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Sprocket : Journal of Mechanical Engineering
Published by Universitas HKBP Nommensen
ISSN : -     EISSN : 26858916     DOI : https://doi.org/10.36655/sproket.v1i1
Core Subject : Science, Engineering,
Automotive Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
SPROCKET Journal of Mechanical Engineering (SJoME) adalah jurnal ilmiah yang berisi tentang publikasi hasil karya penelitian, perancangan dan kajian teori di bidang ilmu teknik mesin dan permesinan, meliputi konversi energi, manufakturing, material dan perancangan desain produk. SJoME diterbitkan oleh Program Studi Teknik Mesin Fakultas Teknik, Universitas HKBP Nommensen, Medan Indonesia. SJoME terbit 2 (dua) kali dalam setahun, yaitu pada bulan Februari dan Agustus.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 5 Documents
 1 
Search results for , issue "Vol 1 No 2 (2020): Edisi Februari 2020" : 5 Documents clear
Desain dan Manufaktur Model Piston Jupiter MX 135 cc Dengan Menggunakan 3D Printer Wandro Siregar; Richard A.M. Napitupulu; Parulian Siagian
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 1 No 2 (2020): Edisi Februari 2020
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (776.137 KB) | DOI: 10.36655/sprocket.v1i2.161

Abstract

A product that will be mass produced requires an initial prototype so that it can assess whether a product design meets the desired criteria and is ready to be mass produced. For the purposes of making the initial prototyping, one alternative is to use 3D printing. Prototyping is an early example of a concept as part of the product development process. Rapid Prototyping allows the visualization of a 3D (three-dimension) image into an original three-dimensional object that has a volume. In addition, rapid prototyping products can also be used to test certain parts. In the design process the 2017 Solidworks software and manufacturing process are used anet type 3D printer. In the manufacturing process many 3D Printer parameters must be regulated and very influential on the manufacturing results to be obtained, including the 3D printer parameter settings in the slicing process. This is a process that is very influential on the results, where the process of slicing the material temperature, printing speed, wall thickness, layer thickness and support must be set properly. In the future it is expected that research on 3D printing manufacturing results with the same printer parameters for the design results of some CAD software.
PERFORMANSI PEMANAS AIR TENAGA SURYA DENGAN PENAMBAHAN SIRIP PADA PIPA KOLEKTOR Himsar Ambarita; Firman Siahaan; Herdy -; H.V Sihombing
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 1 No 2 (2020): Edisi Februari 2020
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (874.641 KB) | DOI: 10.36655/sprocket.v1i2.180

Abstract

The solar energy that reaches the earth's surface can be converted into heat energy using solar collectors. Inside the collector, there are several components including a heating pipe as a medium to drain water to the storage tank. There are several factors that increase the performance of solar collectors including the addition of fins to the pipe which will increase the collector's cross-sectional area. This study compares solar collectors with and without the addition of fins, the aim of improving the performance of solar water heater collectors with the addition of fins. Where the dimensions of the fins used are 50 x 12 x 0.3 mm. testing is done by comparing the two collectors. The results showed an increase in temperature in solar water heaters with the addition of fins to the pipe and an increase in efficiency of 18.67% compared to solar water heaters without the addition of fins.
Desain dan Pembuatan Prototype Piston Honda MEGAPRO FI Menggunakan 3D Printing Frince Marbun; Richard A M Napitupulu
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 1 No 2 (2020): Edisi Februari 2020
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (984.577 KB) | DOI: 10.36655/sprocket.v1i2.184

Abstract

3D printing technology has great potential in today's manufacturing world, one of its uses is in making miniatures or prototypes of a product such as a piston. One of the most famous and inexpensive 3D printing (additive manufacturing) technologies is Fused Deposition Modeling (FDM), the principle FDM works by thermoplastic extrusion through a hot nozzle at melting temperature then the product is made layer by layer. The two most commonly used materials are ABS and PLA so it is very important to know the accuracy of product dimensions. FDM 3D Printing Technology is able to make duplicate products accurately using PLA material. FDM machines work by printing parts that have been designed by computer-aided design (CAD) and then exported in the form of STL or .stl files and uploaded to the slicer program to govern the printing press according to the design. Using Anet A8 brand 3D printing tools that are available to the public, Slicing of general CAD geometry files such as autocad and solidwork is the basis for making this object. This software is very important to facilitate the design process to be printed. Some examples of software that can be downloaded and used free of charge such as Repetier-Host and Cura. by changing the parameters in the slicer software is very influential in the 3D printing manufacturing process.
Analisis FEM Dari Suhu HAZ Dengan Pemodelan Sumber Panas Pada Proses Butt-Joint Menggunakan MSC Marc Mentat Rokki Manurung; Septiani Silitonga; Yohanes Hutahaean; Charles S.P Manurung; Parulian Siagian; Richard A M Napitupulu
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 1 No 2 (2020): Edisi Februari 2020
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (774.902 KB) | DOI: 10.36655/sprocket.v1i2.185

Abstract

The success of the welding process is the occurrence of good and strong welding joints that are inseparable from the influence of the heat source. The problem that often occurs when welding is a distortion that can trigger the initial formation of cracks. By predicting the level of welding distortion beforehand, engineers can also reduce the amount of rework by reverse design and distortion margins. That is why with current technological developments it is possible to carry out simulations based on analytical solutions that are implemented through the use of software, where in this study the authors sought to model the temperature of the HAZ region in the Butt Joint process using MSC Marc Mentat. The simulation results show that the heat source is very determining the occurrence of distortion and pressure on the surface. This is caused by the phenomenon of melting and shrinkage that occurs in a short time.
Analisa Laju Korosi dan Kekerasan Pada Stainless Steel 316 L Dalam Larutan 10 % NaCl Dengan Variasi Waktu Perendaman Arga Jeremia Sinaga; Charles Manurung
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 1 No 2 (2020): Edisi Februari 2020
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (515.068 KB) | DOI: 10.36655/sprocket.v1i2.186

Abstract

Corrosion is an electrochemical reaction between metals and the environment that causes corrosion and decreases the quality of metals. Steel is a metal material that is widely applied in the industrial world. Stainless steel is stainless steel that is resistant to corrosion because it has an alloying element of at least 18% chrome and 8% nickel. To find out the superiority of stainless steel as a construction material, research on local corrosion of stainless steel needs to be done. For this reason, research on corrosion is carried out by using a 10% NaCl salt solution by varying the immersion time of stainless steel in corrosive media. From the research results it is known that the type of corrosion that occurs in specimens is the type of uniform corrosion. Likewise with the value of violence will decrease if the stainless steel is soaked longer.

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