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All Journal Jurnal Teknologi Dan Industri Pangan Jurnal Energi Dan Manufaktur Rekayasa Mesin ROTOR: JURNAL ILMIAH TEKNIK MESIN INVOTEK: Jurnal Inovasi Vokasional dan Teknologi STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin ComTech: Computer, Mathematics and Engineering Applications Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Abdi Dosen : Jurnal Pengabdian Pada Masyarakat JURMA : Jurnal Program Mahasiswa Kreatif Journal of Mechanical Engineering, Science, and Innovation JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI Journal of Earth Energy Science, Engineering, and Technology Prosiding SEMNAS INOTEK (Seminar Nasional Inovasi Teknologi) Jurnal Polimesin J-Proteksion : Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin
Hari Arbiantara Basuki
Mechanical Engineering Department, Faculty Of Engineering, Jember University, Indonesia
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Transportation

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OPTIMASI DESAIN MOLD UNTUK MEREDUKSI CACAT FLASH DAN SHRINKAGE PADA PRODUK PAKU KOTAK DENGAN MENGGUNAKAN SOFTWARE SIMULASI MOLDFLOW (STUDI KASUS PADA PT. PRIMA SAKTI) Ayu W., Erfina; Arbiantara, Hari
ROTOR Vol 8, No 1 (2015)
Publisher : ROTOR

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Abstract

Use of plastic is rapidly increasing, but in injection molding products common product defects, such cracks, shrinkage, unperfect shape, overtopping plastic material, dimensions of product outside specified tolerance and  forth are caused by several factors. The most important factors are mold design. PT. Prima Sakti is injection molding company that produced products rectangle nail that has defects, especially flash and shrinkage, which would harm company. In this study, the authors make analysis to reduce defects in trectangle nail by polypropylene using moldflow simulation software, by varying placement of  gate and diameter of  cooling in mold. The aims are obtaining parameter settings of cylinder temperature, injection pressure, eficient and optimum cooling for rectangle nail, and also obtaining mold that produce  smallest percentage of defect. The test is conducted by varying temperature cylinder 230˚C, 240˚C, 241,1˚C, and 250˚C, and varying injection pressure of 60 MPa, 69.134 MPa, 98.56 MPa and 128 MPa, which aims to determine ratio of shrinkage and fill time. Result that obtained in this study that for rectangle nail product, the best output obtained in design 2 simulation with cylinder temperature 230˚C, injection pressure 60 Mpa and 98,56 Mpa, that obtain shrinkage ratio 15,68% with fill time 0,38 second.
Analisis Kekuatan Tarik dan Kekasaran Kawat Tembaga Hasil Drawing akibat Variasi Persentase Reduksi Firman, Mohammad; Darsin, Mahros; Arbiantara, Hari
ROTOR Vol 6, No 1 (2013)
Publisher : ROTOR

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Abstract

Wire drawing is cold working process to reduce the cross-sectional area. The value of reduction is different in every process, depend on the needs and working parameters. The degree of reduction causes differences of copper wire rod in the characteristics and quality, such as its tensile strength and roughness. The purpose of this research is to determine the influence degree of reduction to the tensile strength and roughness of copper wire. The research method is comparing the tensile strength and roughness of copper wires control with drawed copper wires, without repetition stage. The speciments used in this research are pure copper rods (99.9%) with 3.1 mm, 3.2 mm and 3.25 mm in diameter and 2.8 mm of die output, so will get the degree of reductions are 19%, 23% and 26%. The results of this research was the wire drawing process increase the tensile strength of copper rods from 86.87 MPa to 100.74 MPa on 19% reduction. On 23% reduction the tensile strength increase from 82.24 MPa to 105.62 MPa. The greatest increase of tensile strength was result by 26% reduction, it was from 86.87 MPa to 115.36 MPa With the more of degree of reduction on the drawing process led the increase of tensile strength will be greater. This research also obtained the result that the wire drawing process result the decrease roughness of copper rods from 0,144 μm to 0,089 μm on 19% reduction, from 0.146 μm to 0.087 μm on 23% reduction and the copper rod roughness decrease from 0.159 μm to 0.083 μm on 26% reduction. The increase of degree of reduction produce insignificantly result of surface roughness changing. Keywords: Roughness, Tensile Strength, Wire Drawing, Reduction, Copper
PENGARUH PROSES PENGADUKAN TERHADAP KARAKTER ADONAN DAN SIFAT BIODEGRADABLE PLASTIC YANG DIBUAT DARI BUNGKIL BIJI JARAK PAGAR Arbiantara, Hari; Darsin, Mahros; Lindriati, Triana
ROTOR Vol 6, No 1 (2013)
Publisher : ROTOR

