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SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin
Published by Universitas Muhammadiyah Jakarta
ISSN : 20889038     EISSN : 25499645     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Control & Systems Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin is an open access, peer-review journal which publishes original and review articles that advance the understanding of both the fundamentals of engineering science and its application to the solution of challenges and problems in mechanical engineering systems, machines and components. The editorial team aims to publish high quality and highly applied research and innovation that has the potential to be widely disseminated, taking into consideration the potential mechanical engineering that it could generate.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 269 Documents
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MEASUREMENT OF EFFICIENCY UTILIZATION OF OIL PALM SOLID WASTE TO REDUCE FUEL IMPORT LEVELS IN INDONESIA Hendra, Franka; TH, Estiningsih; Effendi, Riki
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 15 No. 1 (2021): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.15.1.51-58

Abstract

Indonesia is one of the countries that have a fairly high level of consumption of fuel oil (BBM), based on data from BPH Migas (2018) throughout 2018 which reached 75 million kiloliters or an average of 1.6 million kiloliters per day. The consumption includes 16.2 million kiloliters of certain types of fuel (JBT), special types of fuel for assignment (JBKP), and general types of fuel around 51.3 kiloliters. The data is growing this study aims to measure the efficiency of reducing imports of fuel oil by utilizing solid waste of palm oil and to make proposals for the formulation of planning scenarios to optimize the functions of the Indonesian palm oil downstream industry. This research method combines quantitative and qualitative methods using the concept of efficiency and the Scenario Planning model. The method used in this paper is to calculate the level of efficiency using quantitative data on oil palm based on the amount of plantation area and the solid waste it produces. Then a mapping of the downstream palm oil industry will be carried out by reviewing the results of previous research as well as data and information obtained from accurate sources. The result is that by optimizing the utilization of palm oil solid waste, 7.4 billion liters of bioethanol can be obtained which can be used to produce biofuels to reduce the level of imports of fuel oil in Indonesia.
EFFECT OF CYLINDER SURFACE ROUGHNESS TO THE DISTANCE FORMATION OF VORTEX Heriyani, Oktarina; Mugisidi, Dan; Hilmi, Irfan
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 14 No. 2 (2020): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.14.2.94-98

Abstract

Reduction of cylinder surface resistance can be accomplished by modifying roughness. The surface roughness structure is one of the important parameters which greatly affects the flow of fluid through the cylinder surface. Fluid flow forms a vortex flow pattern with certain characteristics. Therefore, this study aims to analyze the characteristics and effects of fluid flow through the rough surface of the outer wall of the pipe with visualization using Particle Image Velocity (PIV). This research was conducted experimentally at the Faculty of Engineering, UHAMKA. The pipe surface roughness values varied were 0.648 µm and 1.699 µm. The length of the pipe used is 20 cm with a diameter of 2 inches. Measurements are made from the center of the pipe to a distance of 0.16 m. The results show that the surface roughness of the cylinder pipe affects the fluid flow characteristics where the formation of eddies is caused by the addition of the roughness value. The rougher the pipe surface is, the farther the vortex formation will be. The vortex formation closest to the pipe is a pipe with a roughness value of 0.648 µm at a distance of 0.04 m.
COOLANT CIRCULATION IMPROVEMENT ON THE CHIP TUB OF THE MACHINE LNC OKUMA 0002 PT. KOMATSU UNDERCARRIAGE INDONESIA Prastama, Muhammad Aditya Artha; Gusniar, Iwan Nugraha; Kardiman, Kardiman
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 15 No. 1 (2021): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.15.1.68-73

Abstract

In general, coolant is a cooling medium used to cool workpieces and cutting tools during the machining process. In PT Komatsu Undercariage Indonesia, the LNC OKUMA 0002 chip crankcase contained a lot of stagnant coolants. The factor that causes the coolant to stagnate is that the growl is wasted through the chip conveyor and the coolant is carried along with the growl to the chip. Changing the coolant fluid needs to be done in a certain phase because the use of the coolant for too long causes sand to accumulate. Excessive sand can close the cooling duct system. The quality of the coolant can deteriorate due to heat and a dirty environment. In addition, corrosion on the radiator can also result in the deposition of dirt on the coolant. When this happens, the engine overheats easily and triggers a stall. The repairs that have been carried out are examining and repairing the components of the coolant system by adding a coolant channel and a pump that functions to suck the coolant so that the coolant returns to the LNC OKUMA 0002 engine.
LINE BALANCING ANALYSIS BY USED RANK POSITIONAL WEIGHT (RPW) (CASE STUDY: PART BODY S11038Z PROCESS) Supriyono, Supriyono; Suryanto, Dwi; Hendra, Franka; Effendi, Riki
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 14 No. 2 (2020): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.14.2.123-129

