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All Journal Rotasi Rekayasa Mesin Semesta Teknika Media Mesin: Majalah Teknik Mesin JMPM (Jurnal Material dan Proses Manufaktur) Turbo : Jurnal Program Studi Teknik Mesin INDONESIAN JOURNAL OF APPLIED PHYSICS BERDIKARI : Jurnal Inovasi dan Penerapan Ipteks JMM (Jurnal Masyarakat Mandiri) Journal of Engineering, Technology, and Applied Science (JETAS) Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) Prosiding Seminar Nasional Program Pengabdian Masyarakat Jurnal Polimesin
Budiyantoro, Cahyo
Universitas Muhammadiyah Yogyakarta
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Perancangan Injection Blowing Tools dengan Line Slider untuk Mesin Blow Molding dengan Kapasitas Volume 300 Ml Ikhsan, Subkhan Nur; Budiyantoro, Cahyo; Suwanda, Totok; Nugroho, Adi
JMPM : Jurnal Material dan Proses Manufaktur Vol 2, No 1 (2018): JUNI 2018
Publisher : JMPM : Jurnal Material dan Proses Manufaktur

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Abstract

Blow molding machine is a machine that used to produced plastic bottle with injection air system to blowing the soft preform (±100℃)  at 7 bar pressure of air. They are two main components in injection blowing tools i.e, injection tools to distribute the high pressure air from compressor to the bottle preform and the line sliders to make a mold cavity can moving when the injection process ongoing and finished. To build the injection blowing tools, they are several main material that use, on the line sliders use the main material of low carbon steel type A36 ( 0,25% - 0,29% C) with strip and plate with force of 360 Ksi ( 250 MPa ), and the injection tools use the main material of Aluminium-alloy 4032 (Al, Si 12,5%, Mg, Cu, Ni) because it easy to make an model or profil with reasonable price. The main material on the shafts holder injector and blow pin use stainless steel 304 with max force of 515 MPa. The process to joint between the components are applying the welding model with fillet type and average on high of the neck weld 3 mm and use electrodes of RD-260 which E6013 electrode class with maximum strength 60 Ksi and use the bolt and nuts which average from material of SS 304 with size M6 - M16. In  the process injection, the ratio of large development due to the process injection ( BUR ) is 4 with the size of a bottle preform long 99 mm thick 2 mm and diameter 26 mm.
Optimalisasi Parameter Proses Injeksi Menggunakan Simulasi Moldflow untuk Meminimalkan Cycle Time dan Eliminasi Short Shot pada Produk Tempat Anwar, M. Choirul; Budiyantoro, Cahyo; Thoharudin, Thoharudin
JMPM : Jurnal Material dan Proses Manufaktur Vol 2, No 1 (2018): JUNI 2018
Publisher : JMPM : Jurnal Material dan Proses Manufaktur

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Abstract

Plastic materials in the manufacture of food and household appliances have been widely used by the public. Various forms and functions have been made, one of which is using an injection molding machine. With an injection molding machine a packaging design or a fairly complex household appliance can be produced. One of the products that the market is interested in is a traditional rice container. This traditional rice container product uses polypropylene material. In this rice container production process there are several problems, namely the cycle time that is too long and the occurrence of short shots on the product. Of these problems, simulations and optimizations that have been carried out provide better results. Optimization carried out in this study is the process parameters using moldflow simulation. Confirmation based on S / N Ratio analysis, ANOVA on the best parameters, after the optimization simulation is obtained from the previous time 172.59 seconds to 23.88 seconds. Short shot and cavity weight obtained increased from 96.99 grams to 99.36 grams.
Optimasi Keakuratan Dimensi dan Kekasaran Permukaan Potong Material Akrilik dengan Proses Laser Menggunakan Metode Taguchi dan PCR-TOPSIS Nugroho, Adi; Hutama, Adhi Setya; Budiyantoro, Cahyo
JMPM : Jurnal Material dan Proses Manufaktur Vol 2, No 2 (2018): DESEMBER 2018
Publisher : JMPM : Jurnal Material dan Proses Manufaktur

