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JMPM (Jurnal Material dan Proses Manufaktur)
Published by Universitas Muhammadiyah Yogyakarta
ISSN : 25803271     EISSN : 26565897     DOI : 10.18196/jmpm
Core Subject : Engineering,
Engineering Mechanical Engineering
Jurnal Material DAN Proses Manufaktur focuses on the research and research review in the field of engineering material and manufacturing processes. The journal covers various themes namely Design Engineering, Process Optimization, Process Problem Solving, Manufacturing Methods, Process Automation, Material research and investigation, Advanced Materials, Nanomaterials, Mechanical solid and fluid, Energy Harvesting and Renewable Energy.
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Articles 16 Documents
 1   2 
Search results for , issue "Vol 2, No 2 (2018): Desember" : 16 Documents clear
Unjuk Kerja Motor Bensin Berbahan Bakar Campuran Pertalite dan Pyrolytic Oil dari Pirolisis Kantong Plastik Berkatalis CaO Novi Caroko; Fiqih Anas Mubaroq; Tito Hadji Agung Santoso; Thoharudin Thoharudin
JMPM (Jurnal Material dan Proses Manufaktur) Vol 2, No 2 (2018): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.2228

Abstract

AbstrakPenelitian ini bertujuan menguji secara eksperimental pengaruh penggunaan campuran minyak pirolisis dan pertalite pada torsi, tenaga, dan konsumsi bahan bakar motor bensin Honda Beat 110cc. Minyak pirolisis dicampur dengan pertalite dengan persentase volume minyak pirolisis: 0%, 5%, 10%, 20%, dan 30%. Metode yang digunakan dalam penelitian ini adalah menggunakan dynotest tool kit dan fuel consumtion test. Parameter yang diukur adalah nilai torsi, daya, dan konsumsi bahan bakar. Hasil penelitian menunjukkan bahwa pertalite murni menghasilkan torsi dan daya tertinggi dibandingkan dengan variasi campuran pertalite dengan minyak pirolisis lainnya. Hal ini dimungkinkan karena nilai viskositas pertalite lebih rendah dibandingkan dengan variasi lainnya. Konsumsi bahan bakar terendah terdapat pada variasi 70% volume pertalite dan 30% volume minyak pirolisis yang menghasilkan konsumsi bahan bakar sebesar 41,66 km/I.AbstractThis study aims to experimentally test the effect of using a mixture of pyrolysis oil and Pertalite on torque, power and fuel consumption of the 110cc Honda Beat gasoline motor. Pyrolysis oil is mixed with pertalite with the percentage volume of pyrolysis oil: 0%, 5%, 10%, 20%, and 30%. The method used in this study is to use the dynotest tool kit and fuel consumption test. The parameters measured are the value of torque, power and fuel consumption. The results showed that pure pertalite produced the highest torque and power compared to variations of the pertalite mixture with other pyrolysis oils. This is possible because the pertalite viscosity value is lower compared to other variations. The lowest fuel consumption is found in 70% volume of pertalite and 30% volume of pyrolysis oil which results in fuel consumption of 41.66 km / I.
Analisis Hemming Sheet Metal dengan Variasi Jenis dan Ketebalan Material Armunanto, Vinsentius Bram; Chrissandi, Erico S; Yosef, Herman; Hernanto, Krisna G; Herdhianto, Pujosakti; Deta, Yesaya Alfa
JMPM (Jurnal Material dan Proses Manufaktur) Vol 2, No 2 (2018): DESEMBER 2018
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.2230

Abstract

The development of manufacturing industry is more rapidly, as a proof is the effeciency and speed of machining process of product manufacture. A machining process covers cutting, forming, coating, heat treatment, and casting. The bending process is included in the forming process, especially for steel plate material. The bending process uses bending tools either manual or automatic process using the program. Selection of suitable plate material will produce the optimal product, which is product free of scratch, crack or defect.The cause of bending failure can occur because the bending process parameters (bending force, methods, thickness and plate type) are not appropriate. Bending methods include v blending, u blending, r blending and hemming. Research and testing are needed to discover, analyze, and prove failure in hemming process. The result is expected to be supporting data related to product design in Work Fabrication (WF) at PT ATMI Solo.  
Perancangan dan Analisis Kekuatan Frame Sepeda Lipat Menggunakan Autodesk Inventor Kamiel, Berli Paripurna; Nugraha, Ghozi Adib; Sunardi, Sunardi
JMPM (Jurnal Material dan Proses Manufaktur) Vol 2, No 2 (2018): DESEMBER 2018
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.2229

