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All Journal Prosiding Seminar Nasional Sains Teknologi dan Inovasi Indonesia (Senastindo)
Yustina Titin Purwantiningsih
Prodi Teknik Aeronautika Pertahanan, Akademi Angkatan Udara, Yogyakarta, Indonesia
Computer Science & IT Control & Systems Engineering Engineering Mechanical Engineering Other

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Pemodelan Simulasi Tabung Penyerap Energi Crash Box Sebagai Teknologi Keselamatan Pasif Berbasis Software FEM (Finite Elemen Methode) Willy Wirawan; Adya Aghastya; Septiana Widi Astuti; Natriya Faisal Rachman; Suprapto Suprapto; Yustina Titin Purwantiningsih
Prosiding Seminar Nasional Sains Teknologi dan Inovasi Indonesia (SENASTINDO) Vol 3 (2021): Prosiding Seminar Nasional Sains Teknologi dan Inovasi Indonesia (Senastindo)
Publisher : Akademi Angkatan Udara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (698.954 KB) | DOI: 10.54706/senastindo.v3.2021.124

Abstract

A crash box is one of the absolute safeties in transportation that functions as a means ofabsorbing impact energy to reduce injuries to drivers and passengers due to collisions or accidents. This study aims to determine the value of energy absorption and the resulting deformation pattern on the crash box in the form of a one-segment circular tube. The method in this study uses a quasiexperimental using finite element-based simulation software (finite element method). The variables in this study include a tube length of 300 mm with variations in the thickness of 1,5 mm and 3 mm and a tube diameter of 120 mm. A quasi-static collision test will be carried out with an impactor with a mass of 200 kg and a speed of 10 m/s. The simulation on the crash box is observed based on the value of energy absorption, reaction force, and the formed deformation pattern. The simulation results show that the highest energy absorption value is found in the 3 mm thick crash box of 790000 Joules. The reaction force of 230000 N. It can be seen that the deformation pattern formed tends to bend in the 1,5 mm thick crash box and forms a concertina pattern on the thick crash box is 3 mm..
Schedule Planning and Maintenance Activities Auxiliary Power Unit (APU) Boeing 737-500 Aircraft With Reliability Method Ferry Setiawan; Yustina Titin Purwantiningsih; Dhimas Wicaksono
Prosiding Seminar Nasional Sains Teknologi dan Inovasi Indonesia (SENASTINDO) Vol 3 (2021): Prosiding Seminar Nasional Sains Teknologi dan Inovasi Indonesia (Senastindo)
Publisher : Akademi Angkatan Udara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (496.01 KB) | DOI: 10.54706/senastindo.v3.2021.130

Abstract

This study aims to plan effective maintenance schedules and activities on the auxiliarypower unit system so that there will be no more failures or unplanned or sudden damage. Failures in auxiliary power unit equipment often occur in several work systems, namely electrical systems, lubrication systems and Ignition systems, where this causes considerable losses for airlines. This research method uses qualitative and quantitative approaches, qualitative analysis uses the Failure Mode Effect and Critically Analysis (FMECA) method by analyzing the factors causing failure and the effects of failure, with the results of the causes of failure in several auxiliary power unit (APU) work systems as follows: the following electrical system is on the Relay start component, the Lubrication System is on the Oil Filter component, the Ignition System is on the igniter plug. From the results of the FMECA analysis, a quantitative analysis was carried out with the analysis carried out using the reliability method, the reliability parameter was calculated by the Weibull probability distribution, to determine the critical limit of the operational time of the component or system part which is the reliability limit of an auxiliary power unit system. The critical operational limit for the electrical system is 434 flight hours, the lubrication system is 1186 flight hours, and the Ignition system is 1610 flight hours, then these results are used to determine an effective maintenance schedule supported by planning the right maintenance activities to eliminate the causes - cause of failure in auxiliary power unit equipment.
Co-Authors Adya Aghastya Dhimas Wicaksono Ferry Setiawan Rachman, Natriya Faisal Septiana Widi Astuti Suprapto Suprapto Wirawan, Willy Artha