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All Journal AUSTENIT The IJICS (International Journal of Informatics and Computer Science) Jurnal Ekonomi International Journal of Research in Vocational Studies (IJRVOCAS)

Wirda Novarika

Universitas Islam Sumatera Utara

Author-ID : 2770438

Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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PENGARUH PARAMETER PROSES RAPID PROTOTYPING DENGAN TEKNOLOGI STEREOLITHOGRAPHY TERHADAP KEKERASAN SPESIMEN UJI Wirda Novarika; Muchtar Ginting; Almadora Anwar Sani; Dicki Astra
AUSTENIT Vol. 11 No. 2 (2019): AUSTENIT 11022019
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Tujuan utama dari penelitian ini adalah untuk mengetahui kekerasan material resin spesimen roda gigi dengan menggunakan prameter berbeda. Pada proses pengujian ini penguji menggunakan alat uji kekerasan Brinnel (HB / BHN), yang menggunakan indentor bola baja ⌀5 mm dan P(Kg) 250 Kg. Hasil dari pengujian ini didapatkan bahwa pengaruh prameter Exposure Time berpengaruh terhadap kekerasan. Teknik pengumpulan data yang dilakukan dengan cara Studi Literatur, observasi dan Konsultasi. Dalam pengolahan data penelitian ini menggunakan metode analisis Statistical Anova.

Design Manufacture of Fixture Fire Fighter Kit Wirda Novarika; Fatahul Arifin; Eka Satria Martomi; Indra Gunawan; Fathur Raihan Perdana
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 3 (2021): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Forest fires are one that needs attention in Indonesia. Due to spent a lot of money to solve this problem. One of the tools to solve this problem is fire fighter, so in case is need to make the fixture can manufacture the fire fighter kit. In this study, we propose the fixture that can be produce the kit. It call fixture fire fighter kit. Autodesk inventor is applied in the simulation design and also it is considering with the ergonomic for the worker especially the Indonesian male. Finally, this tool can be resistant with load 50 kg, the deflection is 0.831 mm, and the maximum von misses stress is 34.12 MPa.

Study Leaf Spring for Punch in Press Tools Ahmad Zamheri; Azharuddin; Wirda Novarika
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 2 No. 1 (2022): IJRVOCAS - April
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v2i1.93

The development of technology in the material sector is currently very fast, it can be seen from the many uses of metal materials, especially in the mass production industry with certain specifications, such as stainless steel, high carbon steel, and tool steel. Home industries such as the manufacture of rings, pans, bottle caps, stove components and others often use these materials as materials to make tools called press tools. In this press tool, high carbon steel or tool steel is mostly used as a punch, but as the cost and difficulty of these materials make home industries suffer big losses for the manufacture of production tools. For this reason, through this study the authors conducted experiments in the laboratory on recycle leaf spring materials. The experiment was carried out in four stages of testing, namely composition test, tensile test, hardness test, and microstructure test. The composition of elements of the recycle leaf spring are 0.6627% Carbon (C), 0.7304% Manganese (Mn), 0.0240% Sulfur (S), 0.0257% Phosphorus (P). The tensile strength of recycle leaf springs is 1332.5 kg/mm2. The hardness is carried out with the Rockwell C hardness test, the result of the test is 52.5 HRC. There are elements of martensitic and austenite in the microstructure test. The results of the laboratory experiments were compared with the data in the literature, so this recycle leaf spring material could be used as a substitute for cutting blades in press tools.

Implementation of Data Mining Using Naïve Bayes Classification Method To Predict Participation of Governor And Vocational Governor Selection In Jemirahan Village, Jabon District Arif Senja Fitrani; Fajrillah Fajrillah; Wirda Novarika
The IJICS (International Journal of Informatics and Computer Science) Vol 3, No 2 (2019): September 2019
Publisher : STMIK Budi Darma

General Election (ELECTION) is an important political event to determine a leader in a democratic country. The General Election (ELECTION) in East Java which was held on 27 June 2018 yesterday was the election of the Governor and Deputy Governor for the 2019-2024 period. There are two pairs of candidates for Governor and Deputy Governor. Through the General Election (ELECTION) then all parties can be accommodated what they want and aspire to so that a better life can be realized. The community is the determining component of the success or failure of an Election. Therefore, in this study the researcher wanted to examine how the electoral participation in Jemirahan Village, Jabon District by using the classification method, the Naïve Bayes algorithm. To predict the participation of the General Election (PEMILU) in Jemirahan Village, Jabon District, it can be done using the Naïve Bayes Algorithm with 6 predefined variables. The results of the prediction of election participation from the dataset taken were 300 data divided by 2, as many as 65% of 195 training data and 35% of 105 data testing.

CALCULATION MANAGEMENT OF PALM KERNEL LOSSES ON FIBER CYCLONE AT PT. HUTA BAYU MARSADA Mahrani Arfah; Wirda Novarika; Suliawati Suliawati
Jurnal Ekonomi Vol. 12 No. 01 (2023): Jurnal Ekonomi, 2023 Periode Januari - Maret
Publisher : SEAN Institute

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

This research was conducted at PT. Huta Bayu Marsada especially on fiber cyclone units. To produce palm kernel products with good quality, the processing process is carried out as efficiently as possible, one of which is by preventing core losses. The problem in this study is to find out the total percentage of losses and the amount of palm kernel losses to the incoming feed on Fiber Cyclone at PT. Huta Bayu Marsada. Sampling was carried out for 6 (six) days from the fiber cyclone unit and analysis was carried out in the laboratory for 4 (four) components, namely fiber, intact core, broken core, and core + shell. Samples were taken as much as + 1000 grams at 13.00 WIB - 15.00 WIB. The sample is cyclone fiber waste and analysis of core losses from cyclone fiber is carried out in the factory laboratory. The results of the study showed losses of palm kernel on fiber cyclone at PT. Huta bayu marsada for 6 consecutive days is 0.835%; 0.823 %; 0.785 %; 0.732 %; 0.862% and 0.894% which are still in accordance with the standards at this factory, namely ≤ 1.02%. The difference in the results of the sample components is due to the different sample sizes. Factors affecting palm kernel losses in the Fiber Cyclone process are caused by fruit maturity, harvest phase and air velocity on the specific gravity of the sample. The largest number of palm kernel losses occurred on the sixth day of 518.4668 kg, this was influenced by the total % LossesThe largest number of palm kernel losses occurred on the sixth day of 518.4668 kg, this was influenced by the total % Losses. The amount of palm kernel loss to incoming feed is getting bigger because of its thin and flat shape which makes it easy to lift up and causes losses to increase.

Co-Authors Ahmad Zamheri Almadora Anwar Sani Arif Senja Fitrani Azharuddin Dicki Astra Eka Satria Martomi Fajrillah Fajrillah Fatahul Arifin Fathur Raihan Perdana Indra Gunawan Mahrani Arfah Muchtar Ginting Suliawati Suliawati

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