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Abstract

AbstrakMesin laser banyak digunakan di berbagai jenis industri, baik di industri manufaktur dan di industri kerajinan / kreatif. Mesin laser sering digunakan untuk memotong dan mengukir objek yang memiliki bahan yang sulit dan sifat kontur yang tidak dapat dilakukan oleh mesin konvensional. Bahan akrilik sering ditemukan di industri kerajinan dan kreatif yang menggunakan mesin laser. Bahan akrilik dapat diolah menjadi produk bernilai tinggi. Ada berbagai macam produk yang terbuat dari akrilik yang dibentuk melalui proses pemotongan laser, seperti gantungan kunci, souvenir, piala, aksesoris, barang dagangan, plakat, dan produk kreatif. Proses pembuatan menggunakan mesin laser ternyata juga ada masalah, seperti kerataan produk, dan panjangnya tingkat persimpangan. Berdasarkan literasi, peneliti mengoptimalkan beberapa parameter yang ditemukan pada mesin pemotong laser, seperti kecepatan potong, energi yang dibutuhkan, dan jarak nozzle. Hasilnya adalah kehalusan produk yang dihasilkan, dan dimensi sesuai dengan desain. Metode pengujian optimasi yang digunakan adalah metode Taguchi yang dikombinasikan dengan metode PCR (Process Capability Ratio), dan TOPSISAbstractLaser machines are widely used in various types of industries, both in the manufacturing industries and in the craft/creative industries. Laser machines are often used to cut and engrave objects that have difficult material and contour properties that conventional machines cannot do. Acrylic materials are often found in the craft and creative industries that use laser machines. Acrylic materials can be processed into high-value products. There are various kinds of products made from Acrylic which are formed through a laser cutting process, such as key chains, souvenirs, trophies, accessories, merchandise, placards, and creative products. The process of making using a laser machine turns out that there are also problems, such as flatness of the product, and the length of the intersection rate. Based on the literacy, the researcher optimizes several parameters found on laser cutting machines, such as cutting speed, required energy, and nozzle distance. The result is the fineness of the product produced, and the dimensions according to the design. The optimization testing method that used was the Taguchi method which was combined with the PCR (Process Capability Ratio) method, and TOPSIS (Technique for Order Performance by Similarity to Ideal Solution).
Desain dan Optimasi Injection Mold Sistem Slider pada Produk Stick T15 Ni'am, Lutfi Khoirul Miftakhul; Budiyantoro, Cahyo; Rahman, Muhammad Budi Nur
Jurnal Rekayasa Mesin Vol 8, No 3 (2017)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4606.055 KB) | DOI: 10.21776/ub.jrm.2017.008.03.6

Abstract

The design of injection molding is the initial process to produce a large-scale product of plastic material which heated and injected into the mold. Design of the preform mold using the plastic material polyethylene terephthalate with the construction of the slider, so that the products which was made have undercut and can’t be made in the core section and cavity. The purpose of this design is to design the slider on the product preform. The software which used for this design using CATIA V5R19 and simulation software production using Autodesk Moldflow Insight 2016. The step on designing a unit injection mold in the preform includes several steps. The first step is identify the product, the calculation of the cooling and input the data calculation result to an moldflow. The second step is design construction slider and determine the mold material as well as calculating the construction mold. The third step is pour the results of the design in figure 2D. Based on the analysis results from moldflow obtained cooling optimal.i.e. the type of cooling series type 2, and if can be concluded construction of the mold said to be safe if the stress, the style and the determination  of material which occurs under the stress and style of permit.
Desain dan Optimasi Injection Mold dengan Sistem Slider pada Produk Hardcase Handphone Hidayat, Muhammad Firdaus; budiyantoro, Cahyo; Rahman, Muhammad Budi Nur
ROTASI Vol 19, No 4 (2017): VOLUME 19, NOMOR 4, OKTOBER 2017
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (349.413 KB) | DOI: 10.14710/rotasi.19.4.217-225

