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All Journal Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Logic : Jurnal Rancang Bangun dan Teknologi Madaniya JAMETECH Logic : Jurnal Rancang Bangun Dan Teknologi

I Wayan Suma Wibawa

Politeknik Negeri Bali

Author-ID : 3713234

Religion Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mechanical Engineering Transportation

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Articles

Uji Variasi Tekanan Nosel Terhadap Karakteristik Semprotan Bahan Bakar Biodiesel I Wayan Suma Wibawa; I Gusti Bagus Wijaya Kusuma; I Nyoman Budiarsa
Jurnal Mettek: Jurnal Ilmiah Nasional dalam Bidang Ilmu Teknik Mesin Vol 1 No 2 (2015)
Publisher : Program Studi Magister Teknik Mesin Universitas Udayana

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

In the middle of the thinness of the availability of fossil fuels, making researchers from various countries are aggressively seeking alternative energy sources that can be renewed, one of which is biodiesel from callophyluminophylum. Callophyluminophylum use of biodiesel in diesel engines still experiencing problems, due to the viscosity and density higher than petroleum diesel it results in the performance of the diesel engine is not optimal. One solution to overcome the above problems is to put more pressure on the injector so that the spray is more subtle, then tested the effect of pressure injector / nozzle of the spray characteristics. The variations in the pressure nozzle 90 bar, 100 bar, 110 bar, 120 bar and 130 bar (range working pressure nozzle from the factory) using petroleum diesel (100%), callophyluminophylum biodiesel 100% and callophyluminophylum biodiesel 5% + petroleum diesel 95 %. Fuel spray characteristics test in the penetration of the spray tip length (L), spray rate (v or Uin), spray angle (?), and distribution of large granules are formed on each - each variation of pressure. From the testing that was done then get the following, at a pressure of 120 bar nozzle BD 5% has characteristics that most closely D 100% (petroleum diesel) both of the speed of the spray, spray angle and the amount of the grain. Key words: Pressure nozzle, the length of the spray, spray time, spray angle, the distribution of grain.

Protection on Nozel Maintenance, Isuzu Panther Machine Early Generation I Wayan Suma Wibawa; I Gusti Bagus Wijaya Kusuma
Logic : Jurnal Rancang Bangun dan Teknologi Vol 20 No 2 (2020): July
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/logic.v20i2.1894

Even though it is old, the existence and existence of Isuzu Panther cars in the 90s are still widely used, this is because in addition to the well-known / tested engine stubborn but also fuel efficient. To maintain the condition of the engine to stay fit, vehicle owners must pay attention to the maintenance of their cars regularly. One engine component that is vital and must receive special care is the Nozzle. The treatment of the nozzle is physical condition checking, cleaning and proper testing. This test is done by giving pressurized fuel to the nozzle, then we observe and analyze how the character of the spray. Testing pressure variations of 90 bar, 100 bar, 110 bar, 120 bar, and 130 bar (range of nozzle working pressure from the factory) using diesel, The characteristics of the fuel spray tested are the length of the spray penetration tip (L), speed spray (v or Uin), spray angle (Ɵ), and large distribution of granules formed at each pressure variation. From the test it is known, at 110 bar testing pressure has the best characteristics, both in terms of spray and the number of grains.