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Abstract

Manufacture of biodegradable plastics in this study begins with making the dough using a single screw extruder, then the dough is molded by using a compression molding machine. The basic material used is a mixture of jatropha seed meal, corn starch, CMC (composition 7: 2: 1). This study aimed to study the effect of Helic corner and screw compression ratio of the batter character and biodegradable plastic produced. Helic screw angle was varied from 2,5o; 5o; 7.5 ° and screw compression ratio varied from 1.5; 2.5; 3.5. The results showed an increase in the angle of screw Helic simplify the process of molding (lowering the value of Tg, Tm, ΔH and texture of the dough) and to improve the mechanical physical properties of the biodegradable plastic produced (tensile strength, strain increases while the thickness and Water Vapor transmition rate decreases). Improved compression ratio increase and decrease the thermal properties of dough texture and increase the tensile strength and strain, decrease the thickness and Water Vapor transmition rate of biodegradable plastic produced. Keyword: biodegradable plastic, mold, helical degree, compression ratio
Analisis Kekuatan Tarik dan Tekan Cetakan Pasir akibat Variasi Ukuran Butir dan Kadar Pengikat Pasir Cetak Devianty, Sella; Syuhri, Ahmad; Arbiantara, Hari
ROTOR Vol 7, No 2 (2014)
Publisher : ROTOR

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Abstract

Molding sand is one the most important thing in sand casting. The weak tensile strength and compressive strength of molding sand causes some defects, such as sand drop and sand inclusion. Therefore this research is done by varying grain size and percentage of binder in molding sand. The purpose of this research was to analyze the tensile strength and the compressive strength of sand mold due to variation of grain size and binder presentation. Each treatment will through tensile strength test and compressive strength test, then the data from the test will be analyzed by using ANOVAfor factorial experiments with SPSS 16.0 and a significance level of 5%. From the research and analysis conducted found that the tensile strength of the molding sand is influenced by the grain size and binder presentation, meanwhile the compressive strength is influenced by the binder presentation but is not affected by the grain size. The highest average value of the sand mold tensile strength is 0.912 N/mm2 and the highest average value of the sand mold compressive strength is 2.7567 N/mm2. Those values are achieved by the use of a mixture of GFN 40-50 AFS silica with a percentage binder as much as 1.5%. Keywords: Molding sand, grain size, binder
PENGARUH SUHU DAN WAKTU TERHADAP KEKUATAN TARIK DENGAN PENGUJIAN TERMAL MEKANIS PADA BELT CONVEYOR 2 PLY Muhammad, Muslih; Arbiantara, Hari; Adib Rosyadi, Ahmad
ROTOR Vol 8, No 2 (2015)
Publisher : ROTOR

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Abstract

Belt is a major component that directly contact with the material and also it is a component that can be worn out in a conveyor system. Along with its production capacity and lack of conveyor belt proper maintenance, a conveyor belt will experience a variety of obstacles or problems. The problem that often occurs is the torning belt. To overcome the problems, belt splicing is necessary to do. Hot splicing method is one method that can help connecting the belt. Hot splicing method utilizing heat, time and pressure to connect the belt. The purpose of this study is to determine the influence of temperature and timing of belt splicing against tensile strength with thermal mechanical testing. The method used in this study is the experimental method, a method used to test the effect of a treatment on the object under study. Experiments carried out at a temperature variation of grafting ( 130 ºC, 145 ºC and 160 ºC) and the variation of the connection time for 20 minutes , 30 minutes and 40 minutes . The results Showed the highest strength values of 5:14 MPa at a temperature of 130 ºC splicing and connecting time of 40 minutes. Keywords: Belt Conveyor, Splicing Temperature and Splicing Time.
Pengaruh Tekanan Udara (Inflation Pressure) pada Ban Tipe Radial Ply terhadap Rolling Resistance Kristianta, F.X.; Arbiantara, Hari
ROTOR Vol 8, No 2 (2015)
Publisher : ROTOR

