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ROTOR: JURNAL ILMIAH TEKNIK MESIN

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Published by Universitas Jember

ISSN : 1979018x EISSN : 24600385 DOI : -

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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PENGARUH WAKTU PENUAAN TIRUAN TERHADAP KEKERASAN PADUAN Al-10Si-3Cu Muhammad Syahid; Hairul Arsyad; Abdul Fatah Rozali
ROTOR 2017: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Al-Si alloy is one of the alloys that are widely used in the industry because it has a good cast and good strength. To increase its mechanical strength Cu alloy can be added which can be covered. Al-10Si-Cu alloy is one of the alloys commonly used in industry, especially the automotive industry because it has excellent mechanical strength. This research is focused on looking at the effect of artificial aging on T6 heat treatment to increase the hardness of Al-10Si-3Cu alloy results from casting. Dilution behavior was carried out at a temperature of 520 oC for 2 hours then quenched in water and then performed artificial aging carried out at 130oC with aging time varying from 5 minutes to 120 hours. Material characterization carried out hardness testing, tensile test, microstructure observation with an optical microscope. The highest hardness was obtained with an 80 hour holding time of 86.05 BHN where CuAl2 precipitates underwent optimum conditions. The most upper tensile strength was collected at 80 hours holding time, namely 335.063 MPa with strain value 1.133%. A low strain value indicates that this condition has begun to overgrow, so embryo has started to occur. Keywords: heat treatment, aluminum, Al-10Si, artificial aging Keywords: heat treatment, aluminum, Al - 10Si, artificial aging

PENGARUH SUDUT TEKUK (CANT) WINGLET MENGGUNAKAN AIRFOIL NACA 2215 PADA AERODINAMIKA SAYAP PESAWAT Ibrahim Hanif; Asdin Amroe An Nafi; Gaguk Jatisukamto
ROTOR 2017: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Flight performance is determined by the lift coefficient (CL) and drag coefficient (CD). CL and CD values are influenced by the geometric shapes of aircraft wings. Air flow through the side of the aircraft causes wingtip vortices. Wingtip vortices add induced drag to the arms of the aircraft, creating reduced aircraft aerodynamic performance. Induced drag is a drag that results from the whirlwind of air flow due to differences in pressure on the surface of an aircraft wing. Previous studies obtained data that the use of winglets on sides with 45 o bending angle can increase the CL / CD ratio by 20.73% when compared to winglets. Winglet bend angle affects fluid flow and CL / CD ratio. The purpose of the study was to analyze the winglet bend angle of the aircraft wing aerodynamic performance. The winglet bending angle variations used were 0o, 30o, 60o, and 91.4o. Analysis of the bending angle on the winglet was done with VLAERO + software. The winglet bend angle is simulated with aircraft attack angles including - 15o, -10o, -5 o, 0o, 5o, 10o, 15o and 20o. The results showed that data for bending edge 91.4o produced CL / CD of 97.452, while wings without winglets only had CL / CD values of 80.701 at 0o attack angle. Winglets with 0o buckling angles reduce CD max at a 20o attack angle by 7.03%. The conclusion of the study informs that the addition of winglets can improve the aerodynamic performance of aircraft wings. Keywords: winglet, VLAERO +, cant angle, lift coefficient, drag coefficient.

ANALISIS STRUKTUR STATIS PROVISION CRANE DENGAN SOFTWARE ANSYS 16.2 Widyaningrum Febriolita; Jatisukamto Gaguk; Ilminnafik Nasrul
ROTOR Vol 11 No 1 (2018)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Provision crane is one type of crane used for loading and unloading on ships. Material provision cranes used in this study are structural steel with a cross-section of hollow pipes. This study aims to analyze the strength and equilibrium of the structure of provision cranes. The research methodology used is the analysis of finite element analysis with Ansys 16.2 software. The results of the structural analysis show that the maximum deflection occurs at the end of the boom arm, namely aks max = 0.93843 mm; σymaks maximum yield stress = 36,233 MPa; the maximum yield strain εymaks = 0.027632%. Key Words: provision crane, finite element method, Ansys 16.2, δmaks, σy maks