Abstract

Peningkatan penggunaan handphone pada era digital saat ini, berdampak pada peningkatan penggunaan pelindung handphone. Hardcase merupakan jenis pelindung handphone dengan bahan material plastik dan proses pembentukan menggunakan metode injection molding. Metode tersebut membutuhkan mold (cetakan) sebagai tempat untuk membentuk/menghasilkan sebuah produk. Dari latar belakang peningkatan penggunaan handphone, maka dibutuhkan perancangan mold untuk menghasilkan produk pelindung handphone berbahan plastik dengan jenis hardcase, sebagai solusi untuk menyediakan aksesoris berupa pelindung handphone pada para pengguna handphone. Pada perancangan hardcase, material yang digunakan pada produk yaitu polycarbonate iupilon GS2010MPH, konstruksi pada pembentukan hardcase menggunakan sistem slider dengan mekanisme angular pin. Software yang digunakan untuk perancangan mold, yaitu catia v5r21 dan software simulasi produk menggunakan autodesk moldflow insight 2016. Simulasi yang dilakukan, yaitu fill dan cooling, masing-masing dibandingkan untuk mendapatkan hasil yang optimal serta dapat diterapkan pada perancangan mold hardcase. Hasil perbandingan dan analisa dari moldflow insight yang dilakukan didapat, fill time yaitu 0,9630 s dengan clamping force 326,2 ton. Kemudian sistem cooling mengunakan tipe seri dengan hasil simulasi Circuit coolant temperature, yaitu 25,63 0C dan hasil simulasi deflection, all effects:deflection, yaitu  0,1411 mm dan hasil simulasi circuit heat removal efficiency, yaitu 1. Hasil perhitungan yang dilakukan pada konstruksi desain mold, dinyatakan aman karena nilai tegangan yang terjadi dibawah tegangan bahan material. Dari hasil perancangan desain dan simulasi, maka mesin yang digunakan yaitu Beston 4500.
PENGARUH WAKTU DAN SUHU PROSES ELEKTROLESSPLATING NIKEL TERHADAP KARAKTERISTIK FISIK DAN MEKANIK PLASTIK ABS Sunardi, Sunardi; Rahman, Muhammad Budi Nur; Budiyantoro, Cahyo
Semesta Teknika Vol 22, No 1 (2019): MEI 2019
Publisher : Semesta Teknika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/st.221237

