Abstract
Aluminum and composite materials are the types of materials that are used to construct structures on aircraft airframes. It is not uncommon for both types of materials to be used together with the joining method. In the process of connecting between two types of material in the aircraft structure, it is mostly carried out by the riveting method. This process is carried out by making a hole in the two materials according to the rivet diameter and then the hole diameter is then filled with rivets and the riveting process is carried out. The process uses rivets so that it will relatively increase the weight of the structure because there is additional rivet material. In this study, the objectives are to determine the mechanical strength of the joint between the composite and aluminum sheet metal using the mechanical clinching and riveting processes. The method used is an experimental method, namely by making test specimens with composite and aluminum, solid rivet type fasteners and punches to determine the connection of the riveting, the drilling process is carried out with a hole diameter of 3.5 mm, for the clinching method with variations in the diameter of the punch 3.5 mm, 4.0 mm. , and 4.5 mm. Then the tensile test, macro photo test were carried out. The results obtained from this research are that the maximum load increase in the specimen tested by clinching is because the damage length (gap) value is obtained at the joint boundary between the rivet and the test material.
Highlights
composite materials are the types of materials
by making a hole in the two materials according to the rivet diameter
then the hole diameter is then filled with rivets
Summary
Dari hasil penelitian yang telah dilakukan setiap benda uji memiliki nilai maksimum load yang berbeda, didapatkan hasil kekuatan yang paling tinggi ada pada spesimen C composit carbon fiber yaitu sebesar 9234 Newton dan paling rendah pada spesimen B composit carbon fiber dengan nilai 8452 Newton. Hal ini disebabkan karena pembuatan spesimen composit carbon fiber dikerjakan manual dengan tangan manusia. Dalam pengujian tarik single lap joint menggunakan sheet metal Aluminium 2024-T3, Composite fiber, dan rivet solid dengan diameter 3.5 mm. Standar yang digunakan dalam pengujian menggunakan standar ISO/DIS 12996 (dimensi dan layout pada gambar 3.23). Dalam pengujian ini penulis membutuhkan 3 spesimen riveting. Dari hasil pengujian spesimen dengan riveting didapatkan hasil rata-rata pada maksimum load yaitu sebesar 1059 Newton, rata-rata pada yield strength yaitu sebesar 113 NN/mmmm dan rata-rata tensile strength yaitu sebesar 151 NN/mmmm
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