Abstract

The purpose of this paper is to determine the number of proposed work stations based on Rank Positional Weight and to find out the results of the comparison between the initial work station conditions and the proposed work station conditions. The method used in optimizing Line Balancing is the Rank Positional Weight (RPW) method by calculating the amount of processing time, Balance Delay, Smoothness Index, the largest track efficiency, and station efficiency. The results of the comparison between the initial work station conditions and the proposed work station conditions using the RPW method in the total production process time of the S11038Z section from the initial conditions of 1060.23 seconds after analysis using the RPW method obtained a shorter processing time of 970.23 seconds or reduced by 90 seconds. The balance delay in the initial condition was 67.6% with the RPW method, the result was that the balance delay was better, namely 62.9%. The smoothness index in the initial conditions is 1059.79 to 857.88. The tracking efficiency increased by 4.7%, from 32.4% to 37.1%. The efficiency of the biggest workstations also increased, from 489 seconds to 399 seconds.
TESTING THE FLEXURAL PROPERTIES OF POLYMER COMPOSITES FOAMING HYBRID OIL PALM EMPTY FRUIT BUNCHES (OPEFB) AND ZINC OXIDE (ZnO) Adlie, Taufan Arif; Rizal, Samsul; Ali, Nurdin; Huzni, Syifaul; Arif, Zainal; Suheri, Suheri
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 14 No. 2 (2020): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.14.2.68-73

Abstract

Oil palm empty fruit bunches (OPEFB) is one of the palm oil industry solid wastes that can be used as an alternative material to product composites. This research was conducted to determine the effect of the addition of Zinc Oxide (ZnO) as a filler material hybridized with OPEFB fiber to the flexural strength of polymeric foam composites. The aim of this research is to obtain the strength of the flexural test value of the composite material polymeric foam reinforced OPEFB fiber and Zinc Oxide (ZnO) with reference to the ASTM D790-92 standard. The composition of the specimens are 70% Resin, 15% OPEFB Fiber, 15% Polyurethane with different fiber sizes namely mesh (40, 60, 80, 100) and the addition of Zinc Oxide (ZnO) of (0%, 5%, 10%, 15%, 20%). The test specimen used for each composition is 5 samples, so that the entire test sample is 100 samples. From the test data it can be concluded the value of flexural strength in the 100 mesh OPEFB specimens and the addition of Zinc Oxide (ZnO) 10% is the best composition compared to 40, 60 and 80 mesh OPEFB with the addition of Zinc Oxide (ZnO) 5%, 15%, and 20%, where the voltage value is 10,01141 MPa and the strain value is 0,898456 mm / mm. From the research data it can also be concluded that the smaller the OPEFB fiber size with the addition of zinc oxidation (ZnO) 10%, the flexural strength of the polymeric foam composite material will be better.
IDENTIFICATION OF POTENTIAL HAZARDS ON PRODUCTION MACHINES WITH HAZOPS AND FISHBONE DIAGRAM IN PT. SILINDER KONVERTER INTERNASIONAL Bastuti, Sofian; TH, Estiningsih
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 15 No. 1 (2021): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.15.1.17-25

Abstract

PT. Silinder Konverter Internasional is a company in the field of Rotogravure Cylinders. The company is a chemical sector industry and has only been running for about 2 years, for that the company needs to pay attention to the issues of Occupational Safety and Health because this greatly affects the company's productivity. The purpose of this study was to identify the factors causing occupational safety and health hazards to avoid work accidents at PT. Silinder Konverter Internasional. From the results of the research using the Hazards Operability Study (HAZOPS) method, there was 38 potential (40%) chemical potential hazards, 28 potential (29.47%) overwritten materials, 14 potential scratches (14.73%), 12 potential pinches (12.63%), and 3 potential noise levels (3.2%). Furthermore, the causal factors are searched with the fishbone diagram of the most potential hazard cases, namely chemical exposure, there are 12 factors. Followed by finding the dominant causative factors with the Nominal Group Technique (NGT) there are 7 factors. Then plan improvement of the 7 factors with the 5W + 1H method so that the level of risk of work accidents decreases.
MODELING AND VIBRATION RESPONSE ANALYSIS OF PELLET MACHINE GRINDER AND GEARBOX Lostari, Aini; Susastro, Susastro; Machfuroh, Talifatim
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 14 No. 2 (2020): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.14.2.99-106

