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All Journal Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Journal of Energy, Mechanical, Material and Manufacturing Engineering Multitek Indonesia : Jurnal Ilmiah Adimas : Jurnal Pengabdian Kepada Masyarakat KOMPUTEK

Yoyok Winardi

Universitas Muhammadiyah Ponorogo

Author-ID : 2685729

Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Mechanical Engineering Social Sciences

Published : 13 Documents Claim Missing Document

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Articles

Title

PENGARUH HEAT INPUT TERHADAP HASIL KEKUATAN SAMBUNGAN PENGELASAN SMAW PADA MATERIAL STAINLESS STEEL 201 Valla Yuntan Fauzi Romdhoni; Fadelan Fadelan; Yoyok Winardi
KOMPUTEK Vol 3, No 2 (2019): Oktober
Publisher : Universitas Muhammadiyah Ponorogo

This research aims to know the strength of the connection as well as welding heat input current in connection with welding method using the method exsperimen. This research using a variation on the current 40 A, 50 A and the A 60 with material using SMAW welding technique of stainless steel 201. The results obtained from the test data and test pull rockwel violence showed the presence of the influence of the use of violence against the current and voltage drop of the welding connection. The larger the flow used will be the bigger value is also violence and its voltage, but at 60 A stream of violence and its voltage decline. Rockwell hardness test results for the area of las who have the highest violence are contained in the current 50 A of 73.60 HRB and the lowest at 40 A with flow of 63.6 HRB. As for the pull-test results with the flow that gets the results of voltage drop on average the highest found in the current 50 A of 0.711 kN/mm 2 and to pull the average voltage low current is present on 60 A of 0.5199 kN/mm2.

PENGARUH VARIASI PANJANG PEGAS KOPLING TERHADAP PERFORMA DAN KONSUMSI BAHAN BAKAR PADA HONDA TIGER 200 CC Panji Laksono Adji; Kuntang Winangun; Yoyok Winardi
KOMPUTEK Vol 5, No 1 (2021): April
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/jkt.v5i1.681

Good acceleration and performance are influenced by the degree of flexibility of the clutch springs. The objective that underlies the implementation of this study is to determine the effect of replacing the clutch spring with different length variations. In this study, the data taken is the torque, power and fuel consumption of each type of clutch spring. In this test, two types of clutch springs were used, namely the standard clutch spring and the TDR type coupling spring which were varied in length (38.31mm), (40.93mm) with the addition of 2mm (42.93mm), (40.31mm) rings. also cutting thread 2mm (38.93mm), (36.31mm). Tests were carried out using a dynotest tool with an engine speed of 4000 rpm to 9000 rpm transmission position six. In the TDR clutch spring (42.93mm) there is an increase in torque of 7.42% with a torque yield of 16.20 Nm at 6000 rpm and an increase in power of 6.61% with a power yield of 14.5 HP at 7000 rpm. For fuel consumption TDR coupling spring at ideal rotation (low-medium), an increase of 9.68%. The decrease in fuel consumption only occurred at the top / high speed of 6.32%. For the test results pertalite ethanol fuel, there is a decrease in fuel consumption compared to pertalite fuel for all RPM variables

PENGARUH MATERIAL ELEMEN BARA API TERHADAP EFISIENSI KOMPOR LPG Aji Prima Wicaksono; Sudarno Sudarno; Yoyok Winardi
KOMPUTEK Vol 2, No 2 (2018): Oktober
Publisher : Universitas Muhammadiyah Ponorogo

Gas alam adalah sumber daya Alam yang tidak dapat diperbarui. Salah satu upaya untuk sedikit menghemat gas alam adalah dengan pengoptimalan pemanfaatan panas yang dihasilkan oleh kompor LPG. Rekayasa kontruksi dan penemuan hasil penelitian telah banyak dilakukan untuk meningkatkan efisiensi kompor LPG tersebut. Pemasangan elemen bara api dengan variasi material bertujuan untuk mengetahui material jenis apa yang dapat memberikan radiasi panas terbaik. Untuk mengetahui hal tersebut dilakukan pengujian pengaruh material elemen bara api terhadap peningkatan efisiensi kompor gas yang dikemas dalam model penelitian eksperimental. Pengujian dilakukan dengan metode air mendidih (boilling water method), dengan memasang elemen dengan material kawat nikelin, kawat kanthal dan kawat nicrom pada kompor LPG. Dari hasil penelitian yang dilakukan terdapat indikasi peningkatan efisiensi pada semua jenis material elemen, namun nilai peningkatan efisiensi tertinggi terdapat pada material kawat kanthal yaitu sebesar 55,57% meningkat 3.86% dibandingkan dengan tanpa menggunakan elemen bara api yang besarnya adalah 51,47 %.

