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All Journal Jurnal Rekayasa Mesin JMPM (Jurnal Material dan Proses Manufaktur) Journal of Energy, Mechanical, Material and Manufacturing Engineering Techne : Jurnal Ilmiah Elektroteknika JURNAL KAJIAN TEKNIK MESIN International Journal of Applied Sciences and Smart Technologies Politeknosain Jurnal Tekstil: Jurnal Keilmuan dan Aplikasi Bidang Tekstil dan Manajemen lndustri

TH Adi Nugroho

Politeknik ATMI Surakarta

Author-ID : 3233733

Aerospace Engineering Agriculture, Biological Sciences & Forestry 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 Mathematics Mechanical Engineering

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Effect of Mould and Melt Temperature on the Properties of Styrene Acrylonitrile Moulded Parts Budiantoro, Cahyo; Nugroho, Adi
Journal of Energy, Mechanical, Material and Manufacturing Engineering Vol 3, No 1 (2018)
Publisher : University of Muhammadiyah Malang

The quality of injection moulded parts can be influenced by processing parameters. The effect of mould temperature and melt temperature on the weight and shrinkage of Styrene Acrylonitrile moulded part was observed in this research. It was found that by increasing mold temperatures at constant melt temperature and injection speed, the weight of the part decreased and the shrinkage value slightly decreased. On the other hand, by increasing melt temperature at constant mold temperature and injection speed, the part weight increased. Both mold temperature and melt temperature gave only a small effect because the temperature difference was not too large.

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

Show Abstract | Download Original | Original Source | Check in Google Scholar

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).

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

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.

Perancangan Injection Blowing Tools dengan Line Slider untuk Mesin Blow Molding dengan Kapasitas Volume 300 Ml Subkhan Nur Ikhsan; Cahyo Budiyantoro; Totok Suwanda; Adi Nugroho
JMPM (Jurnal Material dan Proses Manufaktur) Vol 2, No 1 (2018): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.2120

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.

Optimasi Pembuatan Scaffold dengan Struktur Pori-Pori Beraturan Menggunakan Metode Response Surface Method Adhi Setya Hutama; Adi Nugroho
JMPM (Jurnal Material dan Proses Manufaktur) Vol 4, No 1 (2020): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v4i1.8819

Cedera yang diakibatkan kecelakaan lalu lintas dapat menyebabkan korban menderita patah tulang, cacat tubuh, hingga kematian. Korban yang mengalami kerusakan tulang dapat disembuhkan dengan restorasi tulang, yaitu dengan menanamkan tulang buatan pada jaringan tulang yang rusak. Salah satu contoh metode implan adalah dengan membuat scaffold yang terbuat dari biomaterial hidroksiapatit (HA). scaffold dirancang bersarkan pada ukuran kerusakan tulang, dan dicetak dengan mesin cetak 3D ABEF (Aqueous-based extraction fabrication). Penelitian terkait pengoptimalan pembuatan scaffold dilakukan menggunakan Response Surface Method, dengan menggunakan grafik kontur plot dan response optimizer. Parameter pembuatan scaffold yang dioptimasikan adalah kecepatan gerak sumbu, kecepatan ekstrusi, dan diameter nozzle. Analisis ini bertujuan untuk menemukan nilai kesalahan terkecil dari pembuatan scaffold, sehingga didapatkan bentuk scaffold yang optimal dari dimensi scaffold dan ukuran rongga. Berdasarkan hasil penelitian, optimasi pembuatan scaffold menggunakan Response Surface Method menghasilkan kombinasi parameter pembentuk scaffold, dengan kecepatan ekstrusi 30 mm / s, kecepatan sumbu 30 mm / s, dan diameter nozzle 0,8 mm. Injuries caused by traffic accidents can cause victims to suffer broken bones, disability, and even death. Victims who have bone damage can be cured by bone restoration, which is by implanting artificial bone in damaged bone tissue. One example of an implant method is to make a scaffold made from hydroxyapatite (HA) biomaterials. The scaffold is designed based on the size of the bone damage, and is printed with a 3D ABEF (Aqueous-based extraction fabrication) printing machine.Research related to optimizing scaffold making is done using the Response Surface Method, using plot contour graphs and response optimizers. Optimized scaffold manufacturing parameters are the axis of movement speed, extrusion speed, and nozzle diameter. This analysis aims to find the smallest error value from making scaffold, so we get the optimal form of scaffold from scaffold dimensions and cavity size. Based on the research results, optimization of scaffold making using the Response Surface Method produces a combination of scaffold forming parameters, with an extrusion speed of 30 mm / s, an axis speed of 30 mm / s, anda nozzle diameter of 0.8 mm

Analisa Gerak Putar Eksentris Continous Satu Massa Horisontal pada Sistem Kendali NCTF Berbasis Arduino Uno Perwita Kurniawan; Adi Nugroho
Techné : Jurnal Ilmiah Elektroteknika Vol. 17 No. 01 (2018)
Publisher : Fakultas Teknik Elektronika dan Komputer Universitas Kristen Satya Wacana

