#TITLE_ALTERNATIVE#

• Main Author: Farhan (NIM : 13611035), Muhammad
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/29178
• Institution: Institut Teknologi Bandung

A structure is made to experience various kinds of loading. Therefore, the material used should have a good ability to sustain and transfer the loading without any problems. Because the loading is given continuously for a certain time, the structure’s capability decreases so that it has the potential for damage. Damage that occurs in a structure can decrease the structure's ability to transfer and support the loading. Various ways have been tried to fix the damage, one of them is by utilizing the patch with the parent using adhesive. <br /> <br /> Therefore, the authors do patching using adhesive experimentally, and simulate it with finite element method with aluminum as the material used, because one of the materials that are widely used as raw materials is aluminum. In this undergraduate thesis, aluminum 2024-T3 is chosen as the experimental material because it is widely used as aircraft material. <br /> <br /> The type of experiment carried out is a tensile test of two types of speciments distinguished by patch size. A numerical analysis based on finite element method is implemented by means of a comparable change with the experiment results. From the tensile test, the result obtained is that the maximum mean of gross stress for plate without defect is equal to 458 MPa, defected plate without patch equal to 305 MPa, defected plate with patch 2 x 2 cm equal to 308 MPa and defected plate with patch 4 x 6 cm equal to 366 MPa. The result from ABAQUSCAE with loads of 65.98 MPa is that the maximum stress obtained around the hole for the defected plate without patch is 483 MPa with Ktg of 7.32, the defected plate with 2 x 2 cm patch is 334.4 MPa with Ktg of 5.07 and the defected plate with 4 x 6 cm patch is 310.1 MPa with Ktg of 4.7. <br /> <br /> From the experimental results, it is known that the use of 2 x 2 cm patch does not produce significant results, but the use of 4 x 6 cm patch can give good results even though it still has not restored the strength of the plate completely.