ANALISIS PENGARUH TEBAL PELAT WELDING REPAIR PADA KEMUDI KAPAL (RUDDER) TERHADAP EFEKTIVITAS MANUVER KAPAL DENGAN Fiveriati Anggra; Darma Yonathan Eka Yeddid; Puspasari Vinda
ROTOR Vol 11 No 2 (2018)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Ship maneuverability is the ability of the ship to rotate and change direction in all conditions of the water when the rudder (steering) turns to form a certain angle; there is a change in pressure, speed and direction of fluid flow, this causes changes in the course of the ship. Corals that produce the rudder of the vessel to crack or break because of the impact of the rock at that time the rudder needs a repair. Repair on the rudder of the ship is usually carried out on the leaves and sticks of steering, one of the repairs processes is by welding, but if the rudder undergoes a reparation process many times, it will cause changes in metallurgical material due to excessive heat treatment. In the process of repairing the rudder, the new plate used to improve the maximum is 1 mm with an old plate, and the rear side of the rudder experiences a higher load because in this part the flow distribution is stacked from the front of the rudder. The results of this study are repaired rudder experiencing an increase of 16% -18% drag and lift force, the faster the ship runs, the higher the drag and lift force so that the resistance is also greater Keywords: Rudder, Maneuver, Repair

DESAIN PENGEMBANGAN UNIT PENGOLAHAN LIMBAH PLASTIK PADA KELOMPOK PEMULUNG DI KOTA MALANG Widjanarko Widjanarko; Nilawati Fiernaningsih; Pudji Herijanto
ROTOR Vol 10 No 2 (2017)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Types of waste issued by industries and communities are organic and non-organic. Non-organic waste can not decompose naturally but it needs human effort to process it by recycling, one of which is plastic waste. The method is the identification and formulation of problems in landfills / TPS and scavengers, then determined the purpose of the study. By literature study and field study can be concluded that the concept of a suitable problem solving is the method of Quality Function Deployment (QFD). Implementation of QFD in this study to determine the scavengers desire in improving the economic level, by distributing questionnaires to scavengers in Malang. The conclusion of this research is that scavengers want to increase their economic level by adding value to plastic waste. The value added criterion in this research is the increase of plastic waste price from ± Rp 6.000,00 / kg to ± Rp 12.000,00 / kg in the form of chopped. Design of product development of plastic waste cutter machine desired by the user / scavengers at an affordable price of 84.33% and in terms of capacity 72.33%, is a machine with a price of Rp 5,500,000.00 and a capacity of 10 kg / hour. Keywords: Plastic Waste, Scavengers, Economic Level, Affordable price, Capacity

ANALISIS EFISIENSI ENERGI FLOW BATERAI LEAD ACID KEADAAN STATIS DAN DINAMIS Muhammad Ghufron; Pranata Budi Kurriawan; Istiroyah Istiroyah; Perwita Anik Cholisina
ROTOR Vol 10 No 2 (2017)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Charging-discharging research was conducted on Redox Flow battery (RFB) using Pb as cathode, PbO as anode, and H2SO4 solution as electrolyte. The research was done by using static and dynamic methode. The experimental shows that RFB was succesfully created and show secondary battery characteristic (charge and discharge graph). According to the charge-discharge characteristic for 5 cycles RFB, shows that the RFB capacity is 1800 mAh when RFB on the static mode while RFB in dynamic mode, the capacity is 2900 mAh. Based on the graph, it was found that the energy efficiency of RFB in the static mode is 50,1% and 71,1% for dynamic mode. Keywords: Charging, discharging, RFB, Energy eficiency

ANALISIS PENGARUH VANE TERHADAP KARAKTERISTIK DOUBLE SLOTTED FLAP PESAWAT N2XX DENGAN METODE SIMULASI COMPUTATIONAL FLUID DYNAMIC Mirna Sari; Gaguk J atisukamto; Gembong Djoni Putranto
ROTOR 2017: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

The stability of an airplane is influenced by aerodynamic characteristics, one of which is the lift coefficient (C). The value C is the ratio between the lift force (L) and the dynamic pressure (q). The value of C is determined based on the design of the airfoil shape and the use of the type of flap. The increase in C from the previous study using the simulation method obtained 20.4% with the addition of a flap. This study aims to simulate folds by adding vane (double slotted flap). The methodology in the study uses a simulation of Computational Fluid Dynamic (CFD). The research results of airfoils with the blade having a maximum C of 35.99% are higher than airfoil designs without vane, or 5.77 and 5.61 respectively. The maximum C value of an airfoil with vane or airfoil without using blade occurs at the angle of attack (α) = 16o. The research conclusion informs that vane influences the characteristics of the N2XX aircraft. Vane can minimize the occurrence of a stall (decrease in the value of C) of airplanes in take-off and landing conditions. Keywords: C, vane, double slotted flap, airfoil

