Garuda - Garba Rujukan Digital

PENGARUH VARIASI MATRAS KARET TERHADAP KERATAAN PERMUKAAN PELAT PADA ALAT CEKAM VACUUM CLAMPING Karnova Yanel; Herianto Herianto; R. Rachmat A Sriwijaya
Jurnal Momentum ISSN 1693-752X Vol 19, No 2 (2017): Volume 19 No. 2 Agustus 2017
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar

Sebuah mesin milling digunakan dalam proses permesinan untuk pekerjaan pemakanan permukaan, sisi, dan pemotongan material dengan profil tertentu (Rochim, 1993). Alat bantu cekam vacuum clamp yang dipilih dapat digunakan untuk memotong profil yang berbeda-beda. Agar benda kerja tercekam dengan sempurna maka permukaan alat cekam dilapisi dengan matras karet sebagai perapat.Tujuan dari penelitian ini untuk melihat pengaruh matras karet terhadap kerataan permukaan pelat yang dicekam menggunakan vacuum clamping. Spesifikasi vacuum clamping yang digunakan adalah 280 mm x 180 mm x 35 mm (p x l x t) dengan area cekam 200 mm x 150 mm (p x l), lubang diameter 3 mm, jarak antar lubang 5 mm yang berfungsi sebagai tempat benda kerja dicekam (dengan alas matras karet). Pompa vacuum menggunakan spesifikasi rotary vane vacuum pump, daya 1/3 hp atau 0,25 kW. Alas matras karet menggunakan matras karet yang banyak dijumpai di pasaran dengan ketebalan 1,7 mm dan 3,5 mm.Tekanan hisap yang digunakan -24 InchHg(Yanel, 2016). Proses pengukuran menggunakan dial indicator yang dipasangkan pada alat ukur ketinggian pada meja kerataan.Dari penelitian yang dilakukan dapat dilihat bahwa perbedaan ketinggian permukaan pelat yang dicekam menggunakan vacuum clamping untuk matras karet 3,5 mm adalah 0,9 mm sedangkan untuk matras karet 1,7 mm adalah 0,56 mm.Keyword: Vacuum Clamping, Active Clamping, Milling Fixture.

Effect of Oil on the Electrodes of the Low-Carbon Steel Welding Using DCSP Polarity in Terms of Microstructure Hafni Hafni; Karnova Yanel
Jurnal Teknik Mesin (JTM) Vol 8, No 1 (2018)
Publisher : LP2M - Institut Teknologi Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (833.802 KB)

The flaws or failures that occur in the welding results can be caused by many things, one caused by the quality of the electrode. The quality of the electrode may be affected by moisture caused by water or oil, thereby damaging the flux lining the electrode. To know how big influence of oil on electrode to result of welding of low carbon steel hence conducted a research by using oil as element of elektrodanya moisturizer. The humidity of the electrode is carried out by immersing the electrodes into the SAE 40 oil oil until it reaches the absorption of 5% by weight of the electrode. Welding process is then performed on low carbon steel plate with DCSP polarity.The result of welding is metallographic testing to observe macrostructure and microstructure of welding area and base metal. From the test results obtained that the moisture of electrodes by oil cause defects in the weld metal region on the low carbon steel welding results.

Design of Coconut Paring Machine Karnova Yanel
Jurnal Teknik Mesin (JTM) Vol 8, No 1 (2018)
Publisher : LP2M - Institut Teknologi Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (906.93 KB)

Coconut plant is a very useful natural resource for human life. One of the benefits of coconut plant is coconut is a raw material that can be processed fresh drinks. In general, the process of peeling coconut still using the manual process so it takes a lot of energy, a long time, and a sharp tool to peel the coconut, to overcome this need a design of a more efficient young coconut peeler, this machine is designed using cheaper materials so that can be reached by all people especially who have business of coconut sales. Coconut peeler is a working principle of rotary system, the coconut to be peeled is placed on top made specifically for the coconut holder and to ensure the coconut does not fall during peeling process, the coconut is retained using a lever that serves as a lock. The driving force used is the electric motor, power on the electric motor will be forwarded from the pully motor rotation through v-belt to the pulley driven. From this research has been obtained model of machine design to peel coconut coir, coconut coir peel machine which is designed can peel coconut husk within 2 minutes for 1 coconut, with the highest efficiency value which is worth 93.5%

