhile, the implementation of the 3D honeycomb type of infill pattern increases the filament length for each infill angle. The use of the 45° infill angle increases the filament length and printing time. To reduce the filament length and printing time, the 90° infill angle should be implemented.
PERANCANGAN SISTEM FURNITUR MULTIFUNGSI UNTUK RUANG TREATMENT KLINIK KECANTIKAN DI SURABAYA Viona Christi; The, Jaya Suteja; Wyna Herdiana
CALYPTRA Vol. 7 No. 2 (2019): Calyptra : Jurnal Ilmiah Mahasiswa Universitas Surabaya (Maret)
Publisher : Perpustakaan Universitas Surabaya

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Abstract

Beauty clinics are very easy to find in urban areas. The use of shop / shop house as a clinic with limited space should be maximized as treatment room and doctor's office room. Inside the treatment room requires furniture.The purpose of this design is to design a furniture system for concise treatment rooms that can be used on a limited area. By using this furniture system, nurses and patients can move freely within the treatment room.Data collection methods used to design this furniture system is a qualitative method. Qualitative methods used are interviews and observation.From the design done, got the system furniture with a calm and relaxed color. The furniture system also uses Bauhaus design style, so the designed furniture system is not thematic and can be used at any beauty clinic.
PERANCANGAN MOULD PRODUK TUTUP GALON DISPENSER ANTI TUMPAH Buyung Moslem; Yon Haryono; The, Jaya Suteja
CALYPTRA Vol. 7 No. 2 (2019): Calyptra : Jurnal Ilmiah Mahasiswa Universitas Surabaya (Maret)
Publisher : Perpustakaan Universitas Surabaya

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Abstract

Anti-spilled dispenser galloncap product can’t be separate from human need for drinking water as a tool to help pouring water from gallon to dispenser without spilling the drinking water. The amount demand of those product is 25.000product per month with Rp 900,00 as the selling price. The purpose ofthis Final Project is to designing mould for anti-spilled dispenser gallon cap product within the specification of home industrial injection moulding machine. The result of mould designing is the mould consist of male, female, and stripper plate with the total dimension 200×105×150 mm.the mould have 2 cavity, a sprue and runnerswith total mass per injection 24,32 grams and the mould clamping force 8,9 tonnes. With those result is still under the capacity of the injection moulding machine. The mould having a cooling channel with the diameter is 10 mm and the length is 766 mm. The cooling channel is proved can handle to keep the mould in low temperature.Production cost for one product is Rp 303,00 so the product can be sell with lower price.
Optimasi Proses Pemesinan Milling Fitur Pocket Material Baja Karbon Rendah Menggunakan Response Surface Methodology The Jaya Suteja; Susila Candra; Yudistira Aquarista
Jurnal Teknik Mesin Vol. 10 No. 1 (2008): APRIL 2008
Publisher : Institute of Research and Community Outreach - Petra Christian University

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Abstract

Milling process is one of machining process mostly used to manufacture a component. In machining a component, to achieve higher production capacity, machining time should be minimized by increasing material rate removal. However, higher material rate removal will cause higher surface roughness. For that reason, machining parameter of milling process must be optimized. This research aims to develop mathematical model which can describe the relation between step over and depth of cut with surface roughness and machining time for two cut types. Subsequently, the purpose of this research is to find the combination of step over and depth of cut which resulting the maximum material rate removal and the minimum surface roughness. Milling process in this research is performed to machine a pocket feature of low carbon steel with dimension of 20 mm x 20 mm x 1 mm. To find the optimum milling parameter, the response surface methodology is used. Based on the optimization results, recommended step over and depth of cut is 6.7582 mm and 0.22 mm. By implementing this parameter, the achieved material rate removal and surface roughness for zig-zag cut type is 9.619 mm³/s and 1.5124 μm. Meanwhile, for spiral cut type the achieved material rate removal and surface roughness is 8.981 mm³/s dan 1.3824 μm. Abstract in Bahasa Indonesia: Proses pemesinan milling merupakan salah satu proses pemesinan yang banyak digunakan untuk pembuatan suatu komponen. Dalam proses pemesinan milling waktu yang dibutuhkan untuk membuat komponen harus seminimal mungkin agar tercapai kapasitas produksi yang tinggi. Parameter proses pemotongan yang maksimum akan menghasilkan laju pemakanan material (MRR) yang tinggi namun juga mengakibatkan kekasaran permukaan (Ra) yang tinggi pula. Oleh karena itu, parameter proses pemesinan milling yang optimum perlu untuk diketahui. Penelitian ini bertujuan untuk mendapatkan model matematis yang dapat menggambarkan hubungan antara kedalaman pemotongan dan pergeseran pahat dengan kekasaran permukaan dan waktu pemakanan material untuk dua macam cut type. Setelah itu, penelitian ini juga bertujuan untuk mencari kombinasi kedalaman potong dan pergeseran pahat untuk mendapatkan kondisi optimum yaitu MRR yang paling tinggi dan Ra yang paling rendah. Proses pemesinan milling pada penelitian ini dilakukan pada sebuah fitur pocket material baja karbon rendah dengan dimensi P x L x T adalah 20 mm x 20 mm x 1 mm. Dalam penelitian ini metode optimasi yang digunakan adalah Response Surface Methodology. Dari hasil optimasi diperoleh bahwa pergeseran pahat dan kedalaman potong yang memberikan respon MRR dan Ra yang optimal berturut-turut adalah 6,7582 mm dan 0,22 mm. Dengan menggunakan parameter proses tersebut, nilai MRR dan Ra yang didapatkan untuk zig-zag cut type adalah 9,619 mm³/detik dan 1,5124 μm sedang untuk spiral cut type adalah 8,981 mm³/detik dan 1,3824 μm. Kata kunci: Optimasi, milling, baja karbon rendah, response surface methodology.
THE EFFECT OF THERMAL ANNEALING BETWEEN GLASS TRANSITION TEMPERATURE AND CRYSTALLIZATION TEMPERATURE ON DIMENSIONAL ACCURACY OF 3D PRINTED PART The Jaya Suteja; Michael Evan; Sunardi Tjandra
Media Mesin: Majalah Teknik Mesin Vol 23, No 1 (2022)
Publisher : Program Studi Teknik Mesin, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v23i1.16280