ANALISIS MESIN FILLING MINYAK GORENG BERBASIS PLC MENGGUNAKAN METODE PENAKAR DAN TIMER UNTUK MENINGKATKAN EFISIENSI M. Angga Saputra; Ahmad Syuhri; Aris Zainul Muttaqin
ROTOR 2017: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Since 2006 Indonesia has become the world's largest producer of Crude Palm Oil. Also, palm oil is a strategic commodity both as food (cooking oil). The need for self-cooking oil every day is increasing, causing businessmen who plunge not only to have significant capital but many from SMEs and MSMEs who start a cooking industry in the home industry. In the home industry for cooking oil packaging, the manual method is still used, which is to drain oil from the reservoir to the package through a pipe that is given a tap to open and close. This study studied PLC-based cooking oil filling machines using a timer and timer method to improve efficiency, charging speed, errors as small as possible and to increase production capacity. The test results showed that the cooking oil filling process using the measuring method had an average of 159,478 (g / dt) with an average oil yield of 689.2 grams with an error rate of 0.23%. While the timer method has an average filling speed of 164.336 (g / dt) with an average oil yield of 692.08 grams with an error of 0.336%. The timer method has a faster-charging speed compared to the measuring process, but for the error rate, the purpose is better than the timer method. This is due to the way of using the rotary encoder sensor when charging, so the time required for charging is a little long but with a small error rate. While the timer method uses a timer sensor that is on the PLC to make charging directly into the bottle but has a more significant error compared to using the measuring process. For engine capacity, it is better to use a timer method that produces 5145 liters/day while the gauge method is only 4984 liters/day. whereas for efficiency, it is better the process of measuring is 99.68%, and the timer method is 99.27% Keywords: Timer Method, Measuring Method, Cooking Oil Filling Machine and PLC

OPTIMASI PARAMETER PEMESINAN WIRE ELECTRIC DISCHARGE MACHINING BAJA PERKAKAS SKD 11 MENGGUNAKAN METODE TAGUCHI Setiawan Okik Aris; Djumhariyanto Dwi; Mulyadi Santoso
ROTOR Vol 11 No 2 (2018)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

EDM wire is one of the non-conventional machinings that is currently widely used in the manufacturing industry because it can process workpieces with hard material and also produces excellent dimensional accuracy. This research was carried out with variable current, voltage and wire speed processes. While the response variable is the material removal rate and cutting width (kerf), this study aims to determine the effect of each factor on each response as well as on the combined response and to find the right combination of parameters to produce optimal response values. The results of the study stated that the current strong factor contributed 89.84% and the wire speed factor was 8.26% against the cutting width response (kerf). The current strong element contributes 87.88% to the material removal rate response. As for the combined response, the influential factor was wire speed with a contribution of 92.79%. The optimal combination of parameters in the combined response is 7 amperes, 5 volts and 10 m / s wire speed. The conclusion of this study informs that the smaller the current strength, the better the value of the cutting width, while the more significant the current force will result in a higher removal rate material. The factor that influences the combined response is wire speed, where the increase in the value of the wire speed increases the amount of the Gray Relational Grade from the combined response. Keywords: Wire EDM, SKD 11 Steel, Taguchi, Optimization

ANALISIS PENGARUH VARIASI GRADE BIOETANOL TERHADAP DISTRIBUSI TEMPERATUR NYALA API DAN UNJUK KERJA PADA KOMPOR BIOETANOL TANPA SUMBU TIPE TOP BURNER Adhitia Yanuar Pratama; Andi Sanata; Hary Sutjahjono
ROTOR Vol 6 No 1 (2013)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Top burner cotton less bioethanol stove is one of the appliances that apply the use of renewable fuels for domestic capacity. Application of this stove burner is a solution for scarcity of fossil fuel supplies. This study focused on variations in the distribution of flame temperature and performance on the top burner as grade of bioethanol varies at value of 55%, 70%, 85%, and 97%. Flame temperature distribution measured at of their hot spots and then simulated using Matlab R2011a to obtain isothermal contour flame shape and determine the flame temperature distribution of the flame. Performance testing used Standard International Water Boiling Test version 4.1.2 to determine the power, thermal efficiency, specific fuel consumption, and heat transfer. Results obtained that the flame temperature distribution, in the form of profiles and contours isothermal flame, reached its optimum when using bioethanol grade of 97%. Optimal performance on a stove burner using bioethanol 97% with power stove equal to 1.85 kW, the thermal efficiency of 72.21%, specific fuel consumption (Sfc) 0.512 kgbb/kguap, and heat transfer at value of 2,959 kW was also achieved at the same grade. The higher grade bioethanol used to increase the flame temperature distribution and performance of the stove. Keywords: Bioethanol, Stove, Temperature Distribution, Performance

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Nasrul Ilminnafik

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Jl Kalimantan 37

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Kab. jember,

Jawa timur

INDONESIA