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All Journal Journal of Engineering and Technological Sciences Warta Ardhia : Jurnal Perhubungan Udara
Afdhal Afdhal
Institut Teknologi Bandung
Engineering Transportation

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Kajian Desain Kelaiktabrakan Pesawat Terbang Annisa Jusuf; Afdhal Afdhal; Minda Mora
WARTA ARDHIA Vol 42, No 3 (2016)
Publisher : Research and Development Agency of The Ministry of Transportation

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1091.743 KB) | DOI: 10.25104/wa.v42i3.241.117-122

Abstract

Lalu lintas penerbangan di Indonesia mengalami tren peningkatan dari tahun ke tahun. Peningkatan frekuensi penggunaan pesawat terbang tentunya akan meningkatkan kemungkinan kejadian kecelakaan. Konsep kelaiktabrakan pesawat terbang menjadi hal penting yang perlu mendapat perhatian untuk mencegah kerusakan struktur dan cedera pada penumpang. Desain kelaiktabrakan struktur pesawat berada pada tahapan desain awal yang terintegrasi kedalam proses desain pesawat secara keseluruhan. Struktur subfloor pada pesawat terbang menjadi bagian yang digunakan untuk menyerap energi kinetik tabrakan dalam kasus pembebanan vertikal pada pesawat terbang. Crash box merupakan komponen pada subfloor yang akan menyerap energi kinetik tabrakan dengan mengubahnya menjadi deformasi plastis. [A Review of Aircraft Crashworthiness Design] Air traffic in Indonesia is experiencing a positive trend in recent years. The increase in the frequency of aircraft operation might particularly increase the possibility of accidents occurrence. Aircraft crashworthiness concept becomes an important matter that need to be considered in order to prevent structural damage and injuries to the passengers. Aircraft structural crashworthiness design is developed in the aircraft preliminary design phase which is, later, integrated into the overall aircraft design process. Aircraft subfloor structure is the part of the aircraft that is used to restrain the kinetic energy of a collision in the case of vertical loading on the aircraft. Subsequently, crash box is a component of the subfloor that will absorb collisions kinetic energy by turning it into plastic deformation.
Experimental Work for Bar Straightness Effect Evaluation of Split Hopkinson Pressure Bar Afdhal Afdhal; Leonardo Gunawan; Tatacipta Dirgantara
Journal of Engineering and Technological Sciences Vol. 53 No. 6 (2021)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2021.53.6.13

Abstract

Bar straightness is one of several factors that can affect the quality of the strain wave signal in a Split Hopkinson Pressure Bar (SHPB). Recently, it was found that the bar components of the SHPB at the Lightweight Structures Laboratory displayed a deviation in straightness because of manufacturing limitations. An evaluation was needed to determine whether the strain wave signals produced from this SHPB are acceptable or not. A numerical model was developed to investigate this effect. In this paper, experimental work was performed to evaluate the quality of the signal in the SHPB and to validate the numerical model. Good agreement between the experimental results and the numerical results was obtained for the strain rates and stress-strain relationship for mild steel ST37 and aluminum 6061 specimen materials. The recommended bar straightness tolerance is proposed as 0.36 mm per 100 mm.
Co-Authors Annisa Jusuf Leonardo Gunawan Minda Mora Tatacipta Dirgantara, Tatacipta