Perancangan mekanisme rel torch plasma cutting 1 (satu) Axis I Wayan Suma Wibawa; I Komang Kantun; I Ketut Suherman; Risa Nurin Baiti; I Wayan Suirya
Journal of Applied Mechanical Engineering and Green Technology Vol. 3 No. 1 (2022): March 2022
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Plasma cutting is a method of cutting metal, especially steel, with relatively low cost and effectiveness, with satisfactory results. Where in the cut, it is enough to need a plasma cutting machine/inverter that is quite affordable, widely available in the market, and simple tools, an air compressor (no special oxygen/gas needed as in gas/oxygen and acetylene/LPG cutting), a power source, the material being cut and the cutting process can be carried out. How to use plasma cutting is relatively easy, namely by setting the machine and then directing the plasma torch to the cutting plane as needed by maintaining a stable movement and height. However, when we make repeated cuts, our concentration and physical strength will automatically decrease, so we need a tool that can help us direct/adjust the plasma torch, which is called a plasma cutting mechanism. After paying attention to these needs, a plasma cutting mechanism was designed with a working space/cutting length of 1200 mm, with a tool size of 1400 mm x 300mm x 200 mm length, width and height, estimated cost of Rp. 3,050,000,-, with a cutting speed setting of 100 mm/minute to 1000 mm/minute, a cutting height of 0 to 10 mm with an angle of 0 degree to 90 degree.

Experimental Study of the Effect of Plasma Cutting on the Tensile Strength of Materials "Fe" I Wayan Suma Wibawa; I Ketut Suherman
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 21 No. 3 (2021): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

The cutting process in plasma cutting begins with the formation of a pilot arc between the electrode and the workpiece as a result of the electrical ionization reaction of the highly conductive cutting gas. The gas is heated by the pilot arc until its temperature rises very high then the gas will be ionized and become a conductor of electricity. When the gas stream leaves the nozzle, the gas expands rapidly carrying the molten metal so that the cutting process continues. This plasma temperature can reach 33,000°C, approximately 10 times the temperature produced by the reaction of oxygen and acetylene. If this is related to the mechanical properties of the material, where the material has been heated it will result in changes in the mechanical properties of the material in the heating area/around the cutting plane. Tensile testing is the most widely used type of test because it is able to provide representative information on the mechanical behavior of the material. Seeing an incident like this, it is necessary to test the Effect of Plasma Cutting on the Tensile Strength of 'Fe' Materials through a tensile test. Several studies have shown that torch height, amperage and cutting speed can affect material properties. The best tool parameter settings are obtained at a travel speed of 500 mm/min, 75 amperes and a torch-material distance of 3 mm so that these settings are used as a reference in this study. In analyzing the data, the authors compare the results of plasma cutting testing with conventional cutting, in order to know the changes in mechanical properties that occur.

DESIGN AND BUILD OF 1 (ONE) AXIS PLASMA CUTTING MECHANISM I Wayan Suma Wibawa
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 2 (2022): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Plasma cutting is a cutting process that is widely used by the metal industry and individuals. Plasma cutting is widely used because it has many advantages, including: Cheap tools and widely sold in the market, low operating costs because they use electric power and compressed air from a compressor, unlike oxyacetylene cutting which requires oxygen, the available tools are more flexible and easy moved. The use of plasma cutting is relatively easy, by setting the machine and then directing the plasma torch to the cutting plane as needed by maintaining a stable movement and height. However, when we are going to make repeated cuts, our concentration and physical power will automatically decrease, so we need a tool that can assist us in directing/regulating the plasma in which the tool functions as a plasma cutting mechanism. Based on this background, the author made a 1 axis plasma cutting torch rail mechanism which is driven by an electric motor, this tool has a workspace/cutting length of 1300 mm, with tool sizes Length, width and height 1950 mm x 300mm x 100 mm. This mechanism/tool can be installed on torches of several brands of plasma cutting, with various bracket speeds that can be adjusted as needed depending on the thickness of the plate being cut, from cutting speeds of 300 mm/minute to 2,000 mm/minute, adjustable cutting height 0 mm up to 10 mm, with a cutting angle setting of 0o to 90o and this mechanism tool can also be used portable / can be moved according to the required work location. Plasma cutting mechanism can be used to make it easier to make straight/horizontal cuts.

