Studi Eksperimen dan Analisa Pengaruh Ketebalan Adhesive pada Sambungan Alumunium Tipe Butt-Joint Terhadap Kekakuan dengan Pembebanan Dinamis

Burhan Hudayya, Adib (2019) Studi Eksperimen dan Analisa Pengaruh Ketebalan Adhesive pada Sambungan Alumunium Tipe Butt-Joint Terhadap Kekakuan dengan Pembebanan Dinamis. Other thesis, Intitut Teknologi Sepuluh Nopember.

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Abstract

Seiring berkembangnya teknologi, proses penyambungan dapat diaplikasikan pada material yang berbeda, misalnya antara aluminium dan baja. Umumnya, penyambungan kedua material tersebut menggunakan paku keling atau baut karena sederhana dan mudah dibongkar. Namun, apabila sambungan menerima beban tinggi atau benturan, kerusakan dapat terjadi pada lubang akibat konsentrasi tegangan. Salah satu alternatif penyambungan dua material yang berbeda adalah metode *adhesive joint*. Struktur sambungan adhesif memiliki keunggulan berupa bobot yang ringan serta kemampuan yang lebih baik dalam menerima beban dinamis, seperti tumbukan, sehingga diperlukan karakterisasi terhadap sifat dinamisnya, seperti kekakuan sambungan dan kemampuan penyerapan energi. Salah satu metode untuk memperoleh karakteristik sambungan adhesif tersebut adalah menggunakan *Split Hopkinson Pressure Bar* (SHPB). Dalam pengujian karakterisasi sambungan adhesif, salah satu jenis sambungan yang paling sering digunakan adalah tipe *butt joint* karena mudah dirakit dan memungkinkan variasi ketebalan adhesif untuk mengetahui perubahan kekakuan saat menerima beban dinamis berupa tumbukan. Pada penelitian ini dilakukan studi eksperimental mengenai pengaruh ketebalan adhesif terhadap kekakuan sambungan tipe *butt*. Pengujian menggunakan alat *Split Hopkinson Pressure Bar*. Adhesif digunakan untuk menyambungkan dua material aluminium identik tipe AISI 6061 dengan variasi ketebalan 0,5; 1,0; 2,0; dan 3,0 mm, serta rasio resin terhadap *hardener* dijaga konstan sebesar 1:1. Variasi tersebut bertujuan untuk mengetahui pengaruh ketebalan terhadap karakteristik sambungan. Setelah dilakukan eksperimen dan pengolahan data, diharapkan diperoleh kurva tegangan-regangan (*stress-strain*) untuk setiap variasi ketebalan sehingga dapat ditentukan ketebalan adhesif optimum pada sambungan *butt* antara dua material identik. Penelitian ini dilakukan untuk mengetahui respons dinamis *adhesive butt-joint* pada laju regangan tinggi sebesar 600 s⁻¹ menggunakan *Split Hopkinson Pressure Bar*. Sambungan terdiri atas dua silinder aluminium identik yang direkatkan menggunakan epoksi dengan variasi ketebalan adhesif. Hasil penelitian menunjukkan bahwa modulus Young sambungan meningkat secara nonmonoton seiring bertambahnya ketebalan adhesif. Ketebalan adhesif optimum ditentukan berdasarkan nilai kekakuan sambungan yang paling tinggi.
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Along with the development of technology, joining processes can be applied to dissimilar materials such as aluminum and steel. Generally, these materials are joined using rivets or bolts because the process is simple and allows easy disassembly. However, when the joint is subjected to high loads or impact, damage may occur around the holes due to stress concentration. One alternative for joining dissimilar materials is the adhesive joint method. Adhesive joints offer advantages such as lightweight construction and superior performance under dynamic loading, including impact, making it necessary to characterize properties such as joint stiffness and energy absorption. One method for evaluating the characteristics of adhesive joints is the use of a Split Hopkinson Pressure Bar (SHPB) apparatus. In adhesive joint characterization, the butt joint configuration is one of the most commonly used because it is easy to assemble and allows variations in adhesive thickness to investigate changes in joint stiffness under dynamic impact loading. In this study, an experimental investigation was conducted to analyze the effect of adhesive thickness on the stiffness of butt joints. Experiments were performed using a Split Hopkinson Pressure Bar. The adhesive was used to bond two identical AISI 6061 aluminum specimens with adhesive thicknesses of 0.5, 1.0, 2.0, and 3.0 mm, while maintaining a constant resin-to-hardener ratio of 1:1. These variations were intended to determine the influence of adhesive thickness on joint characteristics. After the experiments and data analysis, stress-strain curves were obtained for each adhesive thickness variation to determine the optimum adhesive thickness for butt joints between two identical materials. This study investigated the dynamic response of adhesive butt joints at a high strain rate of 600 s⁻¹ using a Split Hopkinson Pressure Bar. The joint consisted of two identical cylindrical aluminum specimens bonded with epoxy of varying thickness. The results showed that the Young’s modulus of the joint increased in a non-monotonic manner with increasing adhesive thickness. The optimum adhesive thickness was determined based on the maximum joint stiffness.

Item Type:	Thesis (Other)
Additional Information:	RSM 621.825 Hud s-1 2019
Uncontrolled Keywords:	Adhesive, butt joint, kekakuan, split hopkinson pressure bar
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ230 Machine design T Technology > TL Motor vehicles. Aeronautics. Astronautics T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL257.5 Automobiles--Shock absorbers--Design and construction. T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL671.6. Materials--Fatigue.
Divisions:	Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Adib Burhan Hudayya
Date Deposited:	21 Jul 2026 01:15
Last Modified:	21 Jul 2026 01:15
URI:	http://repository.its.ac.id/id/eprint/66077

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