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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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Experimental Study of The Influence Use of Beeswax Against The Mechanical and Thermal Properties of Concrete Fazri Amir; Banta Cut; Rayan Rayan; Baidatul Khoir; Nasruddin Nasruddin; Muhammad Amin
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 14, No 1 (2020): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.14.1.22-26

Abstract

The economy of the whole world developed so quickly, encourage increased consumption of energy gradually. Energy consumption in the building sector has also increased with the demands of society in thermal comfort in the room. With the hot weather, the influence of the temperature in the room will rise. Some things that need to be reviewed in the manufacture of concrete in the place are the price is relatively low, easy to obtain, has high compressive strength, and has resistant to any environmental conditions. However, some problems still need to be resolved in the development of the Phase Change Material (PCM) composite that has a stable form. The proposed PCM has a thermal comfort temperature (16-26 ℃). The main purpose of this research was to investigate the influence of addition beeswax as a water-resistant mixture on the mechanical and thermal properties of concrete. In this research, the cement used was ordinary Portland Cement and replaced some of its Weight with paraffin wax in the mixture. The results of the research with the use of 10, 20 and 30% beeswax in a mixture of a concrete show that the increase in the content of Beeswax resulted in a decrease in the compressive strength of 22% and an increase in heat absorption by the concrete between without PCM with the Concrete-PCM is obtained by 10%.
Study Experimental The Effect of CaCO3 and Fe2O3 Mass Composition Ratio on Calcium Ferrite Phase Formation Base on Local Materials Iron Sand and Limestone Mastuki Mastuki; AW Brata; AG Istiawan; B Aditya; H Masrufi
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 14, No 1 (2020): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.14.1.27-31

Abstract

Iron sand contains Fe3O4 which can be produced Fe2O3 and limestone contains dominant CaCO3. Both of these materials are very abundant in Indonesia. Iron sand is generally used as building construction materials, as well as the use of limestone, there has been no development in the management of the combination of the two materials. Because of the abundance of iron sand and limestone which have not yet been developed to the fullest, a study was carried out to manage and develop the product as a follow up to the previous Calcium Ferrite research. This research focuses on analyzing the phase of Calcium Ferrite formed using XRD and SEM-EDX tests. Tests were carried out on samples with a mass ratio of a mixture of Fe2O3 and CaCO3 of 1: 4, 1: 6, 1: 8, and 1:12. The XRD test results showed that the phases formed were dominated by the Ca2Fe2O5 and Ca2Fe9O13 phases. And from the SEM-EDX test results, the results indicate the formation of nano-scale Calcium Ferrite with the composition of elements Ca, Fe, O, and Si.
Determination of Frame for Tsunami Capsule Passengers Based on the Results of Stress and Strain using Octahedral Discretization Mochamad Edoward Ramadhan; Gaguk Djatisoekamto
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 14, No 1 (2020): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.14.1.32-45

Abstract

The prototype research for the safety capsule began with the tsunami that struck Indonesia as an archipelago. Also, the United States, Japan, and China have made successful tsunami capsules in patent RIGHTS with the code US4297757 (America) spherical and in China, there are about 5 shapes that have been made CN102267549B (mushroom forms); CN203698627U (cup shape); CN204750532U (bunker form); CN204916125U (cylindrical capsule form); CN208198781U (ovoid shape). After examining existing patents and prototypes, the researchers made a prototype in the shape of a ball with a diameter of 2 meters. The material uses Stainless steel outer diameter of 25.4mm and an inner diameter of 23.9mm. The simulation uses octahedral discretion by mesh adjusting to the structure. The load uses pressure in the outer surface area, a person load of 4 with a weight of 60kg each, and for fixed constraints on the inside of spherical geometry. The purpose of the simulation is to predict the location of critical areas that experience the greatest stress and strain. The concept is applied based on the number of amplifiers given in the form of a square as a reference, the concept of 1 amplifier is given a vertical direction, the concept of 2 vertical and horizontal directions, the concept of 3 diagonal crosswise, the concept of 4 diagonal crosses and 1 amplifier of the vertical direction, the concept of 5 diagonal crosses and the direction horizontal vertical, the concept of 6 square in the middle with vertical and horizontal amplifiers, the concept of 7 square in the middle with the diagonal crossing amplifier, the concept of 8 triangles in the middle with the bottom diagonal in the middle and one horizontal direction, the concept of 9 triangles in the middle with crossed diagonals and added a directional line horizontally, the concept of 10 hexagons with the edges is given an amplifier up to the frame. The results of the simulation selection, concept 3, and Concept 6 have a strain of 0.00725mm, while Concept 6 has principal stress smaller than Concept 3 which is 3.05x106N / m with an estimated local error of 2.13 x 10-6 Joules. So that Concept 6 is set to be used as an amplifier of prototype tsunami safety capsules.
Analysis of Crystal Structure and Texture on Al-5052 Rod Processed by ECAP and Post-ECAP Annealing at 100-300 oC R. Ibrahim Purawiardi; I Nyoman Gede Putrayasa Astawa
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 14, No 1 (2020): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.14.1.14-21

