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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 275 Documents
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SIMULASI DESAIN COOLING SYSTEM DAN RUNNER SYSTEM UNTUK OPTIMASI KUALITAS PRODUK TOP CASE Irawan, Fabio Dwi Bagus; Budiyantoro, Cahyo; Thoharudin, Thoharudin
JMPM : Jurnal Material Dan Proses Manufaktur Vol 1, No 2 (2017): DESEMBER 2017
Publisher : JMPM : Jurnal Material Dan Proses Manufaktur

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Penelitian ini bersifat komputerisasi berbasis simulasi menggunakan software Autodesk Moldflow Insight untuk memperediksi dua kegagalan dan untuk mengoptimalkan kualitas produk. Karena minimnya produk plastik pada engine motor, maka penulis melakukan study kasus dari produk sparepart motor yaitu top case. Penelitian diawali dengan 4 percobaan, dalam tahap awal dilakukan perbandingan dari keempat percobaan dengan analisa fill time. Setelah analisa fill time dilakukan perbandingan antara cooling baffle dan cooling cinformal. Kemudian hasil optimal dari perbandingan, dilakukan analisa Taguchi. Menurut desain eksperimen Taguchi mengharuskan pengacakan nilai faktor menggunakan matriks orthogonal L9 (33) sehingga terdapat 9 eksperimen dengan 3 level. Dalam hal ini optimasi parameter yang menggunakan metode taguci terbukti dapat meminimalisir nilai sink mark dan shrinkage. Hasil optimasi dengan metode taguci dapat digunakan untuk menjadi acuan parameter dalam pembuatan produk yang di fabrikasi menggunakan injection molding seperti produk top case.
PERANCANGAN ROLLER SPINNING SEBAGAI MESIN PEMBUAT PANCI DARI PLAT ALUMINIUM Thoharudin, Thoharudin; Caroko, Novi; Wahyudi, Wahyudi; Sembiring, Suzad Miko; Aji, Hanung Yudistira
JMPM : Jurnal Material Dan Proses Manufaktur Vol 1, No 2 (2017): DESEMBER 2017
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Makalah ini menyajikan proses perancangan mesin roller spinning yang digunakan untuk membuat panci dari plat aluminium. Proses perancangan digunakan untuk menentukan dimensi dari komponen penting dari mesin roller spinning dan kebutuhan daya penggeraknya. Proses perancangan melibatkan persamaan-persamaan yang diambil dari beberapa referensi. Hasil dari perancangan ini menampilkan bahwa kebutuhan ukuran baut sambungan flange poros-mandrel minimal berukuran M6 kelas 4.6 berjumlah 8 buah, diameter poros penggerak minimal sebesar 40,54 mm terbuat dari bahan baka AISI 6150. Kebutuhan daya pengerolan bervariasi tergantung dari ketebalan plat dan kecepatan putar motor yang digunakan, semakin tebal plat dan kecepatan motor maka penggunaan daya penggerak semakin besar. Untuk kebutuhan industri mikro disarankan kecepatan putar maksimum sebesar 500 rpm agar kebutuhan daya untuk pengerolan plat tebal 1,5 mm cukup dengan motor listrik berkapasitas 1 HP.
IDENTIFIKASI MECHANICAL PROPERTIES DARI BAHAN DAUR ULANG POLYSTYRENE Nurhadi, Taufik; Budiyantoro, Cahyo; Sosiati, Harini
JMPM : Jurnal Material Dan Proses Manufaktur Vol 1, No 1 (2017): JUNI 2017
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Polystyrene merupakan material yang umum digunakan dalam berbagai bidang, mulai dari kemasan makanan, minuman, hingga bidang otomotif. Karena belum adanya sifat mekanis dari bahan daur ulang polystyrene dipasaran, menyebabkan produsen dan pengguna tidak memiliki referensi atau rujukan tentang sifat mekanis dari bahan daur ulang polystyrene. Sehingga tujuan dari penelitian ini adalah untuk mengetahui sifat mekanis yang diantaranya kuat tarik dan tingkat kekerasan polystyrene murni dan daur ulang. Penelitian ini dilakukan dengan menggunakan tiga langkah, yaitu pembuatan spesimen menggunakan mesin injection molding di laboratorium injeksi plastik Teknik Mesin Gedung G6 lantai dasar Universitas Muhammadiyah Yogyakarta. Pengujian tarik menggunakan alat tensile strain tester dengan ISO 527-2, dan pengujian kekerasannya menggunakan alat hardness tester dengan ASTM D2240 di Balai Besar Kulit, Karet dan Plastik (BBKKP) di jalan Sukonendi, Semaki, Umbulharjo, Yogyakarta. Hasil dari penelitian polystyrene daur ulang ini yaitu tegangan tarik sebesar 324.724 kg/cm2, regangan tarik sebesar 3.089, modulus elastisitas sebesar 77.14 kg/mm2, dan kekerasan sebesar 71.86. Mengacu hasil pengujian dapat disimpulkan bahwa penggunaan polystyrene daur ulang masih layak digunakan sebagai bahan peralatan rumah tangga seperti sendok plastik, piring plastik,dan gelas plastik. Serta hasil pengujian tentang mechanical properties seperti tegangan tarik, regangan tarik, modulus elastisitas dan tingkat kekerasan dari bahan bahan daur ulang polystyrene dapat digunakan sebagai referensi atau rujukan untuk produsen dan pengguna.
