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All Journal Scientific Journal of Informatics Strength : Jurnal Penelitian Teknik Mesin
Wahyu Adi Kurniawan
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Computer Science & IT Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Sistem Pendukung Keputusan Pencarian Universitas di Malang Menggunakan Weight Product dengan Pembobotan Weighted Sum Model Wahyu Adi Kurniawan
Jurnal Ilmiah Informatika Vol. 4 No. 2 (2019): Jurnal Imliah Informatika
Publisher : Department of Science and Technology Ibrahimy University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35316/jimi.v4i2.554

Abstract

Decision Support System (DSS) is a system that can help someone in making a decision to solve a problem. Weighted Sum Model (WSM) method and Weighted Product (WP) method are used in this system. The WSM method is the sum of the attribute rating multiplications with attribute weights. In this system, WSM method is used as a weight and will be used on the WP method. This weight is filled manually by the user and then calculated by the WSM method. Whereas the Weighted Product (WP) method is a method that uses multiplication to connect attribute ratings, and the rating must be raised first with the weight of the attribute. This system is used in the selection of college in the city of Malang. In the search process there are several criteria used, namely the number of computer department, tuition fees, campus environment, the number of scholarship programs and accreditation. These criteria are used as a reference for college grades used in the assessment section. The search procedure start when a user enters a criteria value that has been determined by the user. Furthermore, the value of the calculation is compared with the value already on data pattern. To find out whether the chosen university matches with the entered criteria, weight of criteria must be checked based on the university chosen by the user. The conversion value from input are compared by the value in the pattern data. The testing process in this study is by using a confusion matrix. Based on testing using the method confusion matrix, researchers obtained 72.50 % value of accuracy, 82,76% value of precision, 80% value of recall and 81,36% value of f-measure.
PERANCANGAN KNALPOT VALVETRONIC KENDARAAN RODA DUA DENGAN SIMULASI FINITE ELEMENT ANALYSIS (FEA) DAN PENGUJIAN KEBISINGAN Munzir Qadri; Ardhian Mahendar; Wahyu Adi Kurniawan; Ahmad Sofyan,; Aprizal Maulana
Strength : Jurnal Penelitian Teknik Mesin Vol. 2 No. 1 (2025): April 2025
Publisher : Universitas Pamulang Serang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/strg.v2i1.44976

Abstract

Banyak pengendara roda dua di kota-kota besar yang senang mengganti knalpot standard kendaraannya dengan knalpot racing. Namun faktanya, umumnya knalpot racing memiliki beberapa masalah seperti terbatasnya kinerja pada rentang RPM tertentu, dan kebisingan suara yang cenderung melampaui batas yang diizinkan pemerintah yaitu 80-83 dB. Penelitian ini terfokus pada optimalisasi desain knalpot racing valvetronic yang mencakup ketahanan material, bobot, dan turbulensi. Knalpot ini dirancang untuk performa optimal di berbagai rentang RPM namun tetap sesuai dengan regulasi tingkat kebisingan yang diizinkan pemerintah. Pengujian dalam penelitian ini menggunakan perangkat lunak seperti Autodesk Inventor, ANSYS, SolidWorks, dan dynamometer. Adapun parameter yang dikaji dalam penelitian ini yaitu kecepatan, tekanan, dan temperatur gas buang yang mengalir melalui knalpot. Lalu dilakukan simulasi menggunakan metode FEA untuk mendapatkan faktor keamanan dan menganalisa kelayakan model yang dirancang. Hasil dari simulasi kemudian dijadikan dasar dalam mengoptimalkan ketahanan material, bobot, memenuhi regulasi kebisingan, mengurangi turbulensi, serta memberikan performa optimal pada berbagai rentang RPM. Dalam penelitian ini, ditemukan bahwa ukuran inlet, ukuran knalpot, dan lekukan pada desain knalpot sangat mempengaruhi performa, turbulensi, distribusi panas, dan tingkat kebisingan. Kata Kunci : Knalpot, Valvetronic, Simulasi CFD
Co-Authors Ahmad Sofyan, Aprizal Maulana Ardhian Mahendar Munzir Qadri