Abstract

Equal-channel angular pressing (ECAP) treatment is a method to improve the mechanical properties of bulk metals without adding or extracting their alloy elements. The ECAP process can improve severe plastic deformation that will increase mechanical properties such as hardness and modulus of elasticity. The disadvantage of ECAP product is non-uniform mechanical properties. To solve this problem, the post-ECAP annealing process can be applied to form more uniform mechanical properties. This phenomena should also be caused by the change of crystal structure and texture during this process. However, the study of the change of crystal structure and texture during ECAP and followed by annealing process was seldom done. This study aims to try to determine the characteristics of crystal structure and texture of ECAPed and post-ECAP-annealed materials with annealing temperature variation of 0, 100, 200, and 300 oC. Four Al-5052 alloy rods were used as material samples. The results of this study show that the annealing process can homogenize the crystal structure of ECAPed Al-5052 rod. On the other hand, the texture characteristics of ECAPed Al-5052 rod become more random as an implication of increasing annealing temperature.
Flow Analysis In Pump As Turbines (PATs) Using Ansys Fluent Software Engkos Koswara; Haris Budiman; Nur Fikri
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 14, No 1 (2020): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.14.1.1-13

Abstract

Pump As Turbines (PATs) is a small-scale power plant that uses hydropower as its driving force. The working principle is given the flow of water from a certain height into the pump output to produce pressure at the tip of the impeller blade and will rotate the impeller blades. In this research will be an optimization of Pump As Turbines (PATs) by changing the angle of the impeller blade tip to get the optimum design of Pump As Turbines (PATs) using Ansys fluent software. In using angle tip impeller blade 600, 450, 350, 300, and 250, pressure tip impeller blade the lowest on angle tip impeller blade 600 using incoming pressure 7 psi (0.483 bar) with a pressure value tip impeller blade 0.123 bar and the biggest one is angle tip impeller blade 250 using incoming pressure 14 psi (0.965 bar) with a pressure value tip impeller blade 0.543 bar. Based on the results of the impeller blade tip pressure obtained the optimal design of Pump As Turbines (PATs) is angle tip impeller blade 250 because of the critical angle of Pump As Turbines (PATs) if you use an impeller design less than 250 then the impeller blades will run out so that it can affect the resulting rotation.
The Effect of Holding Time on Stress Relief Annealing Process to Hardness of Carbon Steel SA.106 Grade B After Welding Syukran Syukran; Azwinur Azwinur; Ferdiyansyah Ferdiyansyah
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 14, No 1 (2020): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.14.1.46-51

Abstract

Stress relief annealing (SRA) is a process of releasing residual stresses contained in the material due to the welding process. The need for SRA is due to heterogeneous changes in the microstructure when the material is exposed to the heat of welding so that it will cause the mechanical properties of the material to change. One of the mechanical properties that experience significant changes is hardness (hardness value) because it can experience an increase. Therefore it is necessary to decrease the hardness value through a heat treatment SRA that takes into account the appropriate holding time. The purpose of this study was to determine the effect of holding time variations on the value of the welding material hardness for the carbon steel case SA.106 Gr.B. During this time after welding SA106 material specifically under 19 mm thickness is not heat treatment after welding even though the welding effect will change the properties of this material, so it is necessary to heat treatment with certain holding time variations to determine its effect on the mechanical properties of the material. The welding process uses SMAW with E7018 electrodes. Specimen heating is carried out in a heating oven to a constant temperature of 650oC with variations in the heating time of 15 minutes, 30 minutes, and 45 minutes. Furthermore, hardness testing is done by testing the base metal area, heat affect zone, and weldment. The results that SRA greatly influenced the hardness value of a welded material, based on testing the highest hardness value in the SRA heat treatment was obtained at a holding time of 45 minutes with a hardness value on the base metal of 67 HRC (BM), HAZ area of 65.25 HRC, and weldment area of 64.42 HRC. But at the holding time for 45 minutes, the value of material hardness tends to be more uniform compared to other variables.
Analysis of Corrosion Rate in Centrifugal Pump Intake Pipes (Case Study: PDAM Bengkalis Indonesia) Sabri Sabri; Syahrizal Syahrizal
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 14, No 1 (2020): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.14.1.60-67

