ANALISIS KEKUATAN SAMBUNGAN ADHESIVE BONDING MATERIAL CFRP (CARBON FIBER REINFORCED POLYMER) MELALUI VARIASI BENTUK SAMBUNGAN TERHADAP SIFAT MEKANIK MATERIAL

YASMIN MADANIAH, . (2025) ANALISIS KEKUATAN SAMBUNGAN ADHESIVE BONDING MATERIAL CFRP (CARBON FIBER REINFORCED POLYMER) MELALUI VARIASI BENTUK SAMBUNGAN TERHADAP SIFAT MEKANIK MATERIAL. Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.

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Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh variasi bentuk sambungan terhadap kekuatan mekanik sambungan adhesive pada material komposit Carbon Fiber Reinforced Polymer (CFRP). Material CFRP yang digunakan merupakan hasil rekayasa dengan tambahan silika dari abu sekam padi sebagai pengisi matriks poliester. Variasi bentuk sambungan yang diuji meliputi single lap joint, strap joint, scarf joint, dan butt joint. Penelitian dilakukan dengan metode eksperimen kuantitatif kausal-komparatif melalui uji tarik (tensile test) sesuai standar ASTM D5868-01, dan analisis kegagalan berdasarkan visualisasi mode patahan berdasarkan ASTM D5573-91. Hasil penelitian menunjukkan bahwa bentuk sambungan berpengaruh signifikan terhadap kekuatan tarik dan pola kegagalan sambungan. Scarf joint menunjukkan performa mekanik terbaik dengan kekuatan tarik dan modulus elastisitas tertinggi, serta pola kegagalan cohesive dan fiber pull-out yang ideal. Sebaliknya, butt joint menunjukkan kekuatan paling rendah dengan kegagalan berupa light fiber tear. Penelitian ini menegaskan pentingnya pemilihan bentuk sambungan yang tepat untuk menjamin kekuatan dan keselamatan struktur berbasis komposit CFRP. Kata Kunci : CFRP, adhesive bonding, variasi bentuk sambungan, tensile test, mode kegagalan. ***** This study aims to analyze the effect of joint geometry variation on the mechanical strength of adhesive bonding in Carbon fiber Reinforced Polymer (CFRP) composite materials. The CFRP used is engineered with additional silica extracted from rice husk ash (RHA) as a polyester matrix filler. The joint configurations tested include single lap joint, strap joint, scarf joint, and butt joint. The research applies a quantitative experimental causal-comparative method using tensile testing based on ASTM D5868-01 and failure mode analysis through visual observation based ASTM D5573-91. The results indicate that joint geometry significantly influences the tensile strength and failure behavior of the bonded joints. The scarf joint demonstrated the highest mechanical performance with superior tensile strength and modulus of elasticity, along with ideal cohesive and fiber pull-out failure modes. Conversely, the butt joint exhibited the lowest strength, characterized by light fiber tear. This study emphasizes the importance of selecting appropriate joint configurations to ensure the structural strength and safety of CFRP-based composite systems. Keywords: CFRP, adhesive bonding, joint geometry variation, tensile test, failure mode.

Item Type:	Thesis (Sarjana)
Additional Information:	1). Dr. Ir. Himawan Hadi Sutrisno, M.T. ; 2). Dr. Siska Titik Dwiyati, M.T.
Subjects:	Teknologi dan Ilmu Terapan > Manufaktur
Divisions:	FT > S1 Rekayasa Keselamatan Kebakaran
Depositing User:	Yasmin Madaniah .
Date Deposited:	31 Jul 2025 02:23
Last Modified:	31 Jul 2025 02:23
URI:	http://repository.unj.ac.id/id/eprint/57019

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