Abstract

The dimensional accuracy of a 3D printed part affects the function, strength, and assembly process of the part. This study aims to determine the effect of the implementation of thermal annealing process on the dimensional accuracy of Polylactic Acid parts printed by Fused Filament Fabrication. This research uses 32 factorial design methodology with two replications. Two investigated parameters of the thermal annealing process are the annealing temperature and the holding time. The annealing temperature is set between the glass transition temperature and the crystallization temperature, which are 65 °C, 75 °C, and 85 °C. The holding times used are 45 minutes, 60 minutes, and 75 minutes. The response of this research is the dimensional deviation in the X, Y, and Z directions. Based on the experiment result, it was found that the use of higher annealing temperature increases the X, Y, and Z-direction deviations. The analysis result indicates that the use of annealing temperature slightly above the glass transition temperature results in a low degree of crystallization but produces higher dimensional accuracy than annealing temperature below the crystallization temperature. While the use of a holding time of 60 minutes increases the deviation in the X and Z directions but decreases the deviation in the Y direction.
THE ROLE OF STEP-NC IN IMPROVING THE PERFORMANCE OF SUPPLY CHAIN The Jaya Suteja
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 7 No. 2 (2005): DECEMBER 2005
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (161.228 KB) | DOI: 10.9744/jti.7.2.113-118

Abstract

The success of supply chain implementation in producing manufactured product heavily relies on the development of CAD system, CAM system, and CNC machine tool. However, current CAD system, CAM system, and CNC machine tool have some weaknesses in supporting supply chain implementation. This paper presents an overview of STEP-NC and its role in supply chain of manufactured product. STEP-NC is a new interface standard for CAD-CAM-CNC chain, which is developed by International Standards Organization (ISO) to extend STEP model data to define data for NC machine tools. By using STEP-NC, the link of all information in supply chain of manufactured product will be more flexible, faster, easier, safer, and more reliable.
IDENTIFIKASI JENIS INFILL PATTERN PADA PROSES 3D PRINTING YANG MENGHASILKAN HASIL CETAK DENGAN KEKUATAN TEKAN DAN PANJANG FILAMEN YANG OPTIMAL Samuel Eluzai Yedija Wijayanto; Rico Handoko; Jesslyne Chenia Noel; Timotius William Anggawirawan; The Jaya Suteja
Jurnal Rekayasa Mesin Vol. 13 No. 2 (2022)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v13i2.1097

Abstract

3D Printing technology becomes a potential solution to build various customized leg prosthetics. As a leg prosthetic must be able to hold a compressive force, it is important to find the compressive strength of the 3D printed part. The aim of this research is to find the infill pattern type which produces the 3D printed part with the highest compressive strength and the shortest filament length. This research uses the Fused Filament Fabrication method to print 24 parts made of Polylactic Acid using 12 different infill patterns with 50% density. All printed parts are designed to replicate the ASTM D695 specimen. After that, the compressive strength of each part is measured by using a Universal Testing Machine. And the filament length of each part is estimated by using slicer software. Based on the experiment result, the infill pattern with the highest compressive strength is the 3D Honeycomb type. However, this infill pattern requires the longest filament length compared to other infill patterns. In order to achieve a similar value of compressive strength with the minimum required material, the Cubic type is recommended to be implemented.
Optimization of Infill Density, Layer Height, and Shell Thickness to Achieve Maximum Bending Strength and Minimum Printing Time of PLA 3D Printed Part The Jaya Suteja
Jurnal POLIMESIN Vol 21, No 5 (2023): October
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i5.3883

Abstract

3D printing has advantages in making customized products, such as leg prosthetics. One of the required properties of 3D-printed leg prosthetics is their resistance to bending stress. Based on the literature review, the influence of the interaction among layer height, infill density, and shell thickness on the bending strength and printing time has not yet been investigated or optimized. This study aims to investigate the effect and optimize the layer height, infill density, and shell thickness to achieve the maximum bending strength and minimum printing time of a Polylactic Acid 3D printed part. This research studies three independent variables: layer height, infill density, and shell thickness. The independent variables of this research are bending strength and printing time. The bending test is conducted according to the ISO 178 standard. The printed specimen is tested using the bending testing machine Tarno Grocki to measure the maximum bending load the specimen can hold. The printing time is measured by using a stopwatch. The Response Surface Method is used as an optimization method to find the value of the maximum bending strength and minimum printing time of the 3D printed part. The optimum responses are achieved using 40 % infill density, 0.3 mm layer height, and 1.6 mm shell thickness. The maximum bending strength is 118. 5129 MPa and the minimum printing time is 11.1867 minutes.