Abstract

AbstrakPlastik ABS digunakan dalam industri otomotif, rumah tangga dan elektronik karena kekuatannya tinggi, keras, liat, tahan korosi, tahan panas, mudah dibentuk dan bisa dilapisi. Electrolessplating nikel adalah teknik metalizing bahan non logam agar bersifat logam. Penelitian proses electrolessplating nikel pada plastik ABS dilakukan dengan variasi suhu elektrolit yaitu 40oC, 50oC, 60oC, dan 70oC dan waktu proses pelapisan selama 4, 6, 8, 10 dan 12 menit. Karakterisasi yang dilakukan adalah mengetahui struktur mikro dan ketebalan lapisan menggunakan mikroskop optik, dan karakteristik mekanik meliputi, pengujian kekasaran,  kekerasan menggunakan Shore D Hardness dan pengujian keausan. Peningkatan suhu elektrolessplating meningkatkan kekasaran permukaan dari 0,170 µm pada suhu 40oC menjadi 0,422 ?m pada suhu 70oC sedangkan semakin lama proses elektrolessplating dapat menghaluskan permukaan dari 0,70 µm untuk waktu 4 menit menjadi 0,33 µm untuk waktu 12 menit. Peningkatan suhu dan waktu proses elektrolessplating menurunkan nilai keausan spesifik dari 1,9x10-3 mm2/kg pada suhu 40oC menjadi 0,4 x 10-3 mm2/kg untuk suhu 70oC dan 2,62x10-3 mm2/kg pada waktu 4 menit menjadi 0,66x10-3 mm2/kg untuk waktu 12 menit. Suhu dan waktu proses elektrolessplating tidak banyak meningkatkan nilai kekerasan rata-rata sebesar 84,5 SDH. Proses electrolessplating nikel pada suhu 50oC menghasilkan ketebalan lapisan optimum sebesar 5,56 ?m karena ion yang terbentuk semakin banyak  namun pada suhu 60oC dan 70oC ketebalannya berkurang sebesar 4,57 µm dan 3,72 µm. Penambahan waktu proses electrolessplating meningkatkan ketebalan lapisan, dari 1,29 ?m dalam waktu 4 menit menjadi 3,98 ?m dalam waktu 12 menit karena ion yang mengendap pada permukaan semakin banyak. AbstractABS plastic is used in the automotive, household and electronic industries because of its high strength, hardness, clay, corrosion resistance, heat resistance, easy to form and can be coated. Nickel electrolessplating is a technique of metalizing nonmetal materials to be metal. Research on the nickel electrolessplating process in ABS plastic was carried out with variations in the temperature of the electrolyte that is 40oC, 50oC, 60oC, and 70oC and coating time for 4, 6, 8, 10, and 12 minutes. Hardness and wear testing. An increase in temperature electro-less plating increase the surface roughness of 0.170 µm at a temperature of 40oC to 0,422 ?m at a temperature of 70oC, while the longer process of electroless plating smooth the surface of from 0.70 µm to 4 minutes to 0.33 µm for 12 minutes. An increase in temperature and the process time electro-less plating lower the value of wear specific than 1,9x10-3 mm2/kg at a temperature of 40oC to 0,4x10-3 mm2/kg for a temperature of 70oC and 2,62x10-3 mm2/kg at the time of 4 minutes to 0,66x10-3 mm2/kg for 12 minutes. The temperature and time of process electroless-plating not much increase the value of an average hardness of 84,5 SDH. The nickel electrolessplating process at a temperature of 50oC produces an optimum layer thickness of 5.56 ?m because more and more ions are formed but at a temperature of 60oC and 70oC the thickness decreases by 4.57 ?m and 3.72 ?m. The addition of electroless-plating process time increases the thickness of the layer, from 1.29 ?m in 4 minutes to 3.98 ?m in 12 minutes because more ions settle on the surface. 
THERMAL CHARACTERIZATION OF MIXED VIRGIN-RECYCLE ACRYLONITRILE BUTADIENE STYRENE Budiyantoro, Cahyo; Sosiati, Harini; Nugroho, Adi; Anggariawan, Arista
JMPM : Jurnal Material dan Proses Manufaktur Vol 3, No 2 (2019): DESEMBER 2019
Publisher : JMPM : Jurnal Material dan Proses Manufaktur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.3241