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Abstract

Salah satu faktor yang berperan penting pada efisiensi bahan bakar pada kendaraan adalah rolling resistance. Rolling Resistance adalah tahanan terhadap roda yang akan dan telah menggelinding akibat adanya gaya gesekan antara roda dengan permukaan jalannya roda. Ban radial umumnya mempunyai aspek ratio yaitu perbandingan tinggi dan lebar lebih kecil dari ban bias.Ban radial adalah ban yang paling banyak dipakai pada kendaraan penumpang untuk saat ini. Pada penelitian ini akan melakukan analisa tentang pengaruh tekanan udara pada ban tipe radial ply terhadap rolling resistance. Pada penelitian ini digunakan alat standar pengukuran rolling resistance yang ditetapkan oleh International Organization for Standardization (ISO), yaitu ISO 18164: 2005. Tujuan penelitian ini mengetahui pengaruh tekanan udara (inflation preassure) terhadap rolling resistance pada ban tipe radial ply pada kecepatan 36,7 km/jam. Penelitian ini tekanan udara yang diberikan bervariasi mulai dari 100 kPa, 150 kPa, 200 kPa, 250 kPa, dan 300 kPa dengan pembebanan radial 1kN. Nilai rolling resistance diukur menggunakan alat uji rolling resistance dan untuk mengetahui kecepatan putar menggunakan tachometer. Nilai rata – rata rolling resistance dan lebar tapak terkecil terdapat pada tekanan udara 300 kPa dengan nilai 9,36 N dan 39 mm. Nilai rata – rata rolling resistance dan lebar tapak terbesar terdapat pada tekanan 100 kPa dengan nilai 19,97 N dan 51,5 mm. Tekanan udara (inflation preassure) dapat meningkatkan dan menurunkan nilai rolling resistance, dikarenakan luasan kontak ban terhadap permukaan jalan yang berubah seiring dengan perubahan tekanan udara (inflation preassure) yang diberikan . Keywords: Tekanan udara, rolling resistance, ban radial ply
Analisis Penyerapan Energi Kinetik pada Berbagai Variasi Kecepatan dan Inersia Flywheel Faizun, Muhammad Muhtada; Basuki, Hari Arbiantara; Mulyadi, Santoso
Jurnal Rekayasa Mesin Vol 5, No 3 (2014)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

Kinetyc Energy Recovery system (KERS) is a mechanism of non convensional breaking system to absorb and recovery kynetic energy from breaking desseleration by the vehycle asstep of increasing vehichleeficiency. At this moment Kinetyc Energy Recovery system (KERS) are applycated on high speed vehicle, hybrid vehicle, and heavy duty vehicle, usually F1 race car, FerraryEnzo sport car, Flybus and modern truck. The absorbtion of kynetic energy use flywheel. Kynetic energy is effected by flywheel inertia and duration. The purpose of this research is to know absorbtion of kynetic energy from flywheel with 2 various of inertia from KERS type mechanism and wheel velocity various between 800rpm until 1800rpm. This research was done at Design Laboratory of Mechanical Direction Engineering Faculty of Jember University. Conclusion from the research is the biggest absorbtion energy in flywheel from various inertia 0,0317kg.m 2 at 1800rpm are 23.210,72 Joule.Keywords: Kinetyc Energy Recovery system (KERS), flywheel, Inersia, kynetic energy, absorbed energy
PENGEMBANGAN PROSES COMPRESSION MOLDING DALAM PEMBUATAN EDIBLE FILM DARI TEPUNG KORO PEDANG (Canavalia ensiformis L.) [Development of Compression Molding Process for Edible Films Production from Canavalia ensiformis (L.) Flour] Triana - Lindriati; Hari - Arbiantara
Jurnal Teknologi dan Industri Pangan Vol. 22 No. 1 (2011): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

