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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 333 Documents
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Karakteristik Pembakaran Difusi Campuran Biodiesel Minyak Jarak Pagar – Etanol / Metanol Pada Mini Glass Tube Dan Mini Copper Tube Al Banjari, M. Arsad; Yuliati, Lilis
ROTOR Vol 8, No 2 (2015)
Publisher : ROTOR

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Abstract

Diffusion is performed combustion in diesel engines, biodiesel as a biofuel that is used to replace fossil fuels. Many studies have looked at the effects of a mixture of biodiesel fuel ethanol-methanol-diesel with different percentages in terms of engine performance and exhaust emissions, but have never done research on combustion characteristics. This paper discusses how the mix ratio diffusion combustion characteristics of biodiesel - ethanol / methanol on a mini glass tube burner and a mini copper tube burner. the results showed that the use of mini glass tube burner produces more explosions flame than mini copper tube burner. This is because the temperature of the mini copper tube is higher than the temperature of the mini glass tube, and fire explosion occurred because of thecohesionof theglasstubeto thefuel, so that theliquid fueloftenjumpoutofthe burner tipand thenthere was an explosionof fire, and alsocoolingthe fuelvaporwhen passing theminiglasstube. The lower of viscosity and boiling point properties can reduce explosion flame, and making the evaporationfuelmore better. Conclusion, the use ofmini copper tube burner, producesmore stable flamethanmini glass tube burner. and properties of biodiesel-methanol is better than biodiesel-ethanol. Keywords :Biodiesel, diffusion flame, combustion characteristics, mini glass tube burner, mini copper tube burner.
PENGARUH PUTARAN SPINDEL, GERAK MAKAN DAN SUDUT MATA PAHAT TERHADAP GETARAN BENDA KERJA ALUMINIUM 6061 PADA PROSES DRILLING Agung Eko Hadiyoto; Santoso Mulyadi
ROTOR Vol 7 No 2 (2014)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Chatter in drilling process due to excitation, both from within and from outside the system but the resulting chatter effect is very dependent on the excitation frequency and the elements of the cheater system itself . This study aimed to determine the effect of spindle speed, feeding rate and tool angle in consideration of aspects of chatter in drilling process. In this experimental design experiments conducted using Drill Machine Model KMR Kao Ming-700DS. Spindle speed used is 136 rpm, 368 rpm and 681 rpm. Feeding used is 0.07 mm/rotation, 0.13 mm/rotation, 0.22 mm/rotation and use a variety of tool angle is 90˚, 100˚ and 118˚. Materials used for the experiment was aluminium 6061. chatter measurement results work material drilling process using a series of chatter test equipment with a number of fully testing is testing 27. Analysis of the data used is the linear regression. From the results of the testing results of the regression equation A = 103.371* (n)0.627* (f )0.581 * (2Kr)1.112 and R-square value 81.6 %. Spindle speed parameter, feed rate and tool angle jointly effect to the chatter of work material in drilling process. Keywords: Drilling, Chatter, Feeding, Spindle Speed
FABRIKASI DAN PENGUJIAN TARIK PIPA KOMPOSIT BERPENGUAT SERAT WOL DENGAN ADITIF PARTIKEL MONTMORIILLONITE Ibrahim Tri Statistianto; Agus Triono
ROTOR Vol 9 No 1 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Composite is one kind of material created by the merger of two or more kinds of materials that have different properties into one new materials with different properties. Composites are also widely used in the automotive industry. The use of composite particles of montmorillonite (MMT) is expected to contribute to the development of alternative materials made from clay. The purpose of this study was to determine the effect of particle size variation of the value of the tensile strength of the pipe Composite wool fibers with additive MMT particles, determine the effect of particle size variation of the morphology Composite pipe wool fibers with additive MMT particles after the drop test. The method used is the method of filament winding. For the testing standards used for tensile tests using ASTM D 2290. From the test results can be concluded that there are significant variations in particle size (MMT) against the tensile strength values with an average value of 20 = 49.08 MPa mesh, mesh 40 = 63.86 MPa, mesh 60 = 107.21 MPa, 138.78 MPa = 80 mesh, 100 mesh = 167.58 MPa, 120 = 190.05 mesh, mesh 150 = 210.89 MPa.
ANALISIS PENINGKATAN KUALITAS PRODUK Y DENGAN PENDEKATAN METODE SIX SIGMA Dwi Rizky Fitria; Dwi Djumhariyanto
ROTOR Vol 9 No 1 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

To meet the market needs a manufacturing industry is required to continue to improve the quality of production through improvements in the production process. One way that can be used is the analysis of quality improvement with Six Sigma methods. This research aim to reduce the number of defects that can increase the value of sigma production. Based on the analysis results obtained sigma value of its current production of 3.42 with DPMO value 27429. The final result may boost the improvement recommendations sigma value to 3.50 and decrease the number of defects from 54.94 grams to 45.5 grams.