Abstract

Acrylonitrile butadiene styrene (ABS) adalah bahan plastik yang banyak digunakan pada pembuatan komponen otomotif. Limbah ABS dari industri injection molding berupa sisa potongan runner memiliki kualitas yang baik sebagai campuran dalam siklus proses produksi. Pencampuran ini bermanfaat secara ekonomis untuk mengurangi penggunaan bahan virgin. Salah satu parameter penting dalam proses injeksi adalah sifat thermal untuk menentukan titik lebur yang sesuai, sifat thermal dari campuran bahan daur ulang dan bahan virgin akan mengalami perubahan jika dibandingkan bahan aslinya. Penelitian ini bertujuan untuk mempelajari sifat termal dari bahan acrilonitrile butadiene styrene (ABS) virgin yang dicampur dengan ABS daur ulang pada variasi 15%, 30%, dan 45% (% berat bahan daur ulang). Spesimen dibuat menggunakan mesin injeksi molding MEIKI 70 Ton dan dievaluasi sifat termalnya dengan menggunakan Differential Scanning Calorimetry (DSC) sesuai standard ASTM 3418-2015. Hasil uji DSC menunjukkan bahwa nilai glass transition temperature (Tg) pada variasi campuran  15%, 30% dan 45% masing-masing adalah 104.08 °C, 104.63 °C dan 105.46 °C. Sementara itu, untuk nilai melting temperature (Tm) dari ketiga variasi tersebut masing masing adalah 139,6 °C, 139,72 °C dan 132,2 °C, sehingga dapat disimpulkan bahwa penambahan kandungan daur ulang bahan ABS memberikan peningkatan pada nilai Tg dan penurunan pada nilai Tm meskipun tidak signifikan. Acrylonitrile Butadiene Styrene is a common material for automotive components. ABS industrial waste in the form of a cut off injection-molded runner is a high-quality plastic waste that can be used as additional material in the production cycles. For an economic reason, adding waste material is very beneficial because the amount of virgin material can be minimized. One of the important parameters on the injection molding process is a thermal related parameter; the thermal properties of mix waste-virgin material could be different from those of the virgin material. This research was aimed to evaluate the thermal properties of mix ABS waste-virgin material. The content of waste material was made in 3 variations: 15%, 30%, and 45% (% wt). The molding specimens were made by using a 70-ton injection molding machine, and the thermal properties were measured by using Differential Scanning Calorimetry (DSC) according to ASTM  3418-2015 standard. The results showed that the glass transition temperature (Tg) at waste content of 15%, 30%, and 45% are 104.08 °C, 104.63 °C, and 105.46 °C, respectively, whereas their respective melting temperatures were 139.6 °C, 139.72 °C dan 132.2 °C. Those results were lower than the temperature of virgin material. It can be said that the waste content gives effect on increasing of Tg and reducing of Tm. 
MANUFAKTUR DAN UJI KINERJA PROSES VACUUM FORMING UNTUK BAHAN POLYMETHYL METHACRYLATE (PMMA) Permana, Cepi Rahmatullah; Budiyantoro, Cahyo; Prabandono, Bayu
JMPM : Jurnal Material dan Proses Manufaktur Vol 3, No 1 (2019): JUNI 2019
Publisher : JMPM : Jurnal Material dan Proses Manufaktur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.3131

Abstract

AbstrakMesin pembuat kemasan yang sederhana dan murah dengan kinerja yang memadai diperlukan untuk meningkatkan nilai ekonomis produk industri rumah tangga (UKM). Penelitian ini bertujuan untuk membuat dan menguji kinerja mesin vakum forming pada bahan Polymethylmetacrylate (PMMA).Tahapan dalam pembuatan mesin ini adalah studi rancangan, manufaktur bagian mesin, cetakan, perakitan dan uji coba kinerja. Cetakan dibuat dari bahan kayu jati berukuran 140 mm x 210 mm x 15 mm. Pengujian kinerja mesin dilakukan dengan memanaskan lembaran plastik PMMA tebal 0.25 mm pada variasi waktu pemanasan 15, 20 dan 25 detik dan waktu vakum 5, 10 dan 15 detik, menggunakan pemanas 100 watt dan tekanan vakum maksimum 12 kPa. Dimensi dan geometri produk dibandingkan dengan cetakan dan dievaluasi dengan pengukuran linier serta pengamatan visual.Hasil pengujian menunjukkan bahwa kombinasi waktu pemanasan 15 detik dan waktu vakum 5 detik menghasilkan produk dengan radius yang besar pada bagian dasar. Kombinasi waktu pemanasan 20 detik dan waktu vakum 10 detik dapat memperkecil ukuran radius. Hasil cetakan yang mendekati bentuk cetakan diperoleh dengan parameter suhu pemanasan 105 ?, waktu pemanasan 25 detik dan waktu vakum 15 detik.AbstractA simple and inexpensive packaging machine with adequate performance is needed to increase economic added value of the smal scale industries. This study aims to manufacture and to evaluate the performance of customized vacuum forming machine on Polymethylmetacrylate (PMMA)l. Manufacturing of components and molds, assembly and performance testing have been carried out to build the machine. The mold was made of teak wood with the dimension of 140 mm x 210 mm x 15 mm. Machine performance testing was done by heating a 0.25 mm thick PMMA sheet with heating time variation of 15, 20 and 25 second and vacuum time of 5, 10 and 15 second, respectively. The heating power was 100 watts and the maximum vacuum pressure was 12 kPa. Product quality were compared with mold by linear measurements and visual observations.The processing parameter of 15 second heating time and 5 second vacuum time produced a specimen with a large radius at the bottom. The combination of 20 second heating time and 10 second vacuum time reduced the size of the radius. The best product can be obtained with a heating temperature of 105 ?, heating time of 25 second and a vacuum time of 15 second. 
PENGARUH KECEPATAN PUTAR TOOL DAN SUDUT SHOULDER SAMBUNGAN FRICTION STIR SPOT WELDING PADA BAHAN POLYPROPYLENE Nugroho, Aris Widyo; Dwi Saputra, Muhammad Rifai; Budiyantoro, Cahyo
Semesta Teknika Vol 22, No 2 (2019): NOVEMBER 2019
Publisher : Semesta Teknika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/st.222250

