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ROTOR: JURNAL ILMIAH TEKNIK MESIN
Published by Universitas Jember
ISSN : 1979018x     EISSN : 24600385     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
ROTOR merupakan jurnal yang diterbitkan oleh Jurusan Teknik Mesin Universitas Jember yang memuat artikel ilmiah dalam bidang Konversi Energi, Design/Perancangan, Teknik Produksi, Material serta bidang lain yang terkait dengan Teknik Mesin. Semua naskah yang diterima ROTOR diterbitkan secara global dalam bentuk elektronik. Hasil penelitian yang diterbitkan dalam jurnal ini diharapkan dapat menambah khasanah pengetahuan di bidang Teknik Mesin serta menjadikan sarana bagi para profesional baik dari dunia usaha, pendidikan, ataupun peneliti untuk menyebarluaskan perkembangan ilmu pengetahuan dan teknologi di bidang Teknik Mesin melalui publikasi hasil penelitian.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 14 Documents
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Search results for , issue "Vol 9 No 2 (2016)" : 14 Documents clear
OPTIMASI MULTIRESPON PADA PROSES EDM SINKING BAJA ST 42 DENGAN MENGGUNAKAN METODE TAGUCHI DAN FUZZY LOGIC Galang Sandy Prayogo; Nuraini Lusi; Dian Ridlo Pamuji
ROTOR Vol 9 No 2 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

The optimization technique of machining parameters considering multiple performance characteristics of non conventional machining EDM process using Taguchi method combined with fuzzy logic is presented in this study. ST 42 steel was chosen as material workpiece and graphite as electrode during this experiment. Performance characteristics such as material removal rate and overcut are selected to evaluated the effect of machining parameters. Current, pulse on time, pulse off time and discharging time/ Z down were selected as machining parameters. The experiments was conducted by varying that maching parameters in three different levels. Based on the Taguchi quality design concept, a L27 orthogonal array table was chosen for the experiments. By using the combination of fuzzy logic and Taguchi, the optimization of complicated multiple performance characteristics was transformed into the optimization of a single response performance index. Optimal levels of machining parameters were identified by using fuzzy logic method. The statistical application of analysis of variance was used to determine the relatively significant machining parameters. The result of confirmation test indicted that the determined optimal combination of machining parameters effectively improve the performance characteristics of the machining EDM process on ST 42 steel. Keywords: EDM, Taguchi, Fuzzy logic
PEMANFAATAN LIMBAH PABRIK KELAPA SAWIT SEBAGAI MATERIAL TEKNIK Tarkono Tarkono; Hadi Ali
ROTOR Vol 9 No 2 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Palm oil mill issuesbyproducts in the form of 0.70 tons of cubic meters of fiber, 0.35 tons of cubic meters of shell,and 1.1 tons of cubic meters of oil palm empty fruit bunches palm (EFBP) to yield 1 ton cubic meters of crude palm oil.The fiber content consisted in the EFB is a source of fiber for a variety of industries such as manufacturing of composites, fillers for thermo-plastic, paper-making and sound insulation as well as soil erosion control.Manufacturing of a natural fiber reinforced cement board is an effort to reduce the use of synthetic fibers and asbestos fibers which cause side effects for its users.So this research is one of the breakthroughs to obtain new materials as substituteto asbestos fibers. This research used portland cement, marble powder, CaCO3 and EFBP fiber as reinforcement.EFBP fibers were arranged randomly in the form of short fibers. Percentage of the mixture of 16%, 12% marble powder, and portland cement was varied with a percentage of 50%, 45%, 40%, 35%, 30%, 25%, 20%, 15% and the volume percentage of CaCO3 inverse of the percentage of portland cement. The results showed that the characteristics of fibrous EFBP cementboard in the optimum condition to produce value of tensile strength of 1.96 MPa, flexural strength of 2.61 MPa, compressive strength of 14.35 MPa, density (ρ) of 1519 kg/cm3, water absorption of 24.28 and flame propagation velocity between 54.4 to 61.5 FS.By the standard of JIS A 5417-1992 that the requirements of density in the construction of cement board is of 0.8 g/ cm3, so that the material is appropriate to be applied.Its thermal conductivity lower than fibrous congseted asbestos cement board λ = 0.576 kcal/mhoC, meaning that the cement board is worthy applied as a ceiling of the house. Keywords:EFPB, fiber, cement board, engineering material
PERUBAHAN MASSA DAN NILAI KALOR CHAR DENGAN VARIASI HEATING RATE DAN TEMPERATUR PADA PIROLISIS SERBUK KAYU MAHONI (SWITENIA MACROPHYLLA) Farid Majedi; Widya Wijayanti; Nurkholis Hamidi
ROTOR Vol 9 No 2 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Product pyrolysis process is char, tar and gas. Char important parameters are the mass and caloric value. Therefore, this study discusses the effect of temperature and heating rate due the mass and low heating value. Variations heating rate used was 673 K / h and 1073 K / h.Temperature heatingis varied 523 K, 623 K, 723 K, 773 K and 873 K for each heating rate .The heating temperature is provide by eletric heater with control system (arduino uno system). The measurement is donefor biomass and char mass using measuring cup and measured using mass scale. Bomb calorimeter is used to measure teh low heating value Sawdust mahogany dried powder with temperatures 383-398 K. Sawdust mahogany dry pyrolysis with variations planned. The heating process pyrolysis is taken for 180 minutes using stopwatch.The result show that theheating rate and temperatur has effect due mass char product.The results show that char mass tend to decrease due to heating rate and temperature increasing.. Low heating value tend to increase due to heating rate and temperature increasing. Keywords: Pyrolysis, sawdust mahogany, heating rate, temperature, mass,low heating value
PRODUKSI BIODIESEL DARI MINYAK JELANTAH MENGGUNAKAN KATALIS HETEROGEN CANGKANG BEKICOT (ACHATINA FULICA) DENGAN METODE PENCUCIAN DRY WASHING Zainul Arifin; Bayu Rudiyanto; Yuana Susmiati
ROTOR Vol 9 No 2 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Biodiesel is an alternative fuel from renewable sources with the composition of fatty acids from vegetable oils or animal oils. Biodiesel production from used cooking oil was counducted to determine the effect of basa heterogen catalyst of snail shell that used on a transesterification reaction with dry washing method for the yield and quality of biodiesel based on the quality standard of Biodiesel according to SNI No. 04 – 7182-2006. The study was designed using Rancang Acak Lengkap (RAL) with two factors, the concentration of catalyst (K): (6, 7 and 8%) and the concentration of magnesium silicate (M): (1 and 1.5%). The parameters analyzed include biodiesel yield, viscosity, density, acid number, flash point, cloud point , water content and heat value. The results showed that the highest yield of 63% was obtained from treatment of the catalyst concentration 6% and magnesium silicate 1% with the quality of biodiesel: viscosity of 5.692 mm2 / s, density of 867.8 kg / m3, the number of acid 0.605 Mg-KOH/Kg, a flash point of 160 oC, 12 oC cloud point, the water content of 0.08% and a heat value of 41.379 MJ / Kg. Keywords : Biodiesel, Catalyst Heterogenous, Snail Shell, Dry Washing

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