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Substitution of LRT Jabodebek Carbody Material Based on Safety Factor and Price using SPK, SAW, WP and WASPAS Belanusa, Resi Sabanta; Asngali, Bi; Sukoroto, Sukoroto
ASTONJADRO Vol. 14 No. 2 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i2.17828

Abstract

This research raises the issue of substituting Jabodebek LRT carbody materials by considering safety factors and prices using three Decision Support Systems (SPK), namely Simple Additive Weighting (SAW), Weighted Product (WP), and Weighted Aggregated Sum Product Assessment (WASPAS). The results showed that it is necessary to consider the ranking of the results from the SPK against the safety factor, and price in choosing the right aluminium material for the carbody. The three GMS used gave similar rankings for aluminium materials, which shows that these methods are consistent in measuring material quality. Therefore, these three methods can be considered valid. Based on the rankings given by the three CBMS, 7034-T6 aluminium material has the highest quality, followed by 7001-T6 and 7178-T6. Lower-ranked materials include 6061-T6, 6063-T6, and 6066-T6. If budget is not an issue, it is best to choose materials with the highest quality ratings, such as 7034-T6, 7001-T6, or 7178-T6. However, if price is a priority, you should choose a material with a lower quality rating but a more economical price, such as 6061-T6, 6063-T6, or 6066-T6.
Analisis Aerodinamika Alternatif Desain Mask of Car pada Kereta Cepat dengan Simulasi Computational Fluid Dynamics (CFD) Firdaus, Rafael Slamet; Sallim, Alfi Tranggono Agus; Sukoroto, Sukoroto
Simetris: Jurnal Teknik Mesin, Elektro dan Ilmu Komputer Vol. 16 No. 2 (2025): JURNAL SIMETRIS VOLUME 16 NO 2 TAHUN 2025
Publisher : Fakultas Teknik Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/simet.v16i1.13346

Abstract

Pengurangan coefficient drag cara adalah cara untuk meningkatkan aerodinamik kereta cepat. Tujuan penelitian ini untuk menyimulasikan aerodinamika pada kereta cepat yang memiliki kecepatan 220 km/jam dan lebar rel 1435 mm berdasarkan perkembangan kereta cepat di Indonesia. Penelitian ini menganalisis terhadap desain mask of car 1 berbentuk mask of car kereta cepat Intercity Express (ICE) 3, desain mask of car 2 berbentuk mask of car kereta cepat (Automotrice Grande Vitesse) (AGV), dan desain mask of car 3 berbentuk mask of car kereta cepat Harramain High Speed Railways. Metode penelitian ini adalah metode eksperimental kuantitatif analisis aerodinamika Computational Fluid Dynamics (CFD) menggunakan software ansys workbench. Hasil penelitian ini adalah alternatif desain mask of car 3 memiliki nilai coefficient drag terkecil.