Gunadi Gunadi, Faiz Aryasatya Muzakki, I. Kadek Warjaya, Adhy Wahyu Nugroho
This study aims to determine the effect of core material variations on the Urban Garuda UNY vehicle body reinforcement density and flexural strength for the Shell Eco-Marathon competition. This research used experimental research with carbon fiber composite samples made using a core variation of matt tissue and soric as the research subjects. This research was conducted in the Materials Laboratory of the Mechanical Engineering Education Department, Faculty of Engineering, Universitas Negeri Yogyakarta (UNY). Universal Testing Machine (UTM) is used to test the sample, then structured observational data collection techniques are used to collect the data. A descriptive statistical method was applied to analyze and process the data. The study results indicate that the soric core composition produces the lowest density with the value of 0.58 gr/cm3, with a strength value indicated by maximal load (110.37 N), maximal stress (63.68 N/mm2), and young's modulus (8.312 N/mm2). On the other hand, the matt tissue core type produces the highest density value of 1.24 gr/cm3, with the maximal load of 558.68 N, maximal stress is 322.31 N/mm2, and young's modulus is 26.064 N/mm2. The matt tissue core type can apply to get a high-strength composite in vehicle body reinforcement of Urban Garuda UNY. At the same time, the soric core type is recommended to use in vehicle body reinforcement to obtain a low-density value according to the needs of the Urban Garuda UNY body. © 2024 Author(s).
Faculty Engineering, Universitas Negeri Yogyakarta, Yogyakarta, Indonesia