Abstract

Penyambungan bahan thermoplastic polypropilen dengan teknik Friction stir spot welding (FSSW) telah banyak dilakukan. Walaupun kekuatannya sudah mencukupi, masih dihasilkan keyhole dan bekas shoulder yang cukup besar karena penggunaan ukuran soulder dan pin besar. Penelitian ini menginvestigasi sambungan polypropilen dengan teknik FSSW menggunakan shoulder dan pin lebih kecil pada geometri shoulder yang berbeda. Penelitian di awali dengan pemotongan lembaran polypropylene dengan panjang 150mm, lebar 30mm dan tebal 5mm. Sambungan tumpang sesuai dengan standar EN 12814-2 digunakan dalam penyambungan ini. Proses penyambungan dilakukan pada kecepatan putar 985, 1660, 2350 rpm dengan dua jenis tool (shoulder angle 0o dan 5o). Sambungan diamati struktur makro, kekerasan dan kapastas beban tariknya. Hasil penelitian menunjukan bahwa semua sambungan memiliki kegagalan getas. Seiring bertambahnya sudut shoulder dan kecepatan putar tool, ukuran nugget dan welding zone meningkat, sehingga meningkatkan kapasitas beban tari mencapai 2116 N. Geometri tool 2 berpotensi untuk dapat diaplikasikan dalam sambungan FSSW. The joining of thermoplastic polypropylene material using the Friction stir spot welding (FSSW) technique has been developed. Although the strength is sufficient, it still produces a large keyhole and shoulder marks due to the use of a large shoulder and pin size. This research investigates polypropylene joint with the FSSW technique using smaller shoulders and pins on different shoulder geometries. The research began by cutting of polypropylene sheets into 150 mm long and 30 mm wide and 5 mm thick. Specimens according to EN 12814-2 were used in this welding joint. The welding process is carried out at rotational speeds of 985, 1660, 2350 rpm with two types of tools (shoulder angle of 0o and 5o). The welding joint was then observed for macrostructure, hardness, and tensile load-bearing capacity. The results showed that all welding joints had a brittle failure. The increasing of the shoulder angle and the rotational speed increase the nugget size and welding zone thickness resulting in a higher tensile load-bearing capacity which reaches up to 2116 N. The tool with the geometric being used has the potential to be applied in the FSSW joint.
PENINGKATAN KEKUATAN LENTUR PRODUK 3D PRINTING BERBAHAN PETG DENGAN OPTIMASI PARAMETER PROSES MENGGUNAKAN METODE TAGUCHI Riza, Eduar Iqbal; Budiyantoro, Cahyo; Nugroho, Aris Widyo
Media Mesin: Majalah Teknik Mesin Vol 21, No 2 (2020)
Publisher : Program Studi Teknik Mesin, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v21i2.10856

