PENGARUH PROSES ANNEALING MATERIAL POLYLACTIC ACID (PLA) PADA VARIASI TABUNG HONEYCOMB TERHADAP CRASHWORTHINESS

EKO NUR SAPUTRA, . (2026) PENGARUH PROSES ANNEALING MATERIAL POLYLACTIC ACID (PLA) PADA VARIASI TABUNG HONEYCOMB TERHADAP CRASHWORTHINESS. Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.

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Abstract

Keselamatan kendaraan merupakan aspek krusial dalam industri otomotif, khususnya dalam upaya meminimalkan risiko cedera penumpang akibat kecelakaan lalu lintas. Penelitian ini bertujuan untuk menganalisis kinerja crashworthiness struktur tabung honeycomb berbahan Polylactic Acid (PLA) yang dicetak menggunakan teknologi 3D Printing Fused Deposition Modeling (FDM) serta melalui proses annealing pada suhu 95 °C selama 60 menit untuk meningkatkan sifat mekanik dan diharapkan dapat memperbaiki celah yang terbentuk akibat proses percetakan 3D Printing. Pengujian dilakukan menggunakan uji tekan kuasi-statik mengacu pada ASTM C 365/C 365M–05. Parameter crashworthiness yang dianalisis meliputi Energy Absorption (EA), Specific Energy Absorption (SEA), Mean Crushing Load (MCL), Peak Crushing Force (PCF), dan Crushing Force Efficiency (CFE). Hasil penelitian menunjukkan bahwa variasi struktur honeycomb dan proses annealing berpengaruh signifikan terhadap peningkatan kemampuan serap energi dan kestabilan deformasi struktur. Struktur dengan konfigurasi geometri tertentu mampu menghasilkan nilai EA, SEA, MCL dan CFE yang lebih tinggi, yang mengindikasikan perilaku deformasi yang stabil dan efisien. Temuan ini menunjukkan bahwa material Polylactic Acid hasil cetak 3D yang diproses melalui annealing memiliki potensi sebagai material alternatif ramah lingkungan untuk aplikasi struktur penyerap energi pada sistem keselamatan pasif kendaraan. Kata Kunci: Crashworthiness, Honeycomb, Polylactic Acid (PLA), Annealing, 3D Printing, Uji Tekan, Penyerapan Energi ***** Vehicle safety is a crucial aspect of the automotive industry, particularly in efforts to minimize the risk of passenger injury resulting from traffic accidents. This study aims to analyze the crashworthiness performance of honeycomb tube structures made of Polylactic Acid (PLA) fabricated using Fused Deposition Modeling (FDM) 3D printing technology and subjected to an annealing process at 95 °C for 60 minutes to enhance mechanical properties and to reduce defects formed during the 3D printing process. The tests were conducted using quasi-static compression testing in accordance with ASTM C365/C365M–05. The crashworthiness parameters analyzed include Energy Absorption (EA), Specific Energy Absorption (SEA), Mean Crushing Load (MCL), Peak Crushing Force (PCF), and Crushing Force Efficiency (CFE). The results indicate that variations in honeycomb structure and the annealing process have a significant effect on improving energy absorption capability and deformation stability. Structures with specific geometric configurations exhibit higher EA, SEA, MCL, and CFE values, indicating stable and efficient deformation behavior. These findings demonstrate that annealed 3D-printed Polylactic Acid has strong potential as an environmentally friendly alternative material for energy-absorbing structural applications in passive vehicle safety systems. Keywords: Crashworthiness, Honeycomb, Polylactic Acid (PLA), Annealing, 3D Printing, Pressure Test, Energy Absortion

Item Type:	Thesis (Sarjana)
Additional Information:	1). Dr. Ahmad Kholil, M.T. ; 2). Dr. Eng. I Wayan Sugita, M.T.
Subjects:	Teknologi dan Ilmu Terapan > Teknik Mesin, Mekanika Teknik
Divisions:	FT > S1 Teknik Mesin
Depositing User:	Eko Nur Saputra .
Date Deposited:	02 Feb 2026 04:43
Last Modified:	02 Feb 2026 04:43
URI:	http://repository.unj.ac.id/id/eprint/64595

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