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All Journal E-Dimas: Jurnal Pengabdian kepada Masyarakat Jurnal Teknologi Kedirgantaraan (JTK) Jurnal Bakti Bagi Bangsa Jurnal Bakti Dirgantara
Riskha Agustianingsih
Universitas Dirgantara Marsekal Suraydarma
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation Other

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Journal : Jurnal Teknologi Kedirgantaraan (JTK)

 1 
Analisis Numerik Penyerapan Energi pada Sabot untuk Pengujian Bird Strike Riskha Agustianingsih; Sahril Afandi Sitompul; Endah Yuniarti; Rizky fitriansyah; Agus Bayu
Jurnal Teknologi Kedirgantaraan Vol 5 No 2 (2020): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2431.956 KB) | DOI: 10.35894/jtk.v5i2.7

Abstract

abstrak - Pengujian Bird Strike dilakukan menggunakan alat SHPB (Split Hopkinson Pressure Bar) yang menembakkan sabot (wadah burung). Pada ujung alat SHPB, sabot akan dihentikan oleh stopper sehingga burung akan terlepas dan meluncur dengan bebas hingga mengalami tumbukan dengan komponen uji. Sabot harus memaksimalkan kecepatan burung ketika keluar (terlepas dari sabot). Berdasarkan persamaan impuls dan momentum, hal ini dapat diperoleh dengan meminimalkan waktu tumbukan sehingga gaya impulsnya akan meningkat. Tujuan penelitian ini adalah mengetahui waktu tumbukan, pola grafik Energy Absorption (EA), Peak Crushing Force (PCF), dan Mean Crushing Force (MCF). Dari parameter tersebut, maka diperoleh sabot yang diinginkan berdasarkan waktu tumbukan tersingkat, PCF dan MCF tertinggi, serta EA terendah. Simulasi dilakukan menggunakan perangkat lunak elemen hingga (Abaqus CAE) berdasarkan variasi material (AA6061-T6, S355, dan AISI 1340) sabot. Berdasarkan hasil dan pembahasan, diperoleh bahwa waktu tumbukan paling singkat dimiliki variasi material AISI 1340 dengan nilai 0.00071 s. EA terendah untuk variasi material dimiliki oleh AISI 1340, yaitu sebesar 2.51 kJ. PCF tertinggi untuk variasi material dimiliki oleh material AISI 1340, yaitu 466 kN. Ditentukan bahwa berdasarkan nilai waktu (t) paling singkat, PCF, MCF paling tinggi, dan EA paling rendah, maka diperoleh material AISI 1340 sebagai material yang diinginkan karena paling berpengaruh terhadap peningkatan kecepatan burung setelah keluar dari sabot.
Rancang Bangun Alat Peraga Ground Lock Main Landing Gear Fadli Hidirsyah; Mufti Arifin; Riskha Agustianingsih
Jurnal Teknologi Kedirgantaraan Vol 9 No 2 (2024): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35894/jtk.v9i2.184

Abstract

The Landing gear is a critical component of an aircraft that supports its weight and absorbs shocks during takeoff and landing, as well as reduces air resistance during flight. The Ground Lock is a crucial part that locks the Landing gear in place when the aircraft is parked to ensure stability. For educational purposes, a practical and portable model has been created that resembles the actual Landing gear, with dimensions adjusted for classroom use (31.5 cm x 21.2 cm x 18.4 cm). This model uses flexible hydraulic hoses and medical syringes as hydraulic pumps, with a frame made of strong, lightweight, and transparent aluminum and acrylic. Testing of the model shows that this hydraulic system is effective in simulating the locking and releasing of the Landing gear, with a time of 8.49 seconds, although it can vary depending on the operator. The advantages of this model include ease of operation, availability of easily obtainable materials, economical cost, and portability. Its drawbacks include inaccurate scale, material limitations, limited complexity, untested durability under extreme conditions, dependence on the operator, and the need for regular maintenance. Nonetheless, this model remains significant in aviation engineering education, helping students understand the Ground Lock main Landing gear mechanism through realistic simulations.
Studi Numerik Perbandingan Perilaku Struktur Auxetic Chiral dan Honeycomb Pada Pembebanan Tekan dan Impact Simon Sindhu Hendradjaja; Algazali, Febri; Syarifah Fairuza; Budi Aji Warsiyanto; Riskha Agustianingsih
Jurnal Teknologi Kedirgantaraan Vol 10 No 2 (2025): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35894/jtk.v10i2.128

Abstract

This study aims to compare the structural performance of auxetic chiral and honeycomb sandwich panels under compression and impact loading to identify their potential application in lightweight aerospace structures. Numerical simulations were conducted using the ABAQUS platform to analyze the mechanical response and failure behavior of both core designs. A mesh convergence study was performed to ensure accurate and reliable simulation results. The impact tests were conducted at energy levels of 5 J, 10 J, and 20 J, while compression tests were applied with a displacement of 4 mm. The results show that the auxetic chiral core demonstrates superior performance compared to the honeycomb core by achieving smaller deformations and better energy absorption under equivalent impact forces. Furthermore, the auxetic chiral core exhibits a higher compressive strength of up to 111 MPa, outperforming the honeycomb core, which withstands only 50 MPa. Failure analysis also reveals that facesheets on auxetic panels experience significantly smaller damage areas compared to honeycomb panels. These findings indicate that auxetic chiral cores offer promising advantages for designing lightweight, impact-resistant aerospace structures.
Co-Authors Agus Bayu Agus Sugiharto Algazali, Febri amat chaeroni Ayu Martina Budi Aji Warsiyanto Endah Yuniarti, Endah Evi Endarti Fadli Hidirsyah Fairuza, Syarifah muftiarifin Muhamad Jayadi Muhammad Hadi Widanto Rafika Arum Sari Rizky fitriansyah Simon Sindhu Hendradjaja Sitompul, Sahril Afandi Tri Susilo