Abstract

AbstrakKemacetan lalulintas adalah masalah yang banyak terjadi di kota-kota besar.  Salah satu cara mengatasinya adalah dengan menggunakan transportasi umum. Meskipun demikian, lokasi halte pemberhentian kadang terlalu jauh dari pusat aktivitas masyarakat jika ditembuh dengan berjalan kaki. Hal ini menyebabkan banyak orang tidak tertarik menggunakan transportasi umum.  Untuk mengatasi masalah ini, dibutuhkan alat transportasi individu yang dapat mempermudah mencapai lokasi halte dengan cepat dan aman sehingga penggunaan transportasi umum menjadi menyenangkan. Tujuan perancangan adalah menghasilkan perancangan sepeda lipat yang lebih efisien dari segi ukuran, bobot, dan harga beli dibandingkan sepeda lipat yang sudah ada di pasar. Perancangan dilakukan dengan menggunakan Autodesk Inventor Professional dan dititikberatkan pada frame sepeda. Untuk menjamin kekuatan dan keamanan ketika digunakan, kekuatan frame dihitung dan dianalisis menggunakan metode elemen hingga. Material frame yang dipilih dari hasil perancangan adalah alumunium 6061-T6. Perancangan menghasilkan sepeda lipat dengan dimensi kondisi terlipat adalah 765 x 742 x 328 mm. Analisis kekuatan frame memberikan tegangan von mises maksimum sebesar 96,32 MPa, displacement maksimum sebesar 6,925 mm, dan faktor keamanan minimum sebesar 2,8. Angka-angka hasil analisis kekuatan tersebut adalah angka tertinggi dari keseluruhan angka hasil perhitungan. Hal ini disebabkan oleh konsentrasi tegangan pada frame yang mengalami diskontinuitas geometri. Meskipun demikian, semua angka tersebut masih berada pada interval yang aman ditinjau dari tegangan ijin rencana. AbstractTraffic congestion is one of many problems that occur in big cities. One of the solution to reduce it is by starting to use the public transport, such as bus and train. But, to reach the public transport, some walk is needed and sometimes the distance is too far to go on foot. Other than that, it’s often that the public tranport doesn’t drop passanger right on the destination, so there will be another walk needed. For that reason, many people don’t like to use the public transport. To solve this problem, there should be an individual transportation device that can make commuting using the public transportation mode become less tiring. This design process aims to result a folding bicycle design which is more efficient in size, weight, and cost compared to the exsisting folding bicycles on the market. The design was made using Autodesk Inventor Professional 2015  software. The design was focused on the bicycle frame. To acknowledge the design safety, strength analysis was conducted on Autodesk Inventor Professional 2015 software using the finite element metode. The choosen material for the design was Aluminium 6061-T6.The design process resulted a folding bicycle design with a folded dimention of 765x742x328 mm. From the strength analysis conducted, the design experienced maximum von mises stress of 96,32 MPa, maximum displacement of 6,925 mm, and had minimum safety factor of 2,8. These values were the worst results from the entire design’s analysis results and only happened in one area. It happened because there was an acumulated stress on some part caused by geometry discontinuity. Even so, the value of the safety factor on this area was still far from the design’s allowed stress. In conclusion, the design was safe to use.
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 : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.2223

Abstract

 Laser 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).
Pengaruh Feed Rate dan Kecepatan Putar Pin Tool Friction Stir Welding (FSW) terhadap Kekuatan Tarik dan Kekerasan Aluminium 5052 Muhammad Budi Nur Rahman; Aris Widyo Nugroho; Bayu Satriya Wardhana
JMPM (Jurnal Material dan Proses Manufaktur) Vol 2, No 2 (2018): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.2224

