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Perancangan Aktivitas Pemeliharaan dengan Metode Reliability pada Sistem Main Rotor Blade Helikopter BELL 412EP Studi Kasus Penerbad Semarang Bayu Rahmanto; Ferry Setiawan; Edi Sofyan
Journal of Applied Mechanical Engineering and Renewable Energy Vol 2 No 1: Februari 2022
Publisher : Indonesian Society of Applied Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (296.767 KB) | DOI: 10.52158/jamere.v2i1.243

Abstract

BENGPUSPENERBAD is a central workshop specifically owned by the Indonesian Army in Semarang, where aircraft and helicopters are subject to preventive and corrective maintenance. During the period 2018-2020 the BELL 412 EP helicopters often experienced unscheduled maintenance which resulted in losses resulting in flight failure, this was due to a malfunction in the Main Rotor Blade system. The malfunction of the Main Rotor Blade system is dominated by the hub component, namely on the shaft associated with Crack, Noise and Burn damage, and blade components, namely Corrosions, Nicks, Scratches, Dents, Deformation Holes and Crack. Therefore, the aim of this study is to eliminate failure system and unscheduled maintenance. To eliminate failure and unscheduled maintenance, the authors perform an analysis with the FMEA method and calculate using the distribution method, then design the appropriate activities on the system. The data used for analysis are qualitative and quantitative data, where the authors use data from Time To Failure (TTF) and Time To Repair (TTR). According to calculations using the current distribution we found that the Main Rotor Blade system was on time during the 200 operational flight hours, for which the reliability figure was 0.70. Maintenance activities in accordance with the operational conditions of the main rotor blade operating system are preventive maintenance with activities for tool preparation, inspection or chek, dismantling and servicing, and finally installation and finishing activities.
Composite Material Impact Test With Resin Matrix And Kenaf Fiber Reinforcement Using The Hand Lay Up Method Ferry Setiawan; Muh Anhar; Akmal Akmal; Dhimas Wicaksono
Journal of Applied Mechanical Engineering and Renewable Energy Vol 3 No 1: Februari2023
Publisher : Indonesian Society of Applied Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52158/jamere.v3i1.400

Abstract

The purpose of this study was to obtain the results of impact testing on composite material with the arrangement of kenaf fibers in woven with volume variations of 0%, 10%, 20%, 30%, 40%, and 50%. The value obtained from impact testing with 0% fiber variation has an average energy absorption yield of 1.730623009 J and an average impact price of 0.01273547 J/mm², 10% fiber has an average absorption energy yield of 1.468150063 J and an average yield of 1.468150063 J The average impact price is 0.01080396 J/mm², 20% fiber has an average energy absorption yield of 1.730623009 J and an average impact price is 0.01273547 J/mm², 30% fiber has an average energy absorption yield of 1.214516698 J and the average yield is 1.214516698 J The average impact price is 0.008937499 J/mm², 40% fiber has an average energy absorption yield of 1.993095955 J and an average impact price is 0.01466698 J/mm², 50% fiber has an average energy absorption yield of 2.264328531 J and an average yield of 2.264328531 J Average Impact Price 0.016662952 J/mm². This composite material is made with epoxy resin as a binder and kenaf fiber as a reinforcing material. The method used is hand lay-up and specimen testing using charpy impact. After testing, a micro photo will be taken to see the best specimen fracture results.