Modification of Hand Molding Flower Vase for Thermo Plastic Recycling Karnova Yanel
Jurnal Teknik Mesin Vol 11 No 1 (2021): Jurnal Teknik Mesin Vol.11 No.1 April 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Broadly speaking, plastics can be grouped into two groups, namely: thermoplast plastics and thermoset plastics. Thermoplast plastics are plastics that can be repeatedly printed in the presence of heat. Thermoplast plastics include: PE (Polyethilene), PP (Polypropylene), PS (Polystirene), ABS (Abutile Butadine Styrene), Nylon, PET (Polyethilene Terephthalete), POM (Polyacetal), PC (Polycarbonate) etc. Meanwhile, thermoset plastic is plastic which, if it has undergone certain conditions, cannot be reprinted because the polymer structure is in the form of a three-dimensional network. In making flower vases using hand molding tools, there are still shortcomings, such as during the melting process of plastic material, the heat given by the oil stove has not yet maximally spread the heat to the mold which causes the results to be not optimal. Besides, the heat given by the oil stove is not yet known by the operator. , because in the manufacture of flower vases have not used a controller to determine the temperature in the hand molding tool, the old mold results in the cylinder cannot be used for tensile testing. Therefore it is necessary to modify the hand molding tool. Based on the results of testing the tools that have been done, the following conclusions can be drawn: The product has a height of 16 cm, a thickness of 4 mm, a hand-molding tool can be a solution for reducing waste in the environment, plastic can be formed into a product that is valuable by processing it according to the temperature.

Design of Coconut Paring Machine Karnova Yanel
Jurnal Teknik Mesin Vol 8 No 1 (2018): Jurnal Teknik Mesin Vol.8 No.1 April 2018
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2018.v8.i1.39-44

Coconut plant is a very useful natural resource for human life. One of the benefits of coconut plant is coconut is a raw material that can be processed fresh drinks. In general, the process of peeling coconut still using the manual process so it takes a lot of energy, a long time, and a sharp tool to peel the coconut, to overcome this need a design of a more efficient young coconut peeler, this machine is designed using cheaper materials so that can be reached by all people especially who have business of coconut sales. Coconut peeler is a working principle of rotary system, the coconut to be peeled is placed on top made specifically for the coconut holder and to ensure the coconut does not fall during peeling process, the coconut is retained using a lever that serves as a lock. The driving force used is the electric motor, power on the electric motor will be forwarded from the pully motor rotation through v-belt to the pulley driven. From this research has been obtained model of machine design to peel coconut coir, coconut coir peel machine which is designed can peel coconut husk within 2 minutes for 1 coconut, with the highest efficiency value which is worth 93.5%.

Failure Analysis of a Heat Exchanger 212-E9 Dedi Wardianto; Karnova Yanel; Asmara Yanto
Jurnal Teknik Mesin Vol 11 No 2 (2021): Jurnal Teknik Mesin Vol.11 No.2 October 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2021.v11.i2.124-131

Heat Exchanger 212-E9 is one part of the working fluid Debutanizer unit with seawater on inner tubes and H2S on the outside of the tubes. These tubes have failed in the form of leakage. Here the analysis of leakage and the remaining life of the tubes are based on data from the inspection and analysis of general corrosion of the tubes. Part inlet tube erosion-corrosion as well as there are some leaks in the tubes. From the results of inspections in the field, erosion-corrosion of the inlet tube caused by the flow of seawater on the inlet tube containing a solution/coarse material. While the leakage that occurs in tubes due to the H2S concentration is too high, which is equal to 2 mol % H2S. In fact, the recommended H2S concentration is 0.32 mol % H2S. The high level of concentration of H2S is not suitable with the level of material resistance tubes. In the analysis of remaining life obtained maximum corrosion rate in the tubes of 0.2372 mm/year. With the usage time now is 6 year obtained remaining life of 2.5 year again. Referring to the results of the analysis of leakage and remaining life on the tubes is recommended that a filtering of the seawater before entering into the tubes and provide tubes protector on the inlet tube so that tubes are protected from erosion-corrosion, and which is necessary to regulate the level of concentration of H2S Heat Exchanger flowing at the recommended standards.