OPTIMALISASI HASIL PROSES WIRE-CUT EDM DENGAN METODE PRINCIPAL COMPONENT ANALYSIS (PCA) Mulyadi Mulyadi; Agus Puji Suryanto
ROTOR Vol 9 No 1 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Some of the desired performance of the machining process Wire-Cut Electric Discharge Machining CV. Catur Prasetya Packindo is rate workmanship short and surface roughness of lower cutting. The problem is how to manage the performance of process variables that can be optimized simultaneously.To perform the optimization process must first be determined the relationship between the performance of the machining process wire cut to variable Interpulse process, Electric current, Wire Speed and Variable Frequency with PCA method.The relationship model is obtained from experiments carried out by the draft Central Composite Design (CCD) .Optimasi response is made with the help of Minitab software 16. The data used in this study are primary data obtained from experimental results. Variable response to be observed include material processing rate (MRR), cutting time, cutting width, surface roughness (Ra), then a constant variable is a variable process that is not examined. These variables are maintained during the experimental process so it does not affect the results.In order to estimate the contribution of the influence of each factor on the response so that the accuracy of the model used can be determined, then used analysis of variance (ANOVA) which is a quantitative calculation techniques. To determine the extent to which the accuracy of the values that are statistically stationary generate value optimal response, then validated against the values stationary.To prove the presence or absence of a deviation between the results of the validation test will be conducted on the calculation of the sample one for setting optimum parameters for a confirmation test. Optimization of the cutting material samples SKD-11 is around 15 mm to produce the shortest time 5 minutes 21 seconds, cutting the narrowest width of 0.481 mm, the minimum surface roughness in Ra of 6.0 μm and maximum MRR was 13,93 . The fourth value is the best setting parameters obtained from the optimization by setting a value Pulse interval of 9, electric current of 10 Wire speed by 5 and variable frequency by 80.
PENGARUH KONSENTRASI EKSTRAK KULIT BUAH MAJA TERHADAP LAJU KOROSI BAJA KARBON A53 DENGAN MEDIA AIR LAUT Iwan Faisal Hidayat; Sumarji Sumarji
ROTOR Vol 9 No 1 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Corrosion is damage or degradation of the metal due to a redox reaction between a metal with a variety of substances in the environment that produce compounds that are not desired. Corrosion is a chemical phenomenon that occurs on metallic materials in a wide range of environmental conditions. Research on the use of tannin as a reaction inhibitor of steel corrosion in a salt solution has been carried out. One of the natural substances containing the compound tannin is maja fruit. Many contain tannins in the skin maja fruit can be used to inhibit the corrosion reaction baja. This study aims to determine the effect of the corrosion rate in carbon steel A53 in a solution of sea water with a variety of fruit skin extracts maja. Variabel used are varied concentration maja fruit skin extracts with a percentage of 0%, 0.1%, 0.2%, 0.3%, and 0 , 4%. While the parameters measured were weight loss. Corrosion rate of carbon steel A53 average at concentrations of 0% is 1.7041 mdd, 0.1% is 0.4674 mdd, 0.2% is 0.4488 mdd, 0.3% is 0.3921 mdd, and 0.4% is 0.3356 mdd. The average efficiency inhibitor maja fruit skin extracts after soaking for 45 days was 75.88% and the most effective immersion occurs on a day to 35 days amounted to 76.12%.
ANALISIS VARIASI TIPE EVAPORATOR DENGAN REFRIGERAN LPG TERHADAP UNJUK KERJA MESIN REFRIGERATOR Alif Puspita Ningrum; Digdo Listyadi R.
ROTOR Vol 9 No 1 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Refrigeration system is a system working for cooling temperature some goods or room with absorbs the heat. Refrigeration process is very important for store a food and beverage so will be able to keeep up in certain time, refrigerator development has achieve characteristic improvement about non-ODP (Ozone Depleting Potential) and non-GWP (Global Warming Potential) refrigerant as well as alternative refrigerant until now. The purpose of this research is to know about effect from variation evaporator type using LPG refrigerant againts refrigerator performance. Experimental methode did for the direct test to analyzed how much effect from variation evaporator type that are used in (serries one space, ser series two space, parallel one space, and parallel two space) useing C plate evaporator and compressor ¾ pk . This research are do it by installing an evaporator in each unit of refrigerator chamber top part and refrigerator chamber bottom part that arranged by series and parallel which is in each chamber have a breaker or without breaker. The result from the research variation  of evaporator  type for refrigerator is to know how much  the effect of  refrigeration,  compression  working, refrigeration capacity, and Coefficient Of Performance (COP). The lowest temperature is shown from evaporator type series one space, that have a value -21,2 OC. The lowest interval from both of chamber type is shown from evaporator type parallel two space, that have a value 3,64 OC. Coefficient Of Performance (COP) from series type is 9,06 for one space and 9,01 for two space, then from parallel type is 10,59 for one space and 13,43 for two space. Based from research the acquired result that is from using evaporator series type and parallel type is could be used for cooling down several room in refrigerator.