Sistem kendali nominal characteristic trajectory following (NCTF) adalah sebuah sistem kendali yang terdiri dari dua buah sub sistem, yaitu nominal characteristic trajectory (NCT) dan kompensator. Pembuatan pengendali berdasarkan pada eksperimen open-loop sederhana sehingga sistem kendali NCTF sangat praktis untuk digunakaan. Arduino Uno digunakan sebagai pengendali sistem putar eksentris satu massa horisontal. Perintah ke Arduino Uno diberikan oleh perangkat lunak MATLAB®, selanjutnya Arduino Uno akan menggerakkan motor dan membaca encoder. Performa sistem diukur dengan melakukan pengujian menggunakan variasi pembebanan dan variasi gerakan continous. Variasi pembebanan yang diberikan diantaranya 0, 0.066, dan 0.156Kg. Sedangkan variasi gerakan continous yang diberikan berupa gerakan bolak-balik satu kali dan gerakan bolak-balik yang berulang. Informasi yang dianalisa berupa nilai steady state error, settling time, dan overshoot, yang digunakan untuk menentukan performa sistem yang telah dibuat. Hasil penelitian menunjukkan bahwa sistem Kendali NCTF berbasis Arduino Uno pada Gerak Putar Eksentris Continous Satu Massa Horisontal, mampu menunjukkan performa yang cukup baik. Keakuratan penunjukan posisi dapat dilihat dari kecilnya rata-rata error. Nilai rata-rata error yang terjadi sebesar 3.85 derajat. Kecepatan respon yang baik dapat dilihat dari kemampuan sistem untuk menyesuaikan perintah posisi secara visual dari grafik gerakan yang dihasilkan saja. Hal ini terjadi karena nilai settling time dan overshoot tidak bisa terukur, akibat dari perintah gerak continous yang selalu berubah tiap sampling time 0,01 detik. Sistem mampu robust untuk mengatasi faktor pengganggu dari luar seperti grafitasi, gesekan, inersia, dan beban untuk mekanisme putar eksentris satu massa horisontal.

Optimization of Vacuum Forming Parameter Settings to Minimize Burning Defect on Strawberry Packaging Products Using the Taguchi Method Th. Adi Nugroho; Adhi Setya Hutama; Perwita Kurniawan
International Journal of Applied Sciences and Smart Technologies Volume 04, Issue 02, December 2022
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v4i2.5281

Packaging products are being developed by PT. ATMI IGI – Center. The process of making these products uses the Vacuum forming method. The packaging product is made of PP (Polypropylene) and is used to pack strawberries. There are several problems during the production process, one of which is that there are still product defects burning or often called burn marks. These problems are caused by the machining parameters that have not been standardized, and based on trial eror or experience of the operator. The vacuum forming machine used in this production is the Formech 508FS Vacuum Forming machine. The optimized parameters are heat zone, heat time, and stand by temperature. Optimizing these parameters using the Taguchi method, with an orthogonal array with 9 trials, and the selected signal to noise ratio (SNR) is smaller is better. The response of this research is the reduction of burn mark product defects. The results showed that to reduce burn mark product defects, is to set the parameter heat zone 1 by 90%, heating zone 2 is 80%, heating time 45s, and stand by temperature 60%. Based on this arrangement, the product defects obtained only reached 13%. PT. ATMI IGI-Center is expected to be able to use these parameter settings for the strawberry packaging production process.

Metode Taguchi - PCR TOPSIS untuk Optimasi Energi dan Kecepatan Grafir Mesin Laser Adi Nugroho; Adhi Setya Hutama
Politeknosains Vol 18 No 1 (2019): Jurnal Politeknosains Volume 18 Nomor 1 - Maret 2019
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (314.168 KB)

Along with technological developments and easy access to insight into creative entrepreneurship, many people are competing to create creative products, one of which is by utilizing laser technology. Laser cutting and engraving is used for the manufacture of engraving products in acrylic, wood, glass, leather etc. The uniqueness of the results of laser engraving is uniform surface roughness and detailed product contours. The main challenge of the laser engraving process is the process of setting parameters that take a long time to get the desired surface roughness. The old process certainly results in high energy consumption which affects the cost of the process. In this study the Taguchi method combined with PCR-TOPSIS was used to optimize the engraving process parameters. The parameters measured are scan speed, nozzle distance to the sample surface, and the percentage of energy for the engraving process. The response parameters consist of the level of surface roughness, processing time, and energy consumption used. The results of the optimization test obtained the engraving speed is 200 mm/s, the percentage of energy released by the laser engrave machine was 10 % and the nozzle distance was 10 mm.