PENGARUH REKONSTRUKSI PROFIL CAMSHAFT MESIN ASTRO 108 CC TERHADAP TORSI DAN DAYA Nur Priyanto; Fadelan Fadelan; Yoyok Winardi
KOMPUTEK Vol 5, No 2 (2021): Oktober
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/jkt.v5i2.821

Nowadays motorcycle is the most used transportation in Indonesia and in overseas. Sometime the engine performance that is used by the rider is not maximal with the standard. Some sectors are re-modified to increase motorcycle’s engine performance. One o part that is modified is Camshaft to change the height of valve lift. The research purpose is to acknowledge the impact of the height of valve lift, power and torque. From the experiment of dynotest can be known that standard camshaft produces maximum power about 6,9 N.m at speed 4916 Rpm and the maximum torque is 7,76N.m at speed 7969 Rpm. The modified camshaft 1 produces power about 7,9 HP at speed 8481 Rpm and maximum torque is 7,28 N.m at speed 6844 Rpm. The modified Camshaft 2 produces power about 8,1 HP at speed 8538 Rpm and the maximum torque is about 7,29 N.m at speed 6973 Rpm. The power of modified camshaft 3 is about 8,4HP at speed 8872 rpm and the torque is about 7,23 N.m at 7085 rpm. The best power is on modified camshaft 3 with 8,4 HP and the best torque is in Standard Camshaft with 7,76 N.m.

PENGARUH KUAT ARUS TIG WELDING PADA MATERIAL SUS 304 TERHADAP KEKUATAN TARIK DAN STRUKTUR MIKRO Wahyu Aditya Rohman; Rizal Arifin; Yoyok Winardi
KOMPUTEK Vol 5, No 2 (2021): Oktober
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/jkt.v5i2.822

GTAW welding (gas tungsten arc welding) or commonly called TIG (tungsten inert gas) welding is welding using a flame arc produced by a fixed electrode made of tungsten. One thing that needs to be considered in welding (especially in TIG welding) is the effect of welding amperage on the mechanical properties or strength of the welded joint. PeThe tests carried out in this study were tensile tests and micro tests. Tensile tests were carried out with the aim of knowing the tensile strength of the test specimens. And the micro test is carried out aiming to see the microstructure that occurs in the weld area (HAZ). Data analysis was carried out by looking at the relationship of tensile stress, yield stress, and strain that occurred in the test specimen based on variations or parameters used during welding. Based on the analysis of the mechanical properties and microstructure of thematerial stainless steel sus 304 musing TIG welding (Tungsten Inert Gas)with a current variation of 80 A, 100 A and 120 A showed a difference that caused a comparison of the difference in the tensile strength. Welding using a current of 80 A has the highest average stress of 316.6 kN/mm2, welding using a current of 100 A has a tensile strength of 378.6 kN/mm2. While welding using a current of 120 A has the highest tensile strength of 458.3 kN/mm2. The results of this test indicate that the analysis of the mechanical properties and microstructure of TIG welding (Tungsten Inert Gas) shows a significant effect of tensile strength at a current of 120 A, so it has the highest tensile strength with an average value of 458.3 kN/mm2

MODIFIKASI MESIN PEMOTONG RUMPUT MENJADI MESIN TRACTOR PORTABLE Indra Lesmana; Fadelan Fadelan; Yoyok Winardi
KOMPUTEK Vol 6, No 1 (2022): April
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/jkt.v6i1.1139

Indonesia is a potential area for producing food such as rice, fruit and vegetables. However, in the process of processing land, the community still uses manual methods so that it takes a long time. This study aims to increase the efficiency and effectiveness of farmers in cultivating land so that farmers can maximize their work. This research resulted in a portable tractor that can be used to cultivate land in loose soil which is usually the land that is often chosen by farmers to grow various kinds of vegetables. This portable tractor uses a 2 stroke lawn mower, blades and a frame made of 20 mm iron pipe. Researchers have tested portable tractors in the field. From the testing process, it shows that the portable tractor machine is able to cultivate 19.5 m2 of loose soil with a depth of 10 cm within 1 hour of testing, so it can be concluded that the use of portable tractors is more effective and efficient than manual land cultivation.