Design and Manufacturing of Wind Tunnel for Turbine Impeller Airfoil Testing Karnova Yanel; Asmara Yanto
Jurnal Teknik Mesin Vol 12 No 2 (2022): Jurnal Teknik Mesin Vol.12 No.2 October 2022
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2022.v12.i2.124-130

In this study, the design of a wind tunnel was carried out to observe airflow through an airfoil, streamlines and turbine blades. To accommodate this, in this study a design was made of an open return wind tunnel. In this case, an open circuit wind tunnel type will be made because the construction is simpler and the manufacturing costs are relatively cheaper compared to the closed circuit wind tunnel type. The Wind Tunnel is designed with Open CLosed Wind Tunnel (OCWT) type. The OCWT is designed to consist of fan and housing, diffuser, test section, contraction, honeycomb. The OCWT design uses an operating fan to circulate air into the test section. The maximum air speed in the Test Section is 5 m/s with a flow that is closed to laminar. The recommended diffuser has a dimension of 50 cm on the side that is attached to the test section and 52 cm on the side facing the fan with an inclination angle of 1.79o. The driver uses a 16 inch exhaust fan with a power of 74 W to make the flow in the Test Section stable at a speed of 2 m/s.

PROTOTYPE OF ARDUINO-BASED WATER LEVEL DETECTOR WITH ULTRASONIC SENSOR Karnova Yanel
Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer Vol 3 No 1 (2023): Maret, Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer
Publisher : Sekolah Tinggi Ilmu Ekonomi Trianandra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/juritek.v3i1.1329

Most of the water can be found in the sea (salt water) and in the ice caps (at the poles and on the tops of mountains). Apart from that, water can also be found in clouds, rain, rivers, surface fresh water, lakes, water vapor, and sea ice. The water in these objects moves according to a water cycle, namely: through evaporation, rain, and the flow of water over the ground surface (runoff, including springs, rivers, estuaries) towards the sea. Floods are natural disaster events that occur when an excessive flow of water submerges land. Floods can occur within minutes or over a long period of time, and can last days, weeks, or longer. Floods are the most common and widespread of all weather-related natural disasters. The tool can function properly. The height can be set to be displayed with an LED light display. Can be applied to the floodgates to activate the motor driving the floodgates so that the water level through the floodgates can be adjusted in such a way.

PROTOTYPE SOLAR TRACKER BERBASIS ARDUINO Karnova Yanel; Rozi Saferi
Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer Vol 3 No 2 (2023): Juli
Publisher : Sekolah Tinggi Ilmu Ekonomi Trianandra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/juritek.v3i2.1897

Solar radiation is the light â€“ also known as electromagnetic radiation â€“ that is emitted by the sun. The enormous amount of energy generated from sunlight makes solar cells a very promising alternative energy source for the future. Solar cells also have the advantage of being a practical energy source considering they do not require transmission because they can be installed in a modular manner at any location where they are needed. Various technologies have been developed in the process of making solar cells to reduce production costs to make them more economical. The aim of this research has been achieved, namely to design an Arduino-based solar tracking system, so that by using a solar tracker solar energy can be absorbed and produced more optimally than without using a solar tracker. This is proven based on the results of the Black box test. As for the results of testing the system in a black box, the result is that solar panels can move to follow the sunlight and produce maximum energy. So that this tool can be applied to all regions and can assist the government in efforts to overcome energy problems, especially optimizing alternative energy.

Title

Found 9 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 9 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 9 Documents
Search