OPTIMASI PARAMETER PROSES VACUUM ASSISTED RESIN INFUSSION TERHADAP SIFAT FISIK DAN MEKANIK KOMPOSIT POLYESTER FIBER GLASS Dani Arief Bahtiar; Hari Arbiantara
ROTOR Vol 9 No 1 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Vacuum assisted resin infusion is a method which was used to manufacture composite review. The method of vacuum assisted resin infusion (VARI) method using inversely proportional to non-vacuum methods. Requires singer method air-room safe hearts printing. VARI process can be reducing the effects of fouling that much happens on as non vacuum processes which raises less than optimal properties of composite materials. Problems That study is to determine review process parameter optimization of vacuum assisted resin infusion against physical and mechanical properties of composite polyester fiber glass. Knowing the influence of vacuum pressure treatment and hardening of composite processing time in the manufacturing process of composite with VARI method in the physical and mechanical testing of surface roughness, tensile and impact. Variations were used that vacuum pressure of 0.2; 0.5; 1.0 bar and a hardening of composite 2 hours; 4 hours; 6 hours. From the research VARI composite manufacturing method, surface roughness values obtained, the tensile strength and the best impact occurs at various pressure of 0.2 bar and a time of 2 hours hardening composite has a value of 0.498 μm surface roughness, the value of 27.344 MPa tensile test and impact test values 47.859 J / mm2.
MODIFIKASI KURSI PENUMPANG KERETA API EKONOMI YANG ERGONOMIS DENGAN METODE ERGONOMIC FUNCTION DEPLOYMENT (STUDI KASUS PADA KA LOGAWA YANG DIPRODUKSI DI PT. INKA) Irma Puspitasari; R. Koekoeh K.W.
ROTOR Vol 9 No 1 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Economic train is one of transportations that is often used by Indonesian people because it has an economical cost and a wide extent. However, economic passenger seat that exists so far is still inappropriate according to anthropometry’s user. In the process of designing, it is necessary to pay attention toward the ergonomic aspect together with anthropometry approach in order to produce seat design which is suitable with the passenger’s expectation and body size. The purpose of this study is to get an ergonomic passenger seat design and to get the appropriate seat based on Indonesian’s anthropometry. The process of this study consists of distributing questionnaire and measuring the anthropometry train user, then the result of the data is by making House of Quality EFD. The data showed a specification seat : high chair 390 mm, seat depth 400 mm, width of seats one passenger 400 mm, high backrest 840 mm, the angle backrest 1050 1150, wide backrest 430 mm, high armrest 190 mm, length of the armrest 300 mm, width of the footrest 42 mm, given a pouch / bag, the thickness of the cushion 100 mm, material cushion is polyurethane foam that material cover is polyvinyl chloride, color seats gray, seat position is not face to face, and material frame from stainless steel. The result of redesign of the train passenger seat might support the sitting posture of passenger in order to make them stay healthy and ideal, and the passenger seat might have more good appearance.
PENGARUH VARIASI UKURAN PARTIKEL KOPI TERHADAP NILAI KONDUKTIVITAS TERMAL KOMPOSIT DENGAN MATRIK POLYESTER ETERSET 2504 APT Rezky Agus Setiawan; Dedi Dwilaksana; Hary Sutjahjono
ROTOR Vol 9 No 1 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Heat transfer is a science to determine heat transfer occurs in certain conditions due to temperature differences. The thermal conductivity is the nature of the form termofisik transport properties for heat transfer. Thermal conductivity value indicates how quickly heat mangalir in that particular material and understand the phenomena that occur in the conduction heat transfer. In this study focused on the value of the thermal conductivity of composite particles robusta coffee with a variety of mesh sizes 20, 40, 60, 80 and 100. The method of making composite using hand lay up. Variables used include variations in particle size coffee mesh 20, 40, 60, 80 and 100. The tests performed by the method of thermal conductivity in the composite particles of coffee. Data collection was performed by the method of observation for 60 minutes. From the research results minimum composite thermal conductivity values on the particle size of coffee that passes sieve mesh 20 that is equal to 0.006 W / mᵒC, composite thermal conductivity values optimum particle size of the coffee that passes sieve mesh 60 that is equal to 0.013 W / mᵒC. While the value of thermal conductivity composites in the coffee particle size that passes a sieve mesh of 100 decrease in the amount of 0.008 W / mᵒC. From the data analysis, it can be concluded that the smaller the particle size of the coffee, the thermal conductivity decreases indicating increased ability to inhibit heat conduction.

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