PENGARUH VARIASI GAS PELINDUNG PADA TIG BRAZING ANTARA CEMENTED CARBIDE DAN BAJA KARBON TERHADAP KEKUATAN GESER DAN STRUKTUR MIKRO Muhammad Choirul Faizin; Yoyok Winardi; Nanang Suffiadi Ahmad
KOMPUTEK Vol 6, No 2 (2022): Oktober
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/jkt.v6i2.1478

Dissimilar metals have found wide use in electric power generation, electronics, reactors, nuclear, petrochemical, chemical industries, civil construction, vessels, and heat exchange as well as several other industries. TIG welding (Tungsten Inert Gas Welding) is a type of electric welding that uses tungsten as the electrode material that is not consumed. Brazing is a way of joining metal materials through a heating process with an adhesive or filler material that has a melting point below the material to be combined or connected. The main objective of this study was to determine the shear strength and microstructure of the weld area that was joined by the brazing method. From the results of the shear strength test, there is a comparison of the difference in the shear stress strength. The results obtained indicate that where the shear stress test at a flow rate of 5 liters/minute of protective gas gets the highest shear stress value of 108 N/mm2, compared to the shear stress test with a gas flow rate of 10 liters/minute, the shear stress value is equal to 97 N/mm2, but at the protective gas flow rate of 15 liters/minute the lowest shear stress value was 76 N/mm2. The results of the microstructure obtained the result that the protective gas flow rate of 15 liters/minute got the lowest value due to a decrease in the amount of Si elements, resulting in the lowest shear stress value.

PENGARUH PENDINGIN AIR DAN ES TERHADAP HASIL PIROLISIS MINAK PLASTIK Bakhtiar Permana Putra; Wawan Trisnadi Putra; Fadelan Fadelan; Sudarno Sudarno; Yoyok Winardi
KOMPUTEK Vol 6, No 2 (2022): Oktober
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/jkt.v6i2.1477

Plastic waste is a trend that continues to increase along with economic growth and an increase in population. Millions of tons of plastic are produced annually from low to large scale. One way to reduce plastic waste is to use the pyrolysis process. Condenser performance is influenced by several things, including condenser design. The condenser design used in this pyrolysis device is a water and ice-cooled condenser with a spiral type. The results of the pyrolysis process are then analyzed by observing the experiment directly then concluding and determining the results of the experiments that have been carried out in the form of tables and graphs to obtain comparisons. What was observed in this experiment was the effect of water and ice cooling media on the amount of plastic oil produced. Pyrolysis experiments with ice cube coolers get more plastic oil results. For the first experiment using 1000 gr PP plastic using plain water cooler, in a combustion time of 180 minutes and a reactor temperature of 2500ºC, we get 130 ml of plastic oil. The second experiment used 1000 gr PP plastic with ordinary water as a coolant mixed with ice cubes in a burning time of 180 minutes and a reactor temperature of 250ºC to get 340 ml of plastic oil. The third experiment used 1000 gr PP plastic with ice cubes as a cooler for 180 minutes of combustion and a reactor temperature of 250ºC to get 600 ml of plastic oil.

Pengaruh Jumlah Lubang Injektor Terhadap Performa Motor Yamaha New Vixion 150 CC Handika Adi Pratama; Yoyok Winardi; Kuntang Winangun
KOMPUTEK Vol 7, No 1 (2023): April
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/jkt.v7i1.2049

For now the development of EFI (Electronic Fuel Injection) motorcycle engines for motorcycle engines to improve engine performance. The injector functions as a fuel sprayer inlet (intake manifold). This research was conducted to determine the effect of the number of injector holes on engine performance. The research method used was an experimental method carried out in the laboratory and using a Yamaha New Vixion 150 cc motorcycle with Pertalite fuel and using 4 hole, 6 hole and 10 hole injectors to determine the effect on its performance. This study used a Dynamometer (Dynotest) to determine the results of torque, power and the Cartec CET 210 series tool to determine the results of exhaust emissions and a measuring cup to determine the results of fuel consumption. The results showed that the maximum torque indicated on the 6-hole injector was 14.18 Nm compared to the 4-hole 13.36 Nm and 10-hole 5.83 Nm. The maximum power on the 6 hole injector is 15.18 HP compared to 4 holes 14.38 HP and 10 holes 4.80 HP. The best exhaust emissions from the 6-hole injector are CO2 12.7%, O2 6.53%, HC 428 ppm. Fuel consumption 4 holes 18.2 ml/minute, 6 holes 24.2 ml/minute, 10 holes 39.7 ml/minute. From the research it can be concluded that the 6-hole injector is a good size for the performance of the 150 cc Yamaha New Vixion motorbike.

Co-Authors Aji Prima Wicaksono Arifin, Rizal Bakhtiar Permana Putra Didik Riyanto Fadelan Fadelan Handika Adi Pratama Indra Lesmana Kuntang Winangun Mohammad Muhsin Muhammad Choirul Faizin Munaji Munaji Nanang Suffiadi Ahmad Nanang Sufiadi Ahmad Nur Priyanto Panji Laksono Adji Sudarno, Sudarno Valla Yuntan Fauzi Romdhoni Wahyu Aditya Rohman Wawan Trisnadi Putra

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