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Abstract

Edible Films based on Canavalia Ensiformis flour could be made using compression molding process. This research was to investigate temperature (120oC, 130oC, 140oC) and pressure ( 0.845 Mpa, 1.690 Mpa, 2.540 Mpa) effect on the properties of the film. The compression-molding pressure significantly affected the film’s thickness, lightness, tensile strength, elongation and Water Vapor Transmition Rate (WVTR). Meanwhile molding temperature only affected film’s elongation (P<0.05) over the range of conditions studied. Increase in compaction pressure resulted in decreased thickness, tensile strength, elongation with increase in lightness (L*) and WVTR. Increasing the molding temperature decreased elongation. Flexible, light-yellow edible films could be produced at a processing temperature of 140oC and compaction pressure of 0.845 Mpa. The films thickness was 0.302 mm; lightness (L*) was 68.557, tensile strength was 4.091 Mpa, elongation was 37.547 % and WVTR was 0.001 mg/m2.det.
Karakteristik Biodiesel dari Minyak Biji Randu (Ceiba Pentandra) dengan Proses Transesterifikasi Menggunkan Katalis NaoH Nofal Kharis; Hary Sutjahjono; Hari Arbiantara; Digdo Listyadi Setyawan; Nasrul Ilminnafik
Jurnal Energi Dan Manufaktur Vol 12 No 1 (2019)
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (109.499 KB) | DOI: 10.24843/JEM.2019.v12.i01.p07

Abstract

Indonesia sangat berpotensi untuk produksi bahan bakar biodiesel yang berbahan nabati dengan keunggulan yaitu bisa diperbaharui. Banyak sumber bahan bakar alternatif yang mudah ditemukan di Indonesia untuk dijadikan bahan pembuatan biodiesel salah satunya biji randu. Pembuatan biodiesel dari bahan minyak biji randu yang diperoleh dengan cara biji randu dikeringkan terlebih dahulu kemudian biji dihancurkan dan haluskan menggunakan mesin penggiling, kemudian setelah biji halus hasil dari penggilingan dipress untuk mendapatkan minyaknya. Ektraksi biji kapuk menghasilkan 16-25 % ml minyak biji randu dari berat biji. Proses degumming dengan cara minyak ditimbang kemudian dipanaskan dengan suhu mencapai ±50 °C, Kemudian di tambahkan asam phospat sebanyak 0,1% dari berat minyak randu. Dengan suhu minyak dipertahankan selama 60 menit. Kemudian proses transesterifikasi dilakukan pencampuran larutan pada suhu 50 °C dengan lama pengadukan 90 menit, proses transesterifikasi menggunakan larutan metanol dan NaoH sebebagai katalis untuk menghasilkan metyl ester. Kemudian biodiesel diuji karakteristiknya dari pengujian menghasilkan nilai kalor 8641,473 kal/gram, densitas 8730 g/cm³, viskositas 6.815 cst, flash point 115 °C. Indonesia has the potential for the production of biodiesel fuels made from vegetables with many advantages, which can be renewed. There are many alternative fuel sources that are easily found in Indonesia to make biodiesel as one of the ingredients for seedling. The making of biodiesel from the ingredients of linseed oil obtained by means of litter seeds is dried first then the seeds are crushed and puree using a grinding machine, then after the fine seeds from the mill are pressed to get the oil. Extraction of kapok seeds produces 16-25% ml of seed oil from seed weight. The Degumming process by weighing the oil is then heated with temperatures reaching ± 50 ° C, then phosphate acid is added as much as 0.1% of the weight of the oil. With the oil temperature maintained for 60 minutes. Then the transesterification process was carried out by mixing the solution at 50 ° C with a stirring time of 90 minutes, the transesterification process using methanol and NaoH as a catalyst to produce metyl ester. Then the characteristics of the biodiesel tested from the test produced a heating value of 8641,473 cal / gram, density 8730 g / cm30, viscosity 6,815 cst, flash point 115 ° C.
Analisis Kekuatan Tarik dan Kekasaran Kawat Tembaga Hasil Drawing akibat Variasi Persentase Reduksi Mohammad Firman; Mahros Darsin; Hari Arbiantara
ROTOR Vol 6 No 1 (2013)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (379.218 KB)