KARAKTERISASI SAMBUNGAN SMAW BAJA KARBON RENDAH MENGGUNAKAN 3 JENIS ELEKTRODA Iswanto, Priyo Tri; Mudjijana, Mudjijana; Himarosa, Rela Adi
JMPM : Jurnal Material Dan Proses Manufaktur Vol 1, No 2 (2017): DESEMBER 2017
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Shield Metal Arc Welding (SMAW) merupakan salah satu cara yang biasa digunakan untuk pengelasan baja karbon rendah. Kualitas sambungan las dapat dikarakterisasi dengan pengujian tarik, fatik, kekerasan Vickers, dan strukturmikro. Penelitian ini bertujuan mengkarakterisasi sambungan SMAW baja karbon rendah menggunakan 3 jenis elektroda.Penelitian ini menggunakan baja karbon rendah 0,113 %C berdiameter 19,05 mm, dilas menggunakan elektroda E7018, E7016, dan E 6013. Karakterisasi hasil lasan menggunakan  alat Universal Testing Machine, Vickers hardness test, rotary bending fatigue,  dan optical microscope.Hasil penelitian menunjukkan lasan menggunakan elektroda tipe E7018 menghasilkan kekuatan tarik maksimum, UTS : 453,73 MPa,  nilai kekerasan Vickers, HVN : 148,23 kg/mm2 , sedangkan hasil lasan menggunakan tipe E7016 dan E6013 berturut-turut UTS : 442,11 dan 406,27 MPa, HVN : 142,30 dan 119,63 kg/mm2. Kekuatan sambungan las lebih rendah dari material baja karbon rendah as received yaitu 489,47 MPa. Hasil pengujian fatik berturut-turut mempunyai nilai ketahanan fatik (Se) : 204,18; 198,95; 182,82, dan lebih rendah dari Se baja S10C yaitu 292,59 MPa. Pengamatan strukturmikro logam las untuk 3 tipe elektroda didominasi struktur ferit batas butir (GF) dan perlit.
Pengaruh Penambahan Serbuk Tongkol Jagung pada Pembuatan Biobriket dari Pelepah Pisang dengan Perekat Tetes Tebu Kurniawati, Dini; Januardi, Noor Diansyah; Subekhi, Nur
JMPM : Jurnal Material dan Proses Manufaktur Vol 2, No 1 (2018): JUNI 2018
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Biomass can be used as an alternative fuel such as making biobriquettes. This study aimed to determine the effect of the comparison of mixtures of banana midrib and corn cobs, the effect of molasses used to obtain biobriquettes according to standards, and the results of chemical and physical analysis of its briquettes. The material used in this study were banana midrib and corn cobs which use molasses as an adhesive. The composition variations used were 100: 0 to 10:90. The material was dried to the appropriate moisture content then burned to become charcoal. Those charcoal mixed together according to the composition and were added by 50 grams of molasses. It were pressed and dried. Testing of biobriquette characteristics was carried out by testing moisture content, compressive strength, density, ash content, and calorific value. The result of it was the composition of the material 10:90 with a value of 11.18% moisture content, compressive strength 7,03 kg/cm2, density 0,70 g/cm3, ash content 9,18%, calorific value 4724 kal/g.
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
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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.