Abstract

AbstrakFriction Stir Welding (FSW) adalah proses pengelasan yang memanfaatkan alat bundar yang menimpa dua potong pelat yang akan disambung. Hasil pengelasan dipengaruhi oleh input panas yang dihasilkan antara alat pin dan bahan las. Tujuan dari penelitian ini adalah mengetahui pengaruh laju umpan dan rotasi alat pin FSW terhadap sifat mekanik Aluminium 5052. Lembaran logam dihubungkan dengan metode FSW dengan variasi laju umpan 20, 60, 120 , 180 mm/menit dan rotasi pin tool 1500, 2500, 360 rpm menggunakan holder cylinder tool pin dengan panjang 22mm dan 4mm. Pengujian mekanis yang dilakukan adalah uji tarik, uji kekerasan Vickers mikro dan pengamatan struktur mikro menggunakan mikroskop optik dan SEM. Hasil penelitian menunjukkan bahwa semakin cepat laju umpan, kekuatan tarik semakin rendah, tetapi regangan tarik meningkat. Pada laju umpan 600 mm/menit, kekuatan tarik diperoleh 187 MPa dengan regangan 12,4% dan laju umpan 180 mm/menit kuat tarik 103 MPa dengan regangan 3,17%. Rotasi lebih cepat dari alat pin, kekuatan tarik meningkat, koneksi solid dan menyatu, dan pada 1500 rpm kekuatan tarik dari 112 MPa menjadi 207 MPa pada 3600 rpm. Semakin besar laju umpan dan rotasi alat pin, nilai kekerasan meningkat di mana tingkat umpan 20 mm/menit kekerasan 44,8 VHN menjadi 86,4 VHN pada laju umpan 120 mm/menit, sedangkan alat putaran pin 1500 Kekerasan rpm 51,3 VHN menjadi 69,6 VHN pada 3.600 rpm. AbstractFriction Stir Welding (FSW) is a welding process that utilizes a round tool that impinges on the two pieces of pelates that will be spliced. Welding results are influenced by heat input which is generated between the pin tool with the material of the weld. The purpose of the research was to determine the influence of feed rate and rotation of the pin tool of the FSW on mechanical properties of Aluminum 5052. Metal Sheet connected with the method of the FSW with the variation of the feed rate 20, 60, 120, 180 mm/minute and rotation of the pin tool 1500, 2500, 360 rpm using the holder cylinder 22mm long pin tool 4mm. Mechanical testing carried out are tensile test, hardness test micro Vickers and microstructure observation using optical microscope and SEM. The results showed that the faster the feed rate then the tensile strength more low however, the tensile strain increased. At feed rate of 600 mm/minute tensile strength obtained 187 MPa with a strain of 12.4% and a feed rate of 180 mm/minute tensile strength of 103 MPa with a strain of 3.17%. The Faster rotation of the pin tool, the tensile strength increases, the connection is solid and fused, where at 1500 rpm tensile strength of 112 MPa to 207 MPa at 3600 rpm. The greater the feed rate and rotation of the pin tool then the value of hardness is increasing where the feed rate of 20 mm/minute hardness by 44.8 VHN to 86.4 VHN at a feed rate of 120 mm/minute, while the round pin tool 1500 rpm hardness of 51.3 VHN become 69,6 VHN at 3600 rpm
Analisa Struktur Morfologi Pellet Semikonduktor ZnO terhadap Variasi Beban Kompaksi Yudit Cahyantoro NS; Agus Kurniawan; Bayu Prabandono
JMPM (Jurnal Material dan Proses Manufaktur) Vol 2, No 2 (2018): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.2226

Abstract

AbstrakSalah satu proses yang penting dalam pembuatan bahan berbentuk pellet adalah proses kompaksi. Penelitian ini mempelajari struktur morfologi bahan semikonduktor ZnO yang dikompaksi dengan tekanan berbeda. Bahan awal adalah ZnO murni yang digiling dengan agate mortar, disaring dan dipadatkan dengan tekanan 10 bar, 20 bar dan 30 bar sehingga berbentuk pelet. Ukuran pelet adalah Ø 13 x 2 mm. Selanjutnya, pelet ini disinter pada temperatur 1300oC dan kemudian diuji dengan menggunakan scanning microscope electron (SEM). Hasil pengujian menunjukkan bahwa struktur morfologi partikel material semikonduktor ZnO yang dikompaksi dengan tekanan 30 bar memiliki struktur morfologi yang tidak beraturan dan tidak terlihat batas butirnya. Ketika material tersebut dikompaksi,  ruang antar butir menjadi sangat kecil dan tidak mampu menampung pembesaran partikel akibat proses sintering sehingga kelihatan menyatu dan menjadi keras. Oleh karena itu, semakin besar tekanan kompaksi maka struktur morfologi dari suatu partikel menjadi lebih padat dan menyatu. Namun demikian, besarnya tekanan kompaksi harus diperhatikan dengan mempertimbangkan kemampuan gaya tekan dari cetakan yang digunakan. AbstractOne important process in manufacturing pellet material is a compaction. This research will study the morphological structure of ZnO semiconductor material that is compacted with different pressure. The first material is pure ZnO which was rinded with agate mortar, filtered and compacted with pressure of 10 bar, 20 bar and 30 bar so the pellet form were shaped. The size of pellet was Ø 13 x 2 mm. Furthermore these pellet was sintered at temperature 1300oC and than tested by scanning electron microscope testing (SEM testing). The test results show that the morphological structure of a particle ZnO semiconductor material which was compacted at a pressure of 30 bar had an irregular morphological structure and no visible grain boundaries. When material was compacted, the space between the grains becomes very small and was unable to accommodate the enlargement of particles due to the sintering process so that it appears to fuse and become hard. Therefore, the greater the compacting pressure, the morphological structure of a particle becomes more dense and fuse. However, the magnitude of compacting pressure must be considered by considering the ability of the compressive force of the mold used. 

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