Revitalisasi Sistem Penerangan Jalan Instalasi Lampu Penerangan Jalan Tenaga Surya Untuk Pemberdayaan Kegiatan Masyarakat Banjar Jeroan Patemon Singaraja I Made Anom Adiaksa; I Wayan Suastawa; I Wayan Suma Wibawa; Made Ardikosa Satrya Wibawa
Madaniya Vol. 4 No. 3 (2023)
Publisher : Pusat Studi Bahasa dan Publikasi Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53696/27214834.497

Instalasi lampu penerangan jalan tenaga surya merupakan solusi energi terbarukan yang tepat untuk memenuhi kebutuhan penerangan di daerah yang jangkauan jaringan listriknya masih sedikit. Salah satu daerah tersebut adalah Banjar Jeroan Patemon Singaraja. Penerangan jalan yang buruk di daerah ini mengakibatkan kurangnya kenyamanan dalam berkegiatan khususnya di sore hari menjelang malam. Oleh karena itu, penggunaan lampu penerangan jalan tenaga surya sangat penting untuk meningkatkan keamanan dan kenyamanan masyarakat. Pengabdian ini bertujuan untuk mengimplementasikan instalasi lampu penerangan jalan tenaga surya di Banjar Jeroan Patemon Singaraja. Pengabdian ini dilakukan melalui tahapan-tahapan yaitu survey lokasi, perhitungan beban lampu, pemilihan komponen sistem, dan instalasi. Pengabdian ini diharapkan dapat memberikan instalasi lampu penerangan jalan tenaga surya di Banjar Jeroan Patemon Singaraja sehingga memberikan penerangan yang cukup untuk jalan dan sekitarnya dengan waktu penerangan yang cukup lama. Dari sisi ekonomi, instalasi lampu penerangan jalan tenaga surya lebih hemat biaya dibandingkan dengan instalasi listrik konvensional. Selain itu, penggunaan energi terbarukan ini juga lebih ramah lingkungan dan berkelanjutan. Kedepannya, dengan adanya instalasi lampu penerangan jalan tenaga surya di Banjar Jeroan Patemon Singaraja, masyarakat dapat lebih nyaman dan aman ketika beraktivitas di malam hari. Penggunaan energi terbarukan ini juga dapat meningkatkan kesejahteraan masyarakat dan memberikan contoh yang baik dalam upaya pelestarian lingkungan.

The Effectiveness of Using Continuous Variable Transmission (CVT) in 2WD Buggy Vehicles I Putu Darmawa; I Made Anom Adiaksa; Ida Bagus Puspa Indra; I Wayan Suma Wibawa
invotek Vol 23 No 1 (2023): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v23i1.1109

Continuous Variable Transmission (CVT) is a transmission system that does not have gears like in manual transmission cars or conventional automatic transmission cars. CVT has the advantage of being able to maintain the proper rotational speed at any time in terms of engine efficiency by changing the speed ratio flexibly and continuously. A continuously variable transmission (CVT) is a transmission that can change steplessly through an infinite effective gear ratio between maximum and minimum. This is in contrast to other mechanical transmissions which only allow a few different gear ratios to choose. The flexibility of the CVT allows the drive shaft to maintain a constant angular speed over the output speed range. Torque is transmitted from the drive to the pulley which is driven by friction acting between the belt and pulley surfaces. Tests were carried out using a dynotest to obtain wheel rotation data and the resulting torque. The loading is given from 3 kg, 5 kg, 7 kg and 8 kg, the engine rpm used is 5500 rpm, 6000 rpm, 6500 rpm, 7000 rpm and 8000 rpm. Rear wheel rotation is inversely proportional to the load, the greater the load the rotation will decrease. Load is directly proportional to torque, the greater the load given the torque will increase. The CVT system is still effective for use as a power successor. The power that can be transmitted is still greater than 50%, namely 68%.

Co-Authors I Gusti Bagus Wijaya Kusuma I Ketut Suherman I Ketut Suherman I Komang Kantun I Made Anom Adiaksa I Nyoman Budiarsa . I Putu Darmawa I Wayan Suastawa I Wayan Suirya Ida Bagus Puspa Indra Made Ardikosa Satrya Wibawa Risa Nurin Baiti

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