Physical and mechanical properties of semi-automatic MIG welding of AA5083H116 materials Mudjijana, Mudjijana
JMPM : Jurnal Material dan Proses Manufaktur Vol 2, No 1 (2018): JUNI 2018
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Metal inert gas (MIG) welding speed can be carried out manually for complicated components and can also be controlled using computer numerical control (CNC). The purpose of the research is to investigate the effect of CNC welding speed on physical and mechanical properties of AA5083H116. AA5083H116 base metal, ER5356 electrodes, welding speeds of 8, 10, 12 mm/s, current of 120 A, voltage of 19 V, filling speed of 27 mm/s, argon gas rate of 15 liter/minute were used. Distortions after welding were measured using dial indicators, thermal cycles was recorded using type-K thermocouple using National instruments NI USB-9162 apparatus connected to a CPU. The physical properties was analyzed using SEM and EDS for only the best mechanical properties, and the mechanical properties were evaluated using Vickers microhardness, and tensile and bending universal testing machine. The results show that at the welding speed of 8 mm/s automatic regulated was the best mechanical properties compare to previous study at the welding speed of 10 mm/s manually regulated. However, SEM images show that there were several micro cracks at its grain, and several magnesium precipitates can be noticed from the EDS analysis.
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
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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.
Karakterisasi Permukaan Pada Aluminium Anodized-Dyed dengan Pewarna Alami Kunyit Muslim, Ahmad; Nugroho, Aris Widyo
JMPM : Jurnal Material dan Proses Manufaktur Vol 2, No 1 (2018): JUNI 2018
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Dyeing on anodizing process can be done with chemical or natural dyes. Indonesia has a variety of useful plants as a natural dye, one of which is turmeric. The purpose of this research is to know the effect of turmeric dye concentration variation on color brightness, macro structure, surface roughness, oxide layer thickness and wear rate on aluminum anodizing result. Aluminum plate with 1.5 mm thick was cut with size of 50 x 30 mm. The plate was performed anodizing process with 2 amperes of current, 12 volt of voltage for 30 minutes. Dyeing was carried out using commercially available turmeric powder. The dyeing process used variations in concentration of 10, 20 and 30 gram per liter of water at temperature of 90-97 ° C for 30 minutes. The coloring results were tested for color brightness by image analysis software, macro structure test and oxide layer thickness using optical microscope and surface roughness test using roughness tester and wear test with Ogoshi method. Test results showed the effect of turmeric concentration variation concentration on color brightness, macro structure, surface roughness and wear rate. The highest color brightness (RGB) is obtained on a variation of turmeric concentration of 10 gram / liter. The surface macro structure showed the existence of homogeneous pores. The most uniform colored staining is obtained on the variation of turmeric concentration of 30 grams / liter. Whilst the highest surface roughness was found on aluminum which had been anodized with variation of turmeric concentration of 30 gram / liter with the value of 1,344 μm, its wear value presents the lowest of 2.07 x 10-10 mm2 / kg. The concentration variation of the dye solution did not affect the thickness of the resulting oxide layer.
Pengembangan Metode Deteksi Cacat Bantalan Berbasis Analisis Envelope pada Prototipe Fan Industri Kamiel, Berli Paripurna; Nuh, Adib Muhammad; Sudarisman, Sudarisman
JMPM : Jurnal Material dan Proses Manufaktur Vol 2, No 1 (2018): JUNI 2018
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 This paper examines the spectrum and envelope spectrum for detection of ball bearing fault using vibration signals taken from a prototype of industrial fan. It presents a procedure to detect fault on the outer and inner race of roller bearing. Three conditions of ball bearing i.e., normal, outer race fault and inner race fault is tested. The artificial fault on the bearing is 2 mm depth and 0,7 mm width. The vibration signals are taken by using an accelerometer mounted on the vertical-radial direction of bearing pillow block. The waveforms are then transformed into spectrum and envelope spectrum. The differences between spectrum and envelope spectrum for both types of faults are analyzed and discussed. The paper explains the effect of amplitude modulation (AM) on the inner race fault to the spectrum and envelope spectrum. The discussion about the ability of spectrum and envelope spectrum for bearing fault detection is presented and compared in detail. The results show that spectrum has good ability for fault detection since it gives clear and high amplitude of bearing fault frequencies. However the spectrum often fails when the size of fault is relatively small, in this case the envelope spectrum gives better results.

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