Studi Eksperimental Parameter Proses Vacuum Infusion Terhadap Penyerapan Energi Impak Komposit Serat Karbon

Wiryawan, Naufal Wahyu (2026) Studi Eksperimental Parameter Proses Vacuum Infusion Terhadap Penyerapan Energi Impak Komposit Serat Karbon. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Komposit serat karbon banyak digunakan pada industri karena memiliki kekuatan spesifik tinggi dan bobot yang ringan. Salah satu metode fabrikasi yang banyak diterapkan adalah vacuum infusion, namun pengaruh variasi radius spesimen terhadap kekuatan impak dan pola kerusakan komposit masih perlu dikaji. Penelitian ini bertujuan menganalisis pengaruh variasi radius terhadap kekuatan impak, mengidentifikasi pola kerusakan material, serta menentukan radius dengan performa terbaik. Penelitian dilakukan secara eksperimental menggunakan komposit serat karbon yang difabrikasi dengan metode vacuum infusion. Spesimen dibuat dengan variasi radius R50, R100, dan R150, kemudian diuji menggunakan Charpy impact test. Data dianalisis menggunakan uji normalitas, uji homogenitas, dan One-Way ANOVA, serta dilakukan pengamatan terhadap pola patahan spesimen.
Hasil penelitian menunjukkan bahwa variasi radius tidak memberikan pengaruh yang signifikan terhadap kekuatan impak (p > 0,05). Meskipun demikian, secara deskriptif spesimen R150 menunjukkan distribusi nilai impact strength yang lebih stabil dan konsisten dibandingkan R50 dan R100. Pola kerusakan pada seluruh spesimen didominasi oleh delamination dan fiber pull-out, disertai fiber fracture dan matrix cracking. Berdasarkan hasil pengujian, analisis statistik, dan pola patahan, spesimen R150 menunjukkan kecenderungan memiliki performa terbaik karena menghasilkan distribusi sifat mekanik yang lebih homogen dan mekanisme penyerapan energi yang lebih stabil. Dan berdasarkan hasil pengujian spesimen radius R150 memiliki kekuatan impact dengan rata rata nilai kekuatan 260.734 kJ/m2
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Carbon fiber composites are widely used in various industries due to their high specific strength and lightweight characteristics. One of the most commonly applied fabrication methods is vacuum infusion; however, the effect of specimen radius variation on the impact strength and failure characteristics of composites has not been extensively investigated. This study aims to analyze the effect of specimen radius variation on impact strength, identify the failure patterns of the composite material, and determine the specimen radius with the best performance.
An experimental study was conducted using carbon fiber composites fabricated through the vacuum infusion method. Specimens with radius variations of R50, R100, and R150 were prepared and tested using the Charpy impact test. The data were analyzed using normality and homogeneity tests, followed by a One-Way ANOVA, while the fracture patterns were examined through visual observation. The results showed that specimen radius variation did not have a statistically significant effect on impact strength (p > 0.05). Nevertheless, descriptively, the R150 specimens exhibited a more stable and consistent distribution of impact strength values than the R50 and R100 specimens. The failure patterns of all specimens were predominantly characterized by delamination and fiber pull-out, accompanied by fiber fracture and matrix cracking. Based on the impact test results, statistical analysis, and fracture pattern evaluation, the R150 specimens demonstrated the best overall performance, exhibiting a more homogeneous distribution of mechanical properties and a more stable energy absorption mechanism. Based on the impact test results, the R150 radius specimen exhibited an average impact strength of 260.734 kJ/m².

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Komposit serat karbon; Vacuum infusion; Uji impak; Penyerapan energi impak; Radius spesimen,Carbon fiber composites; Vacuum infusion; Charpy impact test; Impact energy absorption; Specimen radius
Subjects:	T Technology > TJ Mechanical engineering and machinery T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL671.6. Materials--Fatigue.
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Naufal Wahyu Wiryawan
Date Deposited:	29 Jul 2026 02:00
Last Modified:	29 Jul 2026 02:00
URI:	http://repository.its.ac.id/id/eprint/139345

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