Abstract

Optimization of 3D printing process parameters with PETG material to the flexural strength response using the Taguchi method has been carried out. This study uses L9 (33) orthogonal arrays experimental design using three process parameters, namely nozzle temperature, extrusion width, and feed rate  with three levels in each parameter (240 ° C, 245 ° C, 250 ° C, 0.3 mm 0.35mm, 0.4mm, 50%, 75%, 100%). Specimens were prepared according to ISO 178: 2010 Standard using a Prusa-i3 3D printer. Following this their dimensions, mass, production time, and flexural strength were examined. The flexural strength response was analyzed using the Taguchi method via SN Ratio and ANOVA analysis to obtain the optimal parameters. The results showed that the most influential process parameters on the response of flexural strength respectively were the nozzle temperature, extrusion width and feed rate with an optimal combination of parameters namely nozzle temperature (250 ° C), extrusion width (0.35 mm), and feed rate (75%). The confirmation experiments showed that the optimal parameter combination obtained the highest flexural strength with a smaller data deviation (52.98 ± 0.65 MPa). In addition, all products being produced posses dimensions according to the standards used.
Co-Authors Adam, Muhammad Kevin Adhi Setya Hutama Adi Nugroho Agustina, Nurhaliza Ali Khaerul Mufid Anggariawan, Arista Anggariawan, Arista Anwar, M. Choirul Aris Widyo Nugroho As’ari, Muhammad Agung Atikasari, Tiara Cahya Attoriq, Fajri Bayu Prabandono Bilyferdin, Bastian Cahyo Trisedyo Utomo Chusnul Azhar Dede Tohidin Diki Irwansyah Dwi Saputra, Muhammad Rifai Dwi Saputra, Muhammad Rifai Eduar Iqbal Riza Fawwas Ghazy, Muhammad Ikbar Ferriawan Yudhanto, Ferriawan Fitri Wahyuni Fitri Wahyuni Fitroh Anugrah Kusuma Yudha Gesang Nugroho Ghanim Raihan Ghozali, Mohamad Yuzdhie Ghozali Ghozali, Mohamad Yuzdhie Ghozali Harahap, Yudani Alamsyah Herda Agus Pamasaria Hidayat, Muhammad Firdaus Ikhsan, Subkhan Nur Irawan, Fabio Dwi Bagus Irawan, Fabio Dwi Bagus Irmawan, wiwin Irwansyah, Diki Iwan Setiono J. Wawan Joharwan Johanes Wawan Joharwan khadliq, muhammad M. Choirul Anwar M. Puji Ibnu Mimbar Maulana Maemunah Maemunah Maulana, M. Puji Ibnu Mimbar Mufid, Ali Khaerul Muhammad Agung As’ari Muhammad Budi Nur Rahman Muhammad Budi Nur Rahman Muhammad Budi Nur Rahman, Muhammad Budi muhammad khadliq Ni'am, Lutfi Khoirul Miftakhul Nurhadi, Taufik Nurhaliza Agustina Pamasaria, Herda Agus Permana, Cepi Rahmatullah Permana, Cepi Rahmatullah Perwita Kurniawan Pradana, Benanta Ogi Pratama, Wahyu Aji Rahman, Muhammad Budi Nur Raihan, Ghanim Riza, Eduar Iqbal Sahputra, Wahyu Puji Sosiati, Harini Subkhan Nur Ikhsan Sukamta Sukamta Sukamta Sukamta Sunardi Sunardi Sunardi, Sunardi Syahputra, Kevin Atila Taufik Nurhadi TH Adi Nugroho Thoharudin Thoharudin Thoharudin, Thoharudin Tiara Cahya Atikasari Totok Suwanda Tri Hannanto Saputra Tri Wahyono Widyasmoro, Widyasmoro wiwin Irmawan Yudani Alamsyah Harahap