Analisis Pengaruh Tipe Carbon fiber Dan Ketebalan Core Kayu Balsa Pada Spesimen Komposit Sandwich Terhadap Kemampuan Uji Bending Dan Uji Tensile

Moniz, Aloysius Andre (2025) Analisis Pengaruh Tipe Carbon fiber Dan Ketebalan Core Kayu Balsa Pada Spesimen Komposit Sandwich Terhadap Kemampuan Uji Bending Dan Uji Tensile. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh tipe serat carbon fiber dan variasi ketebalan inti (core) kayu balsa terhadap sifat mekanik komposit sandwich, khususnya kemampuan menahan beban dalam pengujian bending dan tensile. Komposit sandwich yang digunakan terdiri dari lapisan luar (face sheet) berbahan serat karbon tipe twill dan plain, serta inti kayu balsa dengan variasi ketebalan 1 mm hingga 5 mm. Metode fabrikasi yang digunakan adalah hand lay-up dan vacuum bagging untuk memastikan impregnasi resin yang optimal. Pengujian dilakukan dengan mengacu pada standar ASTM D3039 untuk tensile dan ASTM D7624 untuk bending. Parameter mekanik yang dianalisis meliputi tensile strength, tensile strain, dan modulus elastisitas dari uji tarik, serta tegangan lentur, regangan lentur, dan modulus elastisitas dari uji bending. Hasil pengujian menunjukkan bahwa tipe serat dan ketebalan core memberikan pengaruh signifikan terhadap kekuatan dan kekakuan material. Tipe twill secara umum menunjukkan performa yang lebih stabil dan kuat dibandingkan tipe plain, terutama pada ketebalan core 3 mm. Penelitian ini memberikan kontribusi dalam pengembangan material komposit ringan dan kuat yang berpotensi sebagai alternatif material struktural, khususnya dalam aplikasi otomotif seperti komponen kendaraan Nogogeni ITS Team sebagai pengganti core divinycell.
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This study aims to analyze the effect of carbon fiber types and variations in balsa wood core thickness on the mechanical properties of sandwich composite materials, particularly their performance under tensile and bending tests. The sandwich composite consists of outer face sheets made of carbon fiber with twill and plain weave patterns, and balsa wood cores with thicknesses ranging from 1 mm to 5 mm. The fabrication process employs hand lay-up combined with vacuum bagging to ensure optimal resin impregnation. Mechanical testing follows ASTM D3039 for tensile and ASTM D7624 for bending evaluation. The mechanical parameters analyzed include tensile strength, tensile strain, and elastic modulus for tensile tests, as well as bending stress, bending strain, and elastic modulus for bending tests. The results indicate that both the type of carbon fiber and core thickness significantly influence the strength and stiffness of the composite. The twill-type specimens generally exhibited more stable and higher mechanical performance compared to plain-type, with the optimal configuration found at 3 mm core thickness. This study contributes to the development of lightweight yet strong composite materials that have potential applications as structural alternatives, particularly in automotive components such as those developed by the Nogogeni ITS Team to replace divinycell core materials.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Komposit Sandwich, Kayu Balsa, Karbon Fiber, Uji Bending, Uji Tensile, Balsa Wood, Bending Test, Carbon fiber, Sandwich Composite, Tensile Test
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA418.16 Materials--Testing. T Technology > TA Engineering (General). Civil engineering (General) > TA433 Strength of materials. T Technology > TJ Mechanical engineering and machinery T Technology > TS Manufactures
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Aloysius Andre Uriptyono Moniz
Date Deposited:	28 Jul 2025 04:29
Last Modified:	28 Jul 2025 04:29
URI:	http://repository.its.ac.id/id/eprint/121833

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