PERANCANGAN DAN ANALISIS DESAIN ROTARY TABLE MESIN PUNCH HOSTI PT. ATMI SOLO DENGAN SISTEM PIRING PEMBAGI Andrian, Yohanes Oscar; Narsetya, Laurensius Abed; Nugraha, Aditya; Nugroho, TH Adi
JURNAL KAJIAN TEKNIK MESIN Vol 8, No 2 (2023): Jurnal Kajian Teknik Mesin
Publisher : Universitas 17 Agustus 1945 Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52447/jktm.v8i2.6777

AbstrakMesin adalah salah satu faktor utama penunjang keberhasilan produksi. Mesin punch hosti adalah salah satu dari mesin untuk tujuan khusus yang digunakan untuk memotong lembaran hosti menjadi beberapa ukuran tertentu. Penelitian ini menyampaikan proses perancangan rotary table mesin punch hosti dengan sistem piring pembagi. Metode penelitian yang digunakan adalah dengan pendekatan studi literatur metode VDI 2222. Rotary table dirancang dengan memperhatikan sistem piring pembagi dan menyesuaikan mesin punch hosti yang telah ada. Kegiatan penelitian melakukan analisis terhadap sistem mekanisme kerja dan konstruksi roda gigi. Sisa limbah hasil pemotongan hosti menggunakan rotary table dengan sistem piring pembagi adalah 41,7% dimana angka presentase tersebut lebih kecil dari 50%. Dengan penambahan alat bantu berupa rotary table dengan sistem piring pembagi dengan biaya tidak lebih dari 30% dari harga mesin punch hosti, mampu memotong hosti secara konsisten.Kata Kunci: Mesin Punch Hosti, Rotary Table, Piring Pembagi, VDI 2222.AbstractThe machine is one of the main factors supporting the success of production. The host punch machine is one of the special purpose machines used to cut the host sheets into certain sizes. This study describes the process of designing a rotary table host punch machine with a dividing plate system. The research method used was a literature study approach using the VDI 2222 method. The rotary table was designed by taking into account the dividing plate system and adjusting existing host punch machines. The research activity carried out an analysis of the working mechanism system and gear construction. The remaining waste from cutting hosts using a rotary table with a dividing plate system is 41.7%, where the percentage is less than 50%. With the addition of tools in the form of a rotary table with a dividing plate system at a cost of not more than 30% of the price of a host punch machine, it is able to cut hosts consistently.Keywords: Host Punch Machine, Rotary Table, Divider Plate, VDI 2222.

Analisis Proses Laser Cutting dengan Variasi Cutting Speed, Jarak Focusline, dan Gas Pressure Terhadap Kekerasan dan Kekasaran Material MS SPHC Nugraha, Aditya; Pradana, Ilham Wahyu; Nugroho, Yohanes; Nugroho, Adi
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 2 (2023): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i2.19459

Laser cutting merupakan teknologi pemotongan sheet metal menggunakan media laser yang dipadukan sistem CNC. Permasalahan proses laser cutting yaitu kecacatan permukaan hasil pemotongan dan peningkatan kekerasan material pada area permukaan hasil pemotongan laser cutting, disebabkan oleh ketidaksesuaian variasi parameter. Parameter laser cutting dalam penelitian ini yaitu cutting speed, jarak focusline, dan gas pressure. Variasi parameter cutting speed yang diteliti adalah 1440 m/min, 1620 m/min, dan 1800 m/min. Variasi jarak focusline yang diteliti yaitu 5,5 mm, 6,0 mm, dan 6,5 mm. Variasi parameter gas pressure yang digunakan yaitu 0,5 bar, 0,7 bar, dan 0,9 bar. Metode Taguchi digunakan untuk mendapatkan variasi dengan nilai kekerasan dan kekasaran permukaan material yang minimum. Kekasaran permukaan diuji menggunakan surface roughness tester, kekerasan permukaan diuji menggunakan hardness tester brinel. Besarnya pengaruh setiap parameter di analisis menggunakan metode ANOVA. Hasil penelitian menunjukkan parameter jarak focusline memiliki pengaruh terbesar terhadap kekasaran permukaan dengan persentase 50,385 %, parameter gas pressure adalah parameter yang paling berpengaruh terhadap kekerasan permukaan dengan persentase 54,241 %. Nilai kekasaran minimum dapat dicapai dengan parameter cutting speed 1800 m/min, focusline 5,5 mm, dan gas pressure 0,5 bar. Nilai kekerasan minimum dicapai dengan cutting speed 1800 m/min, focusline 6,5 mm, dan gas pressure 0,5 bar.

Co-Authors Adhi Setya Hutama ADITYA NUGRAHA Aditya Nugraha Anggariawan, Arista Antonius Fajar Bisma Budiantoro, Cahyo Budiyantoro, Cahyo Narsetya, Laurensius Abed Nugroho, Yohanes Perwita Kurniawan Pradana, Ilham Wahyu Rinanto, Andhy Rusmana, Gregorius Bian Sartoyo, Millenino Bergas Sosiati, Harini Subkhan Nur Ikhsan Totok Suwanda Yohanes Oscar Andrian

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