PUTRI, FARAH AZARA DJAYA (2025) ANALISIS LAJU KOROSI ALUMINIUM 2024-T3 PADA BAGIAN FUSELAGE SKIN PESAWAT UDARA DI MEDIA AIR MENGGUNAKAN METODE WEIGHT LOSS DENGAN DAN TANPA COATING. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
Based on maintenance data at PT. GMF Aeroasia from 2023 to 2024 found corrosion on the fuselage skin of the aircraft, this was caused by standing water resulting in the damage to the surface of the 2024-T3 aluminium metal even though the metal had been given a protective coating using Ardrox AV-15. So far, the incidence of corrosion is caused by standing water in the fuselage skin section. Based on this, the aim of this research is to analyze the magnitude of the corrosion rate that occurs on this metal. Corrosion rate analysis was carried out on 2024-T3 aluminum without and with the Ardrox AV-15 protective coating layer in water using the mass loss method. The test variable is coating coating on the material with variations without coating, one layer, and two layers with a soaking time of 720 hours (30 days) and 1080 hours (45 days). The results of corrosion rate testing with an immersion time of 720 hours showed the highest corrosion rate on the uncoated material sample, which was 0.164665 mmpy with a weight loss of 0.101 grams. Meanwhile, the lowest corrosion rate was observed on the two-layer coated material sample, which was 0.029346 mmpy with a weight loss of 0.018 grams. The coating efficiency for the single-layer material sample with a 720-hour immersion time reached 53.47%, while for the two-layer coating, it was 82.18%. For an immersion time of 1080 hours, the highest corrosion rate was observed on the uncoated material sample, which was 0.13912 mmpy with a weight loss of 0.128 grams. Meanwhile, the lowest corrosion rate was observed on the twolayer coated material sample, which was 0.01848 mmpy with a weight loss of 0.017 grams. The coating efficiency for the single-layer material sample with a 1080-hour immersion time reached 55.47%, while for the two-layer coating, it was 86.72% Keyword: Corrosion, Coating, Ardrox AV-15, Aluminium 2024-T3 Berdasarkan maintenance data di PT. GMF Aeroasia dari tahun 2023 hingga 2024 ditemukan adanya korosi pada bagian fuselage skin pesawat hal ini disebabkan oleh adanya genangan air sehingga terjadi kerusakan pada permukaan logam aluminium 2024-T3 walaupun logam tersebut sudah diberi lapisan lindung menggunakan Ardrox AV-15. Selama ini kejadian korosi pada logam tersebut belum pernah ditinjau berapa besar korosi yang ditimbulkan oleh genangan air pada bagian fuselage skin, berdasarkan hal tersebut tujuan dari penelitian ini adalah untuk menganalisis besarnya laju korosi yang terjadi pada logam tersebut. Analisis laju korosi yang dilakukan pada aluminium 2024-T3 tanpa dan dengan lapisan pelindung coating Ardrox AV-15 di media air menggunakan metode kehilangan massa (weight loss). Variabel pengujian berupa pelapisan coating pada material dengan variasi tanpa pelapisan, satu lapisan, dan dua lapisan dengan waktu perendaman 720 jam (30 hari) dan 1080 jam (45 hari). Hasil pengujian laju korosi dengan waktu perendaman 720 jam didapatkan paling besar pada perendaman sampel material tanpa pelapisan yaitu sebesar 0,164665 mmpy dengan kehilangan berat 0,101 gram. Sedangkan laju korosi paling kecil terdapat pada sampel material dua lapisan yakni sebesar 0,029346 mmpy dengan kehilangan berat 0,018 gr. Efisiensi penggunaan coating dengan waktu perendaman 720 jam sampel material satu lapisan mencapai 53,47%, sedangkan untuk dua lapisan coating yaitu sebesar 82,18%. Laju korosi dengan waktu perendaman 1080 jam paling besar didapatkan pada sampel material tanpa pelapisan yaitu 0,13912 mmpy dengan kehilangan berat 0,128 gr. Sedangkan laju korosi paling kecil terdapat pada sampel material dua lapisan yakni sebesar 0,01848 mmpy dengan kehilangan berat 0,017 gr. Efisiensi penggunaan coating dengan waktu perendaman 1080 jam sampel material satu lapisan mencapai 55,47%, sedangkan untuk dua lapisan coating yaitu sebesar 86,72% Kata kunci: Korosi, Coating, Ardrox AV-15, Aluminium 2024-T3
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