Abstract

Wire drawing is cold working process to reduce the cross-sectional area. The value of reduction is different in every process, depend on the needs and working parameters. The degree of reduction causes differences of copper wire rod in the characteristics and quality, such as its tensile strength and roughness. The purpose of this research is to determine the influence degree of reduction to the tensile strength and roughness of copper wire. The research method is comparing the tensile strength and roughness of copper wires control with drawed copper wires, without repetition stage. The speciments used in this research are pure copper rods (99.9%) with 3.1 mm, 3.2 mm and 3.25 mm in diameter and 2.8 mm of die output, so will get the degree of reductions are 19%, 23% and 26%. The results of this research was the wire drawing process increase the tensile strength of copper rods from 86.87 MPa to 100.74 MPa on 19% reduction. On 23% reduction the tensile strength increase from 82.24 MPa to 105.62 MPa. The greatest increase of tensile strength was result by 26% reduction, it was from 86.87 MPa to 115.36 MPa With the more of degree of reduction on the drawing process led the increase of tensile strength will be greater. This research also obtained the result that the wire drawing process result the decrease roughness of copper rods from 0,144 μm to 0,089 μm on 19% reduction, from 0.146 μm to 0.087 μm on 23% reduction and the copper rod roughness decrease from 0.159 μm to 0.083 μm on 26% reduction. The increase of degree of reduction produce insignificantly result of surface roughness changing. Keywords: Roughness, Tensile Strength, Wire Drawing, Reduction, Copper
Co-Authors Agus Triono Ahmad Adib Rosyadi Ahmad Ayyub Syaiful Ahmad Syuhri Andi Sanata Aris Zainul Mutaqien Aris Zainul Muttaqin Danang Yudistiro Danang Yudistito Dani Arief Bahtiar Dani Hari Tunggal Prasetiyo Dedi Dwilaksana Deni Yudas Priawan Dhimas Ilhamsyah Digdo Listyadi, Digdo Dwi Djumhariyanto Dwi Djumhariyanto Efendi , Moh Riski Elhamzah, Denaldy Elza Setya Erfina Ayu W. Erfina Ayu W., Erfina F.X. Kristianta F.X. Kristianta, F.X. Fachruzzaki, Fachruzzaki Faizun, Muhammad Muhtada Faris Ahmad Junaedi Fikril Hilmi Gaguk Jatisukamto Ghaffar, Jakfat Maulid Hafidz Ahmad Abdillah Haidzar Nurdiansyah Hary Sutjahjono Ilminafik, Nasrul Imam Sholahuddin Intan Hardiatama K.W., Robertoes Koekoeh khoirul fahmi aziz Kristianta, Franciscus Xaverius Linda Kurnia Supratiningsih M. Fahrur Rozy Hentihu Mahatma Junjung Mardlotila Mahros Darsin Mochamad Edoward Ramadhan Moh. Nurkoyim Kustanto Mohammad Firman Mohammad Firman, Mohammad Mohammad Hartono Muhamad Zaky Rizqullah Nurrosidi Muhammad Maulana Andi Surya Muhammad Ridho Muslih Muhammad Muslih Muhammad, Muslih Muttaqin Mar'iy Muslih Nasrul Ilminnafik Nofal Kharis Pratama, Aly Wafa R. Koekoeh Koenjtoro Wibowo Rika Dwi Qoryah Rina Lestari Rizal, Ahmad Ayyub Syaiful Robertus Sidartawan Robi Subastian Rossy, Rio Martha Febriana Salmansyah, Dathantara Santoso Mulyadi Sella Devianty Sella Devianty, Sella Sumarji Susanti, Rizqa Putri Syahriza, Mochamad Rifki Thatit Widya A.P Triana Lindriati Trifiananto, Muhammad Yahya, Hafiz Indratma Yudah, Norman Audi Erlangga Pradipta Yuni Hermawan