Abstract

Pipe is one of the important components for a clean water treatment system that is used to transport water flow. For the process of producing water from the reservoir to the tank, it still uses galvanized steel pipes, this type of pipe is used by PDAM Bengkalis. Based on the previous explanation, it is very necessary to do a research on the corrosion rate in the intake pipe to determine the level of corrosion that occurs by using the Ultrasonic Thickness Gauge test by looking at the thickness reduction in the pipe. This study uses an experimental method. Corrosion is a process of decreasing the quality of metal materials caused by chemical reactions between metal materials and other elements in their environment. From this study, 2 types of galvanized steel pipes are found with different ages, they are 7 years old pipe with 6 inches lenght and 10 years old pipe with 10 inches length, while the corrosion rate that occurred in the intake pipe in zone A was 0.245 mm/year, 0.392 mm/year, and 0.248 mm/year, for zone B is 0.335 mm/year and 0.268 mm/year, in zone C is a straight line pipe as a comparison factor with a corrosion rate of 0.473 mm/year, 0.470 mm/year, 0.287 mm/year, 0.464 mm/year, and 0.306 mm/year.
THE EFFECT OF SOLUTION HEAT TREATMENT HOLDING TIME VARIATIONS ON THE MECHANICAL PROPERTIES OF ALUMINUM A-6061 BY THE TIG WELDING PROCESS Azwinur, Azwinur
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.15.1.36-42

Abstract

Aluminum and its alloys are metals that are widely used in the engineering field because its have advantages including good formability, relatively high tensile strength, corrosion resistance and a welding process for the joints. General structure, structures that have poor mechanical properties. To overcome this problem, the material that has been welded is heat treated or heat treated according to temperature and time management) which is suitable in addition to good mechanical properties as well as to reduce residual stresses. The purpose of this research is to determine the tensile strength and hardness value of welding joints of Aluminum 6061 with a variation of Holding Time 1, 2, 3 hours in the Solution Heat Treatment process with a temperature of 5000C. The results showed that based on the results of the tensile test, it showed that the holding time affected the value of the tensile strength and strain of the welding joint where the highest tensile test value was at a holding time of 1 hour, while the highest strain value was at a holding time of 2 hours. Then from the hardness test data, it shows that the heating duration or holding time affects the hardness value of the material both in the weld metal, HAZ, and base metal areas. In the weld metal area, the highest hardness value is at a holding time of 3 hours. The HAZ area has the highest hardness value at a holding time of 2 hours, while the base metal region has the highest hardness value at a holding time of 1 hour.
OPTIMIZATION OF PROCESS PARAMETERS IN 3D PRINTING FDM BY USING THE TAGUCHI AND GREY RELATIONAL ANALYSIS METHODS Arifin, Fatahul; Zamheri, Ahmad; Herlambang, Yusuf Dewantoro; Syahputra, Angga Panjy; Apriansyah, Icvan; Franando, Franando
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.15.1.1-10

Abstract

The 3D printing technology is one of the technologies that is developing currently. This machine can make products easily, quickly, and precisely. 3D printing is used to print models, prototypes/modeling, teaching aids for education, health support devices, product design, and many more in 3D shapes. Fused Deposition Modeling (FDM) is the most popular among others 3D printing techniques. In simple concept, it does not need maintenance regarding solvents or glue. The spare parts can be found easily and cheaply.  In this research, we create objects by using Autodesk inventor that is called human denture. Then, it converted to G-Code using Simplyfy3D software version 4.1.2. The G-Code data is used in the 3D printer for making the product. We select parameters to print the product. In this study, we find the optimal parameters of the effect of shrinkage and hardness of the product. The 3 parameters are in this study namely; layer height, print speed, temperature print. The material of human denture is filament PLA +. The Taguchi method and Grey analysis are used to analyze the data result. The results of the analysis for optimal parameters are at Layer Height 0.15 mm, Print Speed 25 mm/s, and Print Temperature 210⁰C.
EFFECT OF IGNITION SYSTEM IN MOTORCYCLE TO PERFORMANCE AND EXHAUST GAS EMISSIONS WITH FUEL RON 88, RON 90, AND RON 92 Julianto, Eko; Stiawan, Dony; Fuazen, Fuazen; Sarwono, Eko
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.14.2.74-79

Abstract

In the automotive field, the development of motorcycle ignition systems has been able to improve engine performance more fuel efficient. TCI has the advantage of transferring high voltage to the spark plug, the results issued from TCI are greater than the CDI system. To find out the results of motorcycle performance, namely the TCI ignition system and spark plugs on performance and exhaust emissions from motorcycles that use fuels such as Premium Ron 80, Pertalite Ron 90, and Pertamax Ron 92. Fuels that have octane that matches the bicycle motorcycles, in addition to the better performance of motorcycle engines, the fuel consumption is also more economical. In this study there are three variables, namely variations in rpm, performance and exhaust emissions. The results of the study of motorcycles that use the Ron 92 Pertamax fuel have far more torque and power than those that use the Ron 80 premium fuel and the pertalite Ron 90, while the HC levels produced by Ron 80 and 90 fuels tend to increase more than Ron fuel 92 which is between 65 - 228 ppm. CO2 levels were 12.53% while Pertamax was 10.74%, and pertalite was 11.17%, while the CO content produced was small at 3750 rpm resulting CO levels of 0.08 ppm. It can be concluded that the ignition produced is more stable which uses Pertamax fuel compared to using premium and pertalite fuel.

Page 18 of 27 | Total Record : 269

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