Abstract

Pellet machine is a machine used to print feed in the form of pellets. In this machine, if it operates, it can experience excessive vibration and the force acting on the machine is close to its natural frequency and can cause damage, so it needs to be reduced. In this study, the objective of this research is to model and simulate vibrations in the gearbox and grinder to determine the results of the displacement and acceleration vibration responses on the pellet machine. In this study, an electric motor is used as a source of rotation and an input clutch as a connection between the shaft of the electric motor and the gearbox as a transmission to reduce the speed of the electric motor, where the rotation produced by the electric motor contains vibrations, the output coupling is the connecting shaft between the gearbox shaft and the shaft grinder and miller as a tool used to print pellets. From the existing physical form, mathematical equations and simulation blocks are constructed. In this research, it is found that the vibration response generated from the gearbox and grinder can be modeled with the x and z axes as the center of the system. The higher the vibration response, the higher the given frequency, the greater the amplitude and rms of the displacement and acceleration responses in each part, namely the motor, clutch in, gearbox gearbox, coupling out, and grinder will be greater. The result of displacement vibration response yields an rms of 1.956. The worm gear in the gearbox produces a displacement vibration of 1.0585 m and an acceleration of 6.8485 m/s2. The mill produces a displacement vibration of 1.0891 m and an acceleration of 5.1095 m/s2.
DESIGN OF REACTOR AND CONDENSOR OF COCONUT SHELL LIQUID SMOKE CAPACITY 35O KG/PROCESS Gafur, Abdul
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 15 No. 2 (2021): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.15.2.95-102

Abstract

The problem faced by the coconut shell charcoal business group is that a lot of smoke is produced from the combustion process. The process of processing coconut shells into charcoal still uses the manual method, which is burned using used drums so that the smoke from the combustion process is very disturbing to the surrounding environment. Another problem is the capacity of used drums is very limited, one process can only process 100 kilograms of coconut shells, if the production is 1 ton per day it will take 10 pieces of used drums, this results in inefficient work and requires extra energy. Another problem that is also very disturbing is smoke pollution resulting from burning coconut shells. This smoke pollution is very disturbing to the surrounding environment so it needs special handling to remove this smoke. The entrepreneurs do not yet have the knowledge of technology that can be used to reduce smoke pollution and make processing work more efficient. Therefore, in this study, a research will be conducted on the efficiency of the coconut shell liquid smoke condenser. In this research, 1 reactor and condenser will be designed and built with a capacity of 500 kg coconut shell for each process, the technology used is gasification system and liquid smoke technology uses condenser technology and spiral pipe as smoke condenser. The research method that will be carried out will use the method of design, calculation and the process of making tools.
PERFORMANCE ANALYSIS OF BOILER FEED WATER PUMP SULZER AT PLTU AT PT INDONESIA CHEMICAL ALUMINA Julianto, Eko; Fuazen, Fuazen; Gunarto, Gunarto; Sarwono, Eko
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 15 No. 2 (2021): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.15.2.103-106

Abstract

In this research, boiler feed water pump at PLTU PT.ICA has a flow rate capacity of 85 m3 / h which is installed sporadically with a motor to drive the pump. This pump has an important role and the main pump for filling feed water from dearator into the steam drum (boler) which is always used for 2 years with varying flow rates.  Data needed for evaluation include pressure and temperature of the suction, pressure and temperature of the discharge, flow rate and electric current. The data were taken starting in January to Maret 2019. Data processing was performed using a centrifugal pump calculations includes head, water horse power  (whp), brake horse power (bhp) and efficiency presented in tables and graphs using Microsoft Excel. Boiler feed water pump sulzer during operations 3 months amounted the highest head amounted 1212,23 m, the highest whp amounted 223,25 kw, the highest bhp amounted 237,21 kw and the highest efficiency amounted 95,67 %, while the lowest head amounted 928,53 m, the lowest whp amounted 72,68 kw, the lowes bhp amounted 197,14 kw and thelowest efficiency amounted 36,85 %. Change of performance bfp occur due to changes flow rate and pressure suction which adjust operational needs.
PLANNING AND MANUFACTURING OF TRANSMISSION OF CORN COB COUNTING EQUIPMENT USING 1 HP ELECTRIC MOTOR WITH A CAPACITY OF 2 KG PER 5 MINUTES Nasution, Ahmad Yunus; Effendi, Riki; Najamudin, Muhammad
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 15 No. 2 (2021): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.15.2.107-111

Abstract

Corn cobs are a cultural problem in the NTB region because they are very influential at post-harvest harvesting. Poor handling of post-harvest corn cobs is a very serious problem in the area. Where corn cobs are only used by the community in general, making corn cobs as a mosquito repellent, by burning corn cobs. Corn cobs are corn residues resulting from shelling seeds which contain potential compounds that can be biologically transformed into other compounds, namely lignin, cellulose and hemicellulose. For example, making corn cobs chopper as a tool in handling post-harvest results. The purpose of this plan is to produce an efficient corn cob chopping machine so that it is useful for the community in NTB. The results of observations from the previous tool and processing data will be used to make the design size of the corncob chopper according to the real conditions of the previous tool. The results of the calculation of the transmission system of the corn cob chopper showed that the rotation of the electric motor was 1 HP = 1400 rpm, the shaft diameter was 20 mm, the seat belt used type A with a length of 828.4 mm. The materials used in this corncob chopping knife are as follows: knife = stainless steel material, bearing = cast iron, vant belt = rubber, pulley = aluminum, shaft = S35C-D. From the results of testing the corn cob chopper, 2 kg was obtained in 5 minutes.

Page 20 of 27 | Total Record : 269

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